diff --git a/docs/about/maintainers.rst b/docs/about/maintainers.rst
index 7a48601..680683d 100644
--- a/docs/about/maintainers.rst
+++ b/docs/about/maintainers.rst
@@ -747,6 +747,12 @@
 :|G|: `vwadekar`_
 :|F|: docs/threat_model/
 
+Conventional Changelog Extensions
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+:|M|: Chris Kay <chris.kay@arm.com>
+:|G|: `CJKay`_
+:|F|: tools/conventional-changelog-tf-a
+
 .. _AlexeiFedorov: https://github.com/AlexeiFedorov
 .. _Andre-ARM: https://github.com/Andre-ARM
 .. _Anson-Huang: https://github.com/Anson-Huang
diff --git a/docs/change-log.md b/docs/change-log.md
new file mode 100644
index 0000000..0d75dc5
--- /dev/null
+++ b/docs/change-log.md
@@ -0,0 +1,3766 @@
+# Change Log & Release Notes
+
+This document contains a summary of the new features, changes, fixes and known
+issues in each release of Trusted Firmware-A.
+
+## 2.5.0 (2021-05-17)
+
+### New Features
+
+- Architecture support
+
+  - Added support for speculation barrier(`FEAT_SB`) for non-Armv8.5 platforms
+    starting from Armv8.0
+  - Added support for Activity Monitors Extension version 1.1(`FEAT_AMUv1p1`)
+  - Added helper functions for Random number generator(`FEAT_RNG`) registers
+  - Added support for Armv8.6 Multi-threaded PMU extensions (`FEAT_MTPMU`)
+  - Added support for MTE Asymmetric Fault Handling extensions(`FEAT_MTE3`)
+  - Added support for Privileged Access Never extensions(`FEAT_PANx`)
+
+- Bootloader images
+
+  - Added PIE support for AArch32 builds
+  - Enable Trusted Random Number Generator service for BL32(sp_min)
+
+- Build System
+
+  - Added build option for Arm Feature Modifiers
+
+- Drivers
+
+  - Added support for interrupts in TZC-400 driver
+  - Broadcom
+    - Added support for I2C, MDIO and USB drivers
+  - Marvell
+    - Added support for secure read/write of dfc register-set
+    - Added support for thermal sensor driver
+    - Implement a3700_core_getc API in console driver
+    - Added rx training on 10G port
+  - Marvell Mochi
+    - Added support for cn913x in PCIe mode
+  - Marvell Armada A8K
+    - Added support for TRNG-IP-76 driver and accessing RNG register
+  - Mediatek MT8192
+    - Added support for following drivers
+      - MPU configuration for SCP/PCIe
+      - SPM suspend
+      - Vcore DVFS
+      - LPM
+      - PTP3
+      - UART save and restore
+      - Power-off
+      - PMIC
+      - CPU hotplug and MCDI support
+      - SPMC
+      - MPU
+  - Mediatek MT8195
+    - Added support for following drivers
+      - GPIO, NCDI, SPMC drivers
+      - Power-off
+      - CPU hotplug, reboot and MCDI
+      - Delay timer and sys timer
+      - GIC
+  - NXP
+    - Added support for
+      - non-volatile storage API
+      - chain of trust and trusted board boot using two modes: MBEDTLS and CSF
+      - fip-handler necessary for DDR initialization
+      - SMMU and console drivers
+      - crypto hardware accelerator driver
+      - following drivers: SD, EMMC, QSPI, FLEXSPI, GPIO, GIC, CSU, PMU, DDR
+      - NXP Security Monitor and SFP driver
+      - interconnect config APIs using ARM CCN-CCI driver
+      - TZC APIs to configure DDR region
+      - generic timer driver
+      - Device configuration driver
+  - IMX
+    - Added support for image loading and io-storage driver for TBBR fip booting
+  - Renesas
+    - Added support for PFC and EMMC driver
+    - RZ Family:
+      - G2N, G2E and G2H SoCs
+        - Added support for watchdog, QoS, PFC and DRAM initialization
+    - RZG Family:
+      - G2M
+        - Added support for QoS and DRAM initialization
+  - Xilinx
+    - Added JTAG DCC support for Versal and ZynqMP SoC family.
+
+- Libraries
+
+  - C standard library
+    - Added support to print `%` in `snprintf()` and `printf()` APIs
+    - Added support for strtoull, strtoll, strtoul, strtol APIs from FreeBSD
+      project
+  - CPU support
+    - Added support for
+      - Cortex_A78C CPU
+      - Makalu ELP CPU
+      - Makalu CPU
+      - Matterhorn ELP CPU
+      - Neoverse-N2 CPU
+  - CPU Errata
+    - Arm Cortex-A76: Added workaround for erratum 1946160
+    - Arm Cortex-A77: Added workaround for erratum 1946167
+    - Arm Cortex-A78: Added workaround for erratum 1941498 and 1951500
+    - Arm Neoverse-N1: Added workaround for erratum 1946160
+  - Flattened device tree(libfdt)
+    - Added support for wrapper function to read UUIDs in string format from dtb
+
+- Platforms
+
+  - Added support for MediaTek MT8195
+  - Added support for Arm RD-N2 board
+  - Allwinner
+    - Added support for H616 SoC
+  - Arm
+    - Added support for GPT parser
+    - Protect GICR frames for fused/unused cores
+  - Arm Morello
+    - Added VirtIO network device to Morello FVP fdts
+  - Arm RD-N2
+    - Added support for variant 1 of RD-N2 platform
+    - Enable AMU support
+  - Arm RD-V1
+    - Enable AMU support
+  - Arm SGI
+    - Added support for platform variant build option
+  - Arm TC0
+    - Added Matterhorn ELP CPU support
+    - Added support for opteed
+  - Arm Juno
+    - Added support to use hw_config in BL31
+    - Use TRNG entropy source for SMCCC TRNG interface
+    - Condition Juno entropy source with CRC instructions
+  - Marvell Mochi
+    - Added support for detection of secure mode
+  - Marvell ARMADA
+    - Added support for new compile option A3720_DB_PM_WAKEUP_SRC
+    - Added support doing system reset via CM3 secure coprocessor
+    - Made several makefile enhancements required to build WTMI_MULTI_IMG and
+      TIMDDRTOOL
+    - Added support for building DOIMAGETOOL tool
+    - Added new target mrvl_bootimage
+  - Mediatek MT8192
+    - Added support for rtc power off sequence
+  - Mediatek MT8195
+    - Added support for SiP service
+  - STM32MP1
+    - Added support for
+      - Seeed ODYSSEY SoM and board
+      - SDMMC2 and I2C2 pins in pinctrl
+      - I2C2 peripheral in DTS
+      - PIE for BL32
+      - TZC-400 interrupt managament
+      - Linux Automation MC-1 board
+  - Renesas RZG
+    - Added support for identifying EK874 RZ/G2E board
+    - Added support for identifying HopeRun HiHope RZ/G2H and RZ/G2H boards
+  - Rockchip
+    - Added support for stack protector
+  - QEMU
+    - Added support for `max` CPU
+    - Added Cortex-A72 support to `virt` platform
+    - Enabled trigger reboot from secure pl061
+  - QEMU SBSA
+    - Added support for sbsa-ref Embedded Controller
+  - NXP
+    - Added support for warm reset to retain ddr content
+    - Added support for image loader necessary for loading fip image
+    - lx2160a SoC Family
+      - Added support for
+        - new platform lx2160a-aqds
+        - new platform lx2160a-rdb
+        - new platform lx2162a-aqds
+        - errata handling
+  - IMX imx8mm
+    - Added support for trusted board boot
+  - TI K3
+    - Added support for lite device board
+    - Enabled Cortex-A72 erratum 1319367
+    - Enabled Cortex-A53 erratum 1530924
+  - Xilinx ZynqMP
+    - Added support for PS and system reset on WDT restart
+    - Added support for error management
+    - Enable support for log messages necessary for debug
+    - Added support for PM API SMC call for efuse and register access
+
+- Processes
+
+  - Introduced process for platform deprecation
+  - Added documentation for TF-A threat model
+  - Provided a copy of the MIT license to comply with the license requirements
+    of the arm-gic.h source file (originating from the Linux kernel project and
+    re-distributed in TF-A).
+
+- Services
+
+  - Added support for TRNG firmware interface service
+  - Arm
+    - Added SiP service to configure Ethos-N NPU
+  - SPMC
+    - Added documentation for SPM(Hafnium) SMMUv3 driver
+  - SPMD
+    - Added support for
+      - FFA_INTERRUPT forwading ABI
+      - FFA_SECONDARY_EP_REGISTER ABI
+      - FF-A v1.0 boot time power management, SPMC secondary core boot and early
+        run-time power management
+
+- Tools
+
+  - FIPTool
+    - Added mechanism to allow platform specific image UUID
+  - git hooks
+    - Added support for conventional commits through commitlint hook, commitizen
+      hook and husky configuration files.
+  - NXP tool
+    - Added support for a tool that creates pbl file from BL2
+  - Renesas RZ/G2
+    - Added tool support for creating bootparam and cert_header images
+  - CertCreate
+    - Added support for platform-defined certificates, keys, and extensions
+      using the platform's makefile
+  - shared tools
+    - Added EFI_GUID representation to uuid helper data structure
+
+### Changed
+
+- Common components
+
+  - Print newline after hex address in aarch64 el3_panic function
+  - Use proper `#address-cells` and `#size-cells` for reserved-memory in dtbs
+
+- Drivers
+
+  - Move SCMI driver from ST platform directory and make it common to all
+    platforms
+  - Arm GICv3
+    - Shift eSPI register offset in GICD_OFFSET_64()
+    - Use mpidr to probe GICR for current CPU
+  - Arm TZC-400
+    - Adjust filter tag if it set to FILTER_BIT_ALL
+  - Cadence
+    - Enhance UART driver APIs to put characters to fifo
+  - Mediatek MT8192
+    - Move timer driver to common folder
+    - Enhanced sys_cirq driver to add more IC services
+  - Renesas
+    - Move ddr and delay driver to common directory
+  - Renesas rcar
+    - Treat log as device memory in console driver
+  - Renesas RZ Family:
+    - G2N and G2H SoCs
+      - Select MMC_CH1 for eMMC channel
+  - Marvell
+    - Added support for checking if TRNG unit is present
+  - Marvell A3K
+    - Set TXDCLK_2X_SEL bit during PCIe initialization
+    - Set mask parameter for every reg_set call
+  - Marvell Mochi
+    - Added missing stream IDs configurations
+  - MbedTLS
+    - Migrated to Mbed TLS v2.26.0
+  - IMX imx8mp
+    - Change the bl31 physical load address
+  - QEMU SBSA
+    - Enable secure variable storage
+  - SCMI
+    - Update power domain protocol version to 2.0
+  - STM32
+    - Remove dead code from nand FMC driver
+
+- Libraries
+
+  - C Standard Library
+    - Use macros to reduce duplicated code between snprintf and printf
+  - CPU support
+    - Sanity check pointers before use in AArch32 builds
+    - Arm Cortex-A78
+      - Remove rainier cpu workaround for errata 1542319
+    - Arm Makalu ELP
+      - Added "\_arm" suffix to Makalu ELP CPU lib
+
+- Miscellaneous
+
+  - Editorconfig
+    - set max line length to 100
+
+- Platforms
+
+  - Allwinner
+    - Added reserved-memory node to DT
+    - Express memmap more dynamically
+    - Move SEPARATE_NOBITS_REGION to platforms
+    - Limit FDT checks to reduce code size
+    - Use CPUIDLE hardware when available
+    - Allow conditional compilation of SCPI and native PSCI ops
+    - Always use a 3MHz RSB bus clock
+    - Enable workaround for Cortex-A53 erratum 1530924
+    - Fixed non-default PRELOADED_BL33_BASE
+    - Leave CPU power alone during BL31 setup
+    - Added several psci hooks enhancements to improve system shutdown/reset
+      sequence
+    - Return the PMIC to I2C mode after use
+    - Separate code to power off self and other CPUs
+    - Split native and SCPI-based PSCI implementations
+  - Allwinner H6
+    - Added R_PRCM security setup for H6 board
+    - Added SPC security setup for H6 board
+    - Use RSB for the PMIC connection on H6
+  - Arm
+    - Store UUID as a string, rather than ints
+    - Replace FIP base and size macro with a generic name
+    - Move compile time switch from source to dt file
+    - Don't provide NT_FW_CONFIG when booting hafnium
+    - Do not setup 'disabled' regulator
+    - Increase SP max size
+    - Remove false dependency of ARM_LINUX_KERNEL_AS_BL33 on RESET_TO_BL31 and
+      allow it to be enabled independently
+  - Arm FVP
+    - Do not map GIC region in BL1 and BL2
+  - Arm Juno
+    - Refactor juno_getentropy() to return 64 bits on each call
+  - Arm Morello
+    - Remove "virtio-rng" from Morello FVP
+    - Enable virtIO P9 device for Morello fvp
+  - Arm RDV1
+    - Allow all PSCI callbacks on RD-V1
+    - Rename rddaniel to rdv1
+  - Arm RDV1MC
+    - Rename rddanielxlr to rdv1mc
+    - Initialize TZC-400 controllers
+  - Arm TC0
+    - Updated GICR base address
+    - Use scmi_dvfs clock index 1 for cores 4-7 through fdt
+    - Added reserved-memory node for OP-TEE fdts
+    - Enabled Theodul DSU in TC platform
+    - OP-TEE as S-EL1 SP with SPMC at S-EL2
+    - Update Matterhorm ELP DVFS clock index
+  - Arm SGI
+    - Allow access to TZC controller on all chips
+    - Define memory regions for multi-chip platforms
+    - Allow access to nor2 flash and system registers from S-EL0
+    - Define default list of memory regions for DMC-620 TZC
+    - Improve macros defining cper buffer memory region
+    - Refactor DMC-620 error handling SMC function id
+    - Refactor SDEI specific macros
+    - Added platform id value for RDN2 platform
+    - Refactored header file inclusions and inclusion of memory mapping
+  - Arm RDN2
+    - Allow usage of secure partitions on RDN2 platform
+    - Update GIC redistributor and TZC base address
+  - Arm SGM775
+    - Deprecate Arm sgm775 FVP platform
+  - Marvell
+    - Increase TX FIFO EMPTY timeout from 2ms to 3ms
+    - Update delay code to be compatible with 1200 MHz CPU
+  - Marvell ARMADA
+    - Postpone MSS CPU startup to BL31 stage
+    - Allow builds without MSS support
+    - Use MSS SRAM in secure mode
+    - Added missing FORCE, .PHONY and clean targets
+    - Cleanup MSS SRAM if used for copy
+    - Move definition of mrvl_flash target to common marvell_common.mk file
+    - Show informative build messages and blank lines
+  - Marvell ARMADA A3K
+    - Added a new target mrvl_uart which builds UART image
+    - Added checks that WTP, MV_DDR_PATH and CRYPTOPP_PATH are correctly defined
+    - Allow use of the system Crypto++ library
+    - Build \$(WTMI_ENC_IMG) in \$(BUILD_PLAT) directory
+    - Build intermediate files in \$(BUILD_PLAT) directory
+    - Build UART image files directly in \$(BUILD_UART) subdirectory
+    - Correctly set DDR_TOPOLOGY and CLOCKSPRESET for WTMI
+    - Do not use 'echo -e' in Makefile
+    - Improve 4GB DRAM usage from 3.375 GB to 3.75 GB
+    - Remove unused variable WTMI_SYSINIT_IMG from Makefile
+    - Simplify check if WTP variable is defined
+    - Split building \$(WTMI_MULTI_IMG) and \$(TIMDDRTOOL)
+  - Marvell ARMADA A8K
+    - Allow CP1/CP2 mapping at BLE stage
+  - Mediatek MT8183
+    - Added timer V20 compensation
+  - Nvidia Tegra
+    - Rename SMC API
+  - TI K3
+    - Make plat_get_syscnt_freq2 helper check CNT_FID0 register
+    - Fill non-message data fields in sec_proxy with 0x0
+    - Update ti_sci_msg_req_reboot ABI to include domain
+    - Enable USE_COHERENT_MEM only for the generic board
+    - Explicitly map SEC_SRAM_BASE to 0x0
+    - Use BL31_SIZE instead of computing
+    - Define the correct number of max table entries and increase SRAM size to
+      account for additional table
+  - Raspberry Pi4
+    - Switch to gicv2.mk and GICV2_SOURCES
+  - Renesas
+    - Move headers and assembly files to common folder
+  - Renesas rzg
+    - Added device tree memory node enhancements
+  - Rockchip
+    - Switch to using common gicv3.mk
+  - STM32MP1
+    - Set BL sizes regardless of flags
+  - QEMU
+    - Include gicv2.mk for compiling GICv2 source files
+    - Change DEVICE2 definition for MMU
+    - Added helper to calculate the position shift from MPIDR
+  - QEMU SBSA
+    - Include libraries for Cortex-A72
+    - Increase SHARED_RAM_SIZE
+    - Addes support in spm_mm for upto 512 cores
+    - Added support for topology handling
+  - QTI
+    - Mandate SMC implementation
+  - Xilinx
+    - Rename the IPI CRC checksum macro
+    - Use fno-jump-tables flag in CPPFLAGS
+  - Xilinx versal
+    - Added the IPI CRC checksum macro support
+    - Mark IPI calls secure/non-secure
+    - Enable sgi to communicate with linux using IPI
+    - Remove Cortex-A53 compilation
+  - Xilinx ZynqMP
+    - Configure counter frequency during initialization
+    - Filter errors related to clock gate permissions
+    - Implement pinctrl request/release EEMI API
+    - Reimplement pinctrl get/set config parameter EEMI API calls
+    - Reimplement pinctrl set/get function EEMI API
+    - Update error codes to match Linux and PMU Firmware
+    - Update PM version and support PM version check
+    - Update return type in query functions
+    - Added missing ids for 43/46/47dr devices
+    - Checked for DLL status before doing reset
+    - Disable ITAPDLYENA bit for zero ITAP delay
+    - Include GICv2 makefile
+    - Remove the custom crash implementation
+
+- Services
+
+  - SPMD
+    - Lock the g_spmd_pm structure
+    - Declare third cactus instance as UP SP
+    - Provide number of vCPUs and VM size for first SP
+    - Remove `chosen` node from SPMC manifests
+    - Move OP-TEE SP manifest DTS to FVP platform
+    - Update OP-TEE SP manifest with device-regions node
+    - Remove device-memory node from SPMC manifests
+  - SPM_MM
+    - Use sp_boot_info to set SP context
+  - SDEI
+    - Updata the affinity of shared event
+
+- Tools
+
+  - FIPtool
+    - Do not print duplicate verbose lines about building fiptool
+  - CertCreate
+    - Updated tool for platform defined certs, keys & extensions
+    - Create only requested certificates
+    - Avoid duplicates in extension stack
+
+### Resolved Issues
+
+- Several fixes for typos and mis-spellings in documentation
+
+- Build system
+
+  - Fixed \$\{FIP_NAME} to be rebuilt only when needed in Makefile
+  - Do not mark file targets as .PHONY target in Makefile
+
+- Drivers
+
+  - Authorization
+    - Avoid NV counter upgrade without certificate validation
+  - Arm GICv3
+    - Fixed logical issue for num_eints
+    - Limit SPI ID to avoid misjudgement in GICD_OFFSET()
+    - Fixed potential GICD context override with ESPI enabled
+  - Marvell A3700
+    - Fixed configuring polarity invert bits
+  - Arm TZC-400
+    - Correct FAIL_CONTROL Privileged bit
+    - Fixed logical error in FILTER_BIT definitions
+  - Renesas rcar
+    - Fixed several coding style violations reported by checkpatch
+
+- Libraries
+
+  - Arch helpers
+    - Fixed assertions in processing dynamic relocations for AArch64 builds
+  - C standard library
+    - Fixed MISRA issues in memset() ABI
+  - RAS
+    - Fixed bug of binary search in RAS interrupt handler
+
+- Platforms
+
+  - Arm
+    - Fixed missing copyrights in arm-gic.h file
+    - Fixed the order of header files in several dts files
+    - Fixed error message printing in board makefile
+    - Fixed bug of overriding the last node in image load helper API
+    - Fixed stdout-path in fdts files of TC0 and N1SDP platforms
+    - Turn ON/OFF redistributor in sync with GIC CPU interface ON/OFF for css
+      platforms
+  - Arm FVP
+    - Fixed Generic Timer interrupt types in platform dts files
+  - Arm Juno
+    - Fixed parallel build issue for romlib config
+  - Arm SGI
+    - Fixed bug in SDEI receive event of RAS handler
+  - Intel Agilex
+    - Fixed PLAT_MAX_PWR_LVL value
+  - Marvell
+    - Fixed SPD handling in dram port
+  - Marvell ARMADA
+    - Fixed TRNG return SMC handling
+    - Fixed the logic used for LD selector mask
+    - Fixed MSS firmware loader for A8K family
+  - ST
+    - Fixed few violations reported by coverity static checks
+  - STM32MP1
+    - Fixed SELFREF_TO_X32 mask in ddr driver
+    - Do not keep mmc_device_info in stack
+    - Correct plat_crash_console_flush()
+  - QEMU SBSA
+    - Fixed memory type of secure NOR flash
+  - QTI
+    - Fixed NUM_APID and REG_APID_MAP() argument in SPMI driver
+  - Intel
+    - Do not keep mmc_device_info in stack
+  - Hisilicon
+    - Do not keep mmc_device_info in stack
+
+- Services
+
+  - EL3 runtime
+    - Fixed the EL2 context save/restore routine by removing EL2 generic timer
+      system registers
+    - Added fix for exception handler in BL31 by synchronizing pending EA using
+      DSB barrier
+  - SPMD
+    - Fixed error codes to use int32_t type
+  - TSPD
+    - Added bug fix in tspd interrupt handling when TSP_NS_INTR_ASYNC_PREEMPT is
+      enabled
+  - TRNG
+    - Fixed compilation errors with -O0 compile option
+  - DebugFS
+    - Checked channel index before calling clone function
+  - PSCI
+    - Fixed limit of 256 CPUs caused by cast to unsigned char
+  - TSP
+    - Fixed compilation erros when built with GCC 11.0.0 toolchain
+
+- Tools
+
+  - FIPtool
+    - Do not call `make clean` for `all` target
+  - CertCreate
+    - Fixed bug to avoid cleaning when building the binary
+    - Used preallocated parts of the HASH struct to avoid leaking HASH struct
+      fields
+    - Free arguments copied with strdup
+    - Free keys after use
+    - Free X509_EXTENSION structures on stack to avoid leaking them
+    - Optimized the code to avoid unnecessary attempts to create non-requested
+      certificates
+
+## 2.4.0 (2020-11-17)
+
+### New Features
+
+- Architecture support
+  - Armv8.6-A
+    - Added support for Armv8.6 Enhanced Counter Virtualization (ECV)
+    - Added support for Armv8.6 Fine Grained Traps (FGT)
+    - Added support for Armv8.6 WFE trap delays
+- Bootloader images
+  - Added support for Measured Boot
+- Build System
+  - Added build option `COT_DESC_IN_DTB` to create Chain of Trust at runtime
+  - Added build option `OPENSSL_DIR` to direct tools to OpenSSL libraries
+  - Added build option `RAS_TRAP_LOWER_EL_ERR_ACCESS` to enable trapping RAS
+    register accesses from EL1/EL2 to EL3
+  - Extended build option `BRANCH_PROTECTION` to support branch target
+    identification
+- Common components
+  - Added support for exporting CPU nodes to the device tree
+  - Added support for single and dual-root Chains of Trust in secure partitions
+- Drivers
+  - Added Broadcom RNG driver
+  - Added Marvell `mg_conf_cm3` driver
+  - Added System Control and Management Interface (SCMI) driver
+  - Added STMicroelectronics ETZPC driver
+  - Arm GICv3
+    - Added support for detecting topology at runtime
+  - Dual Root
+    - Added support for platform certificates
+  - Marvell Cache LLC
+    - Added support for mapping the entire LLC into SRAM
+  - Marvell CCU
+    - Added workaround for erratum 3033912
+  - Marvell CP110 COMPHY
+    - Added support for SATA COMPHY polarity inversion
+    - Added support for USB COMPHY polarity inversion
+    - Added workaround for erratum IPCE_COMPHY-1353
+  - STM32MP1 Clocks
+    - Added `RTC` as a gateable clock
+    - Added support for shifted clock selector bit masks
+    - Added support for using additional clocks as parents
+- Libraries
+  - C standard library
+    - Added support for hexadecimal and pointer format specifiers in `snprint()`
+    - Added assembly alternatives for various library functions
+  - CPU support
+    - Arm Cortex-A53
+      - Added workaround for erratum 1530924
+    - Arm Cortex-A55
+      - Added workaround for erratum 1530923
+    - Arm Cortex-A57
+      - Added workaround for erratum 1319537
+    - Arm Cortex-A76
+      - Added workaround for erratum 1165522
+      - Added workaround for erratum 1791580
+      - Added workaround for erratum 1868343
+    - Arm Cortex-A72
+      - Added workaround for erratum 1319367
+    - Arm Cortex-A77
+      - Added workaround for erratum 1508412
+      - Added workaround for erratum 1800714
+      - Added workaround for erratum 1925769
+    - Arm Neoverse-N1
+      - Added workaround for erratum 1868343
+  - EL3 Runtime
+    - Added support for saving/restoring registers related to nested
+      virtualization in EL2 context switches if the architecture supports it
+  - FCONF
+    - Added support for Measured Boot
+    - Added support for populating Chain of Trust properties
+    - Added support for loading the `fw_config` image
+  - Measured Boot
+    - Added support for event logging
+- Platforms
+  - Added support for Arm Morello
+  - Added support for Arm TC0
+  - Added support for iEi PUZZLE-M801
+  - Added support for Marvell OCTEON TX2 T9130
+  - Added support for MediaTek MT8192
+  - Added support for NXP i.MX 8M Nano
+  - Added support for NXP i.MX 8M Plus
+  - Added support for QTI CHIP SC7180
+  - Added support for STM32MP151F
+  - Added support for STM32MP153F
+  - Added support for STM32MP157F
+  - Added support for STM32MP151D
+  - Added support for STM32MP153D
+  - Added support for STM32MP157D
+  - Arm
+    - Added support for platform-owned SPs
+    - Added support for resetting to BL31
+  - Arm FPGA
+    - Added support for Klein
+    - Added support for Matterhorn
+    - Added support for additional CPU clusters
+  - Arm FVP
+    - Added support for performing SDEI platform setup at runtime
+    - Added support for SMCCC's `SMCCC_ARCH_SOC_ID` command
+    - Added an `id` field under the NV-counter node in the device tree to
+      differentiate between trusted and non-trusted NV-counters
+    - Added support for extracting the clock frequency from the timer node in
+      the device tree
+  - Arm Juno
+    - Added support for SMCCC's `SMCCC_ARCH_SOC_ID` command
+  - Arm N1SDP
+    - Added support for cross-chip PCI-e
+  - Marvell
+    - Added support for AVS reduction
+  - Marvell ARMADA
+    - Added support for twin-die combined memory device
+  - Marvell ARMADA A8K
+    - Added support for DDR with 32-bit bus width (both ECC and non-ECC)
+  - Marvell AP806
+    - Added workaround for erratum FE-4265711
+  - Marvell AP807
+    - Added workaround for erratum 3033912
+  - Nvidia Tegra
+    - Added debug printouts indicating SC7 entry sequence completion
+    - Added support for SDEI
+    - Added support for stack protection
+    - Added support for GICv3
+    - Added support for SMCCC's `SMCCC_ARCH_SOC_ID` command
+  - Nvidia Tegra194
+    - Added support for RAS exception handling
+    - Added support for SPM
+  - NXP i.MX
+    - Added support for SDEI
+  - QEMU SBSA
+    - Added support for the Secure Partition Manager
+  - QTI
+    - Added RNG driver
+    - Added SPMI PMIC arbitrator driver
+    - Added support for SMCCC's `SMCCC_ARCH_SOC_ID` command
+  - STM32MP1
+    - Added support for exposing peripheral interfaces to the non-secure world
+      at runtime
+    - Added support for SCMI clock and reset services
+    - Added support for STM32MP15x CPU revision Z
+    - Added support for SMCCC services in `SP_MIN`
+- Services
+  - Secure Payload Dispatcher
+    - Added a provision to allow clients to retrieve the service UUID
+  - SPMC
+    - Added secondary core endpoint information to the SPMC context structure
+  - SPMD
+    - Added support for booting OP-TEE as a guest S-EL1 Secure Partition on top
+      of Hafnium in S-EL2
+    - Added a provision for handling SPMC messages to register secondary core
+      entry points
+    - Added support for power management operations
+- Tools
+  - CertCreate
+    - Added support for secure partitions
+  - CertTool
+    - Added support for the `fw_config` image
+  - FIPTool
+    - Added support for the `fw_config` image
+
+### Changed
+
+- Architecture support
+- Bootloader images
+- Build System
+  - The top-level Makefile now supports building FipTool on Windows
+  - The default value of `KEY_SIZE` has been changed to to 2048 when RSA is in
+    use
+  - The previously-deprecated macro `__ASSEMBLY__` has now been removed
+- Common components
+  - Certain functions that flush the console will no longer return error
+    information
+- Drivers
+  - Arm GIC
+    - Usage of `drivers/arm/gic/common/gic_common.c` has now been deprecated in
+      favour of `drivers/arm/gic/vX/gicvX.mk`
+    - Added support for detecting the presence of a GIC600-AE
+    - Added support for detecting the presence of a GIC-Clayton
+  - Marvell MCI
+    - Now performs link tuning for all MCI interfaces to improve performance
+  - Marvell MoChi
+    - PIDI masters are no longer forced into a non-secure access level when
+      `LLC_SRAM` is enabled
+    - The SD/MMC controllers are now accessible from guest virtual machines
+  - Mbed TLS
+    - Migrated to Mbed TLS v2.24.0
+  - STM32 FMC2 NAND
+    - Adjusted FMC node bindings to include an EBI controller node
+  - STM32 Reset
+    - Added an optional timeout argument to assertion functions
+  - STM32MP1 Clocks
+    - Enabled several additional system clocks during initialization
+- Libraries
+  - C Standard Library
+    - Improved `memset` performance by avoiding single-byte writes
+    - Added optimized assembly variants of `memset`
+  - CPU support
+    - Renamed Cortex-Hercules to Cortex-A78
+    - Renamed Cortex-Hercules AE to Cortex-A78 AE
+    - Renamed Neoverse Zeus to Neoverse V1
+  - Coreboot
+    - Updated ‘coreboot_get_memory_type’ API to take an extra argument as a
+      ’memory size’ that used to return a valid memory type.
+  - libfdt
+    - Updated to latest upstream version
+- Platforms
+  - Allwinner
+    - Disabled non-secure access to PRCM power control registers
+  - Arm
+    - `BL32_BASE` is now platform-dependent when `SPD_spmd` is enabled
+    - Added support for loading the Chain of Trust from the device tree
+    - The firmware update check is now executed only once
+    - NV-counter base addresses are now loaded from the device tree when
+      `COT_DESC_IN_DTB` is enabled
+    - Now loads and populates `fw_config` and `tb_fw_config`
+    - FCONF population now occurs after caches have been enabled in order to
+      reduce boot times
+  - Arm Corstone-700
+    - Platform support has been split into both an FVP and an FPGA variant
+  - Arm FPGA
+    - DTB and BL33 load addresses have been given sensible default values
+    - Now reads generic timer counter frequency, GICD and GICR base addresses,
+      and UART address from DT
+    - Now treats the primary PL011 UART as an SBSA Generic UART
+  - Arm FVP
+    - Secure interrupt descriptions, UART parameters, clock frequencies and
+      GICv3 parameters are now queried through FCONF
+    - UART parameters are now queried through the device tree
+    - Added an owner field to Cactus secure partitions
+    - Increased the maximum size of BL2 when the Chain of Trust is loaded from
+      the device tree
+    - Reduces the maximum size of BL31
+    - The `FVP_USE_SP804_TIMER` and `FVP_VE_USE_SP804_TIMER` build options have
+      been removed in favour of a common `USE_SP804_TIMER` option
+    - Added a third Cactus partition to manifests
+    - Device tree nodes now store UUIDs in big-endian
+  - Arm Juno
+    - Increased the maximum size of BL2 when optimizations have not been applied
+    - Reduced the maximum size of BL31 and BL32
+  - Marvell AP807
+    - Enabled snoop filters
+  - Marvell ARMADA A3K
+    - UART recovery images are now suffixed with `.bin`
+  - Marvell ARMADA A8K
+    - Option `BL31_CACHE_DISABLE` is now disabled (`0`) by default
+  - Nvidia Tegra
+    - Added VPR resize supported check when processing video memory resize
+      requests
+    - Added SMMU verification to prevent potential issues caused by undetected
+      corruption of the SMMU configuration during boot
+    - The GIC CPU interface is now properly disabled after CPU off
+    - The GICv2 sources list and the `BL31_SIZE` definition have been made
+      platform-specific
+    - The SPE driver will no longer flush the console when writing individual
+      characters
+  - Nvidia Tegra194
+    - TZDRAM setup has been moved to platform-specific early boot handlers
+    - Increased verbosity of debug prints for RAS SErrors
+    - Support for powering down CPUs during CPU suspend has been removed
+    - Now verifies firewall settings before using resources
+  - TI K3
+    - The UART number has been made configurable through `K3_USART`
+  - Rockchip RK3368
+    - The maximum number of memory map regions has been increased to 20
+  - Socionext Uniphier
+    - The maximum size of BL33 has been increased to support larger bootloaders
+  - STM32
+    - Removed platform-specific DT functions in favour of using existing generic
+      alternatives
+  - STM32MP1
+    - Increased verbosity of exception reports in debug builds
+    - Device trees have been updated to align with the Linux kernel
+    - Now uses the ETZPC driver to configure secure-aware interfaces for
+      assignment to the non-secure world
+    - Finished good variants have been added to the board identifier
+      enumerations
+    - Non-secure access to clocks and reset domains now depends on their state
+      of registration
+    - NEON is now disabled in `SP_MIN`
+    - The last page of `SYSRAM` is now used as SCMI shared memory
+    - Checks to verify platform compatibility have been added to verify that an
+      image is compatible with the chip ID of the running platform
+  - QEMU SBSA
+    - Removed support for Arm's Cortex-A53
+- Services
+  - Renamed SPCI to FF-A
+  - SPMD
+    - No longer forwards requests to the non-secure world when retrieving
+      partition information
+    - SPMC manifest size is now retrieved directly from SPMD instead of the
+      device tree
+    - The FF-A version handler now returns SPMD's version when the origin of the
+      call is secure, and SPMC's version when the origin of the call is
+      non-secure
+  - SPMC
+    - Updated the manifest to declare CPU nodes in descending order as per the
+      SPM (Hafnium) multicore requirement
+    - Updated the device tree to mark 2GB as device memory for the first
+      partition excluding trusted DRAM region (which is reserved for SPMC)
+    - Increased the number of EC contexts to the maximum number of PEs as per
+      the FF-A specification
+- Tools
+  - FIPTool
+    - Now returns `0` on `help` and `help <command>`
+  - Marvell DoImage
+    - Updated Mbed TLS support to v2.8
+  - SPTool
+    - Now appends CertTool arguments
+
+### Resolved Issues
+
+- Bootloader images
+  - Fixed compilation errors for dual-root Chains of Trust caused by symbol
+    collision
+  - BL31
+    - Fixed compilation errors on platforms with fewer than 4 cores caused by
+      initialization code exceeding the end of the stacks
+    - Fixed compilation errors when building a position-independent image
+- Build System
+  - Fixed invalid empty version strings
+  - Fixed compilation errors on Windows caused by a non-portable architecture
+    revision comparison
+- Drivers
+  - Arm GIC
+    - Fixed spurious interrupts caused by a missing barrier
+  - STM32 Flexible Memory Controller 2 (FMC2) NAND driver
+    - Fixed runtime instability caused by incorrect error detection logic
+  - STM32MP1 Clock driver
+    - Fixed incorrectly-formatted log messages
+    - Fixed runtime instability caused by improper clock gating procedures
+  - STMicroelectronics Raw NAND driver
+    - Fixed runtime instability caused by incorrect unit conversion when waiting
+      for NAND readiness
+- Libraries
+  - AMU
+    - Fixed timeout errors caused by excess error logging
+  - EL3 Runtime
+    - Fixed runtime instability caused by improper register save/restore routine
+      in EL2
+  - FCONF
+    - Fixed failure to initialize GICv3 caused by overly-strict device tree
+      requirements
+  - Measured Boot
+    - Fixed driver errors caused by a missing default value for the `HASH_ALG`
+      build option
+  - SPE
+    - Fixed feature detection check that prevented CPUs supporting SVE from
+      detecting support for SPE in the non-secure world
+  - Translation Tables
+    - Fixed various MISRA-C 2012 static analysis violations
+- Platforms
+  - Allwinner A64
+    - Fixed USB issues on certain battery-powered device caused by improperly
+      activated USB power rail
+  - Arm
+    - Fixed compilation errors caused by increase in BL2 size
+    - Fixed compilation errors caused by missing Makefile dependencies to
+      generated files when building the FIP
+    - Fixed MISRA-C 2012 static analysis violations caused by unused structures
+      in include directives intended to be feature-gated
+  - Arm FPGA
+    - Fixed initialization issues caused by incorrect MPIDR topology mapping
+      logic
+  - Arm RD-N1-edge
+    - Fixed compilation errors caused by mismatched parentheses in Makefile
+  - Arm SGI
+    - Fixed crashes due to the flash memory used for cold reboot attack
+      protection not being mapped
+  - Intel Agilex
+    - Fixed initialization issues caused by several compounding bugs
+  - Marvell
+    - Fixed compilation warnings caused by multiple Makefile inclusions
+  - Marvell ARMADA A3K
+    - Fixed boot issue in debug builds caused by checks on the BL33 load address
+      that are not appropriate for this platform
+  - Nvidia Tegra
+    - Fixed incorrect delay timer reads
+    - Fixed spurious interrupts in the non-secure world during cold boot caused
+      by the arbitration bit in the memory controller not being cleared
+    - Fixed faulty video memory resize sequence
+  - Nvidia Tegra194
+    - Fixed incorrect alignment of TZDRAM base address
+  - NXP iMX8M
+    - Fixed CPU hot-plug issues caused by race condition
+  - STM32MP1
+    - Fixed compilation errors in highly-parallel builds caused by incorrect
+      Makefile dependencies
+  - STM32MP157C-ED1
+    - Fixed initialization issues caused by missing device tree hash node
+  - Raspberry Pi 3
+    - Fixed compilation errors caused by incorrect dependency ordering in
+      Makefile
+  - Rockchip
+    - Fixed initialization issues caused by non-critical errors when parsing FDT
+      being treated as critical
+  - Rockchip RK3368
+    - Fixed runtime instability caused by incorrect CPUID shift value
+  - QEMU
+    - Fixed compilation errors caused by incorrect dependency ordering in
+      Makefile
+  - QEMU SBSA
+    - Fixed initialization issues caused by FDT exceeding reserved memory size
+  - QTI
+    - Fixed compilation errors caused by inclusion of a non-existent file
+- Services
+  - FF-A (previously SPCI)
+    - Fixed SPMD aborts caused by incorrect behaviour when the manifest is
+      page-aligned
+- Tools
+  - Fixed compilation issues when compiling tools from within their respective
+    directories
+  - FIPTool
+    - Fixed command line parsing issues on Windows when using arguments whose
+      names also happen to be a subset of another's
+  - Marvell DoImage
+    - Fixed PKCS signature verification errors at boot on some platforms caused
+      by generation of misaligned images
+
+### Known Issues
+
+- Platforms
+  - NVIDIA Tegra
+    - Signed comparison compiler warnings occurring in libfdt are currently
+      being worked around by disabling the warning for the platform until the
+      underlying issue is resolved in libfdt
+
+## 2.3 (2020-04-20)
+
+### New Features
+
+- Arm Architecture
+  - Add support for Armv8.4-SecEL2 extension through the SPCI defined SPMD/SPMC
+    components.
+  - Build option to support EL2 context save and restore in the secure world
+    (CTX_INCLUDE_EL2_REGS).
+  - Add support for SMCCC v1.2 (introducing the new SMCCC_ARCH_SOC_ID SMC). Note
+    that the support is compliant, but the SVE registers save/restore will be
+    done as part of future S-EL2/SPM development.
+- BL-specific
+  - Enhanced BL2 bootloader flow to load secure partitions based on firmware
+    configuration data (fconf).
+  - Changes necessary to support SEPARATE_NOBITS_REGION feature
+  - TSP and BL2_AT_EL3: Add Position Independent Execution `PIE` support
+- Build System
+  - Add support for documentation build as a target in Makefile
+  - Add `COT` build option to select the Chain of Trust to use when the Trusted
+    Boot feature is enabled (default: `tbbr`).
+  - Added creation and injection of secure partition packages into the FIP.
+  - Build option to support SPMC component loading and run at S-EL1 or S-EL2
+    (SPMD_SPM_AT_SEL2).
+  - Enable MTE support
+  - Enable Link Time Optimization in GCC
+  - Enable -Wredundant-decls warning check
+  - Makefile: Add support to optionally encrypt BL31 and BL32
+  - Add support to pass the nt_fw_config DTB to OP-TEE.
+  - Introduce per-BL `CPPFLAGS`, `ASFLAGS`, and `LDFLAGS`
+  - build_macros: Add CREATE_SEQ function to generate sequence of numbers
+- CPU Support
+  - cortex-a57: Enable higher performance non-cacheable load forwarding
+  - Hercules: Workaround for Errata 1688305
+  - Klein: Support added for Klein CPU
+  - Matterhorn: Support added for Matterhorn CPU
+- Drivers
+  - auth: Add `calc_hash` function for hash calculation. Used for authentication
+    of images when measured boot is enabled.
+  - cryptocell: Add authenticated decryption framework, and support for
+    CryptoCell-713 and CryptoCell-712 RSA 3K
+  - gic600: Add support for multichip configuration and Clayton
+  - gicv3: Introduce makefile, Add extended PPI and SPI range, Add support for
+    probing multiple GIC Redistributor frames
+  - gicv4: Add GICv4 extension for GIC driver
+  - io: Add an IO abstraction layer to load encrypted firmwares
+  - mhu: Derive doorbell base address
+  - mtd: Add SPI-NOR, SPI-NAND, SPI-MEM, and raw NAND framework
+  - scmi: Allow use of multiple SCMI channels
+  - scu: Add a driver for snoop control unit
+- Libraries
+  - coreboot: Add memory range parsing and use generic base address
+  - compiler_rt: Import popcountdi2.c and popcountsi2.c files, aeabi_ldivmode.S
+    file and dependencies
+  - debugFS: Add DebugFS functionality
+  - el3_runtime: Add support for enabling S-EL2
+  - fconf: Add Firmware Configuration Framework (fconf) (experimental).
+  - libc: Add memrchr function
+  - locks: bakery: Use is_dcache_enabled() helper and add a DMB to the
+    'read_cache_op' macro
+  - psci: Add support to enable different personality of the same soc.
+  - xlat_tables_v2: Add support to pass shareability attribute for normal memory
+    region, use get_current_el_maybe_constant() in is_dcache_enabled(),
+    read-only xlat tables for BL31 memory, and add enable_mmu()
+- New Platforms Support
+  - arm/arm_fpga: New platform support added for FPGA
+  - arm/rddaniel: New platform support added for rd-daniel platform
+  - brcm/stingray: New platform support added for Broadcom stingray platform
+  - nvidia/tegra194: New platform support for Nvidia Tegra194 platform
+- Platforms
+  - allwinner: Implement PSCI system suspend using SCPI, add a msgbox driver for
+    use with SCPI, and reserve and map space for the SCP firmware
+  - allwinner: axp: Add AXP805 support
+  - allwinner: power: Add DLDO4 power rail
+  - amlogic: axg: Add a build flag when using ATOS as BL32 and support for the
+    A113D (AXG) platform
+  - arm/a5ds: Add ethernet node and L2 cache node in devicetree
+  - arm/common: Add support for the new `dualroot` chain of trust
+  - arm/common: Add support for SEPARATE_NOBITS_REGION
+  - arm/common: Re-enable PIE when RESET_TO_BL31=1
+  - arm/common: Allow boards to specify second DRAM Base address and to define
+    PLAT_ARM_TZC_FILTERS
+  - arm/corstone700: Add support for mhuv2 and stack protector
+  - arm/fvp: Add support for fconf in BL31 and SP_MIN. Populate power domain
+    descriptor dynamically by leveraging fconf APIs.
+  - arm/fvp: Add Cactus/Ivy Secure Partition information and use two instances
+    of Cactus at S-EL1
+  - arm/fvp: Add support to run BL32 in TDRAM and BL31 in secure DRAM
+  - arm/fvp: Add support for GICv4 extension and BL2 hash calculation in BL1
+  - arm/n1sdp: Setup multichip gic routing table, update platform macros for
+    dual-chip setup, introduce platform information SDS region, add support to
+    update presence of External LLC, and enable the NEOVERSE_N1_EXTERNAL_LLC
+    flag
+  - arm/rdn1edge: Add support for dual-chip configuration and use CREATE_SEQ
+    helper macro to compare chip count
+  - arm/sgm: Always use SCMI for SGM platforms
+  - arm/sgm775: Add support for dynamic config using fconf
+  - arm/sgi: Add multi-chip mode parameter in HW_CONFIG dts, macros for remote
+    chip device region, chip_id and multi_chip_mode to platform variant info,
+    and introduce number of chips macro
+  - brcm: Add BL2 and BL31 support common across Broadcom platforms
+  - brcm: Add iproc SPI Nor flash support, spi driver, emmc driver, and support
+    to retrieve plat_toc_flags
+  - hisilicon: hikey960: Enable system power off callback
+  - intel: Enable bridge access, SiP SMC secure register access, and uboot
+    entrypoint support
+  - intel: Implement platform specific system reset 2
+  - intel: Introduce mailbox response length handling
+  - imx: console: Use CONSOLE_T_BASE for UART base address and generic console_t
+    data structure
+  - imx8mm: Provide uart base as build option and add the support for opteed spd
+    on imx8mq/imx8mm
+  - imx8qx: Provide debug uart num as build
+  - imx8qm: Apply clk/pinmux configuration for DEBUG_CONSOLE and provide debug
+    uart num as build param
+  - marvell: a8k: Implement platform specific power off and add support for
+    loading MG CM3 images
+  - mediatek: mt8183: Add Vmodem/Vcore DVS init level
+  - qemu: Support optional encryption of BL31 and BL32 images and
+    ARM_LINUX_KERNEL_AS_BL33 to pass FDT address
+  - qemu: Define ARMV7_SUPPORTS_VFP
+  - qemu: Implement PSCI_CPU_OFF and qemu_system_off via semihosting
+  - renesas: rcar_gen3: Add new board revision for M3ULCB
+  - rockchip: Enable workaround for erratum 855873, claim a macro to enable hdcp
+    feature for DP, enable power domains of rk3399 before reset, add support for
+    UART3 as serial output, and initialize reset and poweroff GPIOs with known
+    invalid value
+  - rpi: Implement PSCI CPU_OFF, use MMIO accessor, autodetect Mini-UART vs.
+    PL011 configuration, and allow using PL011 UART for RPi3/RPi4
+  - rpi3: Include GPIO driver in all BL stages and use same "clock-less" setup
+    scheme as RPi4
+  - rpi3/4: Add support for offlining CPUs
+  - st: stm32mp1: platform.mk: Support generating multiple images in one build,
+    migrate to implicit rules, derive map file name from target name, generate
+    linker script with fixed name, and use PHONY for the appropriate targets
+  - st: stm32mp1: Add support for SPI-NOR, raw NAND, and SPI-NAND boot device,
+    QSPI, FMC2 driver
+  - st: stm32mp1: Use stm32mp_get_ddr_ns_size() function, set XN attribute for
+    some areas in BL2, dynamically map DDR later and non-cacheable during its
+    test, add a function to get non-secure DDR size, add DT helper for reg by
+    name, and add compilation flags for boot devices
+  - socionext: uniphier: Turn on ENABLE_PIE
+  - ti: k3: Add PIE support
+  - xilinx: versal: Add set wakeup source, client wakeup, query data, request
+    wakeup, PM_INIT_FINALIZE, PM_GET_TRUSTZONE_VERSION, PM IOCTL, support for
+    suspend related, and Get_ChipID APIs
+  - xilinx: versal: Implement power down/restart related EEMI, SMC handler for
+    EEMI, PLL related PM, clock related PM, pin control related PM, reset
+    related PM, device related PM , APIs
+  - xilinx: versal: Enable ipi mailbox service
+  - xilinx: versal: Add get_api_version support and support to send PM API to
+    PMC using IPI
+  - xilinx: zynqmp: Add checksum support for IPI data, GET_CALLBACK_DATA
+    function, support to query max divisor, CLK_SET_RATE_PARENT in gem clock
+    node, support for custom type flags, LPD WDT clock to the pm_clock
+    structure, idcodes for new RFSoC silicons ZU48DR and ZU49DR, and id for new
+    RFSoC device ZU39DR
+- Security
+  - Use Speculation Barrier instruction for v8.5+ cores
+  - Add support for optional firmware encryption feature (experimental).
+  - Introduce a new `dualroot` chain of trust.
+  - aarch64: Prevent speculative execution past ERET
+  - aarch32: Stop speculative execution past exception returns.
+- SPCI
+  - Introduced the Secure Partition Manager Dispatcher (SPMD) component as a new
+    standard service.
+- Tools
+  - cert_create: Introduce CoT build option and TBBR CoT makefile, and define
+    the dualroot CoT
+  - encrypt_fw: Add firmware authenticated encryption tool
+  - memory: Add show_memory script that prints a representation of the memory
+    layout for the latest build
+
+### Changed
+
+- Arm Architecture
+  - PIE: Make call to GDT relocation fixup generalized
+- BL-Specific
+  - Increase maximum size of BL2 image
+  - BL31: Discard .dynsym .dynstr .hash sections to make ENABLE_PIE work
+  - BL31: Split into two separate memory regions
+  - Unify BL linker scripts and reduce code duplication.
+- Build System
+  - Changes to drive cert_create for dualroot CoT
+  - Enable -Wlogical-op always
+  - Enable -Wshadow always
+  - Refactor the warning flags
+  - PIE: Pass PIE options only to BL31
+  - Reduce space lost to object alignment
+  - Set lld as the default linker for Clang builds
+  - Remove -Wunused-const-variable and -Wpadded warning
+  - Remove -Wmissing-declarations warning from WARNING1 level
+- Drivers
+  - authentication: Necessary fix in drivers to upgrade to mbedtls-2.18.0
+  - console: Integrate UART base address in generic console_t
+  - gicv3: Change API for GICR_IPRIORITYR accessors and separate GICD and GICR
+    accessor functions
+  - io: Change seek offset to signed long long and panic in case of io setup
+    failure
+  - smmu: SMMUv3: Changed retry loop to delay timer
+  - tbbr: Reduce size of hash and ECDSA key buffers when possible
+- Library Code
+  - libc: Consolidate the size_t, unified, and NULL definitions, and unify
+    intmax_t and uintmax_t on AArch32/64
+  - ROMLIB: Optimize memory layout when ROMLIB is used
+  - xlat_tables_v2: Use ARRAY_SIZE in REGISTER_XLAT_CONTEXT_FULL_SPEC, merge
+    REGISTER_XLAT_CONTEXT\_{FULL_SPEC,RO_BASE_TABLE}, and simplify end address
+    checks in mmap_add_region_check()
+- Platforms
+  - allwinner: Adjust SRAM A2 base to include the ARISC vectors, clean up MMU
+    setup, reenable USE_COHERENT_MEM, remove unused include path, move the
+    NOBITS region to SRAM A1, convert AXP803 regulator setup code into a driver,
+    enable clock before resetting I2C/RSB
+  - allwinner: h6: power: Switch to using the AXP driver
+  - allwinner: a64: power: Use fdt_for_each_subnode, remove obsolete register
+    check, remove duplicate DT check, and make sunxi_turn_off_soc static
+  - allwinner: Build PMIC bus drivers only in BL31, clean up PMIC-related error
+    handling, and synchronize PMIC enumerations
+  - arm/a5ds: Change boot address to point to DDR address
+  - arm/common: Check for out-of-bound accesses in the platform io policies
+  - arm/corstone700: Updating the kernel arguments to support initramfs, use
+    fdts DDR memory and XIP rootfs, and set UART clocks to 32MHz
+  - arm/fvp: Modify multithreaded dts file of DynamIQ FVPs, slightly bump the
+    stack size for bl1 and bl2, remove re-definition of topology related build
+    options, stop reclaiming init code with Clang builds, and map only the
+    needed DRAM region statically in BL31/SP_MIN
+  - arm/juno: Maximize space allocated to SCP_BL2
+  - arm/sgi: Bump bl1 RW limit, mark remote chip shared ram as non-cacheable,
+    move GIC related constants to board files, include AFF3 affinity in core
+    position calculation, move bl31_platform_setup to board file, and move
+    topology information to board folder
+  - common: Refactor load_auth_image_internal().
+  - hisilicon: Remove uefi-tools in hikey and hikey960 documentation
+  - intel: Modify non secure access function, BL31 address mapping, mailbox's
+    get_config_status, and stratix10 BL31 parameter handling
+  - intel: Remove un-needed checks for qspi driver r/w and s10 unused source
+    code
+  - intel: Change all global sip function to static
+  - intel: Refactor common platform code
+  - intel: Create SiP service header file
+  - marvell: armada: scp_bl2: Allow loading up to 8 images
+  - marvell: comphy-a3700: Support SGMII COMPHY power off and fix USB3 powering
+    on when on lane 2
+  - marvell: Consolidate console register calls
+  - mediatek: mt8183: Protect 4GB~8GB dram memory, refine GIC driver for low
+    power scenarios, and switch PLL/CLKSQ/ck_off/axi_26m control to SPM
+  - qemu: Update flash address map to keep FIP in secure FLASH0
+  - renesas: rcar_gen3: Update IPL and Secure Monitor Rev.2.0.6, update DDR
+    setting for H3, M3, M3N, change fixed destination address of BL31 and BL32,
+    add missing #{address,size}-cells into generated DT, pass DT to OpTee OS,
+    and move DDR drivers out of staging
+  - rockchip: Make miniloader ddr_parameter handling optional, cleanup securing
+    of ddr regions, move secure init to separate file, use base+size for secure
+    ddr regions, bring TZRAM_SIZE values in lined, and prevent macro expansion
+    in paths
+  - rpi: Move plat_helpers.S to common
+  - rpi3: gpio: Simplify GPIO setup
+  - rpi4: Skip UART initialisation
+  - st: stm32m1: Use generic console_t data structure, remove second QSPI flash
+    instance, update for FMC2 pin muxing, and reduce MAX_XLAT_TABLES to 4
+  - socionext: uniphier: Make on-chip SRAM and I/O register regions configurable
+  - socionext: uniphier: Make PSCI related, counter control, UART, pinmon, NAND
+    controller, and eMMC controller base addresses configurable
+  - socionext: uniphier: Change block_addressing flag and the return value type
+    of .is_usb_boot() to bool
+  - socionext: uniphier: Run BL33 at EL2, call uniphier_scp_is_running() only
+    when on-chip STM is supported, define PLAT_XLAT_TABLES_DYNAMIC only for BL2,
+    support read-only xlat tables, use enable_mmu() in common function, shrink
+    UNIPHIER_ROM_REGION_SIZE, prepare uniphier_soc_info() for next SoC, extend
+    boot device detection for future SoCs, make all BL images completely
+    position-independent, make uniphier_mmap_setup() work with PIE, pass SCP
+    base address as a function parameter, set buffer offset and length for
+    io_block dynamically, and use more mmap_add_dynamic_region() for loading
+    images
+  - spd/trusty: Disable error messages seen during boot, allow gic base to be
+    specified with GICD_BASE, and allow getting trusty memsize from
+    BL32_MEM_SIZE instead of TSP_SEC_MEM_SIZE
+  - ti: k3: common: Enable ARM cluster power down and rename device IDs to be
+    more consistent
+  - ti: k3: drivers: ti_sci: Put sequence number in coherent memory and remove
+    indirect structure of const data
+  - xilinx: Move ipi mailbox svc to xilinx common
+  - xilinx: zynqmp: Use GIC framework for warm restart
+  - xilinx: zynqmp: pm: Move custom clock flags to typeflags, remove
+    CLK_TOPSW_LSBUS from invalid clock list and rename FPD WDT clock ID
+  - xilinx: versal: Increase OCM memory size for DEBUG builds and adjust cpu
+    clock, Move versal_def.h and versal_private to include directory
+- Tools
+  - sptool: Updated sptool to accommodate building secure partition packages.
+
+### Resolved Issues
+
+- Arm Architecture
+  - Fix crash dump for lower EL
+- BL-Specific
+  - Bug fix: Protect TSP prints with lock
+  - Fix boot failures on some builds linked with ld.lld.
+- Build System
+  - Fix clang build if CC is not in the path.
+  - Fix 'BL stage' comment for build macros
+- Code Quality
+  - coverity: Fix various MISRA violations including null pointer violations, C
+    issues in BL1/BL2/BL31 and FDT helper functions, using boolean essential,
+    type, and removing unnecessary header file and comparisons to LONG_MAX in
+    debugfs devfip
+  - Based on coding guidelines, replace all `unsigned long` depending on if
+    fixed based on AArch32 or AArch64.
+  - Unify type of "cpu_idx" and Platform specific defines across PSCI module.
+- Drivers
+  - auth: Necessary fix in drivers to upgrade to mbedtls-2.18.0
+  - delay_timer: Fix non-standard frequency issue in udelay
+  - gicv3: Fix compiler dependent behavior
+  - gic600: Fix include ordering according to the coding style and power up
+    sequence
+- Library Code
+  - el3_runtime: Fix stack pointer maintenance on EA handling path, fixup
+    'cm_setup_context' prototype, and adds TPIDR_EL2 register to the context
+    save restore routines
+  - libc: Fix SIZE_MAX on AArch32
+  - locks: T589: Fix insufficient ordering guarantees in bakery lock
+  - pmf: Fix 'tautological-constant-compare' error, Make the runtime
+    instrumentation work on AArch32, and Simplify PMF helper macro definitions
+    across header files
+  - xlat_tables_v2: Fix assembler warning of PLAT_RO_XLAT_TABLES
+- Platforms
+  - allwinner: Fix H6 GPIO and CCU memory map addresses and incorrect ARISC code
+    patch offset check
+  - arm/a5ds: Correct system freq and Cache Writeback Granule, and cleanup
+    enable-method in devicetree
+  - arm/fvp: Fix incorrect GIC mapping, BL31 load address and image size for
+    RESET_TO_BL31=1, topology description of cpus for DynamIQ based FVP, and
+    multithreaded FVP power domain tree
+  - arm/fvp: spm-mm: Correcting instructions to build SPM for FVP
+  - arm/common: Fix ROTPK hash generation for ECDSA encryption, BL2 bug in
+    dynamic configuration initialisation, and current RECLAIM_INIT_CODE behavior
+  - arm/rde1edge: Fix incorrect topology tree description
+  - arm/sgi: Fix the incorrect check for SCMI channel ID
+  - common: Flush dcache when storing timestamp
+  - intel: Fix UEFI decompression issue, memory calibration, SMC SIP service,
+    mailbox config return status, mailbox driver logic, FPGA manager on
+    reconfiguration, and mailbox send_cmd issue
+  - imx: Fix shift-overflow errors, the rdc memory region slot's offset,
+    multiple definition of ipc_handle, missing inclusion of cdefs.h, and correct
+    the SGIs that used for secure interrupt
+  - mediatek: mt8183: Fix AARCH64 init fail on CPU0
+  - rockchip: Fix definition of struct param_ddr_usage
+  - rpi4: Fix documentation of armstub config entry
+  - st: Correct io possible NULL pointer dereference and device_size type, nand
+    xor_ecc.val assigned value, static analysis tool issues, and fix incorrect
+    return value and correctly check pwr-regulators node
+  - xilinx: zynqmp: Correct syscnt freq for QEMU and fix clock models and IDs of
+    GEM-related clocks
+
+### Known Issues
+
+- Build System
+  - dtb: DTB creation not supported when building on a Windows host.
+
+    This step in the build process is skipped when running on a Windows host. A
+    known issue from the 1.6 release.
+
+  - Intermittent assertion firing `ASSERT: services/spd/tspd/tspd_main.c:105`
+- Coverity
+  - Intermittent Race condition in Coverity Jenkins Build Job
+- Platforms
+  - arm/juno: System suspend from Linux does not function as documented in the
+    user guide
+
+    Following the instructions provided in the user guide document does not
+    result in the platform entering system suspend state as expected. A message
+    relating to the hdlcd driver failing to suspend will be emitted on the Linux
+    terminal.
+
+  - mediatek/mt6795: This platform does not build in this release
+
+## 2.2 (2019-10-22)
+
+### New Features
+
+- Architecture
+  - Enable Pointer Authentication (PAuth) support for Secure World
+
+    - Adds support for ARMv8.3-PAuth in BL1 SMC calls and BL2U image for
+      firmware updates.
+
+  - Enable Memory Tagging Extension (MTE) support in both secure and non-secure
+    worlds
+
+    - Adds support for the new Memory Tagging Extension arriving in ARMv8.5. MTE
+      support is now enabled by default on systems that support it at EL0.
+    - To enable it at ELx for both the non-secure and the secure world, the
+      compiler flag `CTX_INCLUDE_MTE_REGS` includes register saving and
+      restoring when necessary in order to prevent information leakage between
+      the worlds.
+
+  - Add support for Branch Target Identification (BTI)
+- Build System
+  - Modify FVP makefile for CPUs that support both AArch64/32
+  - AArch32: Allow compiling with soft-float toolchain
+  - Makefile: Add default warning flags
+  - Add Makefile check for PAuth and AArch64
+  - Add compile-time errors for HW_ASSISTED_COHERENCY flag
+  - Apply compile-time check for AArch64-only CPUs
+  - build_macros: Add mechanism to prevent bin generation.
+  - Add support for default stack-protector flag
+  - spd: opteed: Enable NS_TIMER_SWITCH
+  - plat/arm: Skip BL2U if RESET_TO_SP_MIN flag is set
+  - Add new build option to let each platform select which implementation of
+    spinlocks it wants to use
+- CPU Support
+  - DSU: Workaround for erratum 798953 and 936184
+  - Neoverse N1: Force cacheable atomic to near atomic
+  - Neoverse N1: Workaround for erratum 1073348, 1130799, 1165347, 1207823,
+    1220197, 1257314, 1262606, 1262888, 1275112, 1315703, 1542419
+  - Neoverse Zeus: Apply the MSR SSBS instruction
+  - cortex-Hercules/HerculesAE: Support added for Cortex-Hercules and
+    Cortex-HerculesAE CPUs
+  - cortex-Hercules/HerculesAE: Enable AMU for Cortex-Hercules and
+    Cortex-HerculesAE
+  - cortex-a76AE: Support added for Cortex-A76AE CPU
+  - cortex-a76: Workaround for erratum 1257314, 1262606, 1262888, 1275112,
+    1286807
+  - cortex-a65/a65AE: Support added for Cortex-A65 and Cortex-A65AE CPUs
+  - cortex-a65: Enable AMU for Cortex-A65
+  - cortex-a55: Workaround for erratum 1221012
+  - cortex-a35: Workaround for erratum 855472
+  - cortex-a9: Workaround for erratum 794073
+- Drivers
+  - console: Allow the console to register multiple times
+
+  - delay: Timeout detection support
+
+  - gicv3: Enabled multi-socket GIC redistributor frame discovery and migrated
+    ARM platforms to the new API
+
+    - Adds `gicv3_rdistif_probe` function that delegates the responsibility of
+      discovering the corresponding redistributor base frame to each CPU itself.
+
+  - sbsa: Add SBSA watchdog driver
+
+  - st/stm32_hash: Add HASH driver
+
+  - ti/uart: Add an AArch32 variant
+- Library at ROM (romlib)
+  - Introduce BTI support in Library at ROM (romlib)
+- New Platforms Support
+  - amlogic: g12a: New platform support added for the S905X2 (G12A) platform
+  - amlogic: meson/gxl: New platform support added for Amlogic Meson S905x (GXL)
+  - arm/a5ds: New platform support added for A5 DesignStart
+  - arm/corstone: New platform support added for Corstone-700
+  - intel: New platform support added for Agilex
+  - mediatek: New platform support added for MediaTek mt8183
+  - qemu/qemu_sbsa: New platform support added for QEMU SBSA platform
+  - renesas/rcar_gen3: plat: New platform support added for D3
+  - rockchip: New platform support added for px30
+  - rockchip: New platform support added for rk3288
+  - rpi: New platform support added for Raspberry Pi 4
+- Platforms
+  - arm/common: Introduce wrapper functions to setup secure watchdog
+  - arm/fvp: Add Delay Timer driver to BL1 and BL31 and option for defining
+    platform DRAM2 base
+  - arm/fvp: Add Linux DTS files for 32 bit threaded FVPs
+  - arm/n1sdp: Add code for DDR ECC enablement and BL33 copy to DDR, Initialise
+    CNTFRQ in Non Secure CNTBaseN
+  - arm/juno: Use shared mbedtls heap between BL1 and BL2 and add basic support
+    for dynamic config
+  - imx: Basic support for PicoPi iMX7D, rdc module init, caam module init,
+    aipstz init, IMX_SIP_GET_SOC_INFO, IMX_SIP_BUILDINFO added
+  - intel: Add ncore ccu driver
+  - mediatek/mt81\*: Use new bl31_params_parse() helper
+  - nvidia: tegra: Add support for multi console interface
+  - qemu/qemu_sbsa: Adding memory mapping for both FLASH0/FLASH1
+  - qemu: Added gicv3 support, new console interface in AArch32, and
+    sub-platforms
+  - renesas/rcar_gen3: plat: Add R-Car V3M support, new board revision for
+    H3ULCB, DBSC4 setting before self-refresh mode
+  - socionext/uniphier: Support console based on multi-console
+  - st: stm32mp1: Add OP-TEE, Avenger96, watchdog, LpDDR3, authentication
+    support and general SYSCFG management
+  - ti/k3: common: Add support for J721E, Use coherent memory for shared data,
+    Trap all asynchronous bus errors to EL3
+  - xilinx/zynqmp: Add support for multi console interface, Initialize IPI table
+    from zynqmp_config_setup()
+- PSCI
+  - Adding new optional PSCI hook `pwr_domain_on_finish_late`
+    - This PSCI hook `pwr_domain_on_finish_late` is similar to
+      `pwr_domain_on_finish` but is guaranteed to be invoked when the respective
+      core and cluster are participating in coherency.
+- Security
+  - Speculative Store Bypass Safe (SSBS): Further enhance protection against
+    Spectre variant 4 by disabling speculative loads/stores (SPSR.SSBS bit) by
+    default.
+  - UBSAN support and handlers
+    - Adds support for the Undefined Behaviour sanitizer. There are two types of
+      support offered - minimalistic trapping support which essentially
+      immediately crashes on undefined behaviour and full support with full
+      debug messages.
+- Tools
+  - cert_create: Add support for bigger RSA key sizes (3KB and 4KB), previously
+    the maximum size was 2KB.
+  - fiptool: Add support to build fiptool on Windows.
+
+### Changed
+
+- Architecture
+  - Refactor ARMv8.3 Pointer Authentication support code
+  - backtrace: Strip PAC field when PAUTH is enabled
+  - Prettify crash reporting output on AArch64.
+  - Rework smc_unknown return code path in smc_handler
+    - Leverage the existing `el3_exit()` return routine for smc_unknown return
+      path rather than a custom set of instructions.
+- BL-Specific
+  - Invalidate dcache build option for BL2 entry at EL3
+  - Add missing support for BL2_AT_EL3 in XIP memory
+- Boot Flow
+  - Add helper to parse BL31 parameters (both versions)
+  - Factor out cross-BL API into export headers suitable for 3rd party code
+  - Introduce lightweight BL platform parameter library
+- Drivers
+  - auth: Memory optimization for Chain of Trust (CoT) description
+  - bsec: Move bsec_mode_is_closed_device() service to platform
+  - cryptocell: Move Cryptocell specific API into driver
+  - gicv3: Prevent pending G1S interrupt from becoming G0 interrupt
+  - mbedtls: Remove weak heap implementation
+  - mmc: Increase delay between ACMD41 retries
+  - mmc: stm32_sdmmc2: Correctly manage block size
+  - mmc: stm32_sdmmc2: Manage max-frequency property from DT
+  - synopsys/emmc: Do not change FIFO TH as this breaks some platforms
+  - synopsys: Update synopsys drivers to not rely on undefined overflow
+    behaviour
+  - ufs: Extend the delay after reset to wait for some slower chips
+- Platforms
+  - amlogic/meson/gxl: Remove BL2 dependency from BL31
+  - arm/common: Shorten the Firmware Update (FWU) process
+  - arm/fvp: Remove GIC initialisation from secondary core cold boot
+  - arm/sgm: Temporarily disable shared Mbed TLS heap for SGM
+  - hisilicon: Update hisilicon drivers to not rely on undefined overflow
+    behaviour
+  - imx: imx8: Replace PLAT_IMX8\* with PLAT_imx8\*, remove duplicated linker
+    symbols and deprecated code include, keep only IRQ 32 unmasked, enable all
+    power domain by default
+  - marvell: Prevent SError accessing PCIe link, Switch to xlat_tables_v2, do
+    not rely on argument passed via smc, make sure that comphy init will use
+    correct address
+  - mediatek: mt8173: Refactor RTC and PMIC drivers
+  - mediatek: mt8173: Apply MULTI_CONSOLE framework
+  - nvidia: Tegra: memctrl_v2: fix "overflow before widen" coverity issue
+  - qemu: Simplify the image size calculation, Move and generalise FDT PSCI
+    fixup, move gicv2 codes to separate file
+  - renesas/rcar_gen3: Convert to multi-console API, update QoS setting, Update
+    IPL and Secure Monitor Rev2.0.4, Change to restore timer counter value at
+    resume, Update DDR setting rev.0.35, qos: change subslot cycle, Change
+    periodic write DQ training option.
+  - rockchip: Allow SOCs with undefined wfe check bits, Streamline and complete
+    UARTn_BASE macros, drop rockchip-specific imported linker symbols for bl31,
+    Disable binary generation for all SOCs, Allow console device to be set by
+    DTB, Use new bl31_params_parse functions
+  - rpi/rpi3: Move shared rpi3 files into common directory
+  - socionext/uniphier: Set CONSOLE_FLAG_TRANSLATE_CRLF and clean up console
+    driver
+  - socionext/uniphier: Replace DIV_ROUND_UP() with div_round_up() from
+    utils_def.h
+  - st/stm32mp: Split stm32mp_io_setup function, move
+    stm32_get_gpio_bank_clock() to private file, correctly handle Clock
+    Spreading Generator, move oscillator functions to generic file, realign
+    device tree files with internal devs, enable RTCAPB clock for dual-core
+    chips, use a common function to check spinlock is available, move
+    check_header() to common code
+  - ti/k3: Enable SEPARATE_CODE_AND_RODATA by default, Remove shared RAM space,
+    Drop \_ADDRESS from K3_USART_BASE to match other defines, Remove MSMC port
+    definitions, Allow USE_COHERENT_MEM for K3, Set L2 latency on A72 cores
+- PSCI
+  - PSCI: Lookup list of parent nodes to lock only once
+- Secure Partition Manager (SPM): SPCI Prototype
+  - Fix service UUID lookup
+  - Adjust size of virtual address space per partition
+  - Refactor xlat context creation
+  - Move shim layer to TTBR1_EL1
+  - Ignore empty regions in resource description
+- Security
+  - Refactor SPSR initialisation code
+  - SMMUv3: Abort DMA transactions
+    - For security DMA should be blocked at the SMMU by default unless
+      explicitly enabled for a device. SMMU is disabled after reset with all
+      streams bypassing the SMMU, and abortion of all incoming transactions
+      implements a default deny policy on reset.
+    - Moves `bl1_platform_setup()` function from arm_bl1_setup.c to FVP
+      platforms' fvp_bl1_setup.c and fvp_ve_bl1_setup.c files.
+- Tools
+  - cert_create: Remove RSA PKCS#1 v1.5 support
+
+### Resolved Issues
+
+- Architecture
+  - Fix the CAS spinlock implementation by adding a missing DSB in
+    `spin_unlock()`
+  - AArch64: Fix SCTLR bit definitions
+    - Removes incorrect `SCTLR_V_BIT` definition and adds definitions for
+      ARMv8.3-Pauth `EnIB`, `EnDA` and `EnDB` bits.
+  - Fix restoration of PAuth context
+    - Replace call to `pauth_context_save()` with `pauth_context_restore()` in
+      case of unknown SMC call.
+- BL-Specific Issues
+  - Fix BL31 crash reporting on AArch64 only platforms
+- Build System
+  - Remove several warnings reported with W=2 and W=1
+- Code Quality Issues
+  - SCTLR and ACTLR are 32-bit for AArch32 and 64-bit for AArch64
+  - Unify type of "cpu_idx" across PSCI module.
+  - Assert if power level value greater then PSCI_INVALID_PWR_LVL
+  - Unsigned long should not be used as per coding guidelines
+  - Reduce the number of memory leaks in cert_create
+  - Fix type of cot_desc_ptr
+  - Use explicit-width data types in AAPCS parameter structs
+  - Add python configuration for editorconfig
+  - BL1: Fix type consistency
+  - Enable -Wshift-overflow=2 to check for undefined shift behavior
+  - Updated upstream platforms to not rely on undefined overflow behaviour
+- Coverity Quality Issues
+  - Remove GGC ignore -Warray-bounds
+  - Fix Coverity #261967, Infinite loop
+  - Fix Coverity #343017, Missing unlock
+  - Fix Coverity #343008, Side affect in assertion
+  - Fix Coverity #342970, Uninitialized scalar variable
+- CPU Support
+  - cortex-a12: Fix MIDR mask
+- Drivers
+  - console: Remove Arm console unregister on suspend
+  - gicv3: Fix support for full SPI range
+  - scmi: Fix wrong payload length
+- Library Code
+  - libc: Fix sparse warning for \_\_assert()
+  - libc: Fix memchr implementation
+- Platforms
+  - rpi: rpi3: Fix compilation error when stack protector is enabled
+  - socionext/uniphier: Fix compilation fail for SPM support build config
+  - st/stm32mp1: Fix TZC400 configuration against non-secure DDR
+  - ti/k3: common: Fix RO data area size calculation
+- Security
+  - AArch32: Disable Secure Cycle Counter
+    - Changes the implementation for disabling Secure Cycle Counter. For ARMv8.5
+      the counter gets disabled by setting `SDCR.SCCD` bit on CPU cold/warm
+      boot. For the earlier architectures PMCR register is saved/restored on
+      secure world entry/exit from/to Non-secure state, and cycle counting gets
+      disabled by setting PMCR.DP bit.
+  - AArch64: Disable Secure Cycle Counter
+    - For ARMv8.5 the counter gets disabled by setting `MDCR_El3.SCCD` bit on
+      CPU cold/warm boot. For the earlier architectures PMCR_EL0 register is
+      saved/restored on secure world entry/exit from/to Non-secure state, and
+      cycle counting gets disabled by setting PMCR_EL0.DP bit.
+
+### Deprecations
+
+- Common Code
+  - Remove MULTI_CONSOLE_API flag and references to it
+  - Remove deprecated `plat_crash_console_*`
+  - Remove deprecated interfaces `get_afflvl_shift`, `mpidr_mask_lower_afflvls`,
+    `eret`
+  - AARCH32/AARCH64 macros are now deprecated in favor of `__aarch64__`
+  - `__ASSEMBLY__` macro is now deprecated in favor of `__ASSEMBLER__`
+- Drivers
+  - console: Removed legacy console API
+  - console: Remove deprecated finish_console_register
+  - tzc: Remove deprecated types `tzc_action_t` and `tzc_region_attributes_t`
+- Secure Partition Manager (SPM):
+  - Prototype SPCI-based SPM (services/std_svc/spm) will be replaced with
+    alternative methods of secure partitioning support.
+
+### Known Issues
+
+- Build System Issues
+  - dtb: DTB creation not supported when building on a Windows host.
+
+    This step in the build process is skipped when running on a Windows host. A
+    known issue from the 1.6 release.
+- Platform Issues
+  - arm/juno: System suspend from Linux does not function as documented in the
+    user guide
+
+    Following the instructions provided in the user guide document does not
+    result in the platform entering system suspend state as expected. A message
+    relating to the hdlcd driver failing to suspend will be emitted on the Linux
+    terminal.
+
+  - mediatek/mt6795: This platform does not build in this release
+
+## 2.1 (2019-03-29)
+
+### New Features
+
+- Architecture
+
+  - Support for ARMv8.3 pointer authentication in the normal and secure worlds
+
+    The use of pointer authentication in the normal world is enabled whenever
+    architectural support is available, without the need for additional build
+    flags.
+
+    Use of pointer authentication in the secure world remains an experimental
+    configuration at this time. Using both the `ENABLE_PAUTH` and
+    `CTX_INCLUDE_PAUTH_REGS` build flags, pointer authentication can be enabled
+    in EL3 and S-EL1/0.
+
+    See the {ref}`Firmware Design` document for additional details on the use of
+    pointer authentication.
+
+  - Enable Data Independent Timing (DIT) in EL3, where supported
+
+- Build System
+
+  - Support for BL-specific build flags
+
+  - Support setting compiler target architecture based on `ARM_ARCH_MINOR` build
+    option.
+
+  - New `RECLAIM_INIT_CODE` build flag:
+
+    A significant amount of the code used for the initialization of BL31 is not
+    needed again after boot time. In order to reduce the runtime memory
+    footprint, the memory used for this code can be reclaimed after
+    initialization.
+
+    Certain boot-time functions were marked with the `__init` attribute to
+    enable this reclamation.
+
+- CPU Support
+
+  - cortex-a76: Workaround for erratum 1073348
+  - cortex-a76: Workaround for erratum 1220197
+  - cortex-a76: Workaround for erratum 1130799
+  - cortex-a75: Workaround for erratum 790748
+  - cortex-a75: Workaround for erratum 764081
+  - cortex-a73: Workaround for erratum 852427
+  - cortex-a73: Workaround for erratum 855423
+  - cortex-a57: Workaround for erratum 817169
+  - cortex-a57: Workaround for erratum 814670
+  - cortex-a55: Workaround for erratum 903758
+  - cortex-a55: Workaround for erratum 846532
+  - cortex-a55: Workaround for erratum 798797
+  - cortex-a55: Workaround for erratum 778703
+  - cortex-a55: Workaround for erratum 768277
+  - cortex-a53: Workaround for erratum 819472
+  - cortex-a53: Workaround for erratum 824069
+  - cortex-a53: Workaround for erratum 827319
+  - cortex-a17: Workaround for erratum 852423
+  - cortex-a17: Workaround for erratum 852421
+  - cortex-a15: Workaround for erratum 816470
+  - cortex-a15: Workaround for erratum 827671
+
+- Documentation
+
+  - Exception Handling Framework documentation
+  - Library at ROM (romlib) documentation
+  - RAS framework documentation
+  - Coding Guidelines document
+
+- Drivers
+
+  - ccn: Add API for setting and reading node registers
+
+    - Adds `ccn_read_node_reg` function
+    - Adds `ccn_write_node_reg` function
+
+  - partition: Support MBR partition entries
+
+  - scmi: Add `plat_css_get_scmi_info` function
+
+    Adds a new API `plat_css_get_scmi_info` which lets the platform register a
+    platform-specific instance of `scmi_channel_plat_info_t` and remove the
+    default values
+
+  - tzc380: Add TZC-380 TrustZone Controller driver
+
+  - tzc-dmc620: Add driver to manage the TrustZone Controller within the DMC-620
+    Dynamic Memory Controller
+
+- Library at ROM (romlib)
+
+  - Add platform-specific jump table list
+
+  - Allow patching of romlib functions
+
+    This change allows patching of functions in the romlib. This can be done by
+    adding "patch" at the end of the jump table entry for the function that
+    needs to be patched in the file jmptbl.i.
+
+- Library Code
+
+  - Support non-LPAE-enabled MMU tables in AArch32
+  - mmio: Add `mmio_clrsetbits_16` function
+    - 16-bit variant of `mmio_clrsetbits`
+  - object_pool: Add Object Pool Allocator
+    - Manages object allocation using a fixed-size static array
+    - Adds `pool_alloc` and `pool_alloc_n` functions
+    - Does not provide any functions to free allocated objects (by design)
+  - libc: Added `strlcpy` function
+  - libc: Import `strrchr` function from FreeBSD
+  - xlat_tables: Add support for ARMv8.4-TTST
+  - xlat_tables: Support mapping regions without an explicitly specified VA
+
+- Math
+
+  - Added softudiv macro to support software division
+
+- Memory Partitioning And Monitoring (MPAM)
+
+  - Enabled MPAM EL2 traps (`MPAMHCR_EL2` and `MPAM_EL2`)
+
+- Platforms
+
+  - amlogic: Add support for Meson S905 (GXBB)
+
+  - arm/fvp_ve: Add support for FVP Versatile Express platform
+
+  - arm/n1sdp: Add support for Neoverse N1 System Development platform
+
+  - arm/rde1edge: Add support for Neoverse E1 platform
+
+  - arm/rdn1edge: Add support for Neoverse N1 platform
+
+  - arm: Add support for booting directly to Linux without an intermediate
+    loader (AArch32)
+
+  - arm/juno: Enable new CPU errata workarounds for A53 and A57
+
+  - arm/juno: Add romlib support
+
+    Building a combined BL1 and ROMLIB binary file with the correct page
+    alignment is now supported on the Juno platform. When `USE_ROMLIB` is set
+    for Juno, it generates the combined file `bl1_romlib.bin` which needs to be
+    used instead of bl1.bin.
+
+  - intel/stratix: Add support for Intel Stratix 10 SoC FPGA platform
+
+  - marvell: Add support for Armada-37xx SoC platform
+
+  - nxp: Add support for i.MX8M and i.MX7 Warp7 platforms
+
+  - renesas: Add support for R-Car Gen3 platform
+
+  - xilinx: Add support for Versal ACAP platforms
+
+- Position-Independent Executable (PIE)
+
+  PIE support has initially been added to BL31. The `ENABLE_PIE` build flag is
+  used to enable or disable this functionality as required.
+
+- Secure Partition Manager
+
+  - New SPM implementation based on SPCI Alpha 1 draft specification
+
+    A new version of SPM has been implemented, based on the SPCI (Secure
+    Partition Client Interface) and SPRT (Secure Partition Runtime) draft
+    specifications.
+
+    The new implementation is a prototype that is expected to undergo intensive
+    rework as the specifications change. It has basic support for multiple
+    Secure Partitions and Resource Descriptions.
+
+    The older version of SPM, based on MM (ARM Management Mode Interface
+    Specification), is still present in the codebase. A new build flag, `SPM_MM`
+    has been added to allow selection of the desired implementation. This flag
+    defaults to 1, selecting the MM-based implementation.
+
+- Security
+
+  - Spectre Variant-1 mitigations (`CVE-2017-5753`)
+
+  - Use Speculation Store Bypass Safe (SSBS) functionality where available
+
+    Provides mitigation against `CVE-2018-19440` (Not saving x0 to x3 registers
+    can leak information from one Normal World SMC client to another)
+
+### Changed
+
+- Build System
+
+  - Warning levels are now selectable with `W=<1,2,3>`
+  - Removed unneeded include paths in PLAT_INCLUDES
+  - "Warnings as errors" (Werror) can be disabled using `E=0`
+  - Support totally quiet output with `-s` flag
+  - Support passing options to checkpatch using `CHECKPATCH_OPTS=<opts>`
+  - Invoke host compiler with `HOSTCC / HOSTCCFLAGS` instead of `CC / CFLAGS`
+  - Make device tree pre-processing similar to U-boot/Linux by:
+    - Creating separate `CPPFLAGS` for DT preprocessing so that compiler options
+      specific to it can be accommodated.
+    - Replacing `CPP` with `PP` for DT pre-processing
+
+- CPU Support
+
+  - Errata report function definition is now mandatory for CPU support files
+
+    CPU operation files must now define a `<name>_errata_report` function to
+    print errata status. This is no longer a weak reference.
+
+- Documentation
+
+  - Migrated some content from GitHub wiki to `docs/` directory
+  - Security advisories now have CVE links
+  - Updated copyright guidelines
+
+- Drivers
+
+  - console: The `MULTI_CONSOLE_API` framework has been rewritten in C
+
+  - console: Ported multi-console driver to AArch32
+
+  - gic: Remove 'lowest priority' constants
+
+    Removed `GIC_LOWEST_SEC_PRIORITY` and `GIC_LOWEST_NS_PRIORITY`. Platforms
+    should define these if required, or instead determine the correct priority
+    values at runtime.
+
+  - delay_timer: Check that the Generic Timer extension is present
+
+  - mmc: Increase command reply timeout to 10 milliseconds
+
+  - mmc: Poll eMMC device status to ensure `EXT_CSD` command completion
+
+  - mmc: Correctly check return code from `mmc_fill_device_info`
+
+- External Libraries
+
+  - libfdt: Upgraded from 1.4.2 to 1.4.6-9
+
+  >
+
+  - mbed TLS: Upgraded from 2.12 to 2.16
+
+  >
+
+  This change incorporates fixes for security issues that should be reviewed to
+  determine if they are relevant for software implementations using Trusted
+  Firmware-A. See the [mbed TLS releases] page for details on changes from the
+  2.12 to the 2.16 release.
+
+- Library Code
+
+  - compiler-rt: Updated `lshrdi3.c` and `int_lib.h` with changes from LLVM
+    master branch (r345645)
+  - cpu: Updated macro that checks need for `CVE-2017-5715` mitigation
+  - libc: Made setjmp and longjmp C standard compliant
+  - libc: Allowed overriding the default libc (use `OVERRIDE_LIBC`)
+  - libc: Moved setjmp and longjmp to the `libc/` directory
+
+- Platforms
+
+  - Removed Mbed TLS dependency from plat_bl_common.c
+
+  - arm: Removed unused `ARM_MAP_BL_ROMLIB` macro
+
+  - arm: Removed `ARM_BOARD_OPTIMISE_MEM` feature and build flag
+
+  - arm: Moved several components into `drivers/` directory
+
+    This affects the SDS, SCP, SCPI, MHU and SCMI components
+
+  - arm/juno: Increased maximum BL2 image size to `0xF000`
+
+    This change was required to accommodate a larger `libfdt` library
+
+- SCMI
+
+  - Optimized bakery locks when hardware-assisted coherency is enabled using the
+    `HW_ASSISTED_COHERENCY` build flag
+
+- SDEI
+
+  - Added support for unconditionally resuming secure world execution after {{
+    SDEI }} event processing completes
+
+    {{ SDEI }} interrupts, although targeting EL3, occur on behalf of the
+    non-secure world, and may have higher priority than secure world interrupts.
+    Therefore they might preempt secure execution and yield execution to the
+    non-secure {{ SDEI }} handler. Upon completion of {{ SDEI }} event handling,
+    resume secure execution if it was preempted.
+
+- Translation Tables (XLAT)
+
+  - Dynamically detect need for `Common not Private (TTBRn_ELx.CnP)` bit
+
+    Properly handle the case where `ARMv8.2-TTCNP` is implemented in a CPU that
+    does not implement all mandatory v8.2 features (and so must claim to
+    implement a lower architecture version).
+
+### Resolved Issues
+
+- Architecture
+  - Incorrect check for SSBS feature detection
+  - Unintentional register clobber in AArch32 reset_handler function
+- Build System
+  - Dependency issue during DTB image build
+  - Incorrect variable expansion in Arm platform makefiles
+  - Building on Windows with verbose mode (`V=1`) enabled is broken
+  - AArch32 compilation flags is missing `$(march32-directive)`
+- BL-Specific Issues
+  - bl2: `uintptr_t is not defined` error when `BL2_IN_XIP_MEM` is defined
+  - bl2: Missing prototype warning in `bl2_arch_setup`
+  - bl31: Omission of Global Offset Table (GOT) section
+- Code Quality Issues
+  - Multiple MISRA compliance issues
+  - Potential NULL pointer dereference (Coverity-detected)
+- Drivers
+  - mmc: Local declaration of `scr` variable causes a cache issue when
+    invalidating after the read DMA transfer completes
+  - mmc: `ACMD41` does not send voltage information during initialization,
+    resulting in the command being treated as a query. This prevents the command
+    from initializing the controller.
+  - mmc: When checking device state using `mmc_device_state()` there are no
+    retries attempted in the event of an error
+  - ccn: Incorrect Region ID calculation for RN-I nodes
+  - console: `Fix MULTI_CONSOLE_API` when used as a crash console
+  - partition: Improper NULL checking in gpt.c
+  - partition: Compilation failure in `VERBOSE` mode (`V=1`)
+- Library Code
+  - common: Incorrect check for Address Authentication support
+
+  - xlat: Fix XLAT_V1 / XLAT_V2 incompatibility
+
+    The file `arm_xlat_tables.h` has been renamed to `xlat_tables_compat.h` and
+    has been moved to a common folder. This header can be used to guarantee
+    compatibility, as it includes the correct header based on
+    `XLAT_TABLES_LIB_V2`.
+
+  - xlat: armclang unused-function warning on `xlat_clean_dcache_range`
+
+  - xlat: Invalid `mm_cursor` checks in `mmap_add` and `mmap_add_ctx`
+
+  - sdei: Missing `context.h` header
+- Platforms
+  - common: Missing prototype warning for `plat_log_get_prefix`
+
+  - arm: Insufficient maximum BL33 image size
+
+  - arm: Potential memory corruption during BL2-BL31 transition
+
+    On Arm platforms, the BL2 memory can be overlaid by BL31/BL32. The memory
+    descriptors describing the list of executable images are created in BL2 R/W
+    memory, which could be possibly corrupted later on by BL31/BL32 due to
+    overlay. This patch creates a reserved location in SRAM for these
+    descriptors and are copied over by BL2 before handing over to next BL image.
+
+  - juno: Invalid behaviour when `CSS_USE_SCMI_SDS_DRIVER` is not set
+
+    In `juno_pm.c` the `css_scmi_override_pm_ops` function was used regardless
+    of whether the build flag was set. The original behaviour has been restored
+    in the case where the build flag is not set.
+- Tools
+  - fiptool: Incorrect UUID parsing of blob parameters
+  - doimage: Incorrect object rules in Makefile
+
+### Deprecations
+
+- Common Code
+  - `plat_crash_console_init` function
+  - `plat_crash_console_putc` function
+  - `plat_crash_console_flush` function
+  - `finish_console_register` macro
+- AArch64-specific Code
+  - helpers: `get_afflvl_shift`
+  - helpers: `mpidr_mask_lower_afflvls`
+  - helpers: `eret`
+- Secure Partition Manager (SPM)
+  - Boot-info structure
+
+### Known Issues
+
+- Build System Issues
+  - dtb: DTB creation not supported when building on a Windows host.
+
+    This step in the build process is skipped when running on a Windows host. A
+    known issue from the 1.6 release.
+- Platform Issues
+  - arm/juno: System suspend from Linux does not function as documented in the
+    user guide
+
+    Following the instructions provided in the user guide document does not
+    result in the platform entering system suspend state as expected. A message
+    relating to the hdlcd driver failing to suspend will be emitted on the Linux
+    terminal.
+
+  - arm/juno: The firmware update use-cases do not work with motherboard
+    firmware version \< v1.5.0 (the reset reason is not preserved). The Linaro
+    18.04 release has MB v1.4.9. The MB v1.5.0 is available in Linaro 18.10
+    release.
+
+  - mediatek/mt6795: This platform does not build in this release
+
+## 2.0 (2018-10-02)
+
+### New Features
+
+- Removal of a number of deprecated APIs
+
+  - A new Platform Compatibility Policy document has been created which
+    references a wiki page that maintains a listing of deprecated interfaces and
+    the release after which they will be removed.
+  - All deprecated interfaces except the MULTI_CONSOLE_API have been removed
+    from the code base.
+  - Various Arm and partner platforms have been updated to remove the use of
+    removed APIs in this release.
+  - This release is otherwise unchanged from 1.6 release
+
+### Issues resolved since last release
+
+- No issues known at 1.6 release resolved in 2.0 release
+
+### Known Issues
+
+- DTB creation not supported when building on a Windows host. This step in the
+  build process is skipped when running on a Windows host. Known issue from 1.6
+  version.
+- As a result of removal of deprecated interfaces the Nvidia Tegra, Marvell
+  Armada 8K and MediaTek MT6795 platforms do not build in this release. Also
+  MediaTek MT8173, NXP QorIQ LS1043A, NXP i.MX8QX, NXP i.MX8QMa, Rockchip
+  RK3328, Rockchip RK3368 and Rockchip RK3399 platforms have not been confirmed
+  to be working after the removal of the deprecated interfaces although they do
+  build.
+
+## 1.6 (2018-09-21)
+
+### New Features
+
+- Addressing Speculation Security Vulnerabilities
+
+  - Implement static workaround for CVE-2018-3639 for AArch32 and AArch64
+  - Add support for dynamic mitigation for CVE-2018-3639
+  - Implement dynamic mitigation for CVE-2018-3639 on Cortex-A76
+  - Ensure {{ SDEI }} handler executes with CVE-2018-3639 mitigation enabled
+
+- Introduce RAS handling on AArch64
+
+  - Some RAS extensions are mandatory for Armv8.2 CPUs, with others mandatory
+    for Armv8.4 CPUs however, all extensions are also optional extensions to the
+    base Armv8.0 architecture.
+  - The Armv8 RAS Extensions introduced Standard Error Records which are a set
+    of standard registers to configure RAS node policy and allow RAS Nodes to
+    record and expose error information for error handling agents.
+  - Capabilities are provided to support RAS Node enumeration and iteration
+    along with individual interrupt registrations and fault injections support.
+  - Introduce handlers for Uncontainable errors, Double Faults and EL3 External
+    Aborts
+
+- Enable Memory Partitioning And Monitoring (MPAM) for lower EL's
+
+  - Memory Partitioning And Monitoring is an Armv8.4 feature that enables
+    various memory system components and resources to define partitions.
+    Software running at various ELs can then assign themselves to the desired
+    partition to control their performance aspects.
+  - When ENABLE_MPAM_FOR_LOWER_ELS is set to 1, EL3 allows lower ELs to access
+    their own MPAM registers without trapping to EL3. This patch however,
+    doesn't make use of partitioning in EL3; platform initialisation code should
+    configure and use partitions in EL3 if required.
+
+- Introduce ROM Lib Feature
+
+  - Support combining several libraries into a self-called "romlib" image, that
+    may be shared across images to reduce memory footprint. The romlib image is
+    stored in ROM but is accessed through a jump-table that may be stored in
+    read-write memory, allowing for the library code to be patched.
+
+- Introduce Backtrace Feature
+
+  - This function displays the backtrace, the current EL and security state to
+    allow a post-processing tool to choose the right binary to interpret the
+    dump.
+  - Print backtrace in assert() and panic() to the console.
+
+- Code hygiene changes and alignment with MISRA C-2012 guideline with fixes
+  addressing issues complying to the following rules:
+
+  - MISRA rules 4.9, 5.1, 5.3, 5.7, 8.2-8.5, 8.8, 8.13, 9.3, 10.1, 10.3-10.4,
+    10.8, 11.3, 11.6, 12.1, 14.4, 15.7, 16.1-16.7, 17.7-17.8, 20.7, 20.10,
+    20.12, 21.1, 21.15, 22.7
+  - Clean up the usage of void pointers to access symbols
+  - Increase usage of static qualifier to locally used functions and data
+  - Migrated to use of u_register_t for register read/write to better match
+    AArch32 and AArch64 type sizes
+  - Use int-ll64 for both AArch32 and AArch64 to assist in consistent format
+    strings between architectures
+  - Clean up TF-A libc by removing non arm copyrighted implementations and
+    replacing them with modified FreeBSD and SCC implementations
+
+- Various changes to support Clang linker and assembler
+
+  - The clang assembler/preprocessor is used when Clang is selected. However,
+    the clang linker is not used because it is unable to link TF-A objects due
+    to immaturity of clang linker functionality at this time.
+
+- Refactor support APIs into Libraries
+
+  - Evolve libfdt, mbed TLS library and standard C library sources as proper
+    libraries that TF-A may be linked against.
+
+- CPU Enhancements
+
+  - Add CPU support for Cortex-Ares and Cortex-A76
+  - Add AMU support for Cortex-Ares
+  - Add initial CPU support for Cortex-Deimos
+  - Add initial CPU support for Cortex-Helios
+  - Implement dynamic mitigation for CVE-2018-3639 on Cortex-A76
+  - Implement Cortex-Ares erratum 1043202 workaround
+  - Implement DSU erratum 936184 workaround
+  - Check presence of fix for errata 843419 in Cortex-A53
+  - Check presence of fix for errata 835769 in Cortex-A53
+
+- Translation Tables Enhancements
+
+  - The xlat v2 library has been refactored in order to be reused by different
+    TF components at different EL's including the addition of EL2. Some
+    refactoring to make the code more generic and less specific to TF, in order
+    to reuse the library outside of this project.
+
+- SPM Enhancements
+
+  - General cleanups and refactoring to pave the way to multiple partitions
+    support
+
+- SDEI Enhancements
+
+  - Allow platforms to define explicit events
+  - Determine client EL from NS context's SCR_EL3
+  - Make dispatches synchronous
+  - Introduce jump primitives for BL31
+  - Mask events after CPU wakeup in {{ SDEI }} dispatcher to conform to the
+    specification
+
+- Misc TF-A Core Common Code Enhancements
+
+  - Add support for eXecute In Place (XIP) memory in BL2
+  - Add support for the SMC Calling Convention 2.0
+  - Introduce External Abort handling on AArch64 External Abort routed to EL3
+    was reported as an unhandled exception and caused a panic. This change
+    enables Trusted Firmware-A to handle External Aborts routed to EL3.
+  - Save value of ACTLR_EL1 implementation-defined register in the CPU context
+    structure rather than forcing it to 0.
+  - Introduce ARM_LINUX_KERNEL_AS_BL33 build option, which allows BL31 to
+    directly jump to a Linux kernel. This makes for a quicker and simpler boot
+    flow, which might be useful in some test environments.
+  - Add dynamic configurations for BL31, BL32 and BL33 enabling support for
+    Chain of Trust (COT).
+  - Make TF UUID RFC 4122 compliant
+
+- New Platform Support
+
+  - Arm SGI-575
+  - Arm SGM-775
+  - Allwinner sun50i_64
+  - Allwinner sun50i_h6
+  - NXP QorIQ LS1043A
+  - NXP i.MX8QX
+  - NXP i.MX8QM
+  - NXP i.MX7Solo WaRP7
+  - TI K3
+  - Socionext Synquacer SC2A11
+  - Marvell Armada 8K
+  - STMicroelectronics STM32MP1
+
+- Misc Generic Platform Common Code Enhancements
+
+  - Add MMC framework that supports both eMMC and SD card devices
+
+- Misc Arm Platform Common Code Enhancements
+
+  - Demonstrate PSCI MEM_PROTECT from el3_runtime
+  - Provide RAS support
+  - Migrate AArch64 port to the multi console driver. The old API is deprecated
+    and will eventually be removed.
+  - Move BL31 below BL2 to enable BL2 overlay resulting in changes in the layout
+    of BL images in memory to enable more efficient use of available space.
+  - Add cpp build processing for dtb that allows processing device tree with
+    external includes.
+  - Extend FIP io driver to support multiple FIP devices
+  - Add support for SCMI AP core configuration protocol v1.0
+  - Use SCMI AP core protocol to set the warm boot entrypoint
+  - Add support to Mbed TLS drivers for shared heap among different BL images to
+    help optimise memory usage
+  - Enable non-secure access to UART1 through a build option to support a serial
+    debug port for debugger connection
+
+- Enhancements for Arm Juno Platform
+
+  - Add support for TrustZone Media Protection 1 (TZMP1)
+
+- Enhancements for Arm FVP Platform
+
+  - Dynamic_config: remove the FVP dtb files
+  - Set DYNAMIC_WORKAROUND_CVE_2018_3639=1 on FVP by default
+  - Set the ability to dynamically disable Trusted Boot Board authentication to
+    be off by default with DYN_DISABLE_AUTH
+  - Add librom enhancement support in FVP
+  - Support shared Mbed TLS heap between BL1 and BL2 that allow a reduction in
+    BL2 size for FVP
+
+- Enhancements for Arm SGI/SGM Platform
+
+  - Enable ARM_PLAT_MT flag for SGI-575
+  - Add dts files to enable support for dynamic config
+  - Add RAS support
+  - Support shared Mbed TLS heap for SGI and SGM between BL1 and BL2
+
+- Enhancements for Non Arm Platforms
+
+  - Raspberry Pi Platform
+  - Hikey Platforms
+  - Xilinx Platforms
+  - QEMU Platform
+  - Rockchip rk3399 Platform
+  - TI Platforms
+  - Socionext Platforms
+  - Allwinner Platforms
+  - NXP Platforms
+  - NVIDIA Tegra Platform
+  - Marvell Platforms
+  - STMicroelectronics STM32MP1 Platform
+
+### Issues resolved since last release
+
+- No issues known at 1.5 release resolved in 1.6 release
+
+### Known Issues
+
+- DTB creation not supported when building on a Windows host. This step in the
+  build process is skipped when running on a Windows host. Known issue from 1.5
+  version.
+
+## 1.5 (2018-03-20)
+
+### New features
+
+- Added new firmware support to enable RAS (Reliability, Availability, and
+  Serviceability) functionality.
+
+  - Secure Partition Manager (SPM): A Secure Partition is a software execution
+    environment instantiated in S-EL0 that can be used to implement simple
+    management and security services. The SPM is the firmware component that is
+    responsible for managing a Secure Partition.
+
+  - SDEI dispatcher: Support for interrupt-based {{ SDEI }} events and all
+    interfaces as defined by the {{ SDEI }} specification v1.0, see
+    [SDEI Specification]
+
+  - Exception Handling Framework (EHF): Framework that allows dispatching of EL3
+    interrupts to their registered handlers which are registered based on their
+    priorities. Facilitates firmware-first error handling policy where
+    asynchronous exceptions may be routed to EL3.
+
+    Integrated the TSPD with EHF.
+
+- Updated PSCI support:
+
+  - Implemented PSCI v1.1 optional features `MEM_PROTECT` and `SYSTEM_RESET2`.
+    The supported PSCI version was updated to v1.1.
+
+  - Improved PSCI STAT timestamp collection, including moving accounting for
+    retention states to be inside the locks and fixing handling of wrap-around
+    when calculating residency in AArch32 execution state.
+
+  - Added optional handler for early suspend that executes when suspending to a
+    power-down state and with data caches enabled.
+
+    This may provide a performance improvement on platforms where it is safe to
+    perform some or all of the platform actions from `pwr_domain_suspend` with
+    the data caches enabled.
+
+- Enabled build option, BL2_AT_EL3, for BL2 to allow execution at EL3 without
+  any dependency on TF BL1.
+
+  This allows platforms which already have a non-TF Boot ROM to directly load
+  and execute BL2 and subsequent BL stages without need for BL1. This was not
+  previously possible because BL2 executes at S-EL1 and cannot jump straight to
+  EL3.
+
+- Implemented support for SMCCC v1.1, including `SMCCC_VERSION` and
+  `SMCCC_ARCH_FEATURES`.
+
+  Additionally, added support for `SMCCC_VERSION` in PSCI features to enable
+  discovery of the SMCCC version via PSCI feature call.
+
+- Added Dynamic Configuration framework which enables each of the boot loader
+  stages to be dynamically configured at runtime if required by the platform.
+  The boot loader stage may optionally specify a firmware configuration file
+  and/or hardware configuration file that can then be shared with the next boot
+  loader stage.
+
+  Introduced a new BL handover interface that essentially allows passing of 4
+  arguments between the different BL stages.
+
+  Updated cert_create and fip_tool to support the dynamic configuration files.
+  The COT also updated to support these new files.
+
+- Code hygiene changes and alignment with MISRA guideline:
+
+  - Fix use of undefined macros.
+  - Achieved compliance with Mandatory MISRA coding rules.
+  - Achieved compliance for following Required MISRA rules for the default build
+    configurations on FVP and Juno platforms : 7.3, 8.3, 8.4, 8.5 and 8.8.
+
+- Added support for Armv8.2-A architectural features:
+
+  - Updated translation table set-up to set the CnP (Common not Private) bit for
+    secure page tables so that multiple PEs in the same Inner Shareable domain
+    can use the same translation table entries for a given stage of translation
+    in a particular translation regime.
+  - Extended the supported values of ID_AA64MMFR0_EL1.PARange to include the
+    52-bit Physical Address range.
+  - Added support for the Scalable Vector Extension to allow Normal world
+    software to access SVE functionality but disable access to SVE, SIMD and
+    floating point functionality from the Secure world in order to prevent
+    corruption of the Z-registers.
+
+- Added support for Armv8.4-A architectural feature Activity Monitor Unit (AMU)
+
+  extensions.
+
+  In addition to the v8.4 architectural extension, AMU support on Cortex-A75 was
+  implemented.
+
+- Enhanced OP-TEE support to enable use of pageable OP-TEE image. The Arm
+  standard platforms are updated to load up to 3 images for OP-TEE; header,
+  pager image and paged image.
+
+  The chain of trust is extended to support the additional images.
+
+- Enhancements to the translation table library:
+
+  - Introduced APIs to get and set the memory attributes of a region.
+  - Added support to manage both privilege levels in translation regimes that
+    describe translations for 2 Exception levels, specifically the EL1&0
+    translation regime, and extended the memory map region attributes to include
+    specifying Non-privileged access.
+  - Added support to specify the granularity of the mappings of each region, for
+    instance a 2MB region can be specified to be mapped with 4KB page tables
+    instead of a 2MB block.
+  - Disabled the higher VA range to avoid unpredictable behaviour if there is an
+    attempt to access addresses in the higher VA range.
+  - Added helpers for Device and Normal memory MAIR encodings that align with
+    the Arm Architecture Reference Manual for Armv8-A (Arm DDI0487B.b).
+  - Code hygiene including fixing type length and signedness of constants,
+    refactoring of function to enable the MMU, removing all instances where the
+    virtual address space is hardcoded and added comments that document
+    alignment needed between memory attributes and attributes specified in
+    TCR_ELx.
+
+- Updated GIC support:
+
+  - Introduce new APIs for GICv2 and GICv3 that provide the capability to
+    specify interrupt properties rather than list of interrupt numbers alone.
+    The Arm platforms and other upstream platforms are migrated to use interrupt
+    properties.
+
+  - Added helpers to save / restore the GICv3 context, specifically the
+    Distributor and Redistributor contexts and architectural parts of the ITS
+    power management. The Distributor and Redistributor helpers also support the
+    implementation-defined part of GIC-500 and GIC-600.
+
+    Updated the Arm FVP platform to save / restore the GICv3 context on system
+    suspend / resume as an example of how to use the helpers.
+
+    Introduced a new TZC secured DDR carve-out for use by Arm platforms for
+    storing EL3 runtime data such as the GICv3 register context.
+
+- Added support for Armv7-A architecture via build option ARM_ARCH_MAJOR=7. This
+  includes following features:
+
+  - Updates GICv2 driver to manage GICv1 with security extensions.
+  - Software implementation for 32bit division.
+  - Enabled use of generic timer for platforms that do not set
+    ARM_CORTEX_Ax=yes.
+  - Support for Armv7-A Virtualization extensions \[DDI0406C_C\].
+  - Support for both Armv7-A platforms that only have 32-bit addressing and
+    Armv7-A platforms that support large page addressing.
+  - Included support for following Armv7 CPUs: Cortex-A12, Cortex-A17,
+    Cortex-A7, Cortex-A5, Cortex-A9, Cortex-A15.
+  - Added support in QEMU for Armv7-A/Cortex-A15.
+
+- Enhancements to Firmware Update feature:
+
+  - Updated the FWU documentation to describe the additional images needed for
+    Firmware update, and how they are used for both the Juno platform and the
+    Arm FVP platforms.
+
+- Enhancements to Trusted Board Boot feature:
+
+  - Added support to cert_create tool for RSA PKCS1# v1.5 and SHA384, SHA512 and
+    SHA256.
+  - For Arm platforms added support to use ECDSA keys.
+  - Enhanced the mbed TLS wrapper layer to include support for both RSA and
+    ECDSA to enable runtime selection between RSA and ECDSA keys.
+
+- Added support for secure interrupt handling in AArch32 sp_min, hardcoded to
+  only handle FIQs.
+
+- Added support to allow a platform to load images from multiple boot sources,
+  for example from a second flash drive.
+
+- Added a logging framework that allows platforms to reduce the logging level at
+  runtime and additionally the prefix string can be defined by the platform.
+
+- Further improvements to register initialisation:
+
+  - Control register PMCR_EL0 / PMCR is set to prohibit cycle counting in the
+    secure world. This register is added to the list of registers that are saved
+    and restored during world switch.
+  - When EL3 is running in AArch32 execution state, the Non-secure version of
+    SCTLR is explicitly initialised during the warmboot flow rather than relying
+    on the hardware to set the correct reset values.
+
+- Enhanced support for Arm platforms:
+
+  - Introduced driver for Shared-Data-Structure (SDS) framework which is used
+    for communication between SCP and the AP CPU, replacing Boot-Over_MHU (BOM)
+    protocol.
+
+    The Juno platform is migrated to use SDS with the SCMI support added in v1.3
+    and is set as default.
+
+    The driver can be found in the plat/arm/css/drivers folder.
+
+  - Improved memory usage by only mapping TSP memory region when the TSPD has
+    been included in the build. This reduces the memory footprint and avoids
+    unnecessary memory being mapped.
+
+  - Updated support for multi-threading CPUs for FVP platforms - always check
+    the MT field in MPDIR and access the bit fields accordingly.
+
+  - Support building for platforms that model DynamIQ configuration by
+    implementing all CPUs in a single cluster.
+
+  - Improved nor flash driver, for instance clearing status registers before
+    sending commands. Driver can be found plat/arm/board/common folder.
+
+- Enhancements to QEMU platform:
+
+  - Added support for TBB.
+  - Added support for using OP-TEE pageable image.
+  - Added support for LOAD_IMAGE_V2.
+  - Migrated to use translation table library v2 by default.
+  - Added support for SEPARATE_CODE_AND_RODATA.
+
+- Applied workarounds CVE-2017-5715 on Arm Cortex-A57, -A72, -A73 and -A75, and
+  for Armv7-A CPUs Cortex-A9, -A15 and -A17.
+
+- Applied errata workaround for Arm Cortex-A57: 859972.
+
+- Applied errata workaround for Arm Cortex-A72: 859971.
+
+- Added support for Poplar 96Board platform.
+
+- Added support for Raspberry Pi 3 platform.
+
+- Added Call Frame Information (CFI) assembler directives to the vector entries
+  which enables debuggers to display the backtrace of functions that triggered a
+  synchronous abort.
+
+- Added ability to build dtb.
+
+- Added support for pre-tool (cert_create and fiptool) image processing enabling
+  compression of the image files before processing by cert_create and fiptool.
+
+  This can reduce fip size and may also speed up loading of images. The image
+  verification will also get faster because certificates are generated based on
+  compressed images.
+
+  Imported zlib 1.2.11 to implement gunzip() for data compression.
+
+- Enhancements to fiptool:
+
+  - Enabled the fiptool to be built using Visual Studio.
+  - Added padding bytes at the end of the last image in the fip to be facilitate
+    transfer by DMA.
+
+### Issues resolved since last release
+
+- TF-A can be built with optimisations disabled (-O0).
+- Memory layout updated to enable Trusted Board Boot on Juno platform when
+  running TF-A in AArch32 execution mode (resolving [tf-issue#501]).
+
+### Known Issues
+
+- DTB creation not supported when building on a Windows host. This step in the
+  build process is skipped when running on a Windows host.
+
+## 1.4 (2017-07-07)
+
+### New features
+
+- Enabled support for platforms with hardware assisted coherency.
+
+  A new build option HW_ASSISTED_COHERENCY allows platforms to take advantage of
+  the following optimisations:
+
+  - Skip performing cache maintenance during power-up and power-down.
+  - Use spin-locks instead of bakery locks.
+  - Enable data caches early on warm-booted CPUs.
+
+- Added support for Cortex-A75 and Cortex-A55 processors.
+
+  Both Cortex-A75 and Cortex-A55 processors use the Arm DynamIQ Shared Unit
+  (DSU). The power-down and power-up sequences are therefore mostly managed in
+  hardware, reducing complexity of the software operations.
+
+- Introduced Arm GIC-600 driver.
+
+  Arm GIC-600 IP complies with Arm GICv3 architecture. For FVP platforms, the
+  GIC-600 driver is chosen when FVP_USE_GIC_DRIVER is set to FVP_GIC600.
+
+- Updated GICv3 support:
+
+  - Introduced power management APIs for GICv3 Redistributor. These APIs allow
+    platforms to power down the Redistributor during CPU power on/off. Requires
+    the GICv3 implementations to have power management operations.
+
+    Implemented the power management APIs for FVP.
+
+  - GIC driver data is flushed by the primary CPU so that secondary CPU do not
+    read stale GIC data.
+
+- Added support for Arm System Control and Management Interface v1.0 (SCMI).
+
+  The SCMI driver implements the power domain management and system power
+  management protocol of the SCMI specification (Arm DEN 0056ASCMI) for
+  communicating with any compliant power controller.
+
+  Support is added for the Juno platform. The driver can be found in the
+  plat/arm/css/drivers folder.
+
+- Added support to enable pre-integration of TBB with the Arm TrustZone
+  CryptoCell product, to take advantage of its hardware Root of Trust and crypto
+  acceleration services.
+
+- Enabled Statistical Profiling Extensions for lower ELs.
+
+  The firmware support is limited to the use of SPE in the Non-secure state and
+  accesses to the SPE specific registers from S-EL1 will trap to EL3.
+
+  The SPE are architecturally specified for AArch64 only.
+
+- Code hygiene changes aligned with MISRA guidelines:
+
+  - Fixed signed / unsigned comparison warnings in the translation table
+    library.
+  - Added U(\_x) macro and together with the existing ULL(\_x) macro fixed some
+    of the signed-ness defects flagged by the MISRA scanner.
+
+- Enhancements to Firmware Update feature:
+
+  - The FWU logic now checks for overlapping images to prevent execution of
+    unauthenticated arbitrary code.
+  - Introduced new FWU_SMC_IMAGE_RESET SMC that changes the image loading state
+    machine to go from COPYING, COPIED or AUTHENTICATED states to RESET state.
+    Previously, this was only possible when the authentication of an image
+    failed or when the execution of the image finished.
+  - Fixed integer overflow which addressed TFV-1: Malformed Firmware Update SMC
+    can result in copy of unexpectedly large data into secure memory.
+
+- Introduced support for Arm Compiler 6 and LLVM (clang).
+
+  TF-A can now also be built with the Arm Compiler 6 or the clang compilers. The
+  assembler and linker must be provided by the GNU toolchain.
+
+  Tested with Arm CC 6.7 and clang 3.9.x and 4.0.x.
+
+- Memory footprint improvements:
+
+  - Introduced `tf_snprintf`, a reduced version of `snprintf` which has support
+    for a limited set of formats.
+
+    The mbedtls driver is updated to optionally use `tf_snprintf` instead of
+    `snprintf`.
+
+  - The `assert()` is updated to no longer print the function name, and
+    additional logging options are supported via an optional platform define
+    `PLAT_LOG_LEVEL_ASSERT`, which controls how verbose the assert output is.
+
+- Enhancements to TF-A support when running in AArch32 execution state:
+
+  - Support booting SP_MIN and BL33 in AArch32 execution mode on Juno. Due to
+    hardware limitations, BL1 and BL2 boot in AArch64 state and there is
+    additional trampoline code to warm reset into SP_MIN in AArch32 execution
+    state.
+  - Added support for Arm Cortex-A53/57/72 MPCore processors including the
+    errata workarounds that are already implemented for AArch64 execution state.
+  - For FVP platforms, added AArch32 Trusted Board Boot support, including the
+    Firmware Update feature.
+
+- Introduced Arm SiP service for use by Arm standard platforms.
+
+  - Added new Arm SiP Service SMCs to enable the Non-secure world to read PMF
+    timestamps.
+
+    Added PMF instrumentation points in TF-A in order to quantify the overall
+    time spent in the PSCI software implementation.
+
+  - Added new Arm SiP service SMC to switch execution state.
+
+    This allows the lower exception level to change its execution state from
+    AArch64 to AArch32, or vice verse, via a request to EL3.
+
+- Migrated to use SPDX\[0\] license identifiers to make software license
+  auditing simpler.
+
+  \:::\{note} Files that have been imported by FreeBSD have not been modified.
+  \:::
+
+  \[0\]: <https://spdx.org/>
+
+- Enhancements to the translation table library:
+
+  - Added version 2 of translation table library that allows different
+    translation tables to be modified by using different 'contexts'. Version 1
+    of the translation table library only allows the current EL's translation
+    tables to be modified.
+
+    Version 2 of the translation table also added support for dynamic regions;
+    regions that can be added and removed dynamically whilst the MMU is enabled.
+    Static regions can only be added or removed before the MMU is enabled.
+
+    The dynamic mapping functionality is enabled or disabled when compiling by
+    setting the build option PLAT_XLAT_TABLES_DYNAMIC to 1 or 0. This can be
+    done per-image.
+
+  - Added support for translation regimes with two virtual address spaces such
+    as the one shared by EL1 and EL0.
+
+    The library does not support initializing translation tables for EL0
+    software.
+
+  - Added support to mark the translation tables as non-cacheable using an
+    additional build option `XLAT_TABLE_NC`.
+
+- Added support for GCC stack protection. A new build option
+  ENABLE_STACK_PROTECTOR was introduced that enables compilation of all BL
+  images with one of the GCC -fstack-protector-\* options.
+
+  A new platform function plat_get_stack_protector_canary() was introduced that
+  returns a value used to initialize the canary for stack corruption detection.
+  For increased effectiveness of protection platforms must provide an
+  implementation that returns a random value.
+
+- Enhanced support for Arm platforms:
+
+  - Added support for multi-threading CPUs, indicated by `MT` field in MPDIR. A
+    new build flag `ARM_PLAT_MT` is added, and when enabled, the functions
+    accessing MPIDR assume that the `MT` bit is set for the platform and access
+    the bit fields accordingly.
+
+    Also, a new API `plat_arm_get_cpu_pe_count` is added when `ARM_PLAT_MT` is
+    enabled, returning the Processing Element count within the physical CPU
+    corresponding to `mpidr`.
+
+  - The Arm platforms migrated to use version 2 of the translation tables.
+
+  - Introduced a new Arm platform layer API `plat_arm_psci_override_pm_ops`
+    which allows Arm platforms to modify `plat_arm_psci_pm_ops` and therefore
+    dynamically define PSCI capability.
+
+  - The Arm platforms migrated to use IMAGE_LOAD_V2 by default.
+
+- Enhanced reporting of errata workaround status with the following policy:
+
+  - If an errata workaround is enabled:
+
+    - If it applies (i.e. the CPU is affected by the errata), an INFO message is
+      printed, confirming that the errata workaround has been applied.
+    - If it does not apply, a VERBOSE message is printed, confirming that the
+      errata workaround has been skipped.
+
+  - If an errata workaround is not enabled, but would have applied had it been,
+    a WARN message is printed, alerting that errata workaround is missing.
+
+- Added build options ARM_ARCH_MAJOR and ARM_ARM_MINOR to choose the
+  architecture version to target TF-A.
+
+- Updated the spin lock implementation to use the more efficient CAS (Compare
+  And Swap) instruction when available. This instruction was introduced in
+  Armv8.1-A.
+
+- Applied errata workaround for Arm Cortex-A53: 855873.
+
+- Applied errata workaround for Arm-Cortex-A57: 813419.
+
+- Enabled all A53 and A57 errata workarounds for Juno, both in AArch64 and
+  AArch32 execution states.
+
+- Added support for Socionext UniPhier SoC platform.
+
+- Added support for Hikey960 and Hikey platforms.
+
+- Added support for Rockchip RK3328 platform.
+
+- Added support for NVidia Tegra T186 platform.
+
+- Added support for Designware emmc driver.
+
+- Imported libfdt v1.4.2 that addresses buffer overflow in fdt_offset_ptr().
+
+- Enhanced the CPU operations framework to allow power handlers to be registered
+  on per-level basis. This enables support for future CPUs that have multiple
+  threads which might need powering down individually.
+
+- Updated register initialisation to prevent unexpected behaviour:
+
+  - Debug registers MDCR-EL3/SDCR and MDCR_EL2/HDCR are initialised to avoid
+    unexpected traps into the higher exception levels and disable secure
+    self-hosted debug. Additionally, secure privileged external debug on Juno is
+    disabled by programming the appropriate Juno SoC registers.
+  - EL2 and EL3 configurable controls are initialised to avoid unexpected traps
+    in the higher exception levels.
+  - Essential control registers are fully initialised on EL3 start-up, when
+    initialising the non-secure and secure context structures and when preparing
+    to leave EL3 for a lower EL. This gives better alignment with the Arm ARM
+    which states that software must initialise RES0 and RES1 fields with 0 / 1.
+
+- Enhanced PSCI support:
+
+  - Introduced new platform interfaces that decouple PSCI stat residency
+    calculation from PMF, enabling platforms to use alternative methods of
+    capturing timestamps.
+  - PSCI stat accounting performed for retention/standby states when requested
+    at multiple power levels.
+
+- Simplified fiptool to have a single linked list of image descriptors.
+
+- For the TSP, resolved corruption of pre-empted secure context by aborting any
+  pre-empted SMC during PSCI power management requests.
+
+### Issues resolved since last release
+
+- TF-A can be built with the latest mbed TLS version (v2.4.2). The earlier
+  version 2.3.0 cannot be used due to build warnings that the TF-A build system
+  interprets as errors.
+- TBBR, including the Firmware Update feature is now supported on FVP platforms
+  when running TF-A in AArch32 state.
+- The version of the AEMv8 Base FVP used in this release has resolved the issue
+  of the model executing a reset instead of terminating in response to a
+  shutdown request using the PSCI SYSTEM_OFF API.
+
+### Known Issues
+
+- Building TF-A with compiler optimisations disabled (-O0) fails.
+- Trusted Board Boot currently does not work on Juno when running Trusted
+  Firmware in AArch32 execution state due to error when loading the sp_min to
+  memory because of lack of free space available. See [tf-issue#501] for more
+  details.
+- The errata workaround for A53 errata 843419 is only available from binutils
+  2.26 and is not present in GCC4.9. If this errata is applicable to the
+  platform, please use GCC compiler version of at least 5.0. See [PR#1002] for
+  more details.
+
+## 1.3 (2016-10-13)
+
+### New features
+
+- Added support for running TF-A in AArch32 execution state.
+
+  The PSCI library has been refactored to allow integration with **EL3 Runtime
+  Software**. This is software that is executing at the highest secure privilege
+  which is EL3 in AArch64 or Secure SVC/Monitor mode in AArch32. See
+  \{ref}`PSCI Library Integration guide for Armv8-A AArch32 systems`.
+
+  Included is a minimal AArch32 Secure Payload, **SP-MIN**, that illustrates the
+  usage and integration of the PSCI library with EL3 Runtime Software running in
+  AArch32 state.
+
+  Booting to the BL1/BL2 images as well as booting straight to the Secure
+  Payload is supported.
+
+- Improvements to the initialization framework for the PSCI service and Arm
+  Standard Services in general.
+
+  The PSCI service is now initialized as part of Arm Standard Service
+  initialization. This consolidates the initializations of any Arm Standard
+  Service that may be added in the future.
+
+  A new function `get_arm_std_svc_args()` is introduced to get arguments
+  corresponding to each standard service and must be implemented by the EL3
+  Runtime Software.
+
+  For PSCI, a new versioned structure `psci_lib_args_t` is introduced to
+  initialize the PSCI Library. **Note** this is a compatibility break due to the
+  change in the prototype of `psci_setup()`.
+
+- To support AArch32 builds of BL1 and BL2, implemented a new, alternative
+  firmware image loading mechanism that adds flexibility.
+
+  The current mechanism has a hard-coded set of images and execution order
+  (BL31, BL32, etc). The new mechanism is data-driven by a list of image
+  descriptors provided by the platform code.
+
+  Arm platforms have been updated to support the new loading mechanism.
+
+  The new mechanism is enabled by a build flag (`LOAD_IMAGE_V2`) which is
+  currently off by default for the AArch64 build.
+
+  **Note** `TRUSTED_BOARD_BOOT` is currently not supported when `LOAD_IMAGE_V2`
+  is enabled.
+
+- Updated requirements for making contributions to TF-A.
+
+  Commits now must have a 'Signed-off-by:' field to certify that the
+  contribution has been made under the terms of the
+  {download}`Developer Certificate of Origin <../dco.txt>`.
+
+  A signed CLA is no longer required.
+
+  The {ref}`Contributor's Guide` has been updated to reflect this change.
+
+- Introduced Performance Measurement Framework (PMF) which provides support for
+  capturing, storing, dumping and retrieving time-stamps to measure the
+  execution time of critical paths in the firmware. This relies on defining
+  fixed sample points at key places in the code.
+
+- To support the QEMU platform port, imported libfdt v1.4.1 from
+  <https://git.kernel.org/pub/scm/utils/dtc/dtc.git>
+
+- Updated PSCI support:
+
+  - Added support for PSCI NODE_HW_STATE API for Arm platforms.
+  - New optional platform hook, `pwr_domain_pwr_down_wfi()`, in `plat_psci_ops`
+    to enable platforms to perform platform-specific actions needed to enter
+    powerdown, including the 'wfi' invocation.
+  - PSCI STAT residency and count functions have been added on Arm platforms by
+    using PMF.
+
+- Enhancements to the translation table library:
+
+  - Limited memory mapping support for region overlaps to only allow regions to
+    overlap that are identity mapped or have the same virtual to physical
+    address offset, and overlap completely but must not cover the same area.
+
+    This limitation will enable future enhancements without having to support
+    complex edge cases that may not be necessary.
+
+  - The initial translation lookup level is now inferred from the virtual
+    address space size. Previously, it was hard-coded.
+
+  - Added support for mapping Normal, Inner Non-cacheable, Outer Non-cacheable
+    memory in the translation table library.
+
+    This can be useful to map a non-cacheable memory region, such as a DMA
+    buffer.
+
+  - Introduced the MT_EXECUTE/MT_EXECUTE_NEVER memory mapping attributes to
+    specify the access permissions for instruction execution of a memory region.
+
+- Enabled support to isolate code and read-only data on separate memory pages,
+  allowing independent access control to be applied to each.
+
+- Enabled SCR_EL3.SIF (Secure Instruction Fetch) bit in BL1 and BL31 common
+  architectural setup code, preventing fetching instructions from non-secure
+  memory when in secure state.
+
+- Enhancements to FIP support:
+
+  - Replaced `fip_create` with `fiptool` which provides a more consistent and
+    intuitive interface as well as additional support to remove an image from a
+    FIP file.
+  - Enabled printing the SHA256 digest with info command, allowing quick
+    verification of an image within a FIP without having to extract the image
+    and running sha256sum on it.
+  - Added support for unpacking the contents of an existing FIP file into the
+    working directory.
+  - Aligned command line options for specifying images to use same naming
+    convention as specified by TBBR and already used in cert_create tool.
+
+- Refactored the TZC-400 driver to also support memory controllers that
+  integrate TZC functionality, for example Arm CoreLink DMC-500. Also added
+  DMC-500 specific support.
+
+- Implemented generic delay timer based on the system generic counter and
+  migrated all platforms to use it.
+
+- Enhanced support for Arm platforms:
+
+  - Updated image loading support to make SCP images (SCP_BL2 and SCP_BL2U)
+    optional.
+  - Enhanced topology description support to allow multi-cluster topology
+    definitions.
+  - Added interconnect abstraction layer to help platform ports select the right
+    interconnect driver, CCI or CCN, for the platform.
+  - Added support to allow loading BL31 in the TZC-secured DRAM instead of the
+    default secure SRAM.
+  - Added support to use a System Security Control (SSC) Registers Unit enabling
+    TF-A to be compiled to support multiple Arm platforms and then select one at
+    runtime.
+  - Restricted mapping of Trusted ROM in BL1 to what is actually needed by BL1
+    rather than entire Trusted ROM region.
+  - Flash is now mapped as execute-never by default. This increases security by
+    restricting the executable region to what is strictly needed.
+
+- Applied following erratum workarounds for Cortex-A57: 833471, 826977, 829520,
+  828024 and 826974.
+
+- Added support for Mediatek MT6795 platform.
+
+- Added support for QEMU virtualization Armv8-A target.
+
+- Added support for Rockchip RK3368 and RK3399 platforms.
+
+- Added support for Xilinx Zynq UltraScale+ MPSoC platform.
+
+- Added support for Arm Cortex-A73 MPCore Processor.
+
+- Added support for Arm Cortex-A72 processor.
+
+- Added support for Arm Cortex-A35 processor.
+
+- Added support for Arm Cortex-A32 MPCore Processor.
+
+- Enabled preloaded BL33 alternative boot flow, in which BL2 does not load BL33
+  from non-volatile storage and BL31 hands execution over to a preloaded BL33.
+  The User Guide has been updated with an example of how to use this option with
+  a bootwrapped kernel.
+
+- Added support to build TF-A on a Windows-based host machine.
+
+- Updated Trusted Board Boot prototype implementation:
+
+  - Enabled the ability for a production ROM with TBBR enabled to boot test
+    software before a real ROTPK is deployed (e.g. manufacturing mode). Added
+    support to use ROTPK in certificate without verifying against the platform
+    value when `ROTPK_NOT_DEPLOYED` bit is set.
+  - Added support for non-volatile counter authentication to the Authentication
+    Module to protect against roll-back.
+
+- Updated GICv3 support:
+
+  - Enabled processor power-down and automatic power-on using GICv3.
+  - Enabled G1S or G0 interrupts to be configured independently.
+  - Changed FVP default interrupt driver to be the GICv3-only driver. **Note**
+    the default build of TF-A will not be able to boot Linux kernel with GICv2
+    FDT blob.
+  - Enabled wake-up from CPU_SUSPEND to stand-by by temporarily re-routing
+    interrupts and then restoring after resume.
+
+### Issues resolved since last release
+
+### Known issues
+
+- The version of the AEMv8 Base FVP used in this release resets the model
+  instead of terminating its execution in response to a shutdown request using
+  the PSCI `SYSTEM_OFF` API. This issue will be fixed in a future version of the
+  model.
+- Building TF-A with compiler optimisations disabled (`-O0`) fails.
+- TF-A cannot be built with mbed TLS version v2.3.0 due to build warnings that
+  the TF-A build system interprets as errors.
+- TBBR is not currently supported when running TF-A in AArch32 state.
+
+## 1.2 (2015-12-22)
+
+### New features
+
+- The Trusted Board Boot implementation on Arm platforms now conforms to the
+  mandatory requirements of the TBBR specification.
+
+  In particular, the boot process is now guarded by a Trusted Watchdog, which
+  will reset the system in case of an authentication or loading error. On Arm
+  platforms, a secure instance of Arm SP805 is used as the Trusted Watchdog.
+
+  Also, a firmware update process has been implemented. It enables authenticated
+  firmware to update firmware images from external interfaces to SoC
+  Non-Volatile memories. This feature functions even when the current firmware
+  in the system is corrupt or missing; it therefore may be used as a recovery
+  mode.
+
+- Improvements have been made to the Certificate Generation Tool (`cert_create`)
+  as follows.
+
+  - Added support for the Firmware Update process by extending the Chain of
+    Trust definition in the tool to include the Firmware Update certificate and
+    the required extensions.
+  - Introduced a new API that allows one to specify command line options in the
+    Chain of Trust description. This makes the declaration of the tool's
+    arguments more flexible and easier to extend.
+  - The tool has been reworked to follow a data driven approach, which makes it
+    easier to maintain and extend.
+
+- Extended the FIP tool (`fip_create`) to support the new set of images involved
+  in the Firmware Update process.
+
+- Various memory footprint improvements. In particular:
+
+  - The bakery lock structure for coherent memory has been optimised.
+  - The mbed TLS SHA1 functions are not needed, as SHA256 is used to generate
+    the certificate signature. Therefore, they have been compiled out, reducing
+    the memory footprint of BL1 and BL2 by approximately 6 KB.
+  - On Arm development platforms, each BL stage now individually defines the
+    number of regions that it needs to map in the MMU.
+
+- Added the following new design documents:
+
+  - {ref}`Authentication Framework & Chain of Trust`
+  - {ref}`Firmware Update (FWU)`
+  - {ref}`CPU Reset`
+  - {ref}`PSCI Power Domain Tree Structure`
+
+- Applied the new image terminology to the code base and documentation, as
+  described in the {ref}`Image Terminology` document.
+
+- The build system has been reworked to improve readability and facilitate
+  adding future extensions.
+
+- On Arm standard platforms, BL31 uses the boot console during cold boot but
+  switches to the runtime console for any later logs at runtime. The TSP uses
+  the runtime console for all output.
+
+- Implemented a basic NOR flash driver for Arm platforms. It programs the device
+  using CFI (Common Flash Interface) standard commands.
+
+- Implemented support for booting EL3 payloads on Arm platforms, which reduces
+  the complexity of developing EL3 baremetal code by doing essential baremetal
+  initialization.
+
+- Provided separate drivers for GICv3 and GICv2. These expect the entire
+  software stack to use either GICv2 or GICv3; hybrid GIC software systems are
+  no longer supported and the legacy Arm GIC driver has been deprecated.
+
+- Added support for Juno r1 and r2. A single set of Juno TF-A binaries can run
+  on Juno r0, r1 and r2 boards. Note that this TF-A version depends on a Linaro
+  release that does *not* contain Juno r2 support.
+
+- Added support for MediaTek mt8173 platform.
+
+- Implemented a generic driver for Arm CCN IP.
+
+- Major rework of the PSCI implementation.
+
+  - Added framework to handle composite power states.
+  - Decoupled the notions of affinity instances (which describes the
+    hierarchical arrangement of cores) and of power domain topology, instead of
+    assuming a one-to-one mapping.
+  - Better alignment with version 1.0 of the PSCI specification.
+
+- Added support for the SYSTEM_SUSPEND PSCI API on Arm platforms. When invoked
+  on the last running core on a supported platform, this puts the system into a
+  low power mode with memory retention.
+
+- Unified the reset handling code as much as possible across BL stages. Also
+  introduced some build options to enable optimization of the reset path on
+  platforms that support it.
+
+- Added a simple delay timer API, as well as an SP804 timer driver, which is
+  enabled on FVP.
+
+- Added support for NVidia Tegra T210 and T132 SoCs.
+
+- Reorganised Arm platforms ports to greatly improve code shareability and
+  facilitate the reuse of some of this code by other platforms.
+
+- Added support for Arm Cortex-A72 processor in the CPU specific framework.
+
+- Provided better error handling. Platform ports can now define their own error
+  handling, for example to perform platform specific bookkeeping or post-error
+  actions.
+
+- Implemented a unified driver for Arm Cache Coherent Interconnects used for
+  both CCI-400 & CCI-500 IPs. Arm platforms ports have been migrated to this
+  common driver. The standalone CCI-400 driver has been deprecated.
+
+### Issues resolved since last release
+
+- The Trusted Board Boot implementation has been redesigned to provide greater
+  modularity and scalability. See the
+  \{ref}`Authentication Framework & Chain of Trust` document. All missing
+  mandatory features are now implemented.
+- The FVP and Juno ports may now use the hash of the ROTPK stored in the Trusted
+  Key Storage registers to verify the ROTPK. Alternatively, a development public
+  key hash embedded in the BL1 and BL2 binaries might be used instead. The
+  location of the ROTPK is chosen at build-time using the `ARM_ROTPK_LOCATION`
+  build option.
+- GICv3 is now fully supported and stable.
+
+### Known issues
+
+- The version of the AEMv8 Base FVP used in this release resets the model
+  instead of terminating its execution in response to a shutdown request using
+  the PSCI `SYSTEM_OFF` API. This issue will be fixed in a future version of the
+  model.
+- While this version has low on-chip RAM requirements, there are further RAM
+  usage enhancements that could be made.
+- The upstream documentation could be improved for structural consistency,
+  clarity and completeness. In particular, the design documentation is
+  incomplete for PSCI, the TSP(D) and the Juno platform.
+- Building TF-A with compiler optimisations disabled (`-O0`) fails.
+
+## 1.1 (2015-02-04)
+
+### New features
+
+- A prototype implementation of Trusted Board Boot has been added. Boot loader
+  images are verified by BL1 and BL2 during the cold boot path. BL1 and BL2 use
+  the PolarSSL SSL library to verify certificates and images. The OpenSSL
+  library is used to create the X.509 certificates. Support has been added to
+  `fip_create` tool to package the certificates in a FIP.
+
+- Support for calling CPU and platform specific reset handlers upon entry into
+  BL3-1 during the cold and warm boot paths has been added. This happens after
+  another Boot ROM `reset_handler()` has already run. This enables a developer
+  to perform additional actions or undo actions already performed during the
+  first call of the reset handlers e.g. apply additional errata workarounds.
+
+- Support has been added to demonstrate routing of IRQs to EL3 instead of S-EL1
+  when execution is in secure world.
+
+- The PSCI implementation now conforms to version 1.0 of the PSCI specification.
+  All the mandatory APIs and selected optional APIs are supported. In
+  particular, support for the `PSCI_FEATURES` API has been added. A capability
+  variable is constructed during initialization by examining the `plat_pm_ops`
+  and `spd_pm_ops` exported by the platform and the Secure Payload Dispatcher.
+  This is used by the PSCI FEATURES function to determine which PSCI APIs are
+  supported by the platform.
+
+- Improvements have been made to the PSCI code as follows.
+
+  - The code has been refactored to remove redundant parameters from internal
+    functions.
+  - Changes have been made to the code for PSCI `CPU_SUSPEND`, `CPU_ON` and
+    `CPU_OFF` calls to facilitate an early return to the caller in case a
+    failure condition is detected. For example, a PSCI `CPU_SUSPEND` call
+    returns `SUCCESS` to the caller if a pending interrupt is detected early in
+    the code path.
+  - Optional platform APIs have been added to validate the `power_state` and
+    `entrypoint` parameters early in PSCI `CPU_ON` and `CPU_SUSPEND` code paths.
+  - PSCI migrate APIs have been reworked to invoke the SPD hook to determine the
+    type of Trusted OS and the CPU it is resident on (if applicable). Also,
+    during a PSCI `MIGRATE` call, the SPD hook to migrate the Trusted OS is
+    invoked.
+
+- It is now possible to build TF-A without marking at least an extra page of
+  memory as coherent. The build flag `USE_COHERENT_MEM` can be used to choose
+  between the two implementations. This has been made possible through these
+  changes.
+
+  - An implementation of Bakery locks, where the locks are not allocated in
+    coherent memory has been added.
+  - Memory which was previously marked as coherent is now kept coherent through
+    the use of software cache maintenance operations.
+
+  Approximately, 4K worth of memory is saved for each boot loader stage when
+  `USE_COHERENT_MEM=0`. Enabling this option increases the latencies associated
+  with acquire and release of locks. It also requires changes to the platform
+  ports.
+
+- It is now possible to specify the name of the FIP at build time by defining
+  the `FIP_NAME` variable.
+
+- Issues with dependencies on the 'fiptool' makefile target have been rectified.
+  The `fip_create` tool is now rebuilt whenever its source files change.
+
+- The BL3-1 runtime console is now also used as the crash console. The crash
+  console is changed to SoC UART0 (UART2) from the previous FPGA UART0 (UART0)
+  on Juno. In FVP, it is changed from UART0 to UART1.
+
+- CPU errata workarounds are applied only when the revision and part number
+  match. This behaviour has been made consistent across the debug and release
+  builds. The debug build additionally prints a warning if a mismatch is
+  detected.
+
+- It is now possible to issue cache maintenance operations by set/way for a
+  particular level of data cache. Levels 1-3 are currently supported.
+
+- The following improvements have been made to the FVP port.
+
+  - The build option `FVP_SHARED_DATA_LOCATION` which allowed relocation of
+    shared data into the Trusted DRAM has been deprecated. Shared data is now
+    always located at the base of Trusted SRAM.
+  - BL2 Translation tables have been updated to map only the region of DRAM
+    which is accessible to normal world. This is the region of the 2GB DDR-DRAM
+    memory at 0x80000000 excluding the top 16MB. The top 16MB is accessible to
+    only the secure world.
+  - BL3-2 can now reside in the top 16MB of DRAM which is accessible only to the
+    secure world. This can be done by setting the build flag
+    `FVP_TSP_RAM_LOCATION` to the value `dram`.
+
+- Separate translation tables are created for each boot loader image. The
+  `IMAGE_BLx` build options are used to do this. This allows each stage to
+  create mappings only for areas in the memory map that it needs.
+
+- A Secure Payload Dispatcher (OPTEED) for the OP-TEE Trusted OS has been added.
+  Details of using it with TF-A can be found in {ref}`OP-TEE Dispatcher`
+
+### Issues resolved since last release
+
+- The Juno port has been aligned with the FVP port as follows.
+
+  - Support for reclaiming all BL1 RW memory and BL2 memory by overlaying the
+    BL3-1/BL3-2 NOBITS sections on top of them has been added to the Juno port.
+  - The top 16MB of the 2GB DDR-DRAM memory at 0x80000000 is configured using
+    the TZC-400 controller to be accessible only to the secure world.
+  - The Arm GIC driver is used to configure the GIC-400 instead of using a GIC
+    driver private to the Juno port.
+  - PSCI `CPU_SUSPEND` calls that target a standby state are now supported.
+  - The TZC-400 driver is used to configure the controller instead of direct
+    accesses to the registers.
+
+- The Linux kernel version referred to in the user guide has DVFS and HMP
+  support enabled.
+
+- DS-5 v5.19 did not detect Version 5.8 of the Cortex-A57-A53 Base FVPs in CADI
+  server mode. This issue is not seen with DS-5 v5.20 and Version 6.2 of the
+  Cortex-A57-A53 Base FVPs.
+
+### Known issues
+
+- The Trusted Board Boot implementation is a prototype. There are issues with
+  the modularity and scalability of the design. Support for a Trusted Watchdog,
+  firmware update mechanism, recovery images and Trusted debug is absent. These
+  issues will be addressed in future releases.
+- The FVP and Juno ports do not use the hash of the ROTPK stored in the Trusted
+  Key Storage registers to verify the ROTPK in the `plat_match_rotpk()`
+  function. This prevents the correct establishment of the Chain of Trust at the
+  first step in the Trusted Board Boot process.
+- The version of the AEMv8 Base FVP used in this release resets the model
+  instead of terminating its execution in response to a shutdown request using
+  the PSCI `SYSTEM_OFF` API. This issue will be fixed in a future version of the
+  model.
+- GICv3 support is experimental. There are known issues with GICv3
+  initialization in the TF-A.
+- While this version greatly reduces the on-chip RAM requirements, there are
+  further RAM usage enhancements that could be made.
+- The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
+  its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
+- The Juno-specific firmware design documentation is incomplete.
+
+## 1.0 (2014-08-28)
+
+### New features
+
+- It is now possible to map higher physical addresses using non-flat virtual to
+  physical address mappings in the MMU setup.
+
+- Wider use is now made of the per-CPU data cache in BL3-1 to store:
+
+  - Pointers to the non-secure and secure security state contexts.
+  - A pointer to the CPU-specific operations.
+  - A pointer to PSCI specific information (for example the current power
+    state).
+  - A crash reporting buffer.
+
+- The following RAM usage improvements result in a BL3-1 RAM usage reduction
+  from 96KB to 56KB (for FVP with TSPD), and a total RAM usage reduction across
+  all images from 208KB to 88KB, compared to the previous release.
+
+  - Removed the separate `early_exception` vectors from BL3-1 (2KB code size
+    saving).
+  - Removed NSRAM from the FVP memory map, allowing the removal of one (4KB)
+    translation table.
+  - Eliminated the internal `psci_suspend_context` array, saving 2KB.
+  - Correctly dimensioned the PSCI `aff_map_node` array, saving 1.5KB in the FVP
+    port.
+  - Removed calling CPU mpidr from the bakery lock API, saving 160 bytes.
+  - Removed current CPU mpidr from PSCI common code, saving 160 bytes.
+  - Inlined the mmio accessor functions, saving 360 bytes.
+  - Fully reclaimed all BL1 RW memory and BL2 memory on the FVP port by
+    overlaying the BL3-1/BL3-2 NOBITS sections on top of these at runtime.
+  - Made storing the FP register context optional, saving 0.5KB per context (8KB
+    on the FVP port, with TSPD enabled and running on 8 CPUs).
+  - Implemented a leaner `tf_printf()` function, allowing the stack to be
+    greatly reduced.
+  - Removed coherent stacks from the codebase. Stacks allocated in normal memory
+    are now used before and after the MMU is enabled. This saves 768 bytes per
+    CPU in BL3-1.
+  - Reworked the crash reporting in BL3-1 to use less stack.
+  - Optimized the EL3 register state stored in the `cpu_context` structure so
+    that registers that do not change during normal execution are re-initialized
+    each time during cold/warm boot, rather than restored from memory. This
+    saves about 1.2KB.
+  - As a result of some of the above, reduced the runtime stack size in all BL
+    images. For BL3-1, this saves 1KB per CPU.
+
+- PSCI SMC handler improvements to correctly handle calls from secure states and
+  from AArch32.
+
+- CPU contexts are now initialized from the `entry_point_info`. BL3-1 fully
+  determines the exception level to use for the non-trusted firmware (BL3-3)
+  based on the SPSR value provided by the BL2 platform code (or otherwise
+  provided to BL3-1). This allows platform code to directly run non-trusted
+  firmware payloads at either EL2 or EL1 without requiring an EL2 stub or OS
+  loader.
+
+- Code refactoring improvements:
+
+  - Refactored `fvp_config` into a common platform header.
+  - Refactored the fvp gic code to be a generic driver that no longer has an
+    explicit dependency on platform code.
+  - Refactored the CCI-400 driver to not have dependency on platform code.
+  - Simplified the IO driver so it's no longer necessary to call `io_init()` and
+    moved all the IO storage framework code to one place.
+  - Simplified the interface the the TZC-400 driver.
+  - Clarified the platform porting interface to the TSP.
+  - Reworked the TSPD setup code to support the alternate BL3-2 initialization
+    flow where BL3-1 generic code hands control to BL3-2, rather than expecting
+    the TSPD to hand control directly to BL3-2.
+  - Considerable rework to PSCI generic code to support CPU specific operations.
+
+- Improved console log output, by:
+
+  - Adding the concept of debug log levels.
+  - Rationalizing the existing debug messages and adding new ones.
+  - Printing out the version of each BL stage at runtime.
+  - Adding support for printing console output from assembler code, including
+    when a crash occurs before the C runtime is initialized.
+
+- Moved up to the latest versions of the FVPs, toolchain, EDK2, kernel, Linaro
+  file system and DS-5.
+
+- On the FVP port, made the use of the Trusted DRAM region optional at build
+  time (off by default). Normal platforms will not have such a "ready-to-use"
+  DRAM area so it is not a good example to use it.
+
+- Added support for PSCI `SYSTEM_OFF` and `SYSTEM_RESET` APIs.
+
+- Added support for CPU specific reset sequences, power down sequences and
+  register dumping during crash reporting. The CPU specific reset sequences
+  include support for errata workarounds.
+
+- Merged the Juno port into the master branch. Added support for CPU hotplug and
+  CPU idle. Updated the user guide to describe how to build and run on the Juno
+  platform.
+
+### Issues resolved since last release
+
+- Removed the concept of top/bottom image loading. The image loader now
+  automatically detects the position of the image inside the current memory
+  layout and updates the layout to minimize fragmentation. This resolves the
+  image loader limitations of previously releases. There are currently no plans
+  to support dynamic image loading.
+- CPU idle now works on the publicized version of the Foundation FVP.
+- All known issues relating to the compiler version used have now been resolved.
+  This TF-A version uses Linaro toolchain 14.07 (based on GCC 4.9).
+
+### Known issues
+
+- GICv3 support is experimental. The Linux kernel patches to support this are
+  not widely available. There are known issues with GICv3 initialization in the
+  TF-A.
+
+- While this version greatly reduces the on-chip RAM requirements, there are
+  further RAM usage enhancements that could be made.
+
+- The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
+  its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
+
+- The Juno-specific firmware design documentation is incomplete.
+
+- Some recent enhancements to the FVP port have not yet been translated into the
+  Juno port. These will be tracked via the tf-issues project.
+
+- The Linux kernel version referred to in the user guide has DVFS and HMP
+  support disabled due to some known instabilities at the time of this release.
+  A future kernel version will re-enable these features.
+
+- DS-5 v5.19 does not detect Version 5.8 of the Cortex-A57-A53 Base FVPs in CADI
+  server mode. This is because the `<SimName>` reported by the FVP in this
+  version has changed. For example, for the Cortex-A57x4-A53x4 Base FVP, the
+  `<SimName>` reported by the FVP is `FVP_Base_Cortex_A57x4_A53x4`, while DS-5
+  expects it to be `FVP_Base_A57x4_A53x4`.
+
+  The temporary fix to this problem is to change the name of the FVP in
+  `sw/debugger/configdb/Boards/ARM FVP/Base_A57x4_A53x4/cadi_config.xml`. Change
+  the following line:
+
+  ```
+  <SimName>System Generator:FVP_Base_A57x4_A53x4</SimName>
+  ```
+
+  to System Generator:FVP_Base_Cortex-A57x4_A53x4
+
+  A similar change can be made to the other Cortex-A57-A53 Base FVP variants.
+
+## 0.4 (2014-06-03)
+
+### New features
+
+- Makefile improvements:
+
+  - Improved dependency checking when building.
+  - Removed `dump` target (build now always produces dump files).
+  - Enabled platform ports to optionally make use of parts of the Trusted
+    Firmware (e.g. BL3-1 only), rather than being forced to use all parts. Also
+    made the `fip` target optional.
+  - Specified the full path to source files and removed use of the `vpath`
+    keyword.
+
+- Provided translation table library code for potential re-use by platforms
+  other than the FVPs.
+
+- Moved architectural timer setup to platform-specific code.
+
+- Added standby state support to PSCI cpu_suspend implementation.
+
+- SRAM usage improvements:
+
+  - Started using the `-ffunction-sections`, `-fdata-sections` and
+    `--gc-sections` compiler/linker options to remove unused code and data from
+    the images. Previously, all common functions were being built into all
+    binary images, whether or not they were actually used.
+  - Placed all assembler functions in their own section to allow more unused
+    functions to be removed from images.
+  - Updated BL1 and BL2 to use a single coherent stack each, rather than one per
+    CPU.
+  - Changed variables that were unnecessarily declared and initialized as
+    non-const (i.e. in the .data section) so they are either uninitialized (zero
+    init) or const.
+
+- Moved the Test Secure-EL1 Payload (BL3-2) to execute in Trusted SRAM by
+  default. The option for it to run in Trusted DRAM remains.
+
+- Implemented a TrustZone Address Space Controller (TZC-400) driver. A default
+  configuration is provided for the Base FVPs. This means the model parameter
+  `-C bp.secure_memory=1` is now supported.
+
+- Started saving the PSCI cpu_suspend 'power_state' parameter prior to
+  suspending a CPU. This allows platforms that implement multiple power-down
+  states at the same affinity level to identify a specific state.
+
+- Refactored the entire codebase to reduce the amount of nesting in header files
+  and to make the use of system/user includes more consistent. Also split
+  platform.h to separate out the platform porting declarations from the required
+  platform porting definitions and the definitions/declarations specific to the
+  platform port.
+
+- Optimized the data cache clean/invalidate operations.
+
+- Improved the BL3-1 unhandled exception handling and reporting. Unhandled
+  exceptions now result in a dump of registers to the console.
+
+- Major rework to the handover interface between BL stages, in particular the
+  interface to BL3-1. The interface now conforms to a specification and is more
+  future proof.
+
+- Added support for optionally making the BL3-1 entrypoint a reset handler
+  (instead of BL1). This allows platforms with an alternative image loading
+  architecture to re-use BL3-1 with fewer modifications to generic code.
+
+- Reserved some DDR DRAM for secure use on FVP platforms to avoid future
+  compatibility problems with non-secure software.
+
+- Added support for secure interrupts targeting the Secure-EL1 Payload (SP)
+  (using GICv2 routing only). Demonstrated this working by adding an interrupt
+  target and supporting test code to the TSP. Also demonstrated non-secure
+  interrupt handling during TSP processing.
+
+### Issues resolved since last release
+
+- Now support use of the model parameter `-C bp.secure_memory=1` in the Base
+  FVPs (see **New features**).
+- Support for secure world interrupt handling now available (see **New
+  features**).
+- Made enough SRAM savings (see **New features**) to enable the Test Secure-EL1
+  Payload (BL3-2) to execute in Trusted SRAM by default.
+- The tested filesystem used for this release (Linaro AArch64 OpenEmbedded
+  14.04) now correctly reports progress in the console.
+- Improved the Makefile structure to make it easier to separate out parts of the
+  TF-A for re-use in platform ports. Also, improved target dependency checking.
+
+### Known issues
+
+- GICv3 support is experimental. The Linux kernel patches to support this are
+  not widely available. There are known issues with GICv3 initialization in the
+  TF-A.
+- Dynamic image loading is not available yet. The current image loader
+  implementation (used to load BL2 and all subsequent images) has some
+  limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead to
+  loading errors, even if the images should theoretically fit in memory.
+- TF-A still uses too much on-chip Trusted SRAM. A number of RAM usage
+  enhancements have been identified to rectify this situation.
+- CPU idle does not work on the advertised version of the Foundation FVP. Some
+  FVP fixes are required that are not available externally at the time of
+  writing. This can be worked around by disabling CPU idle in the Linux kernel.
+- Various bugs in TF-A, UEFI and the Linux kernel have been observed when using
+  Linaro toolchain versions later than 13.11. Although most of these have been
+  fixed, some remain at the time of writing. These mainly seem to relate to a
+  subtle change in the way the compiler converts between 64-bit and 32-bit
+  values (e.g. during casting operations), which reveals previously hidden bugs
+  in client code.
+- The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
+  its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
+
+## 0.3 (2014-02-28)
+
+### New features
+
+- Support for Foundation FVP Version 2.0 added. The documented UEFI
+  configuration disables some devices that are unavailable in the Foundation
+  FVP, including MMC and CLCD. The resultant UEFI binary can be used on the
+  AEMv8 and Cortex-A57-A53 Base FVPs, as well as the Foundation FVP.
+
+  \:::\{note} The software will not work on Version 1.0 of the Foundation FVP.
+  \:::
+
+- Enabled third party contributions. Added a new contributing.md containing
+  instructions for how to contribute and updated copyright text in all files to
+  acknowledge contributors.
+
+- The PSCI CPU_SUSPEND API has been stabilised to the extent where it can be
+  used for entry into power down states with the following restrictions:
+
+  - Entry into standby states is not supported.
+  - The API is only supported on the AEMv8 and Cortex-A57-A53 Base FVPs.
+
+- The PSCI AFFINITY_INFO api has undergone limited testing on the Base FVPs to
+  allow experimental use.
+
+- Required C library and runtime header files are now included locally in TF-A
+  instead of depending on the toolchain standard include paths. The local
+  implementation has been cleaned up and reduced in scope.
+
+- Added I/O abstraction framework, primarily to allow generic code to load
+  images in a platform-independent way. The existing image loading code has been
+  reworked to use the new framework. Semi-hosting and NOR flash I/O drivers are
+  provided.
+
+- Introduced Firmware Image Package (FIP) handling code and tools. A FIP
+  combines multiple firmware images with a Table of Contents (ToC) into a single
+  binary image. The new FIP driver is another type of I/O driver. The Makefile
+  builds a FIP by default and the FVP platform code expect to load a FIP from
+  NOR flash, although some support for image loading using semi- hosting is
+  retained.
+
+  \:::\{note} Building a FIP by default is a non-backwards-compatible change. :::
+
+  \:::\{note} Generic BL2 code now loads a BL3-3 (non-trusted firmware) image
+  into DRAM instead of expecting this to be pre-loaded at known location. This
+  is also a non-backwards-compatible change. :::
+
+  \:::\{note} Some non-trusted firmware (e.g. UEFI) will need to be rebuilt so
+  that it knows the new location to execute from and no longer needs to copy
+  particular code modules to DRAM itself. :::
+
+- Reworked BL2 to BL3-1 handover interface. A new composite structure
+  (bl31_args) holds the superset of information that needs to be passed from BL2
+  to BL3-1, including information on how handover execution control to BL3-2 (if
+  present) and BL3-3 (non-trusted firmware).
+
+- Added library support for CPU context management, allowing the saving and
+  restoring of
+
+  - Shared system registers between Secure-EL1 and EL1.
+  - VFP registers.
+  - Essential EL3 system registers.
+
+- Added a framework for implementing EL3 runtime services. Reworked the PSCI
+  implementation to be one such runtime service.
+
+- Reworked the exception handling logic, making use of both SP_EL0 and SP_EL3
+  stack pointers for determining the type of exception, managing general purpose
+  and system register context on exception entry/exit, and handling SMCs. SMCs
+  are directed to the correct EL3 runtime service.
+
+- Added support for a Test Secure-EL1 Payload (TSP) and a corresponding
+  Dispatcher (TSPD), which is loaded as an EL3 runtime service. The TSPD
+  implements Secure Monitor functionality such as world switching and EL1
+  context management, and is responsible for communication with the TSP.
+
+  \:::\{note} The TSPD does not yet contain support for secure world interrupts.
+  \:::
+
+  \:::\{note} The TSP/TSPD is not built by default. :::
+
+### Issues resolved since last release
+
+- Support has been added for switching context between secure and normal worlds
+  in EL3.
+- PSCI API calls `AFFINITY_INFO` & `PSCI_VERSION` have now been tested (to a
+  limited extent).
+- The TF-A build artifacts are now placed in the `./build` directory and
+  sub-directories instead of being placed in the root of the project.
+- TF-A is now free from build warnings. Build warnings are now treated as
+  errors.
+- TF-A now provides C library support locally within the project to maintain
+  compatibility between toolchains/systems.
+- The PSCI locking code has been reworked so it no longer takes locks in an
+  incorrect sequence.
+- The RAM-disk method of loading a Linux file-system has been confirmed to work
+  with the TF-A and Linux kernel version (based on version 3.13) used in this
+  release, for both Foundation and Base FVPs.
+
+### Known issues
+
+The following is a list of issues which are expected to be fixed in the future
+releases of TF-A.
+
+- The TrustZone Address Space Controller (TZC-400) is not being programmed yet.
+  Use of model parameter `-C bp.secure_memory=1` is not supported.
+- No support yet for secure world interrupt handling.
+- GICv3 support is experimental. The Linux kernel patches to support this are
+  not widely available. There are known issues with GICv3 initialization in
+  TF-A.
+- Dynamic image loading is not available yet. The current image loader
+  implementation (used to load BL2 and all subsequent images) has some
+  limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead to
+  loading errors, even if the images should theoretically fit in memory.
+- TF-A uses too much on-chip Trusted SRAM. Currently the Test Secure-EL1 Payload
+  (BL3-2) executes in Trusted DRAM since there is not enough SRAM. A number of
+  RAM usage enhancements have been identified to rectify this situation.
+- CPU idle does not work on the advertised version of the Foundation FVP. Some
+  FVP fixes are required that are not available externally at the time of
+  writing.
+- Various bugs in TF-A, UEFI and the Linux kernel have been observed when using
+  Linaro toolchain versions later than 13.11. Although most of these have been
+  fixed, some remain at the time of writing. These mainly seem to relate to a
+  subtle change in the way the compiler converts between 64-bit and 32-bit
+  values (e.g. during casting operations), which reveals previously hidden bugs
+  in client code.
+- The tested filesystem used for this release (Linaro AArch64 OpenEmbedded
+  14.01) does not report progress correctly in the console. It only seems to
+  produce error output, not standard output. It otherwise appears to function
+  correctly. Other filesystem versions on the same software stack do not exhibit
+  the problem.
+- The Makefile structure doesn't make it easy to separate out parts of the TF-A
+  for re-use in platform ports, for example if only BL3-1 is required in a
+  platform port. Also, dependency checking in the Makefile is flawed.
+- The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
+  its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
+
+## 0.2 (2013-10-25)
+
+### New features
+
+- First source release.
+- Code for the PSCI suspend feature is supplied, although this is not enabled by
+  default since there are known issues (see below).
+
+### Issues resolved since last release
+
+- The "psci" nodes in the FDTs provided in this release now fully comply with
+  the recommendations made in the PSCI specification.
+
+### Known issues
+
+The following is a list of issues which are expected to be fixed in the future
+releases of TF-A.
+
+- The TrustZone Address Space Controller (TZC-400) is not being programmed yet.
+  Use of model parameter `-C bp.secure_memory=1` is not supported.
+- No support yet for secure world interrupt handling or for switching context
+  between secure and normal worlds in EL3.
+- GICv3 support is experimental. The Linux kernel patches to support this are
+  not widely available. There are known issues with GICv3 initialization in
+  TF-A.
+- Dynamic image loading is not available yet. The current image loader
+  implementation (used to load BL2 and all subsequent images) has some
+  limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead to
+  loading errors, even if the images should theoretically fit in memory.
+- Although support for PSCI `CPU_SUSPEND` is present, it is not yet stable and
+  ready for use.
+- PSCI API calls `AFFINITY_INFO` & `PSCI_VERSION` are implemented but have not
+  been tested.
+- The TF-A make files result in all build artifacts being placed in the root of
+  the project. These should be placed in appropriate sub-directories.
+- The compilation of TF-A is not free from compilation warnings. Some of these
+  warnings have not been investigated yet so they could mask real bugs.
+- TF-A currently uses toolchain/system include files like stdio.h. It should
+  provide versions of these within the project to maintain compatibility between
+  toolchains/systems.
+- The PSCI code takes some locks in an incorrect sequence. This may cause
+  problems with suspend and hotplug in certain conditions.
+- The Linux kernel used in this release is based on version 3.12-rc4. Using this
+  kernel with the TF-A fails to start the file-system as a RAM-disk. It fails to
+  execute user-space `init` from the RAM-disk. As an alternative, the
+  VirtioBlock mechanism can be used to provide a file-system to the kernel.
+
+______________________________________________________________________
+
+*Copyright (c) 2013-2020, Arm Limited and Contributors. All rights reserved.*
+
+[mbed tls releases]: https://tls.mbed.org/tech-updates/releases
+[pr#1002]: https://github.com/ARM-software/arm-trusted-firmware/pull/1002#issuecomment-312650193
+[sdei specification]: http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf
+[tf-issue#501]: https://github.com/ARM-software/tf-issues/issues/501
diff --git a/docs/change-log.rst b/docs/change-log.rst
deleted file mode 100644
index 9c47568..0000000
--- a/docs/change-log.rst
+++ /dev/null
@@ -1,4602 +0,0 @@
-Change Log & Release Notes
-==========================
-
-This document contains a summary of the new features, changes, fixes and known
-issues in each release of Trusted Firmware-A.
-
-Version 2.5
------------
-
-New Features
-^^^^^^^^^^^^
-
-- Architecture support
-    - Added support for speculation barrier(``FEAT_SB``) for non-Armv8.5
-      platforms starting from Armv8.0
-    - Added support for Activity Monitors Extension version 1.1(``FEAT_AMUv1p1``)
-    - Added helper functions for Random number generator(``FEAT_RNG``) registers
-    - Added support for Armv8.6 Multi-threaded PMU extensions (``FEAT_MTPMU``)
-    - Added support for MTE Asymmetric Fault Handling extensions(``FEAT_MTE3``)
-    - Added support for Privileged Access Never extensions(``FEAT_PANx``)
-
-- Bootloader images
-    - Added PIE support for AArch32 builds
-    - Enable Trusted Random Number Generator service for BL32(sp_min)
-
-- Build System
-    - Added build option for Arm Feature Modifiers
-
-- Drivers
-    - Added support for interrupts in TZC-400 driver
-
-    - Broadcom
-        - Added support for I2C, MDIO and USB drivers
-
-    - Marvell
-        - Added support for secure read/write of dfc register-set
-        - Added support for thermal sensor driver
-        - Implement a3700_core_getc API in console driver
-        - Added rx training on 10G port
-
-    - Marvell Mochi
-        - Added support for cn913x in PCIe mode
-
-    - Marvell Armada A8K
-        - Added support for TRNG-IP-76 driver and accessing RNG register
-
-    - Mediatek MT8192
-        - Added support for following drivers
-            - MPU configuration for SCP/PCIe
-            - SPM suspend
-            - Vcore DVFS
-            - LPM
-            - PTP3
-            - UART save and restore
-            - Power-off
-            - PMIC
-            - CPU hotplug and MCDI support
-            - SPMC
-            - MPU
-
-    - Mediatek MT8195
-        - Added support for following drivers
-            - GPIO, NCDI, SPMC drivers
-            - Power-off
-            - CPU hotplug, reboot and MCDI
-            - Delay timer and sys timer
-            - GIC
-
-    - NXP
-        - Added support for
-            - non-volatile storage API
-            - chain of trust and trusted board boot using two modes: MBEDTLS and CSF
-            - fip-handler necessary for DDR initialization
-            - SMMU and console drivers
-            - crypto hardware accelerator driver
-            - following drivers: SD, EMMC, QSPI, FLEXSPI, GPIO, GIC, CSU, PMU, DDR
-            - NXP Security Monitor and SFP driver
-            - interconnect config APIs using ARM CCN-CCI driver
-            - TZC APIs to configure DDR region
-            - generic timer driver
-            - Device configuration driver
-
-    - IMX
-        - Added support for image loading and io-storage driver for TBBR fip booting
-
-    - Renesas
-        - Added support for PFC and EMMC driver
-
-        - RZ Family:
-            - G2N, G2E and G2H SoCs
-                - Added support for watchdog, QoS, PFC and DRAM initialization
-
-        - RZG Family:
-            - G2M
-                - Added support for QoS and DRAM initialization
-
-    - Xilinx
-        - Added JTAG DCC support for Versal and ZynqMP SoC family.
-
-- Libraries
-    - C standard library
-        - Added support to print ``%`` in ``snprintf()`` and ``printf()`` APIs
-        - Added support for strtoull, strtoll, strtoul, strtol APIs from FreeBSD project
-
-    - CPU support
-        - Added support for
-            - Cortex_A78C CPU
-            - Makalu ELP CPU
-            - Makalu CPU
-            - Matterhorn ELP CPU
-            - Neoverse-N2 CPU
-
-    - CPU Errata
-        - Arm Cortex-A76: Added workaround for erratum 1946160
-
-        - Arm Cortex-A77: Added workaround for erratum 1946167
-
-        - Arm Cortex-A78: Added workaround for erratum 1941498 and 1951500
-
-        - Arm Neoverse-N1: Added workaround for erratum 1946160
-
-    - Flattened device tree(libfdt)
-        - Added support for wrapper function to read UUIDs in string format from dtb
-
-- Platforms
-    - Added support for MediaTek MT8195
-    - Added support for Arm RD-N2 board
-
-    - Allwinner
-        - Added support for H616 SoC
-
-    - Arm
-        - Added support for GPT parser
-        - Protect GICR frames for fused/unused cores
-
-    - Arm Morello
-        - Added VirtIO network device to Morello FVP fdts
-
-    - Arm RD-N2
-        - Added support for variant 1 of RD-N2 platform
-        - Enable AMU support
-
-    - Arm RD-V1
-        - Enable AMU support
-
-    - Arm SGI
-        - Added support for platform variant build option
-
-    - Arm TC0
-        - Added Matterhorn ELP CPU support
-        - Added support for opteed
-
-    - Arm Juno
-        - Added support to use hw_config in BL31
-        - Use TRNG entropy source for SMCCC TRNG interface
-        - Condition Juno entropy source with CRC instructions
-
-    - Marvell Mochi
-        - Added support for detection of secure mode
-
-    - Marvell ARMADA
-        - Added support for new compile option A3720_DB_PM_WAKEUP_SRC
-        - Added support doing system reset via CM3 secure coprocessor
-        - Made several makefile enhancements required to build WTMI_MULTI_IMG and TIMDDRTOOL
-        - Added support for building DOIMAGETOOL tool
-        - Added new target mrvl_bootimage
-
-    - Mediatek MT8192
-        - Added support for rtc power off sequence
-
-    - Mediatek MT8195
-        - Added support for SiP service
-
-    - STM32MP1
-        - Added support for
-            - Seeed ODYSSEY SoM and board
-            - SDMMC2 and I2C2 pins in pinctrl
-            - I2C2 peripheral in DTS
-            - PIE for BL32
-            - TZC-400 interrupt managament
-            - Linux Automation MC-1 board
-
-    - Renesas RZG
-        - Added support for identifying EK874 RZ/G2E board
-        - Added support for identifying HopeRun HiHope RZ/G2H and RZ/G2H boards
-
-    - Rockchip
-        - Added support for stack protector
-
-    - QEMU
-        - Added support for ``max`` CPU
-        - Added Cortex-A72 support to ``virt`` platform
-        - Enabled trigger reboot from secure pl061
-
-    - QEMU SBSA
-        - Added support for sbsa-ref Embedded Controller
-
-    - NXP
-        - Added support for warm reset to retain ddr content
-        - Added support for image loader necessary for loading fip image
-
-        - lx2160a SoC Family
-            - Added support for
-                - new platform lx2160a-aqds
-                - new platform lx2160a-rdb
-                - new platform lx2162a-aqds
-                - errata handling
-
-    - IMX imx8mm
-        - Added support for trusted board boot
-
-    - TI K3
-        - Added support for lite device board
-        - Enabled Cortex-A72 erratum 1319367
-        - Enabled Cortex-A53 erratum 1530924
-
-    - Xilinx ZynqMP
-        - Added support for PS and system reset on WDT restart
-        - Added support for error management
-        - Enable support for log messages necessary for debug
-        - Added support for PM API SMC call for efuse and register access
-
-- Processes
-    - Introduced process for platform deprecation
-    - Added documentation for TF-A threat model
-    - Provided a copy of the MIT license to comply with the license
-      requirements of the arm-gic.h source file (originating from the Linux
-      kernel project and re-distributed in TF-A).
-
-- Services
-    - Added support for TRNG firmware interface service
-
-    - Arm
-        - Added SiP service to configure Ethos-N NPU
-
-    - SPMC
-        - Added documentation for SPM(Hafnium) SMMUv3 driver
-
-    - SPMD
-        - Added support for
-            - FFA_INTERRUPT forwading ABI
-            - FFA_SECONDARY_EP_REGISTER ABI
-            - FF-A v1.0 boot time power management, SPMC secondary core boot and
-              early run-time power management
-
-- Tools
-
-    - FIPTool
-        - Added mechanism to allow platform specific image UUID
-
-    - git hooks
-        - Added support for conventional commits through commitlint hook,
-          commitizen hook and husky configuration files.
-
-    - NXP tool
-        - Added support for a tool that creates pbl file from BL2
-
-    - Renesas RZ/G2
-        - Added tool support for creating bootparam and cert_header images
-
-    - CertCreate
-        - Added support for platform-defined certificates, keys, and extensions using
-          the platform's makefile
-
-    - shared tools
-        - Added EFI_GUID representation to uuid helper data structure
-
-Changed
-^^^^^^^
-
-- Common components
-    - Print newline after hex address in aarch64 el3_panic function
-    - Use proper ``#address-cells`` and ``#size-cells`` for reserved-memory in dtbs
-
-- Drivers
-
-    - Move SCMI driver from ST platform directory and make it common to all platforms
-
-    - Arm GICv3
-        - Shift eSPI register offset in GICD_OFFSET_64()
-        - Use mpidr to probe GICR for current CPU
-
-    - Arm TZC-400
-        - Adjust filter tag if it set to FILTER_BIT_ALL
-
-    - Cadence
-        - Enhance UART driver APIs to put characters to fifo
-
-    - Mediatek MT8192
-        - Move timer driver to common folder
-        - Enhanced sys_cirq driver to add more IC services
-
-    - Renesas
-        - Move ddr and delay driver to common directory
-
-    - Renesas rcar
-        - Treat log as device memory in console driver
-
-    - Renesas RZ Family:
-        - G2N and G2H SoCs
-             - Select MMC_CH1 for eMMC channel
-
-    - Marvell
-        - Added support for checking if TRNG unit is present
-
-    - Marvell A3K
-        - Set TXDCLK_2X_SEL bit during PCIe initialization
-        - Set mask parameter for every reg_set call
-
-    - Marvell Mochi
-        - Added missing stream IDs configurations
-
-    - MbedTLS
-        - Migrated to Mbed TLS v2.26.0
-
-    - IMX imx8mp
-        - Change the bl31 physical load address
-
-    - QEMU SBSA
-        - Enable secure variable storage
-
-    - SCMI
-        - Update power domain protocol version to 2.0
-
-    - STM32
-        - Remove dead code from nand FMC driver
-
-- Libraries
-    - C Standard Library
-        - Use macros to reduce duplicated code between snprintf and printf
-
-    - CPU support
-        - Sanity check pointers before use in AArch32 builds
-
-        - Arm Cortex-A78
-            - Remove rainier cpu workaround for errata 1542319
-
-        - Arm Makalu ELP
-            - Added "_arm" suffix to Makalu ELP CPU lib
-
-
-- Miscellaneous
-    - Editorconfig
-        - set max line length to 100
-
-- Platforms
-    - Allwinner
-        - Added reserved-memory node to DT
-        - Express memmap more dynamically
-        - Move SEPARATE_NOBITS_REGION to platforms
-        - Limit FDT checks to reduce code size
-        - Use CPUIDLE hardware when available
-        - Allow conditional compilation of SCPI and native PSCI ops
-        - Always use a 3MHz RSB bus clock
-        - Enable workaround for Cortex-A53 erratum 1530924
-        - Fixed non-default PRELOADED_BL33_BASE
-        - Leave CPU power alone during BL31 setup
-        - Added several psci hooks enhancements to improve system shutdown/reset
-          sequence
-        - Return the PMIC to I2C mode after use
-        - Separate code to power off self and other CPUs
-        - Split native and SCPI-based PSCI implementations
-
-    - Allwinner H6
-        - Added R_PRCM security setup for H6 board
-        - Added SPC security setup for H6 board
-        - Use RSB for the PMIC connection on H6
-
-    - Arm
-        - Store UUID as a string, rather than ints
-        - Replace FIP base and size macro with a generic name
-        - Move compile time switch from source to dt file
-        - Don't provide NT_FW_CONFIG when booting hafnium
-        - Do not setup 'disabled' regulator
-        - Increase SP max size
-        - Remove false dependency of ARM_LINUX_KERNEL_AS_BL33 on RESET_TO_BL31
-          and allow it to be enabled independently
-
-    - Arm FVP
-        - Do not map GIC region in BL1 and BL2
-
-    - Arm Juno
-        - Refactor juno_getentropy() to return 64 bits on each call
-
-    - Arm Morello
-        - Remove "virtio-rng" from Morello FVP
-        - Enable virtIO P9 device for Morello fvp
-
-    - Arm RDV1
-        - Allow all PSCI callbacks on RD-V1
-        - Rename rddaniel to rdv1
-
-    - Arm RDV1MC
-        - Rename rddanielxlr to rdv1mc
-        - Initialize TZC-400 controllers
-
-    - Arm TC0
-        - Updated GICR base address
-        - Use scmi_dvfs clock index 1 for cores 4-7 through fdt
-        - Added reserved-memory node for OP-TEE fdts
-        - Enabled Theodul DSU in TC platform
-        - OP-TEE as S-EL1 SP with SPMC at S-EL2
-        - Update Matterhorm ELP DVFS clock index
-
-    - Arm SGI
-        - Allow access to TZC controller on all chips
-        - Define memory regions for multi-chip platforms
-        - Allow access to nor2 flash and system registers from S-EL0
-        - Define default list of memory regions for DMC-620 TZC
-        - Improve macros defining cper buffer memory region
-        - Refactor DMC-620 error handling SMC function id
-        - Refactor SDEI specific macros
-        - Added platform id value for RDN2 platform
-        - Refactored header file inclusions and inclusion of memory mapping
-
-    - Arm RDN2
-        - Allow usage of secure partitions on RDN2 platform
-        - Update GIC redistributor and TZC base address
-
-    - Arm SGM775
-        - Deprecate Arm sgm775 FVP platform
-
-    - Marvell
-        - Increase TX FIFO EMPTY timeout from 2ms to 3ms
-        - Update delay code to be compatible with 1200 MHz CPU
-
-    - Marvell ARMADA
-        - Postpone MSS CPU startup to BL31 stage
-        - Allow builds without MSS support
-        - Use MSS SRAM in secure mode
-        - Added missing FORCE, .PHONY and clean targets
-        - Cleanup MSS SRAM if used for copy
-        - Move definition of mrvl_flash target to common marvell_common.mk file
-        - Show informative build messages and blank lines
-
-    - Marvell ARMADA A3K
-        - Added a new target mrvl_uart which builds UART image
-        - Added checks that WTP, MV_DDR_PATH and CRYPTOPP_PATH are correctly defined
-        - Allow use of the system Crypto++ library
-        - Build $(WTMI_ENC_IMG) in $(BUILD_PLAT) directory
-        - Build intermediate files in $(BUILD_PLAT) directory
-        - Build UART image files directly in $(BUILD_UART) subdirectory
-        - Correctly set DDR_TOPOLOGY and CLOCKSPRESET for WTMI
-        - Do not use 'echo -e' in Makefile
-        - Improve 4GB DRAM usage from 3.375 GB to 3.75 GB
-        - Remove unused variable WTMI_SYSINIT_IMG from Makefile
-        - Simplify check if WTP variable is defined
-        - Split building $(WTMI_MULTI_IMG) and $(TIMDDRTOOL)
-
-    - Marvell ARMADA A8K
-        - Allow CP1/CP2 mapping at BLE stage
-
-    - Mediatek MT8183
-        - Added timer V20 compensation
-
-    - Nvidia Tegra
-        - Rename SMC API
-
-    - TI K3
-        - Make plat_get_syscnt_freq2 helper check CNT_FID0 register
-        - Fill non-message data fields in sec_proxy with 0x0
-        - Update ti_sci_msg_req_reboot ABI to include domain
-        - Enable USE_COHERENT_MEM only for the generic board
-        - Explicitly map SEC_SRAM_BASE to 0x0
-        - Use BL31_SIZE instead of computing
-        - Define the correct number of max table entries and increase SRAM size
-          to account for additional table
-
-    - Raspberry Pi4
-        - Switch to gicv2.mk and GICV2_SOURCES
-
-    - Renesas
-        - Move headers and assembly files to common folder
-
-    - Renesas rzg
-        - Added device tree memory node enhancements
-
-    - Rockchip
-        - Switch to using common gicv3.mk
-
-    - STM32MP1
-        - Set BL sizes regardless of flags
-
-    - QEMU
-        - Include gicv2.mk for compiling GICv2 source files
-        - Change DEVICE2 definition for MMU
-        - Added helper to calculate the position shift from MPIDR
-
-    - QEMU SBSA
-        - Include libraries for Cortex-A72
-        - Increase SHARED_RAM_SIZE
-        - Addes support in spm_mm for upto 512 cores
-        - Added support for topology handling
-
-    - QTI
-        - Mandate SMC implementation
-
-    - Xilinx
-        - Rename the IPI CRC checksum macro
-        - Use fno-jump-tables flag in CPPFLAGS
-
-    - Xilinx versal
-        - Added the IPI CRC checksum macro support
-        - Mark IPI calls secure/non-secure
-        - Enable sgi to communicate with linux using IPI
-        - Remove Cortex-A53 compilation
-
-    - Xilinx ZynqMP
-        - Configure counter frequency during initialization
-        - Filter errors related to clock gate permissions
-        - Implement pinctrl request/release EEMI API
-        - Reimplement pinctrl get/set config parameter EEMI API calls
-        - Reimplement pinctrl set/get function EEMI API
-        - Update error codes to match Linux and PMU Firmware
-        - Update PM version and support PM version check
-        - Update return type in query functions
-        - Added missing ids for 43/46/47dr devices
-        - Checked for DLL status before doing reset
-        - Disable ITAPDLYENA bit for zero ITAP delay
-        - Include GICv2 makefile
-        - Remove the custom crash implementation
-
-- Services
-
-    - SPMD
-        - Lock the g_spmd_pm structure
-        - Declare third cactus instance as UP SP
-        - Provide number of vCPUs and VM size for first SP
-        - Remove ``chosen`` node from SPMC manifests
-        - Move OP-TEE SP manifest DTS to FVP platform
-        - Update OP-TEE SP manifest with device-regions node
-        - Remove device-memory node from SPMC manifests
-
-    - SPM_MM
-        - Use sp_boot_info to set SP context
-
-    - SDEI
-        - Updata the affinity of shared event
-
-- Tools
-    - FIPtool
-        - Do not print duplicate verbose lines about building fiptool
-
-    - CertCreate
-        - Updated tool for platform defined certs, keys & extensions
-        - Create only requested certificates
-        - Avoid duplicates in extension stack
-
-Resolved Issues
-^^^^^^^^^^^^^^^
-- Several fixes for typos and mis-spellings in documentation
-
-- Build system
-    - Fixed ${FIP_NAME} to be rebuilt only when needed in Makefile
-    - Do not mark file targets as .PHONY target in Makefile
-
-- Drivers
-    - Authorization
-        - Avoid NV counter upgrade without certificate validation
-
-    - Arm GICv3
-        - Fixed logical issue for num_eints
-        - Limit SPI ID to avoid misjudgement in GICD_OFFSET()
-        - Fixed potential GICD context override with ESPI enabled
-
-    - Marvell A3700
-        - Fixed configuring polarity invert bits
-
-    - Arm TZC-400
-        - Correct FAIL_CONTROL Privileged bit
-        - Fixed logical error in FILTER_BIT definitions
-
-    - Renesas rcar
-        - Fixed several coding style violations reported by checkpatch
-
-- Libraries
-    - Arch helpers
-        - Fixed assertions in processing dynamic relocations for AArch64 builds
-
-    - C standard library
-        - Fixed MISRA issues in memset() ABI
-
-    - RAS
-        - Fixed bug of binary search in RAS interrupt handler
-
-- Platforms
-
-    - Arm
-        - Fixed missing copyrights in arm-gic.h file
-        - Fixed the order of header files in several dts files
-        - Fixed error message printing in board makefile
-        - Fixed bug of overriding the last node in image load helper API
-        - Fixed stdout-path in fdts files of TC0 and N1SDP platforms
-        - Turn ON/OFF redistributor in sync with GIC CPU interface ON/OFF for css platforms
-
-    - Arm FVP
-        - Fixed Generic Timer interrupt types in platform dts files
-
-    - Arm Juno
-        - Fixed parallel build issue for romlib config
-
-    - Arm SGI
-        - Fixed bug in SDEI receive event of RAS handler
-
-    - Intel Agilex
-        - Fixed PLAT_MAX_PWR_LVL value
-
-    - Marvell
-        - Fixed SPD handling in dram port
-
-    - Marvell ARMADA
-        - Fixed TRNG return SMC handling
-        - Fixed the logic used for LD selector mask
-        - Fixed MSS firmware loader for A8K family
-
-    - ST
-        - Fixed few violations reported by coverity static checks
-
-    - STM32MP1
-        - Fixed SELFREF_TO_X32 mask in ddr driver
-        - Do not keep mmc_device_info in stack
-        - Correct plat_crash_console_flush()
-
-    - QEMU SBSA
-        - Fixed memory type of secure NOR flash
-
-    - QTI
-        - Fixed NUM_APID and REG_APID_MAP() argument in SPMI driver
-
-    - Intel
-        - Do not keep mmc_device_info in stack
-
-    - Hisilicon
-        - Do not keep mmc_device_info in stack
-
-
-- Services
-
-    - EL3 runtime
-        - Fixed the EL2 context save/restore routine by removing EL2 generic
-          timer system registers
-        - Added fix for exception handler in BL31 by synchronizing pending EA
-          using DSB barrier
-
-    - SPMD
-        - Fixed error codes to use int32_t type
-
-    - TSPD
-        - Added bug fix in tspd interrupt handling when TSP_NS_INTR_ASYNC_PREEMPT is enabled
-
-    - TRNG
-        - Fixed compilation errors with -O0 compile option
-
-    - DebugFS
-        - Checked channel index before calling clone function
-
-    - PSCI
-        - Fixed limit of 256 CPUs caused by cast to unsigned char
-
-    - TSP
-        - Fixed compilation erros when built with GCC 11.0.0 toolchain
-
-- Tools
-    - FIPtool
-        - Do not call ``make clean`` for ``all`` target
-
-    - CertCreate
-        - Fixed bug to avoid cleaning when building the binary
-        - Used preallocated parts of the HASH struct to avoid leaking HASH struct fields
-        - Free arguments copied with strdup
-        - Free keys after use
-        - Free X509_EXTENSION structures on stack to avoid leaking them
-        - Optimized the code to avoid unnecessary attempts to create non-requested
-          certificates
-
-Version 2.4
------------
-
-New Features
-^^^^^^^^^^^^
-
-- Architecture support
-    - Armv8.6-A
-        - Added support for Armv8.6 Enhanced Counter Virtualization (ECV)
-        - Added support for Armv8.6 Fine Grained Traps (FGT)
-        - Added support for Armv8.6 WFE trap delays
-
-- Bootloader images
-    - Added support for Measured Boot
-
-- Build System
-    - Added build option ``COT_DESC_IN_DTB`` to create Chain of Trust at runtime
-    - Added build option ``OPENSSL_DIR`` to direct tools to OpenSSL libraries
-    - Added build option ``RAS_TRAP_LOWER_EL_ERR_ACCESS`` to enable trapping RAS
-      register accesses from EL1/EL2 to EL3
-    - Extended build option ``BRANCH_PROTECTION`` to support branch target
-      identification
-
-- Common components
-    - Added support for exporting CPU nodes to the device tree
-    - Added support for single and dual-root Chains of Trust in secure
-      partitions
-
-- Drivers
-    - Added Broadcom RNG driver
-    - Added Marvell ``mg_conf_cm3`` driver
-    - Added System Control and Management Interface (SCMI) driver
-    - Added STMicroelectronics ETZPC driver
-
-    - Arm GICv3
-        - Added support for detecting topology at runtime
-
-    - Dual Root
-        - Added support for platform certificates
-
-    - Marvell Cache LLC
-        - Added support for mapping the entire LLC into SRAM
-
-    - Marvell CCU
-        - Added workaround for erratum 3033912
-
-    - Marvell CP110 COMPHY
-        - Added support for SATA COMPHY polarity inversion
-        - Added support for USB COMPHY polarity inversion
-        - Added workaround for erratum IPCE_COMPHY-1353
-
-    - STM32MP1 Clocks
-        - Added ``RTC`` as a gateable clock
-        - Added support for shifted clock selector bit masks
-        - Added support for using additional clocks as parents
-
-- Libraries
-    - C standard library
-        - Added support for hexadecimal and pointer format specifiers in
-          ``snprint()``
-        - Added assembly alternatives for various library functions
-
-    - CPU support
-        - Arm Cortex-A53
-            - Added workaround for erratum 1530924
-
-        - Arm Cortex-A55
-            - Added workaround for erratum 1530923
-
-        - Arm Cortex-A57
-            - Added workaround for erratum 1319537
-
-        - Arm Cortex-A76
-            - Added workaround for erratum 1165522
-            - Added workaround for erratum 1791580
-            - Added workaround for erratum 1868343
-
-        - Arm Cortex-A72
-            - Added workaround for erratum 1319367
-
-        - Arm Cortex-A77
-            - Added workaround for erratum 1508412
-            - Added workaround for erratum 1800714
-            - Added workaround for erratum 1925769
-
-        - Arm Neoverse-N1
-            - Added workaround for erratum 1868343
-
-    - EL3 Runtime
-        - Added support for saving/restoring registers related to nested
-          virtualization in EL2 context switches if the architecture supports it
-
-    - FCONF
-        - Added support for Measured Boot
-        - Added support for populating Chain of Trust properties
-        - Added support for loading the ``fw_config`` image
-
-    - Measured Boot
-        - Added support for event logging
-
-- Platforms
-    - Added support for Arm Morello
-    - Added support for Arm TC0
-    - Added support for iEi PUZZLE-M801
-    - Added support for Marvell OCTEON TX2 T9130
-    - Added support for MediaTek MT8192
-    - Added support for NXP i.MX 8M Nano
-    - Added support for NXP i.MX 8M Plus
-    - Added support for QTI CHIP SC7180
-    - Added support for STM32MP151F
-    - Added support for STM32MP153F
-    - Added support for STM32MP157F
-    - Added support for STM32MP151D
-    - Added support for STM32MP153D
-    - Added support for STM32MP157D
-
-    - Arm
-        - Added support for platform-owned SPs
-        - Added support for resetting to BL31
-
-    - Arm FPGA
-        - Added support for Klein
-        - Added support for Matterhorn
-        - Added support for additional CPU clusters
-
-    - Arm FVP
-        - Added support for performing SDEI platform setup at runtime
-        - Added support for SMCCC's ``SMCCC_ARCH_SOC_ID`` command
-        - Added an ``id`` field under the NV-counter node in the device tree to
-          differentiate between trusted and non-trusted NV-counters
-        - Added support for extracting the clock frequency from the timer node
-          in the device tree
-
-    - Arm Juno
-        - Added support for SMCCC's ``SMCCC_ARCH_SOC_ID`` command
-
-    - Arm N1SDP
-        - Added support for cross-chip PCI-e
-
-    - Marvell
-        - Added support for AVS reduction
-
-    - Marvell ARMADA
-        - Added support for twin-die combined memory device
-
-    - Marvell ARMADA A8K
-        - Added support for DDR with 32-bit bus width (both ECC and non-ECC)
-
-    - Marvell AP806
-        - Added workaround for erratum FE-4265711
-
-    - Marvell AP807
-        - Added workaround for erratum 3033912
-
-    - Nvidia Tegra
-        - Added debug printouts indicating SC7 entry sequence completion
-        - Added support for SDEI
-        - Added support for stack protection
-        - Added support for GICv3
-        - Added support for SMCCC's ``SMCCC_ARCH_SOC_ID`` command
-
-    - Nvidia Tegra194
-        - Added support for RAS exception handling
-        - Added support for SPM
-
-    - NXP i.MX
-        - Added support for SDEI
-
-    - QEMU SBSA
-        - Added support for the Secure Partition Manager
-
-    - QTI
-        - Added RNG driver
-        - Added SPMI PMIC arbitrator driver
-        - Added support for SMCCC's ``SMCCC_ARCH_SOC_ID`` command
-
-    - STM32MP1
-        - Added support for exposing peripheral interfaces to the non-secure
-          world at runtime
-        - Added support for SCMI clock and reset services
-        - Added support for STM32MP15x CPU revision Z
-        - Added support for SMCCC services in ``SP_MIN``
-
-- Services
-    - Secure Payload Dispatcher
-        - Added a provision to allow clients to retrieve the service UUID
-
-    - SPMC
-        - Added secondary core endpoint information to the SPMC context
-          structure
-
-    - SPMD
-        - Added support for booting OP-TEE as a guest S-EL1 Secure Partition on
-          top of Hafnium in S-EL2
-        - Added a provision for handling SPMC messages to register secondary
-          core entry points
-        - Added support for power management operations
-
-- Tools
-    - CertCreate
-        - Added support for secure partitions
-
-    - CertTool
-        - Added support for the ``fw_config`` image
-
-    - FIPTool
-        - Added support for the ``fw_config`` image
-
-Changed
-^^^^^^^
-
-- Architecture support
-
-- Bootloader images
-
-- Build System
-    - The top-level Makefile now supports building FipTool on Windows
-    - The default value of ``KEY_SIZE`` has been changed to to 2048 when RSA is
-      in use
-    - The previously-deprecated macro ``__ASSEMBLY__`` has now been removed
-
-- Common components
-    - Certain functions that flush the console will no longer return error
-      information
-
-- Drivers
-    - Arm GIC
-        - Usage of ``drivers/arm/gic/common/gic_common.c`` has now been
-          deprecated in favour of ``drivers/arm/gic/vX/gicvX.mk``
-        - Added support for detecting the presence of a GIC600-AE
-        - Added support for detecting the presence of a GIC-Clayton
-
-    - Marvell MCI
-        - Now performs link tuning for all MCI interfaces to improve performance
-
-    - Marvell MoChi
-        - PIDI masters are no longer forced into a non-secure access level when
-          ``LLC_SRAM`` is enabled
-        - The SD/MMC controllers are now accessible from guest virtual machines
-
-    - Mbed TLS
-        - Migrated to Mbed TLS v2.24.0
-
-    - STM32 FMC2 NAND
-        - Adjusted FMC node bindings to include an EBI controller node
-
-    - STM32 Reset
-        - Added an optional timeout argument to assertion functions
-
-    - STM32MP1 Clocks
-        - Enabled several additional system clocks during initialization
-
-- Libraries
-    - C Standard Library
-        - Improved ``memset`` performance by avoiding single-byte writes
-        - Added optimized assembly variants of ``memset``
-
-    - CPU support
-        - Renamed Cortex-Hercules to Cortex-A78
-        - Renamed Cortex-Hercules AE to Cortex-A78 AE
-        - Renamed Neoverse Zeus to Neoverse V1
-
-    - Coreboot
-        - Updated ‘coreboot_get_memory_type’ API to take an extra argument as a
-          ’memory size’ that used to return a valid memory type.
-
-    - libfdt
-        - Updated to latest upstream version
-
-- Platforms
-    - Allwinner
-        - Disabled non-secure access to PRCM power control registers
-
-    - Arm
-        - ``BL32_BASE`` is now platform-dependent when ``SPD_spmd`` is enabled
-        - Added support for loading the Chain of Trust from the device tree
-        - The firmware update check is now executed only once
-        - NV-counter base addresses are now loaded from the device tree when
-          ``COT_DESC_IN_DTB`` is enabled
-        - Now loads and populates ``fw_config`` and ``tb_fw_config``
-        - FCONF population now occurs after caches have been enabled in order
-          to reduce boot times
-
-    - Arm Corstone-700
-        - Platform support has been split into both an FVP and an FPGA variant
-
-    - Arm FPGA
-        - DTB and BL33 load addresses have been given sensible default values
-        - Now reads generic timer counter frequency, GICD and GICR base
-          addresses, and UART address from DT
-        - Now treats the primary PL011 UART as an SBSA Generic UART
-
-    - Arm FVP
-        - Secure interrupt descriptions, UART parameters, clock frequencies and
-          GICv3 parameters are now queried through FCONF
-        - UART parameters are now queried through the device tree
-        - Added an owner field to Cactus secure partitions
-        - Increased the maximum size of BL2 when the Chain of Trust is loaded
-          from the device tree
-        - Reduces the maximum size of BL31
-        - The ``FVP_USE_SP804_TIMER`` and ``FVP_VE_USE_SP804_TIMER`` build
-          options have been removed in favour of a common ``USE_SP804_TIMER``
-          option
-        - Added a third Cactus partition to manifests
-        - Device tree nodes now store UUIDs in big-endian
-
-    - Arm Juno
-        - Increased the maximum size of BL2 when optimizations have not been
-          applied
-        - Reduced the maximum size of BL31 and BL32
-
-    - Marvell AP807
-        - Enabled snoop filters
-
-    - Marvell ARMADA A3K
-        - UART recovery images are now suffixed with ``.bin``
-
-    - Marvell ARMADA A8K
-        - Option ``BL31_CACHE_DISABLE`` is now disabled (``0``) by default
-
-    - Nvidia Tegra
-        - Added VPR resize supported check when processing video memory resize
-          requests
-        - Added SMMU verification to prevent potential issues caused by
-          undetected corruption of the SMMU configuration during boot
-        - The GIC CPU interface is now properly disabled after CPU off
-        - The GICv2 sources list and the ``BL31_SIZE`` definition have been made
-          platform-specific
-        - The SPE driver will no longer flush the console when writing
-          individual characters
-
-    - Nvidia Tegra194
-        - TZDRAM setup has been moved to platform-specific early boot handlers
-        - Increased verbosity of debug prints for RAS SErrors
-        - Support for powering down CPUs during CPU suspend has been removed
-        - Now verifies firewall settings before using resources
-
-    - TI K3
-        - The UART number has been made configurable through ``K3_USART``
-
-    - Rockchip RK3368
-        - The maximum number of memory map regions has been increased to 20
-
-    - Socionext Uniphier
-        - The maximum size of BL33 has been increased to support larger
-          bootloaders
-
-    - STM32
-        - Removed platform-specific DT functions in favour of using existing
-          generic alternatives
-
-    - STM32MP1
-        - Increased verbosity of exception reports in debug builds
-        - Device trees have been updated to align with the Linux kernel
-        - Now uses the ETZPC driver to configure secure-aware interfaces for
-          assignment to the non-secure world
-        - Finished good variants have been added to the board identifier
-          enumerations
-        - Non-secure access to clocks and reset domains now depends on their
-          state of registration
-        - NEON is now disabled in ``SP_MIN``
-        - The last page of ``SYSRAM`` is now used as SCMI shared memory
-        - Checks to verify platform compatibility have been added to verify that
-          an image is compatible with the chip ID of the running platform
-
-    - QEMU SBSA
-        - Removed support for Arm's Cortex-A53
-
-- Services
-    - Renamed SPCI to FF-A
-
-    - SPMD
-        - No longer forwards requests to the non-secure world when retrieving
-          partition information
-        - SPMC manifest size is now retrieved directly from SPMD instead of the
-          device tree
-        - The FF-A version handler now returns SPMD's version when the origin
-          of the call is secure, and SPMC's version when the origin of the call
-          is non-secure
-
-    - SPMC
-        - Updated the manifest to declare CPU nodes in descending order as per
-          the SPM (Hafnium) multicore requirement
-        - Updated the device tree to mark 2GB as device memory for the first
-          partition excluding trusted DRAM region (which is reserved for SPMC)
-        - Increased the number of EC contexts to the maximum number of PEs as
-          per the FF-A specification
-
-- Tools
-    - FIPTool
-        - Now returns ``0`` on ``help`` and ``help <command>``
-
-    - Marvell DoImage
-        - Updated Mbed TLS support to v2.8
-
-    - SPTool
-        - Now appends CertTool arguments
-
-Resolved Issues
-^^^^^^^^^^^^^^^
-
-- Bootloader images
-    - Fixed compilation errors for dual-root Chains of Trust caused by symbol
-      collision
-
-    - BL31
-        - Fixed compilation errors on platforms with fewer than 4 cores caused
-          by initialization code exceeding the end of the stacks
-        - Fixed compilation errors when building a position-independent image
-
-- Build System
-    - Fixed invalid empty version strings
-    - Fixed compilation errors on Windows caused by a non-portable architecture
-      revision comparison
-
-- Drivers
-    - Arm GIC
-        - Fixed spurious interrupts caused by a missing barrier
-
-    - STM32 Flexible Memory Controller 2 (FMC2) NAND driver
-        - Fixed runtime instability caused by incorrect error detection logic
-
-    - STM32MP1 Clock driver
-        - Fixed incorrectly-formatted log messages
-        - Fixed runtime instability caused by improper clock gating procedures
-
-    - STMicroelectronics Raw NAND driver
-        - Fixed runtime instability caused by incorrect unit conversion when
-          waiting for NAND readiness
-
-- Libraries
-    - AMU
-        - Fixed timeout errors caused by excess error logging
-
-    - EL3 Runtime
-        - Fixed runtime instability caused by improper register save/restore
-          routine in EL2
-
-    - FCONF
-        - Fixed failure to initialize GICv3 caused by overly-strict device tree
-          requirements
-
-    - Measured Boot
-        - Fixed driver errors caused by a missing default value for the
-          ``HASH_ALG`` build option
-
-    - SPE
-        - Fixed feature detection check that prevented CPUs supporting SVE from
-          detecting support for SPE in the non-secure world
-
-    - Translation Tables
-        - Fixed various MISRA-C 2012 static analysis violations
-
-- Platforms
-    - Allwinner A64
-        - Fixed USB issues on certain battery-powered device caused by
-          improperly activated USB power rail
-
-    - Arm
-        - Fixed compilation errors caused by increase in BL2 size
-        - Fixed compilation errors caused by missing Makefile dependencies to
-          generated files when building the FIP
-        - Fixed MISRA-C 2012 static analysis violations caused by unused
-          structures in include directives intended to be feature-gated
-
-    - Arm FPGA
-        - Fixed initialization issues caused by incorrect MPIDR topology mapping
-          logic
-
-    - Arm RD-N1-edge
-        - Fixed compilation errors caused by mismatched parentheses in Makefile
-
-    - Arm SGI
-        - Fixed crashes due to the flash memory used for cold reboot attack
-          protection not being mapped
-
-    - Intel Agilex
-        - Fixed initialization issues caused by several compounding bugs
-
-    - Marvell
-        - Fixed compilation warnings caused by multiple Makefile inclusions
-
-    - Marvell ARMADA A3K
-        - Fixed boot issue in debug builds caused by checks on the BL33 load
-          address that are not appropriate for this platform
-
-    - Nvidia Tegra
-        - Fixed incorrect delay timer reads
-        - Fixed spurious interrupts in the non-secure world during cold boot
-          caused by the arbitration bit in the memory controller not being
-          cleared
-        - Fixed faulty video memory resize sequence
-
-    - Nvidia Tegra194
-        - Fixed incorrect alignment of TZDRAM base address
-
-    - NXP iMX8M
-        - Fixed CPU hot-plug issues caused by race condition
-
-    - STM32MP1
-        - Fixed compilation errors in highly-parallel builds caused by incorrect
-          Makefile dependencies
-
-    - STM32MP157C-ED1
-        - Fixed initialization issues caused by missing device tree hash node
-
-    - Raspberry Pi 3
-        - Fixed compilation errors caused by incorrect dependency ordering in
-          Makefile
-
-    - Rockchip
-        - Fixed initialization issues caused by non-critical errors when parsing
-          FDT being treated as critical
-
-    - Rockchip RK3368
-        - Fixed runtime instability caused by incorrect CPUID shift value
-
-    - QEMU
-        - Fixed compilation errors caused by incorrect dependency ordering in
-          Makefile
-
-    - QEMU SBSA
-        - Fixed initialization issues caused by FDT exceeding reserved memory
-          size
-
-    - QTI
-        - Fixed compilation errors caused by inclusion of a non-existent file
-
-- Services
-    - FF-A (previously SPCI)
-        - Fixed SPMD aborts caused by incorrect behaviour when the manifest is
-          page-aligned
-
-- Tools
-    - Fixed compilation issues when compiling tools from within their respective
-      directories
-
-    - FIPTool
-        - Fixed command line parsing issues on Windows when using arguments
-          whose names also happen to be a subset of another's
-
-    - Marvell DoImage
-        - Fixed PKCS signature verification errors at boot on some platforms
-          caused by generation of misaligned images
-
-Known Issues
-^^^^^^^^^^^^
-
-- Platforms
-    - NVIDIA Tegra
-        - Signed comparison compiler warnings occurring in libfdt are currently
-          being worked around by disabling the warning for the platform until
-          the underlying issue is resolved in libfdt
-
-Version 2.3
------------
-
-New Features
-^^^^^^^^^^^^
-
-- Arm Architecture
-   - Add support for Armv8.4-SecEL2 extension through the SPCI defined SPMD/SPMC
-     components.
-
-   - Build option to support EL2 context save and restore in the secure world
-     (CTX_INCLUDE_EL2_REGS).
-
-   - Add support for SMCCC v1.2 (introducing the new SMCCC_ARCH_SOC_ID SMC).
-     Note that the support is compliant, but the SVE registers save/restore will
-     be done as part of future S-EL2/SPM development.
-
-- BL-specific
-   - Enhanced BL2 bootloader flow to load secure partitions based on firmware
-     configuration data (fconf).
-
-   - Changes necessary to support SEPARATE_NOBITS_REGION feature
-
-   - TSP and BL2_AT_EL3: Add Position Independent Execution ``PIE`` support
-
-- Build System
-   - Add support for documentation build as a target in Makefile
-
-   - Add ``COT`` build option to select the Chain of Trust to use when the
-     Trusted Boot feature is enabled (default: ``tbbr``).
-
-   - Added creation and injection of secure partition packages into the FIP.
-
-   - Build option to support SPMC component loading and run at S-EL1
-     or S-EL2 (SPMD_SPM_AT_SEL2).
-
-   - Enable MTE support
-
-   - Enable Link Time Optimization in GCC
-
-   - Enable -Wredundant-decls warning check
-
-   - Makefile: Add support to optionally encrypt BL31 and BL32
-
-   - Add support to pass the nt_fw_config DTB to OP-TEE.
-
-   - Introduce per-BL ``CPPFLAGS``, ``ASFLAGS``, and ``LDFLAGS``
-
-   - build_macros: Add CREATE_SEQ function to generate sequence of numbers
-
-- CPU Support
-   - cortex-a57: Enable higher performance non-cacheable load forwarding
-
-   - Hercules: Workaround for Errata 1688305
-
-   - Klein: Support added for Klein CPU
-
-   - Matterhorn: Support added for Matterhorn CPU
-
-- Drivers
-   - auth: Add ``calc_hash`` function for hash calculation. Used for
-     authentication of images when measured boot is enabled.
-
-   - cryptocell: Add authenticated decryption framework, and support
-     for CryptoCell-713 and CryptoCell-712 RSA 3K
-
-   - gic600: Add support for multichip configuration and Clayton
-   - gicv3: Introduce makefile, Add extended PPI and SPI range,
-     Add support for probing multiple GIC Redistributor frames
-   - gicv4: Add GICv4 extension for GIC driver
-
-   - io: Add an IO abstraction layer to load encrypted firmwares
-
-   - mhu: Derive doorbell base address
-
-   - mtd: Add SPI-NOR, SPI-NAND, SPI-MEM, and raw NAND framework
-
-   - scmi: Allow use of multiple SCMI channels
-
-   - scu: Add a driver for snoop control unit
-
-- Libraries
-   - coreboot: Add memory range parsing and use generic base address
-
-   - compiler_rt: Import popcountdi2.c and popcountsi2.c files,
-     aeabi_ldivmode.S file and dependencies
-
-   - debugFS: Add DebugFS functionality
-
-   - el3_runtime: Add support for enabling S-EL2
-
-   - fconf: Add Firmware Configuration Framework (fconf) (experimental).
-
-   - libc: Add memrchr function
-
-   - locks: bakery: Use is_dcache_enabled() helper and add a DMB to
-     the 'read_cache_op' macro
-
-   - psci: Add support to enable different personality of the same soc.
-
-   - xlat_tables_v2: Add support to pass shareability attribute for
-     normal memory region, use get_current_el_maybe_constant() in
-     is_dcache_enabled(), read-only xlat tables for BL31 memory, and
-     add enable_mmu()
-
-- New Platforms Support
-   - arm/arm_fpga: New platform support added for FPGA
-
-   - arm/rddaniel: New platform support added for rd-daniel platform
-
-   - brcm/stingray: New platform support added for Broadcom stingray platform
-
-   - nvidia/tegra194: New platform support for Nvidia Tegra194 platform
-
-- Platforms
-   - allwinner: Implement PSCI system suspend using SCPI, add a msgbox
-     driver for use with SCPI, and reserve and map space for the SCP firmware
-   - allwinner: axp: Add AXP805 support
-   - allwinner: power: Add DLDO4 power rail
-
-   - amlogic: axg: Add a build flag when using ATOS as BL32 and support for
-     the A113D (AXG) platform
-
-   - arm/a5ds: Add ethernet node and L2 cache node in devicetree
-
-   - arm/common: Add support for the new `dualroot` chain of trust
-   - arm/common: Add support for SEPARATE_NOBITS_REGION
-   - arm/common: Re-enable PIE when RESET_TO_BL31=1
-   - arm/common: Allow boards to specify second DRAM Base address
-     and to define PLAT_ARM_TZC_FILTERS
-
-   - arm/corstone700: Add support for mhuv2 and stack protector
-
-   - arm/fvp: Add support for fconf in BL31 and SP_MIN. Populate power
-     domain descriptor dynamically by leveraging fconf APIs.
-   - arm/fvp: Add Cactus/Ivy Secure Partition information and use two
-     instances of Cactus at S-EL1
-   - arm/fvp: Add support to run BL32 in TDRAM and BL31 in secure DRAM
-   - arm/fvp: Add support for GICv4 extension and BL2 hash calculation in BL1
-
-   - arm/n1sdp: Setup multichip gic routing table, update platform macros
-     for dual-chip setup, introduce platform information SDS region, add
-     support to update presence of External LLC, and enable the
-     NEOVERSE_N1_EXTERNAL_LLC flag
-
-   - arm/rdn1edge: Add support for dual-chip configuration and use
-     CREATE_SEQ helper macro to compare chip count
-
-   - arm/sgm: Always use SCMI for SGM platforms
-   - arm/sgm775: Add support for dynamic config using fconf
-
-   - arm/sgi: Add multi-chip mode parameter in HW_CONFIG dts, macros for
-     remote chip device region, chip_id and multi_chip_mode to platform
-     variant info, and introduce number of chips macro
-
-   - brcm: Add BL2 and BL31 support common across Broadcom platforms
-   - brcm: Add iproc SPI Nor flash support, spi driver, emmc driver,
-     and support to retrieve plat_toc_flags
-
-   - hisilicon: hikey960: Enable system power off callback
-
-   - intel: Enable bridge access, SiP SMC secure register access, and uboot
-     entrypoint support
-   - intel: Implement platform specific system reset 2
-   - intel: Introduce mailbox response length handling
-
-   - imx: console: Use CONSOLE_T_BASE for UART base address and generic console_t
-     data structure
-   - imx8mm: Provide uart base as build option and add the support for opteed spd
-     on imx8mq/imx8mm
-   - imx8qx: Provide debug uart num as build
-   - imx8qm: Apply clk/pinmux configuration for DEBUG_CONSOLE and provide debug
-     uart num as build param
-
-   - marvell: a8k: Implement platform specific power off and add support
-     for loading MG CM3 images
-
-   - mediatek: mt8183: Add Vmodem/Vcore DVS init level
-
-   - qemu: Support optional encryption of BL31 and BL32 images
-     and ARM_LINUX_KERNEL_AS_BL33 to pass FDT address
-   - qemu: Define ARMV7_SUPPORTS_VFP
-   - qemu: Implement PSCI_CPU_OFF and qemu_system_off via semihosting
-
-   - renesas: rcar_gen3: Add new board revision for M3ULCB
-
-   - rockchip: Enable workaround for erratum 855873, claim a macro to enable
-     hdcp feature for DP, enable power domains of rk3399 before reset, add
-     support for UART3 as serial output, and initialize reset and poweroff
-     GPIOs with known invalid value
-
-   - rpi: Implement PSCI CPU_OFF, use MMIO accessor, autodetect Mini-UART
-     vs. PL011 configuration, and allow using PL011 UART for RPi3/RPi4
-   - rpi3: Include GPIO driver in all BL stages and use same "clock-less"
-     setup scheme as RPi4
-   - rpi3/4: Add support for offlining CPUs
-
-   - st: stm32mp1: platform.mk: Support generating multiple images in one build,
-     migrate to implicit rules, derive map file name from target name, generate
-     linker script with fixed name, and use PHONY for the appropriate targets
-   - st: stm32mp1: Add support for SPI-NOR, raw NAND, and SPI-NAND boot device,
-     QSPI, FMC2 driver
-   - st: stm32mp1: Use stm32mp_get_ddr_ns_size() function, set XN attribute for
-     some areas in BL2, dynamically map DDR later and non-cacheable during its
-     test, add a function to get non-secure DDR size, add DT helper for reg by
-     name, and add compilation flags for boot devices
-
-   - socionext: uniphier: Turn on ENABLE_PIE
-
-   - ti: k3: Add PIE support
-
-   - xilinx: versal: Add set wakeup source, client wakeup, query data, request
-     wakeup, PM_INIT_FINALIZE, PM_GET_TRUSTZONE_VERSION, PM IOCTL, support for
-     suspend related, and Get_ChipID APIs
-   - xilinx: versal: Implement power down/restart related EEMI, SMC handler for
-     EEMI, PLL related PM, clock related PM, pin control related PM, reset related
-     PM, device related PM , APIs
-   - xilinx: versal: Enable ipi mailbox service
-   - xilinx: versal: Add get_api_version support and support to send PM API to PMC
-     using IPI
-   - xilinx: zynqmp: Add checksum support for IPI data, GET_CALLBACK_DATA
-     function, support to query max divisor, CLK_SET_RATE_PARENT in gem clock
-     node, support for custom type flags, LPD WDT clock to the pm_clock structure,
-     idcodes for new RFSoC silicons ZU48DR and ZU49DR, and id for new RFSoC device
-     ZU39DR
-
-- Security
-   - Use Speculation Barrier instruction for v8.5+ cores
-
-   - Add support for optional firmware encryption feature (experimental).
-
-   - Introduce a new `dualroot` chain of trust.
-
-   - aarch64: Prevent speculative execution past ERET
-   - aarch32: Stop speculative execution past exception returns.
-
-- SPCI
-   - Introduced the Secure Partition Manager Dispatcher (SPMD) component as a
-     new standard service.
-
-- Tools
-   - cert_create: Introduce CoT build option and TBBR CoT makefile,
-     and define the dualroot CoT
-
-   - encrypt_fw: Add firmware authenticated encryption tool
-
-   - memory: Add show_memory script that prints a representation
-     of the memory layout for the latest build
-
-Changed
-^^^^^^^
-
-- Arm Architecture
-   - PIE: Make call to GDT relocation fixup generalized
-
-- BL-Specific
-   - Increase maximum size of BL2 image
-
-   - BL31: Discard .dynsym .dynstr .hash sections to make ENABLE_PIE work
-   - BL31: Split into two separate memory regions
-
-   - Unify BL linker scripts and reduce code duplication.
-
-- Build System
-   - Changes to drive cert_create for dualroot CoT
-
-   - Enable -Wlogical-op always
-
-   - Enable -Wshadow always
-
-   - Refactor the warning flags
-
-   - PIE: Pass PIE options only to BL31
-
-   - Reduce space lost to object alignment
-
-   - Set lld as the default linker for Clang builds
-
-   - Remove -Wunused-const-variable and -Wpadded warning
-
-   - Remove -Wmissing-declarations warning from WARNING1 level
-
-- Drivers
-   - authentication: Necessary fix in drivers to upgrade to mbedtls-2.18.0
-
-   - console: Integrate UART base address in generic console_t
-
-   - gicv3: Change API for GICR_IPRIORITYR accessors and separate
-     GICD and GICR accessor functions
-
-   - io: Change seek offset to signed long long and panic in case
-     of io setup failure
-
-   - smmu: SMMUv3: Changed retry loop to delay timer
-
-   - tbbr: Reduce size of hash and ECDSA key buffers when possible
-
-- Library Code
-   - libc: Consolidate the size_t, unified, and NULL definitions,
-     and unify intmax_t and uintmax_t on AArch32/64
-
-   - ROMLIB: Optimize memory layout when ROMLIB is used
-
-   - xlat_tables_v2: Use ARRAY_SIZE in REGISTER_XLAT_CONTEXT_FULL_SPEC,
-     merge REGISTER_XLAT_CONTEXT_{FULL_SPEC,RO_BASE_TABLE},
-     and simplify end address checks in mmap_add_region_check()
-
-- Platforms
-   - allwinner: Adjust SRAM A2 base to include the ARISC vectors, clean up MMU
-     setup, reenable USE_COHERENT_MEM, remove unused include path, move the
-     NOBITS region to SRAM A1, convert AXP803 regulator setup code into a driver,
-     enable clock before resetting I2C/RSB
-   - allwinner: h6: power: Switch to using the AXP driver
-   - allwinner: a64: power: Use fdt_for_each_subnode, remove obsolete register
-     check, remove duplicate DT check, and make sunxi_turn_off_soc static
-   - allwinner: Build PMIC bus drivers only in BL31, clean up PMIC-related error
-     handling, and synchronize PMIC enumerations
-
-   - arm/a5ds: Change boot address to point to DDR address
-
-   - arm/common: Check for out-of-bound accesses in the platform io policies
-
-   - arm/corstone700: Updating the kernel arguments to support initramfs,
-     use fdts DDR memory and XIP rootfs, and set UART clocks to 32MHz
-
-   - arm/fvp: Modify multithreaded dts file of DynamIQ FVPs, slightly bump
-     the stack size for bl1 and bl2, remove re-definition of topology related
-     build options, stop reclaiming init code with Clang builds, and map only
-     the needed DRAM region statically in BL31/SP_MIN
-
-   - arm/juno: Maximize space allocated to SCP_BL2
-
-   - arm/sgi: Bump bl1 RW limit, mark remote chip shared ram as non-cacheable,
-     move GIC related constants to board files, include AFF3 affinity in core
-     position calculation, move bl31_platform_setup to board file, and move
-     topology information to board folder
-
-   - common: Refactor load_auth_image_internal().
-
-   - hisilicon: Remove uefi-tools in hikey and hikey960 documentation
-
-   - intel: Modify non secure access function, BL31 address mapping, mailbox's
-     get_config_status, and stratix10 BL31 parameter handling
-   - intel: Remove un-needed checks for qspi driver r/w and s10 unused source code
-   - intel: Change all global sip function to static
-   - intel: Refactor common platform code
-   - intel: Create SiP service header file
-
-
-   - marvell: armada: scp_bl2: Allow loading up to 8 images
-   - marvell: comphy-a3700: Support SGMII COMPHY power off and fix USB3
-     powering on when on lane 2
-   - marvell: Consolidate console register calls
-
-   - mediatek: mt8183: Protect 4GB~8GB dram memory, refine GIC driver for
-     low power scenarios, and switch PLL/CLKSQ/ck_off/axi_26m control to SPM
-
-   - qemu: Update flash address map to keep FIP in secure FLASH0
-
-   - renesas: rcar_gen3: Update IPL and Secure Monitor Rev.2.0.6, update DDR
-     setting for H3, M3, M3N, change fixed destination address of BL31 and BL32,
-     add missing #{address,size}-cells into generated DT, pass DT to OpTee OS,
-     and move DDR drivers out of staging
-
-   - rockchip: Make miniloader ddr_parameter handling optional, cleanup securing
-     of ddr regions, move secure init to separate file, use base+size for secure
-     ddr regions, bring TZRAM_SIZE values in lined, and prevent macro expansion
-     in paths
-
-   - rpi: Move plat_helpers.S to common
-   - rpi3: gpio: Simplify GPIO setup
-   - rpi4: Skip UART initialisation
-
-   - st: stm32m1: Use generic console_t data structure, remove second
-     QSPI flash instance, update for FMC2 pin muxing, and reduce MAX_XLAT_TABLES
-     to 4
-
-   - socionext: uniphier: Make on-chip SRAM and I/O register regions configurable
-   - socionext: uniphier: Make PSCI related, counter control, UART, pinmon, NAND
-     controller, and eMMC controller base addresses configurable
-   - socionext: uniphier: Change block_addressing flag and the return value type
-     of .is_usb_boot() to bool
-   - socionext: uniphier: Run BL33 at EL2, call uniphier_scp_is_running() only
-     when on-chip STM is supported, define PLAT_XLAT_TABLES_DYNAMIC only for BL2,
-     support read-only xlat tables, use enable_mmu() in common function, shrink
-     UNIPHIER_ROM_REGION_SIZE, prepare uniphier_soc_info() for next SoC, extend
-     boot device detection for future SoCs, make all BL images completely
-     position-independent, make uniphier_mmap_setup() work with PIE, pass SCP
-     base address as a function parameter, set buffer offset and length for
-     io_block dynamically, and use more mmap_add_dynamic_region() for loading
-     images
-
-   - spd/trusty: Disable error messages seen during boot, allow gic base to be
-     specified with GICD_BASE, and allow getting trusty memsize from BL32_MEM_SIZE
-     instead of TSP_SEC_MEM_SIZE
-
-   - ti: k3: common: Enable ARM cluster power down and rename device IDs to
-     be more consistent
-   - ti: k3: drivers: ti_sci: Put sequence number in coherent memory and
-     remove indirect structure of const data
-
-   - xilinx: Move ipi mailbox svc to xilinx common
-   - xilinx: zynqmp: Use GIC framework for warm restart
-   - xilinx: zynqmp: pm: Move custom clock flags to typeflags, remove
-     CLK_TOPSW_LSBUS from invalid clock list and rename FPD WDT clock ID
-   - xilinx: versal: Increase OCM memory size for DEBUG builds and adjust
-     cpu clock, Move versal_def.h and versal_private to include directory
-
-- Tools
-   - sptool: Updated sptool to accommodate building secure partition packages.
-
-Resolved Issues
-^^^^^^^^^^^^^^^
-
-- Arm Architecture
-   - Fix crash dump for lower EL
-
-- BL-Specific
-   - Bug fix: Protect TSP prints with lock
-
-   - Fix boot failures on some builds linked with ld.lld.
-
-- Build System
-   - Fix clang build if CC is not in the path.
-
-   - Fix 'BL stage' comment for build macros
-
-- Code Quality
-   - coverity: Fix various MISRA violations including null pointer violations,
-     C issues in BL1/BL2/BL31 and FDT helper functions, using boolean essential,
-     type, and removing unnecessary header file and comparisons to LONG_MAX in
-     debugfs devfip
-
-   - Based on coding guidelines, replace all `unsigned long` depending on if
-     fixed based on AArch32 or AArch64.
-
-   - Unify type of "cpu_idx" and Platform specific defines across PSCI module.
-
-- Drivers
-   - auth: Necessary fix in drivers to upgrade to mbedtls-2.18.0
-
-   - delay_timer: Fix non-standard frequency issue in udelay
-
-   - gicv3: Fix compiler dependent behavior
-   - gic600: Fix include ordering according to the coding style and power up sequence
-
-- Library Code
-   - el3_runtime: Fix stack pointer maintenance on EA handling path,
-     fixup 'cm_setup_context' prototype, and adds TPIDR_EL2 register
-     to the context save restore routines
-
-   - libc: Fix SIZE_MAX on AArch32
-
-   - locks: T589: Fix insufficient ordering guarantees in bakery lock
-
-   - pmf: Fix 'tautological-constant-compare' error, Make the runtime
-     instrumentation work on AArch32, and Simplify PMF helper macro
-     definitions across header files
-
-   - xlat_tables_v2: Fix assembler warning of PLAT_RO_XLAT_TABLES
-
-- Platforms
-   - allwinner: Fix H6 GPIO and CCU memory map addresses and incorrect ARISC
-     code patch offset check
-
-   - arm/a5ds: Correct system freq and Cache Writeback Granule, and cleanup
-     enable-method in devicetree
-
-   - arm/fvp: Fix incorrect GIC mapping, BL31 load address and image size
-     for RESET_TO_BL31=1, topology description of cpus for DynamIQ based
-     FVP, and multithreaded FVP power domain tree
-   - arm/fvp: spm-mm: Correcting instructions to build SPM for FVP
-
-   - arm/common: Fix ROTPK hash generation for ECDSA encryption, BL2 bug in
-     dynamic configuration initialisation, and current RECLAIM_INIT_CODE behavior
-
-   - arm/rde1edge: Fix incorrect topology tree description
-
-   - arm/sgi: Fix the incorrect check for SCMI channel ID
-
-   - common: Flush dcache when storing timestamp
-
-   - intel: Fix UEFI decompression issue, memory calibration, SMC SIP service,
-     mailbox config return status, mailbox driver logic, FPGA manager on
-     reconfiguration, and mailbox send_cmd issue
-
-   - imx: Fix shift-overflow errors, the rdc memory region slot's offset,
-     multiple definition of ipc_handle, missing inclusion of cdefs.h, and
-     correct the SGIs that used for secure interrupt
-
-   - mediatek: mt8183: Fix AARCH64 init fail on CPU0
-
-   - rockchip: Fix definition of struct param_ddr_usage
-
-   - rpi4: Fix documentation of armstub config entry
-
-   - st: Correct io possible NULL pointer dereference and device_size type,
-     nand xor_ecc.val assigned value, static analysis tool issues, and fix
-     incorrect return value and correctly check pwr-regulators node
-
-   - xilinx: zynqmp: Correct syscnt freq for QEMU and fix clock models
-     and IDs of GEM-related clocks
-
-Known Issues
-^^^^^^^^^^^^
-
-- Build System
-   - dtb: DTB creation not supported when building on a Windows host.
-
-     This step in the build process is skipped when running on a Windows host. A
-     known issue from the 1.6 release.
-
-   - Intermittent assertion firing `ASSERT: services/spd/tspd/tspd_main.c:105`
-
-- Coverity
-   - Intermittent Race condition in Coverity Jenkins Build Job
-
-- Platforms
-   - arm/juno: System suspend from Linux does not function as documented in the
-     user guide
-
-     Following the instructions provided in the user guide document does not
-     result in the platform entering system suspend state as expected. A message
-     relating to the hdlcd driver failing to suspend will be emitted on the
-     Linux terminal.
-
-   - mediatek/mt6795: This platform does not build in this release
-
-Version 2.2
------------
-
-New Features
-^^^^^^^^^^^^
-
-- Architecture
-   - Enable Pointer Authentication (PAuth) support for Secure World
-       - Adds support for ARMv8.3-PAuth in BL1 SMC calls and
-         BL2U image for firmware updates.
-
-   - Enable Memory Tagging Extension (MTE) support in both secure and non-secure
-     worlds
-
-       - Adds support for the new Memory Tagging Extension arriving in
-         ARMv8.5. MTE support is now enabled by default on systems that
-         support it at EL0.
-       - To enable it at ELx for both the non-secure and the secure
-         world, the compiler flag ``CTX_INCLUDE_MTE_REGS`` includes register
-         saving and restoring when necessary in order to prevent information
-         leakage between the worlds.
-
-   - Add support for Branch Target Identification (BTI)
-
-- Build System
-   - Modify FVP makefile for CPUs that support both AArch64/32
-
-   - AArch32: Allow compiling with soft-float toolchain
-
-   - Makefile: Add default warning flags
-
-   - Add Makefile check for PAuth and AArch64
-
-   - Add compile-time errors for HW_ASSISTED_COHERENCY flag
-
-   - Apply compile-time check for AArch64-only CPUs
-
-   - build_macros: Add mechanism to prevent bin generation.
-
-   - Add support for default stack-protector flag
-
-   - spd: opteed: Enable NS_TIMER_SWITCH
-
-   - plat/arm: Skip BL2U if RESET_TO_SP_MIN flag is set
-
-   - Add new build option to let each platform select which implementation of spinlocks
-     it wants to use
-
-- CPU Support
-   - DSU: Workaround for erratum 798953 and 936184
-
-   - Neoverse N1: Force cacheable atomic to near atomic
-   - Neoverse N1: Workaround for erratum 1073348, 1130799, 1165347, 1207823,
-     1220197, 1257314, 1262606, 1262888, 1275112, 1315703, 1542419
-
-   - Neoverse Zeus: Apply the MSR SSBS instruction
-
-   - cortex-Hercules/HerculesAE: Support added for Cortex-Hercules and
-     Cortex-HerculesAE CPUs
-   - cortex-Hercules/HerculesAE: Enable AMU for Cortex-Hercules and Cortex-HerculesAE
-
-   - cortex-a76AE: Support added for Cortex-A76AE CPU
-   - cortex-a76: Workaround for erratum 1257314, 1262606, 1262888, 1275112,
-     1286807
-
-   - cortex-a65/a65AE: Support added for  Cortex-A65 and  Cortex-A65AE CPUs
-   - cortex-a65: Enable AMU for  Cortex-A65
-
-   - cortex-a55: Workaround for erratum 1221012
-
-   - cortex-a35: Workaround for erratum 855472
-
-   - cortex-a9: Workaround for erratum 794073
-
-- Drivers
-   - console: Allow the console to register multiple times
-
-   - delay: Timeout detection support
-
-   - gicv3: Enabled multi-socket GIC redistributor frame discovery and migrated
-     ARM platforms to the new API
-
-       - Adds ``gicv3_rdistif_probe`` function that delegates the responsibility
-         of discovering the corresponding redistributor base frame to each CPU
-         itself.
-
-   - sbsa: Add SBSA watchdog driver
-
-   - st/stm32_hash: Add HASH driver
-
-   - ti/uart: Add an AArch32 variant
-
-- Library at ROM (romlib)
-   - Introduce BTI support in Library at ROM (romlib)
-
-- New Platforms Support
-   - amlogic: g12a: New platform support added for the S905X2 (G12A) platform
-   - amlogic: meson/gxl: New platform support added for Amlogic Meson
-     S905x (GXL)
-
-   - arm/a5ds: New platform support added for A5 DesignStart
-
-   - arm/corstone: New platform support added for Corstone-700
-
-   - intel: New platform support added for Agilex
-
-   - mediatek:  New platform support added for MediaTek mt8183
-
-   - qemu/qemu_sbsa: New platform support added for QEMU SBSA platform
-
-   - renesas/rcar_gen3: plat: New platform support added for D3
-
-   - rockchip: New platform support added for px30
-   - rockchip: New platform support added for rk3288
-
-   - rpi: New platform support added for Raspberry Pi 4
-
-- Platforms
-   - arm/common: Introduce wrapper functions to setup secure watchdog
-
-   - arm/fvp: Add Delay Timer driver to BL1 and BL31 and option for defining
-     platform DRAM2 base
-   - arm/fvp: Add Linux DTS files for 32 bit threaded FVPs
-
-   - arm/n1sdp: Add code for DDR ECC enablement and BL33 copy to DDR, Initialise CNTFRQ
-     in Non Secure CNTBaseN
-
-   - arm/juno: Use shared mbedtls heap between BL1 and BL2 and add basic support for
-     dynamic config
-
-   - imx: Basic support for PicoPi iMX7D, rdc module init, caam module init,
-     aipstz init, IMX_SIP_GET_SOC_INFO, IMX_SIP_BUILDINFO added
-
-   - intel: Add ncore ccu driver
-
-   - mediatek/mt81*: Use new bl31_params_parse() helper
-
-   - nvidia: tegra: Add support for multi console interface
-
-   - qemu/qemu_sbsa: Adding memory mapping for both FLASH0/FLASH1
-   - qemu: Added gicv3 support, new console interface in AArch32, and sub-platforms
-
-   - renesas/rcar_gen3: plat: Add R-Car V3M support, new board revision for H3ULCB, DBSC4
-     setting before self-refresh mode
-
-   - socionext/uniphier: Support console based on  multi-console
-
-   - st: stm32mp1: Add OP-TEE, Avenger96, watchdog, LpDDR3, authentication support
-     and general SYSCFG management
-
-   - ti/k3: common: Add support for J721E, Use coherent memory for shared data, Trap all
-     asynchronous bus errors to EL3
-
-   - xilinx/zynqmp: Add support for multi console interface, Initialize IPI table from
-     zynqmp_config_setup()
-
-- PSCI
-   - Adding new optional PSCI hook ``pwr_domain_on_finish_late``
-      - This PSCI hook ``pwr_domain_on_finish_late`` is similar to
-        ``pwr_domain_on_finish`` but is guaranteed to be invoked when the
-        respective core and cluster are participating in coherency.
-
-- Security
-   - Speculative Store Bypass Safe (SSBS): Further enhance protection against Spectre
-     variant 4 by disabling speculative loads/stores (SPSR.SSBS bit) by default.
-
-   - UBSAN support and handlers
-      - Adds support for the Undefined Behaviour sanitizer. There are two types of
-        support offered - minimalistic trapping support which essentially immediately
-        crashes on undefined behaviour and full support with full debug messages.
-
-- Tools
-   - cert_create: Add support for bigger RSA key sizes (3KB and 4KB),
-     previously the maximum size was 2KB.
-
-   - fiptool: Add support to build fiptool on Windows.
-
-
-Changed
-^^^^^^^
-
-- Architecture
-   - Refactor ARMv8.3 Pointer Authentication support code
-
-   - backtrace: Strip PAC field when PAUTH is enabled
-
-   - Prettify crash reporting output on AArch64.
-
-   - Rework smc_unknown return code path in smc_handler
-      - Leverage the existing ``el3_exit()`` return routine for smc_unknown return
-        path rather than a custom set of instructions.
-
-- BL-Specific
-   - Invalidate dcache build option for BL2 entry at EL3
-
-   - Add missing support for BL2_AT_EL3 in XIP memory
-
-- Boot Flow
-   - Add helper to parse BL31 parameters (both versions)
-
-   - Factor out cross-BL API into export headers suitable for 3rd party code
-
-   - Introduce lightweight BL platform parameter library
-
-- Drivers
-   - auth: Memory optimization for Chain of Trust (CoT) description
-
-   - bsec: Move bsec_mode_is_closed_device() service to platform
-
-   - cryptocell: Move Cryptocell specific API into driver
-
-   - gicv3: Prevent pending G1S interrupt from becoming G0 interrupt
-
-   - mbedtls: Remove weak heap implementation
-
-   - mmc: Increase delay between ACMD41 retries
-   - mmc: stm32_sdmmc2: Correctly manage block size
-   - mmc: stm32_sdmmc2: Manage max-frequency property from DT
-
-   - synopsys/emmc: Do not change FIFO TH as this breaks some platforms
-   - synopsys: Update synopsys drivers to not rely on undefined overflow behaviour
-
-   - ufs: Extend the delay after reset to wait for some slower chips
-
-- Platforms
-   - amlogic/meson/gxl: Remove BL2 dependency from BL31
-
-   - arm/common: Shorten the Firmware Update (FWU) process
-
-   - arm/fvp: Remove GIC initialisation from secondary core cold boot
-
-   - arm/sgm: Temporarily disable shared Mbed TLS heap for SGM
-
-   - hisilicon: Update hisilicon drivers to not rely on undefined overflow behaviour
-
-   - imx: imx8: Replace PLAT_IMX8* with PLAT_imx8*, remove duplicated linker symbols and
-     deprecated code include, keep only IRQ 32 unmasked, enable all power domain by default
-
-   - marvell: Prevent SError accessing PCIe link, Switch to xlat_tables_v2, do not rely on
-     argument passed via smc, make sure that comphy init will use correct address
-
-   - mediatek: mt8173: Refactor RTC and PMIC drivers
-   - mediatek: mt8173: Apply MULTI_CONSOLE framework
-
-   - nvidia: Tegra: memctrl_v2: fix "overflow before widen" coverity issue
-
-   - qemu: Simplify the image size calculation, Move and generalise FDT PSCI fixup, move
-     gicv2 codes to separate file
-
-   - renesas/rcar_gen3: Convert to multi-console API, update QoS setting, Update IPL and
-     Secure Monitor Rev2.0.4, Change to restore timer counter value at resume, Update DDR
-     setting rev.0.35, qos: change subslot cycle, Change periodic write DQ training option.
-
-   - rockchip: Allow SOCs with undefined wfe check bits, Streamline and complete UARTn_BASE
-     macros, drop rockchip-specific imported linker symbols for bl31, Disable binary generation
-     for all SOCs, Allow console device to be set by DTB, Use new bl31_params_parse functions
-
-   - rpi/rpi3: Move shared rpi3 files into common directory
-
-   - socionext/uniphier: Set CONSOLE_FLAG_TRANSLATE_CRLF and clean up console driver
-   - socionext/uniphier: Replace DIV_ROUND_UP() with div_round_up() from utils_def.h
-
-   - st/stm32mp: Split stm32mp_io_setup function, move stm32_get_gpio_bank_clock() to private
-     file, correctly handle Clock Spreading Generator, move oscillator functions to generic file,
-     realign device tree files with internal devs, enable RTCAPB clock for dual-core chips, use a
-     common function to check spinlock is available, move check_header() to common code
-
-   - ti/k3: Enable SEPARATE_CODE_AND_RODATA by default, Remove shared RAM space,
-     Drop _ADDRESS from K3_USART_BASE to match other defines, Remove MSMC port
-     definitions, Allow USE_COHERENT_MEM for K3, Set L2 latency on A72 cores
-
-- PSCI
-   - PSCI: Lookup list of parent nodes to lock only once
-
-- Secure Partition Manager (SPM): SPCI Prototype
-   - Fix service UUID lookup
-
-   - Adjust size of virtual address space per partition
-
-   - Refactor xlat context creation
-
-   - Move shim layer to TTBR1_EL1
-
-   - Ignore empty regions in resource description
-
-- Security
-   - Refactor SPSR initialisation code
-
-   - SMMUv3: Abort DMA transactions
-      - For security DMA should be blocked at the SMMU by default unless explicitly
-        enabled for a device. SMMU is disabled after reset with all streams bypassing
-        the SMMU, and abortion of all incoming transactions implements a default deny
-        policy on reset.
-      - Moves ``bl1_platform_setup()`` function from arm_bl1_setup.c to FVP platforms'
-        fvp_bl1_setup.c and fvp_ve_bl1_setup.c files.
-
-- Tools
-   - cert_create: Remove RSA PKCS#1 v1.5 support
-
-
-Resolved Issues
-^^^^^^^^^^^^^^^
-
-- Architecture
-   - Fix the CAS spinlock implementation by adding a missing DSB in ``spin_unlock()``
-
-   - AArch64: Fix SCTLR bit definitions
-      - Removes incorrect ``SCTLR_V_BIT`` definition and adds definitions for
-        ARMv8.3-Pauth `EnIB`, `EnDA` and `EnDB` bits.
-
-   - Fix restoration of PAuth context
-      - Replace call to ``pauth_context_save()`` with ``pauth_context_restore()`` in
-        case of unknown SMC call.
-
-- BL-Specific Issues
-   - Fix BL31 crash reporting on AArch64 only platforms
-
-- Build System
-   - Remove several warnings reported with W=2 and W=1
-
-- Code Quality Issues
-   - SCTLR and ACTLR are 32-bit for AArch32 and 64-bit for AArch64
-   - Unify type of "cpu_idx" across PSCI module.
-   - Assert if power level value greater then PSCI_INVALID_PWR_LVL
-   - Unsigned long should not be used as per coding guidelines
-   - Reduce the number of memory leaks in cert_create
-   - Fix type of cot_desc_ptr
-   - Use explicit-width data types in AAPCS parameter structs
-   - Add python configuration for editorconfig
-   - BL1: Fix type consistency
-
-   - Enable -Wshift-overflow=2 to check for undefined shift behavior
-   - Updated upstream platforms to not rely on undefined overflow behaviour
-
-- Coverity Quality Issues
-   - Remove GGC ignore -Warray-bounds
-   - Fix Coverity #261967, Infinite loop
-   - Fix Coverity #343017, Missing unlock
-   - Fix Coverity #343008, Side affect in assertion
-   - Fix Coverity #342970, Uninitialized scalar variable
-
-- CPU Support
-   - cortex-a12: Fix MIDR mask
-
-- Drivers
-   - console: Remove Arm console unregister on suspend
-
-   - gicv3: Fix support for full SPI range
-
-   - scmi: Fix wrong payload length
-
-- Library Code
-   - libc: Fix sparse warning for __assert()
-
-   - libc: Fix memchr implementation
-
-- Platforms
-   - rpi: rpi3: Fix compilation error when stack protector is enabled
-
-   - socionext/uniphier: Fix compilation fail for SPM support build config
-
-   - st/stm32mp1: Fix TZC400 configuration against non-secure DDR
-
-   - ti/k3: common: Fix RO data area size calculation
-
-- Security
-   - AArch32: Disable Secure Cycle Counter
-      - Changes the implementation for disabling Secure Cycle Counter.
-        For ARMv8.5 the counter gets disabled by setting ``SDCR.SCCD`` bit on
-        CPU cold/warm boot. For the earlier architectures PMCR register is
-        saved/restored on secure world entry/exit from/to Non-secure state,
-        and cycle counting gets disabled by setting PMCR.DP bit.
-   - AArch64: Disable Secure Cycle Counter
-      - For ARMv8.5 the counter gets disabled by setting ``MDCR_El3.SCCD`` bit on
-        CPU cold/warm boot. For the earlier architectures PMCR_EL0 register is
-        saved/restored on secure world entry/exit from/to Non-secure state,
-        and cycle counting gets disabled by setting PMCR_EL0.DP bit.
-
-Deprecations
-^^^^^^^^^^^^
-
-- Common Code
-   - Remove MULTI_CONSOLE_API flag and references to it
-
-   - Remove deprecated `plat_crash_console_*`
-
-   - Remove deprecated interfaces `get_afflvl_shift`, `mpidr_mask_lower_afflvls`, `eret`
-
-   - AARCH32/AARCH64 macros are now deprecated in favor of ``__aarch64__``
-
-   - ``__ASSEMBLY__`` macro is now deprecated in favor of ``__ASSEMBLER__``
-
-- Drivers
-   - console: Removed legacy console API
-   - console: Remove deprecated finish_console_register
-
-   - tzc: Remove deprecated types `tzc_action_t` and `tzc_region_attributes_t`
-
-- Secure Partition Manager (SPM):
-   - Prototype SPCI-based SPM (services/std_svc/spm) will be replaced with alternative
-     methods of secure partitioning support.
-
-Known Issues
-^^^^^^^^^^^^
-
-- Build System Issues
-   - dtb: DTB creation not supported when building on a Windows host.
-
-     This step in the build process is skipped when running on a Windows host. A
-     known issue from the 1.6 release.
-
-- Platform Issues
-   - arm/juno: System suspend from Linux does not function as documented in the
-     user guide
-
-     Following the instructions provided in the user guide document does not
-     result in the platform entering system suspend state as expected. A message
-     relating to the hdlcd driver failing to suspend will be emitted on the
-     Linux terminal.
-
-   - mediatek/mt6795: This platform does not build in this release
-
-Version 2.1
------------
-
-New Features
-^^^^^^^^^^^^
-
-- Architecture
-   - Support for ARMv8.3 pointer authentication in the normal and secure worlds
-
-     The use of pointer authentication in the normal world is enabled whenever
-     architectural support is available, without the need for additional build
-     flags.
-
-     Use of pointer authentication in the secure world remains an
-     experimental configuration at this time. Using both the ``ENABLE_PAUTH``
-     and ``CTX_INCLUDE_PAUTH_REGS`` build flags, pointer authentication can be
-     enabled in EL3 and S-EL1/0.
-
-     See the :ref:`Firmware Design` document for additional details on the use
-     of pointer authentication.
-
-   - Enable Data Independent Timing (DIT) in EL3, where supported
-
-- Build System
-   - Support for BL-specific build flags
-
-   - Support setting compiler target architecture based on ``ARM_ARCH_MINOR``
-     build option.
-
-   - New ``RECLAIM_INIT_CODE`` build flag:
-
-     A significant amount of the code used for the initialization of BL31 is
-     not needed again after boot time. In order to reduce the runtime memory
-     footprint, the memory used for this code can be reclaimed after
-     initialization.
-
-     Certain boot-time functions were marked with the ``__init`` attribute to
-     enable this reclamation.
-
-- CPU Support
-   - cortex-a76: Workaround for erratum 1073348
-   - cortex-a76: Workaround for erratum 1220197
-   - cortex-a76: Workaround for erratum 1130799
-
-   - cortex-a75: Workaround for erratum 790748
-   - cortex-a75: Workaround for erratum 764081
-
-   - cortex-a73: Workaround for erratum 852427
-   - cortex-a73: Workaround for erratum 855423
-
-   - cortex-a57: Workaround for erratum 817169
-   - cortex-a57: Workaround for erratum 814670
-
-   - cortex-a55: Workaround for erratum 903758
-   - cortex-a55: Workaround for erratum 846532
-   - cortex-a55: Workaround for erratum 798797
-   - cortex-a55: Workaround for erratum 778703
-   - cortex-a55: Workaround for erratum 768277
-
-   - cortex-a53: Workaround for erratum 819472
-   - cortex-a53: Workaround for erratum 824069
-   - cortex-a53: Workaround for erratum 827319
-
-   - cortex-a17: Workaround for erratum 852423
-   - cortex-a17: Workaround for erratum 852421
-
-   - cortex-a15: Workaround for erratum 816470
-   - cortex-a15: Workaround for erratum 827671
-
-- Documentation
-   - Exception Handling Framework documentation
-
-   - Library at ROM (romlib) documentation
-
-   - RAS framework documentation
-
-   - Coding Guidelines document
-
-- Drivers
-   - ccn: Add API for setting and reading node registers
-      - Adds ``ccn_read_node_reg`` function
-      - Adds ``ccn_write_node_reg`` function
-
-   - partition: Support MBR partition entries
-
-   - scmi: Add ``plat_css_get_scmi_info`` function
-
-     Adds a new API ``plat_css_get_scmi_info`` which lets the platform
-     register a platform-specific instance of ``scmi_channel_plat_info_t`` and
-     remove the default values
-
-   - tzc380: Add TZC-380 TrustZone Controller driver
-
-   - tzc-dmc620: Add driver to manage the TrustZone Controller within the
-     DMC-620 Dynamic Memory Controller
-
-- Library at ROM (romlib)
-   - Add platform-specific jump table list
-
-   - Allow patching of romlib functions
-
-     This change allows patching of functions in the romlib. This can be done by
-     adding "patch" at the end of the jump table entry for the function that
-     needs to be patched in the file jmptbl.i.
-
-- Library Code
-   - Support non-LPAE-enabled MMU tables in AArch32
-
-   - mmio: Add ``mmio_clrsetbits_16`` function
-      - 16-bit variant of ``mmio_clrsetbits``
-
-   - object_pool: Add Object Pool Allocator
-      - Manages object allocation using a fixed-size static array
-      - Adds ``pool_alloc`` and ``pool_alloc_n`` functions
-      - Does not provide any functions to free allocated objects (by design)
-
-   - libc: Added ``strlcpy`` function
-
-   - libc: Import ``strrchr`` function from FreeBSD
-
-   - xlat_tables: Add support for ARMv8.4-TTST
-
-   - xlat_tables: Support mapping regions without an explicitly specified VA
-
-- Math
-   - Added softudiv macro to support software division
-
-- Memory Partitioning And Monitoring (MPAM)
-   - Enabled MPAM EL2 traps (``MPAMHCR_EL2`` and ``MPAM_EL2``)
-
-- Platforms
-   - amlogic: Add support for Meson S905 (GXBB)
-
-   - arm/fvp_ve: Add support for FVP Versatile Express platform
-
-   - arm/n1sdp: Add support for Neoverse N1 System Development platform
-
-   - arm/rde1edge: Add support for Neoverse E1 platform
-
-   - arm/rdn1edge: Add support for Neoverse N1 platform
-
-   - arm: Add support for booting directly to Linux without an intermediate
-     loader (AArch32)
-
-   - arm/juno: Enable new CPU errata workarounds for A53 and A57
-
-   - arm/juno: Add romlib support
-
-     Building a combined BL1 and ROMLIB binary file with the correct page
-     alignment is now supported on the Juno platform. When ``USE_ROMLIB`` is set
-     for Juno, it generates the combined file ``bl1_romlib.bin`` which needs to
-     be used instead of bl1.bin.
-
-   - intel/stratix: Add support for Intel Stratix 10 SoC FPGA platform
-
-   - marvell: Add support for Armada-37xx SoC platform
-
-   - nxp: Add support for i.MX8M and i.MX7 Warp7 platforms
-
-   - renesas: Add support for R-Car Gen3 platform
-
-   - xilinx: Add support for Versal ACAP platforms
-
-- Position-Independent Executable (PIE)
-
-  PIE support has initially been added to BL31. The ``ENABLE_PIE`` build flag is
-  used to enable or disable this functionality as required.
-
-- Secure Partition Manager
-   - New SPM implementation based on SPCI Alpha 1 draft specification
-
-     A new version of SPM has been implemented, based on the SPCI (Secure
-     Partition Client Interface) and SPRT (Secure Partition Runtime) draft
-     specifications.
-
-     The new implementation is a prototype that is expected to undergo intensive
-     rework as the specifications change. It has basic support for multiple
-     Secure Partitions and Resource Descriptions.
-
-     The older version of SPM, based on MM (ARM Management Mode Interface
-     Specification), is still present in the codebase. A new build flag,
-     ``SPM_MM`` has been added to allow selection of the desired implementation.
-     This flag defaults to 1, selecting the MM-based implementation.
-
-- Security
-   - Spectre Variant-1 mitigations (``CVE-2017-5753``)
-
-   - Use Speculation Store Bypass Safe (SSBS) functionality where available
-
-     Provides mitigation against ``CVE-2018-19440`` (Not saving x0 to x3
-     registers can leak information from one Normal World SMC client to another)
-
-
-Changed
-^^^^^^^
-
-- Build System
-   - Warning levels are now selectable with ``W=<1,2,3>``
-
-   - Removed unneeded include paths in PLAT_INCLUDES
-
-   - "Warnings as errors" (Werror) can be disabled using ``E=0``
-
-   - Support totally quiet output with ``-s`` flag
-
-   - Support passing options to checkpatch using ``CHECKPATCH_OPTS=<opts>``
-
-   - Invoke host compiler with ``HOSTCC / HOSTCCFLAGS`` instead of ``CC / CFLAGS``
-
-   - Make device tree pre-processing similar to U-boot/Linux by:
-      - Creating separate ``CPPFLAGS`` for DT preprocessing so that compiler
-        options specific to it can be accommodated.
-      - Replacing ``CPP`` with ``PP`` for DT pre-processing
-
-- CPU Support
-   - Errata report function definition is now mandatory for CPU support files
-
-     CPU operation files must now define a ``<name>_errata_report`` function to
-     print errata status. This is no longer a weak reference.
-
-- Documentation
-   - Migrated some content from GitHub wiki to ``docs/`` directory
-
-   - Security advisories now have CVE links
-
-   - Updated copyright guidelines
-
-- Drivers
-   - console: The ``MULTI_CONSOLE_API`` framework has been rewritten in C
-
-   - console: Ported multi-console driver to AArch32
-
-   - gic: Remove 'lowest priority' constants
-
-     Removed ``GIC_LOWEST_SEC_PRIORITY`` and ``GIC_LOWEST_NS_PRIORITY``.
-     Platforms should define these if required, or instead determine the correct
-     priority values at runtime.
-
-   - delay_timer: Check that the Generic Timer extension is present
-
-   - mmc: Increase command reply timeout to 10 milliseconds
-
-   - mmc: Poll eMMC device status to ensure ``EXT_CSD`` command completion
-
-   - mmc: Correctly check return code from ``mmc_fill_device_info``
-
-- External Libraries
-
-   - libfdt: Upgraded from 1.4.2 to 1.4.6-9
-
-   - mbed TLS: Upgraded from 2.12 to 2.16
-
-     This change incorporates fixes for security issues that should be reviewed
-     to determine if they are relevant for software implementations using
-     Trusted Firmware-A. See the `mbed TLS releases`_ page for details on
-     changes from the 2.12 to the 2.16 release.
-
-- Library Code
-   - compiler-rt: Updated ``lshrdi3.c`` and ``int_lib.h`` with changes from
-     LLVM master branch (r345645)
-
-   - cpu: Updated macro that checks need for ``CVE-2017-5715`` mitigation
-
-   - libc: Made setjmp and longjmp C standard compliant
-
-   - libc: Allowed overriding the default libc (use ``OVERRIDE_LIBC``)
-
-   - libc: Moved setjmp and longjmp to the ``libc/`` directory
-
-- Platforms
-   - Removed Mbed TLS dependency from plat_bl_common.c
-
-   - arm: Removed unused ``ARM_MAP_BL_ROMLIB`` macro
-
-   - arm: Removed ``ARM_BOARD_OPTIMISE_MEM`` feature and build flag
-
-   - arm: Moved several components into ``drivers/`` directory
-
-     This affects the SDS, SCP, SCPI, MHU and SCMI components
-
-   - arm/juno: Increased maximum BL2 image size to ``0xF000``
-
-     This change was required to accommodate a larger ``libfdt`` library
-
-- SCMI
-   - Optimized bakery locks when hardware-assisted coherency is enabled using the
-     ``HW_ASSISTED_COHERENCY`` build flag
-
-- SDEI
-   - Added support for unconditionally resuming secure world execution after
-     |SDEI| event processing completes
-
-     |SDEI| interrupts, although targeting EL3, occur on behalf of the non-secure
-     world, and may have higher priority than secure world
-     interrupts. Therefore they might preempt secure execution and yield
-     execution to the non-secure |SDEI| handler. Upon completion of |SDEI| event
-     handling, resume secure execution if it was preempted.
-
-- Translation Tables (XLAT)
-   - Dynamically detect need for ``Common not Private (TTBRn_ELx.CnP)`` bit
-
-     Properly handle the case where ``ARMv8.2-TTCNP`` is implemented in a CPU
-     that does not implement all mandatory v8.2 features (and so must claim to
-     implement a lower architecture version).
-
-
-Resolved Issues
-^^^^^^^^^^^^^^^
-
-- Architecture
-   - Incorrect check for SSBS feature detection
-
-   - Unintentional register clobber in AArch32 reset_handler function
-
-- Build System
-   - Dependency issue during DTB image build
-
-   - Incorrect variable expansion in Arm platform makefiles
-
-   - Building on Windows with verbose mode (``V=1``) enabled is broken
-
-   - AArch32 compilation flags is missing ``$(march32-directive)``
-
-- BL-Specific Issues
-   - bl2: ``uintptr_t is not defined`` error when ``BL2_IN_XIP_MEM`` is defined
-
-   - bl2: Missing prototype warning in ``bl2_arch_setup``
-
-   - bl31: Omission of Global Offset Table (GOT) section
-
-- Code Quality Issues
-   - Multiple MISRA compliance issues
-
-   - Potential NULL pointer dereference (Coverity-detected)
-
-- Drivers
-   - mmc: Local declaration of ``scr`` variable causes a cache issue when
-     invalidating after the read DMA transfer completes
-
-   - mmc: ``ACMD41`` does not send voltage information during initialization,
-     resulting in the command being treated as a query. This prevents the
-     command from initializing the controller.
-
-   - mmc: When checking device state using ``mmc_device_state()`` there are no
-     retries attempted in the event of an error
-
-   - ccn: Incorrect Region ID calculation for RN-I nodes
-
-   - console: ``Fix MULTI_CONSOLE_API`` when used as a crash console
-
-   - partition: Improper NULL checking in gpt.c
-
-   - partition: Compilation failure in ``VERBOSE`` mode (``V=1``)
-
-- Library Code
-   - common: Incorrect check for Address Authentication support
-
-   - xlat: Fix XLAT_V1 / XLAT_V2 incompatibility
-
-     The file ``arm_xlat_tables.h`` has been renamed to ``xlat_tables_compat.h``
-     and has been moved to a common folder. This header can be used to guarantee
-     compatibility, as it includes the correct header based on
-     ``XLAT_TABLES_LIB_V2``.
-
-   - xlat: armclang unused-function warning on ``xlat_clean_dcache_range``
-
-   - xlat: Invalid ``mm_cursor`` checks in ``mmap_add`` and ``mmap_add_ctx``
-
-   - sdei: Missing ``context.h`` header
-
-- Platforms
-   - common: Missing prototype warning for ``plat_log_get_prefix``
-
-   - arm: Insufficient maximum BL33 image size
-
-   - arm: Potential memory corruption during BL2-BL31 transition
-
-     On Arm platforms, the BL2 memory can be overlaid by BL31/BL32. The memory
-     descriptors describing the list of executable images are created in BL2
-     R/W memory, which could be possibly corrupted later on by BL31/BL32 due
-     to overlay. This patch creates a reserved location in SRAM for these
-     descriptors and are copied over by BL2 before handing over to next BL
-     image.
-
-   - juno: Invalid behaviour when ``CSS_USE_SCMI_SDS_DRIVER`` is not set
-
-     In ``juno_pm.c`` the ``css_scmi_override_pm_ops`` function was used
-     regardless of whether the build flag was set. The original behaviour has
-     been restored in the case where the build flag is not set.
-
-- Tools
-   - fiptool: Incorrect UUID parsing of blob parameters
-
-   - doimage: Incorrect object rules in Makefile
-
-
-Deprecations
-^^^^^^^^^^^^
-
-- Common Code
-   - ``plat_crash_console_init`` function
-
-   - ``plat_crash_console_putc`` function
-
-   - ``plat_crash_console_flush`` function
-
-   - ``finish_console_register`` macro
-
-- AArch64-specific Code
-   - helpers: ``get_afflvl_shift``
-
-   - helpers: ``mpidr_mask_lower_afflvls``
-
-   - helpers: ``eret``
-
-- Secure Partition Manager (SPM)
-   - Boot-info structure
-
-
-Known Issues
-^^^^^^^^^^^^
-
-- Build System Issues
-   - dtb: DTB creation not supported when building on a Windows host.
-
-     This step in the build process is skipped when running on a Windows host. A
-     known issue from the 1.6 release.
-
-- Platform Issues
-   - arm/juno: System suspend from Linux does not function as documented in the
-     user guide
-
-     Following the instructions provided in the user guide document does not
-     result in the platform entering system suspend state as expected. A message
-     relating to the hdlcd driver failing to suspend will be emitted on the
-     Linux terminal.
-
-   - arm/juno: The firmware update use-cases do not work with motherboard
-     firmware version < v1.5.0 (the reset reason is not preserved). The Linaro
-     18.04 release has MB v1.4.9. The MB v1.5.0 is available in Linaro 18.10
-     release.
-
-   - mediatek/mt6795: This platform does not build in this release
-
-Version 2.0
------------
-
-New Features
-^^^^^^^^^^^^
-
--  Removal of a number of deprecated APIs
-
-   -  A new Platform Compatibility Policy document has been created which
-      references a wiki page that maintains a listing of deprecated
-      interfaces and the release after which they will be removed.
-
-   -  All deprecated interfaces except the MULTI_CONSOLE_API have been removed
-      from the code base.
-
-   -  Various Arm and partner platforms have been updated to remove the use of
-      removed APIs in this release.
-
-   -  This release is otherwise unchanged from 1.6 release
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  No issues known at 1.6 release resolved in 2.0 release
-
-Known Issues
-^^^^^^^^^^^^
-
--  DTB creation not supported when building on a Windows host. This step in the
-   build process is skipped when running on a Windows host. Known issue from
-   1.6 version.
-
--  As a result of removal of deprecated interfaces the Nvidia Tegra, Marvell
-   Armada 8K and MediaTek MT6795 platforms do not build in this release.
-   Also MediaTek MT8173, NXP QorIQ LS1043A, NXP i.MX8QX, NXP i.MX8QMa,
-   Rockchip RK3328, Rockchip RK3368 and Rockchip RK3399 platforms have not been
-   confirmed to be working after the removal of the deprecated interfaces
-   although they do build.
-
-Version 1.6
------------
-
-New Features
-^^^^^^^^^^^^
-
--  Addressing Speculation Security Vulnerabilities
-
-   -  Implement static workaround for CVE-2018-3639 for AArch32 and AArch64
-
-   -  Add support for dynamic mitigation for CVE-2018-3639
-
-   -  Implement dynamic mitigation for CVE-2018-3639 on Cortex-A76
-
-   -  Ensure |SDEI| handler executes with CVE-2018-3639 mitigation enabled
-
--  Introduce RAS handling on AArch64
-
-   -  Some RAS extensions are mandatory for Armv8.2 CPUs, with others
-      mandatory for Armv8.4 CPUs however, all extensions are also optional
-      extensions to the base Armv8.0 architecture.
-
-   -  The Armv8 RAS Extensions introduced Standard Error Records which are a
-      set of standard registers to configure RAS node policy and allow RAS
-      Nodes to record and expose error information for error handling agents.
-
-   -  Capabilities are provided to support RAS Node enumeration and iteration
-      along with individual interrupt registrations and fault injections
-      support.
-
-   -  Introduce handlers for Uncontainable errors, Double Faults and EL3
-      External Aborts
-
--  Enable Memory Partitioning And Monitoring (MPAM) for lower EL's
-
-   -  Memory Partitioning And Monitoring is an Armv8.4 feature that enables
-      various memory system components and resources to define partitions.
-      Software running at various ELs can then assign themselves to the
-      desired partition to control their performance aspects.
-
-   -  When ENABLE_MPAM_FOR_LOWER_ELS is set to 1, EL3 allows
-      lower ELs to access their own MPAM registers without trapping to EL3.
-      This patch however, doesn't make use of partitioning in EL3; platform
-      initialisation code should configure and use partitions in EL3 if
-      required.
-
--  Introduce ROM Lib Feature
-
-   -  Support combining several libraries into a self-called "romlib" image,
-      that may be shared across images to reduce memory footprint. The romlib
-      image is stored in ROM but is accessed through a jump-table that may be
-      stored in read-write memory, allowing for the library code to be patched.
-
--  Introduce Backtrace Feature
-
-   -  This function displays the backtrace, the current EL and security state
-      to allow a post-processing tool to choose the right binary to interpret
-      the dump.
-
-   -  Print backtrace in assert() and panic() to the console.
-
--  Code hygiene changes and alignment with MISRA C-2012 guideline with fixes
-   addressing issues complying to the following rules:
-
-   -  MISRA rules 4.9, 5.1, 5.3, 5.7, 8.2-8.5, 8.8, 8.13, 9.3, 10.1,
-      10.3-10.4, 10.8, 11.3, 11.6, 12.1, 14.4, 15.7, 16.1-16.7, 17.7-17.8,
-      20.7, 20.10, 20.12, 21.1, 21.15, 22.7
-
-   -  Clean up the usage of void pointers to access symbols
-
-   -  Increase usage of static qualifier to locally used functions and data
-
-   -  Migrated to use of u_register_t for register read/write to better
-      match AArch32 and AArch64 type sizes
-
-   -  Use int-ll64 for both AArch32 and AArch64 to assist in consistent
-      format strings between architectures
-
-   -  Clean up TF-A libc by removing non arm copyrighted implementations
-      and replacing them with modified FreeBSD and SCC implementations
-
--  Various changes to support Clang linker and assembler
-
-   -  The clang assembler/preprocessor is used when Clang is selected. However,
-      the clang linker is not used because it is unable to link TF-A objects
-      due to immaturity of clang linker functionality at this time.
-
--  Refactor support APIs into Libraries
-
-   -  Evolve libfdt, mbed TLS library and standard C library sources as
-      proper libraries that TF-A may be linked against.
-
--  CPU Enhancements
-
-   -  Add CPU support for Cortex-Ares and Cortex-A76
-
-   -  Add AMU support for Cortex-Ares
-
-   -  Add initial CPU support for Cortex-Deimos
-
-   -  Add initial CPU support for Cortex-Helios
-
-   -  Implement dynamic mitigation for CVE-2018-3639 on Cortex-A76
-
-   -  Implement Cortex-Ares erratum 1043202 workaround
-
-   -  Implement DSU erratum 936184 workaround
-
-   -  Check presence of fix for errata 843419 in Cortex-A53
-
-   -  Check presence of fix for errata 835769 in Cortex-A53
-
--  Translation Tables Enhancements
-
-   -  The xlat v2 library has been refactored in order to be reused by
-      different TF components at different EL's including the addition of EL2.
-      Some refactoring to make the code more generic and less specific to TF,
-      in order to reuse the library outside of this project.
-
--  SPM Enhancements
-
-   -  General cleanups and refactoring to pave the way to multiple partitions
-      support
-
--  SDEI Enhancements
-
-   -  Allow platforms to define explicit events
-
-   -  Determine client EL from NS context's SCR_EL3
-
-   -  Make dispatches synchronous
-
-   -  Introduce jump primitives for BL31
-
-   -  Mask events after CPU wakeup in |SDEI| dispatcher to conform to the
-      specification
-
--  Misc TF-A Core Common Code Enhancements
-
-   -  Add support for eXecute In Place (XIP) memory in BL2
-
-   -  Add support for the SMC Calling Convention 2.0
-
-   -  Introduce External Abort handling on AArch64
-      External Abort routed to EL3 was reported as an unhandled exception
-      and caused a panic. This change enables Trusted Firmware-A to handle
-      External Aborts routed to EL3.
-
-   -  Save value of ACTLR_EL1 implementation-defined register in the CPU
-      context structure rather than forcing it to 0.
-
-   -  Introduce ARM_LINUX_KERNEL_AS_BL33 build option, which allows BL31 to
-      directly jump to a Linux kernel. This makes for a quicker and simpler
-      boot flow, which might be useful in some test environments.
-
-   -  Add dynamic configurations for BL31, BL32 and BL33 enabling support for
-      Chain of Trust (COT).
-
-   -  Make TF UUID RFC 4122 compliant
-
--  New Platform Support
-
-   -  Arm SGI-575
-
-   -  Arm SGM-775
-
-   -  Allwinner sun50i_64
-
-   -  Allwinner sun50i_h6
-
-   -  NXP QorIQ LS1043A
-
-   -  NXP i.MX8QX
-
-   -  NXP i.MX8QM
-
-   -  NXP i.MX7Solo WaRP7
-
-   -  TI K3
-
-   -  Socionext Synquacer SC2A11
-
-   -  Marvell Armada 8K
-
-   -  STMicroelectronics STM32MP1
-
--  Misc Generic Platform Common Code Enhancements
-
-   -  Add MMC framework that supports both eMMC and SD card devices
-
--  Misc Arm Platform Common Code Enhancements
-
-   -  Demonstrate PSCI MEM_PROTECT from el3_runtime
-
-   -  Provide RAS support
-
-   -  Migrate AArch64 port to the multi console driver. The old API is
-      deprecated and will eventually be removed.
-
-   -  Move BL31 below BL2 to enable BL2 overlay resulting in changes in the
-      layout of BL images in memory to enable more efficient use of available
-      space.
-
-   -  Add cpp build processing for dtb that allows processing device tree
-      with external includes.
-
-   -  Extend FIP io driver to support multiple FIP devices
-
-   -  Add support for SCMI AP core configuration protocol v1.0
-
-   -  Use SCMI AP core protocol to set the warm boot entrypoint
-
-   -  Add support to Mbed TLS drivers for shared heap among different
-      BL images to help optimise memory usage
-
-   -  Enable non-secure access to UART1 through a build option to support
-      a serial debug port for debugger connection
-
--  Enhancements for Arm Juno Platform
-
-   -  Add support for TrustZone Media Protection 1 (TZMP1)
-
--  Enhancements for Arm FVP Platform
-
-   -  Dynamic_config: remove the FVP dtb files
-
-   -  Set DYNAMIC_WORKAROUND_CVE_2018_3639=1 on FVP by default
-
-   -  Set the ability to dynamically disable Trusted Boot Board
-      authentication to be off by default with DYN_DISABLE_AUTH
-
-   -  Add librom enhancement support in FVP
-
-   -  Support shared Mbed TLS heap between BL1 and BL2 that allow a
-      reduction in BL2 size for FVP
-
--  Enhancements for Arm SGI/SGM Platform
-
-   -  Enable ARM_PLAT_MT flag for SGI-575
-
-   -  Add dts files to enable support for dynamic config
-
-   -  Add RAS support
-
-   -  Support shared Mbed TLS heap for SGI and SGM between BL1 and BL2
-
--  Enhancements for Non Arm Platforms
-
-   -  Raspberry Pi Platform
-
-   -  Hikey Platforms
-
-   -  Xilinx Platforms
-
-   -  QEMU Platform
-
-   -  Rockchip rk3399 Platform
-
-   -  TI Platforms
-
-   -  Socionext Platforms
-
-   -  Allwinner Platforms
-
-   -  NXP Platforms
-
-   -  NVIDIA Tegra Platform
-
-   -  Marvell Platforms
-
-   -  STMicroelectronics STM32MP1 Platform
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  No issues known at 1.5 release resolved in 1.6 release
-
-Known Issues
-^^^^^^^^^^^^
-
--  DTB creation not supported when building on a Windows host. This step in the
-   build process is skipped when running on a Windows host. Known issue from
-   1.5 version.
-
-Version 1.5
------------
-
-New features
-^^^^^^^^^^^^
-
--  Added new firmware support to enable RAS (Reliability, Availability, and
-   Serviceability) functionality.
-
-   -  Secure Partition Manager (SPM): A Secure Partition is a software execution
-      environment instantiated in S-EL0 that can be used to implement simple
-      management and security services. The SPM is the firmware component that
-      is responsible for managing a Secure Partition.
-
-   -  SDEI dispatcher: Support for interrupt-based |SDEI| events and all
-      interfaces as defined by the |SDEI| specification v1.0, see
-      `SDEI Specification`_
-
-   -  Exception Handling Framework (EHF): Framework that allows dispatching of
-      EL3 interrupts to their registered handlers which are registered based on
-      their priorities. Facilitates firmware-first error handling policy where
-      asynchronous exceptions may be routed to EL3.
-
-      Integrated the TSPD with EHF.
-
--  Updated PSCI support:
-
-   -  Implemented PSCI v1.1 optional features `MEM_PROTECT` and `SYSTEM_RESET2`.
-      The supported PSCI version was updated to v1.1.
-
-   -  Improved PSCI STAT timestamp collection, including moving accounting for
-      retention states to be inside the locks and fixing handling of wrap-around
-      when calculating residency in AArch32 execution state.
-
-   -  Added optional handler for early suspend that executes when suspending to
-      a power-down state and with data caches enabled.
-
-      This may provide a performance improvement on platforms where it is safe
-      to perform some or all of the platform actions from `pwr_domain_suspend`
-      with the data caches enabled.
-
--  Enabled build option, BL2_AT_EL3, for BL2 to allow execution at EL3 without
-   any dependency on TF BL1.
-
-   This allows platforms which already have a non-TF Boot ROM to directly load
-   and execute BL2 and subsequent BL stages without need for BL1. This was not
-   previously possible because BL2 executes at S-EL1 and cannot jump straight to
-   EL3.
-
--  Implemented support for SMCCC v1.1, including `SMCCC_VERSION` and
-   `SMCCC_ARCH_FEATURES`.
-
-   Additionally, added support for `SMCCC_VERSION` in PSCI features to enable
-   discovery of the SMCCC version via PSCI feature call.
-
--  Added Dynamic Configuration framework which enables each of the boot loader
-   stages to be dynamically configured at runtime if required by the platform.
-   The boot loader stage may optionally specify a firmware configuration file
-   and/or hardware configuration file that can then be shared with the next boot
-   loader stage.
-
-   Introduced a new BL handover interface that essentially allows passing of 4
-   arguments between the different BL stages.
-
-   Updated cert_create and fip_tool to support the dynamic configuration files.
-   The COT also updated to support these new files.
-
--  Code hygiene changes and alignment with MISRA guideline:
-
-   -  Fix use of undefined macros.
-
-   -  Achieved compliance with Mandatory MISRA coding rules.
-
-   -  Achieved compliance for following Required MISRA rules for the default
-      build configurations on FVP and Juno platforms : 7.3, 8.3, 8.4, 8.5 and
-      8.8.
-
--  Added support for Armv8.2-A architectural features:
-
-   -  Updated translation table set-up to set the CnP (Common not Private) bit
-      for secure page tables so that multiple PEs in the same Inner Shareable
-      domain can use the same translation table entries for a given stage of
-      translation in a particular translation regime.
-
-   -  Extended the supported values of ID_AA64MMFR0_EL1.PARange to include the
-      52-bit Physical Address range.
-
-   -  Added support for the Scalable Vector Extension to allow Normal world
-      software to access SVE functionality but disable access to SVE, SIMD and
-      floating point functionality from the Secure world in order to prevent
-      corruption of the Z-registers.
-
--  Added support for Armv8.4-A architectural feature Activity Monitor Unit (AMU)
-    extensions.
-
-   In addition to the v8.4 architectural extension, AMU support on Cortex-A75
-   was implemented.
-
--  Enhanced OP-TEE support to enable use of pageable OP-TEE image. The Arm
-   standard platforms are updated to load up to 3 images for OP-TEE; header,
-   pager image and paged image.
-
-   The chain of trust is extended to support the additional images.
-
--  Enhancements to the translation table library:
-
-   -  Introduced APIs to get and set the memory attributes of a region.
-
-   -  Added support to manage both privilege levels in translation regimes that
-      describe translations for 2 Exception levels, specifically the EL1&0
-      translation regime, and extended the memory map region attributes to
-      include specifying Non-privileged access.
-
-   -  Added support to specify the granularity of the mappings of each region,
-      for instance a 2MB region can be specified to be mapped with 4KB page
-      tables instead of a 2MB block.
-
-   -  Disabled the higher VA range to avoid unpredictable behaviour if there is
-      an attempt to access addresses in the higher VA range.
-
-   -  Added helpers for Device and Normal memory MAIR encodings that align with
-      the Arm Architecture Reference Manual for Armv8-A (Arm DDI0487B.b).
-
-   -  Code hygiene including fixing type length and signedness of constants,
-      refactoring of function to enable the MMU, removing all instances where
-      the virtual address space is hardcoded and added comments that document
-      alignment needed between memory attributes and attributes specified in
-      TCR_ELx.
-
--  Updated GIC support:
-
-   -  Introduce new APIs for GICv2 and GICv3 that provide the capability to
-      specify interrupt properties rather than list of interrupt numbers alone.
-      The Arm platforms and other upstream platforms are migrated to use
-      interrupt properties.
-
-   -  Added helpers to save / restore the GICv3 context, specifically the
-      Distributor and Redistributor contexts and architectural parts of the ITS
-      power management. The Distributor and Redistributor helpers also support
-      the implementation-defined part of GIC-500 and GIC-600.
-
-      Updated the Arm FVP platform to save / restore the GICv3 context on system
-      suspend / resume as an example of how to use the helpers.
-
-      Introduced a new TZC secured DDR carve-out for use by Arm platforms for
-      storing EL3 runtime data such as the GICv3 register context.
-
--  Added support for Armv7-A architecture via build option ARM_ARCH_MAJOR=7.
-   This includes following features:
-
-   -  Updates GICv2 driver to manage GICv1 with security extensions.
-
-   -  Software implementation for 32bit division.
-
-   -  Enabled use of generic timer for platforms that do not set
-      ARM_CORTEX_Ax=yes.
-
-   -  Support for Armv7-A Virtualization extensions [DDI0406C_C].
-
-   -  Support for both Armv7-A platforms that only have 32-bit addressing and
-      Armv7-A platforms that support large page addressing.
-
-   -  Included support for following Armv7 CPUs: Cortex-A12, Cortex-A17,
-      Cortex-A7, Cortex-A5, Cortex-A9, Cortex-A15.
-
-   -  Added support in QEMU for Armv7-A/Cortex-A15.
-
--  Enhancements to Firmware Update feature:
-
-   -  Updated the FWU documentation to describe the additional images needed for
-      Firmware update, and how they are used for both the Juno platform and the
-      Arm FVP platforms.
-
--  Enhancements to Trusted Board Boot feature:
-
-   -  Added support to cert_create tool for RSA PKCS1# v1.5 and SHA384, SHA512
-      and SHA256.
-
-   -  For Arm platforms added support to use ECDSA keys.
-
-   -  Enhanced the mbed TLS wrapper layer to include support for both RSA and
-      ECDSA to enable runtime selection between RSA and ECDSA keys.
-
--  Added support for secure interrupt handling in AArch32 sp_min, hardcoded to
-   only handle FIQs.
-
--  Added support to allow a platform to load images from multiple boot sources,
-   for example from a second flash drive.
-
--  Added a logging framework that allows platforms to reduce the logging level
-   at runtime and additionally the prefix string can be defined by the platform.
-
--  Further improvements to register initialisation:
-
-   -   Control register PMCR_EL0 / PMCR is set to prohibit cycle counting in the
-       secure world. This register is added to the list of registers that are
-       saved and restored during world switch.
-
-   -   When EL3 is running in AArch32 execution state, the Non-secure version of
-       SCTLR is explicitly initialised during the warmboot flow rather than
-       relying on the hardware to set the correct reset values.
-
--  Enhanced support for Arm platforms:
-
-   -  Introduced driver for Shared-Data-Structure (SDS) framework which is used
-      for communication between SCP and the AP CPU, replacing Boot-Over_MHU
-      (BOM) protocol.
-
-      The Juno platform is migrated to use SDS with the SCMI support added in
-      v1.3 and is set as default.
-
-      The driver can be found in the plat/arm/css/drivers folder.
-
-   -  Improved memory usage by only mapping TSP memory region when the TSPD has
-      been included in the build. This reduces the memory footprint and avoids
-      unnecessary memory being mapped.
-
-   -  Updated support for multi-threading CPUs for FVP platforms - always check
-      the MT field in MPDIR and access the bit fields accordingly.
-
-   -  Support building for platforms that model DynamIQ configuration by
-      implementing all CPUs in a single cluster.
-
-   -  Improved nor flash driver, for instance clearing status registers before
-      sending commands. Driver can be found plat/arm/board/common folder.
-
--  Enhancements to QEMU platform:
-
-   -  Added support for TBB.
-
-   -  Added support for using OP-TEE pageable image.
-
-   -  Added support for LOAD_IMAGE_V2.
-
-   -  Migrated to use translation table library v2 by default.
-
-   -  Added support for SEPARATE_CODE_AND_RODATA.
-
--  Applied workarounds CVE-2017-5715 on Arm Cortex-A57, -A72, -A73 and -A75, and
-   for Armv7-A CPUs Cortex-A9, -A15 and -A17.
-
--  Applied errata workaround for Arm Cortex-A57: 859972.
-
--  Applied errata workaround for Arm Cortex-A72: 859971.
-
--  Added support for Poplar 96Board platform.
-
--  Added support for Raspberry Pi 3 platform.
-
--  Added Call Frame Information (CFI) assembler directives to the vector entries
-   which enables debuggers to display the backtrace of functions that triggered
-   a synchronous abort.
-
--  Added ability to build dtb.
-
--  Added support for pre-tool (cert_create and fiptool) image processing
-   enabling compression of the image files before processing by cert_create and
-   fiptool.
-
-   This can reduce fip size and may also speed up loading of images.  The image
-   verification will also get faster because certificates are generated based on
-   compressed images.
-
-   Imported zlib 1.2.11 to implement gunzip() for data compression.
-
--  Enhancements to fiptool:
-
-   -  Enabled the fiptool to be built using Visual Studio.
-
-   -  Added padding bytes at the end of the last image in the fip to be
-      facilitate transfer by DMA.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  TF-A can be built with optimisations disabled (-O0).
-
--  Memory layout updated to enable Trusted Board Boot on Juno platform when
-   running TF-A in AArch32 execution mode (resolving `tf-issue#501`_).
-
-Known Issues
-^^^^^^^^^^^^
-
--  DTB creation not supported when building on a Windows host. This step in the
-   build process is skipped when running on a Windows host.
-
-Version 1.4
------------
-
-New features
-^^^^^^^^^^^^
-
--  Enabled support for platforms with hardware assisted coherency.
-
-   A new build option HW_ASSISTED_COHERENCY allows platforms to take advantage
-   of the following optimisations:
-
-   -  Skip performing cache maintenance during power-up and power-down.
-
-   -  Use spin-locks instead of bakery locks.
-
-   -  Enable data caches early on warm-booted CPUs.
-
--  Added support for Cortex-A75 and Cortex-A55 processors.
-
-   Both Cortex-A75 and Cortex-A55 processors use the Arm DynamIQ Shared Unit
-   (DSU). The power-down and power-up sequences are therefore mostly managed in
-   hardware, reducing complexity of the software operations.
-
--  Introduced Arm GIC-600 driver.
-
-   Arm GIC-600 IP complies with Arm GICv3 architecture. For FVP platforms, the
-   GIC-600 driver is chosen when FVP_USE_GIC_DRIVER is set to FVP_GIC600.
-
--  Updated GICv3 support:
-
-   -  Introduced power management APIs for GICv3 Redistributor. These APIs
-      allow platforms to power down the Redistributor during CPU power on/off.
-      Requires the GICv3 implementations to have power management operations.
-
-      Implemented the power management APIs for FVP.
-
-   -  GIC driver data is flushed by the primary CPU so that secondary CPU do
-      not read stale GIC data.
-
--  Added support for Arm System Control and Management Interface v1.0 (SCMI).
-
-   The SCMI driver implements the power domain management and system power
-   management protocol of the SCMI specification (Arm DEN 0056ASCMI) for
-   communicating with any compliant power controller.
-
-   Support is added for the Juno platform. The driver can be found in the
-   plat/arm/css/drivers folder.
-
--  Added support to enable pre-integration of TBB with the Arm TrustZone
-   CryptoCell product, to take advantage of its hardware Root of Trust and
-   crypto acceleration services.
-
--  Enabled Statistical Profiling Extensions for lower ELs.
-
-   The firmware support is limited to the use of SPE in the Non-secure state
-   and accesses to the SPE specific registers from S-EL1 will trap to EL3.
-
-   The SPE are architecturally specified for AArch64 only.
-
--  Code hygiene changes aligned with MISRA guidelines:
-
-   -  Fixed signed / unsigned comparison warnings in the translation table
-      library.
-
-   -  Added U(_x) macro and together with the existing ULL(_x) macro fixed
-      some of the signed-ness defects flagged by the MISRA scanner.
-
--  Enhancements to Firmware Update feature:
-
-   -  The FWU logic now checks for overlapping images to prevent execution of
-      unauthenticated arbitrary code.
-
-   -  Introduced new FWU_SMC_IMAGE_RESET SMC that changes the image loading
-      state machine to go from COPYING, COPIED or AUTHENTICATED states to
-      RESET state. Previously, this was only possible when the authentication
-      of an image failed or when the execution of the image finished.
-
-   -  Fixed integer overflow which addressed TFV-1: Malformed Firmware Update
-      SMC can result in copy of unexpectedly large data into secure memory.
-
--  Introduced support for Arm Compiler 6 and LLVM (clang).
-
-   TF-A can now also be built with the Arm Compiler 6 or the clang compilers.
-   The assembler and linker must be provided by the GNU toolchain.
-
-   Tested with Arm CC 6.7 and clang 3.9.x and 4.0.x.
-
--  Memory footprint improvements:
-
-   -  Introduced `tf_snprintf`, a reduced version of `snprintf` which has
-      support for a limited set of formats.
-
-      The mbedtls driver is updated to optionally use `tf_snprintf` instead of
-      `snprintf`.
-
-   -  The `assert()` is updated to no longer print the function name, and
-      additional logging options are supported via an optional platform define
-      `PLAT_LOG_LEVEL_ASSERT`, which controls how verbose the assert output is.
-
--  Enhancements to TF-A support when running in AArch32 execution state:
-
-   -  Support booting SP_MIN and BL33 in AArch32 execution mode on Juno. Due to
-      hardware limitations, BL1 and BL2 boot in AArch64 state and there is
-      additional trampoline code to warm reset into SP_MIN in AArch32 execution
-      state.
-
-   -  Added support for Arm Cortex-A53/57/72 MPCore processors including the
-      errata workarounds that are already implemented for AArch64 execution
-      state.
-
-   -  For FVP platforms, added AArch32 Trusted Board Boot support, including the
-      Firmware Update feature.
-
--  Introduced Arm SiP service for use by Arm standard platforms.
-
-   -  Added new Arm SiP Service SMCs to enable the Non-secure  world to read PMF
-      timestamps.
-
-      Added PMF instrumentation points in TF-A in order to quantify the
-      overall time spent in the PSCI software implementation.
-
-   -  Added new Arm SiP service SMC to switch execution state.
-
-      This allows the lower exception level to change its execution state from
-      AArch64 to AArch32, or vice verse, via a request to EL3.
-
--  Migrated to use SPDX[0] license identifiers to make software license
-   auditing simpler.
-
-   .. note::
-      Files that have been imported by FreeBSD have not been modified.
-
-   [0]: https://spdx.org/
-
--  Enhancements to the translation table library:
-
-   -  Added version 2 of translation table library that allows different
-      translation tables to be modified by using different 'contexts'. Version 1
-      of the translation table library only allows the current EL's translation
-      tables to be modified.
-
-      Version 2 of the translation table also added support for dynamic
-      regions; regions that can be added and removed dynamically whilst the
-      MMU is enabled. Static regions can only be added or removed before the
-      MMU is enabled.
-
-      The dynamic mapping functionality is enabled or disabled when compiling
-      by setting the build option PLAT_XLAT_TABLES_DYNAMIC to 1 or 0. This can
-      be done per-image.
-
-   -  Added support for translation regimes with two virtual address spaces
-      such as the one shared by EL1 and EL0.
-
-      The library does not support initializing translation tables for EL0
-      software.
-
-   -  Added support to mark the translation tables as non-cacheable using an
-      additional build option `XLAT_TABLE_NC`.
-
--  Added support for GCC stack protection. A new build option
-   ENABLE_STACK_PROTECTOR was introduced that enables compilation of all BL
-   images with one of the GCC -fstack-protector-* options.
-
-   A new platform function plat_get_stack_protector_canary() was introduced
-   that returns a value used to initialize the canary for stack corruption
-   detection. For increased effectiveness of protection platforms must provide
-   an implementation that returns a random value.
-
--  Enhanced support for Arm platforms:
-
-   -  Added support for multi-threading CPUs, indicated by `MT` field in MPDIR.
-      A new build flag `ARM_PLAT_MT` is added, and when enabled, the functions
-      accessing MPIDR assume that the `MT` bit is set for the platform and
-      access the bit fields accordingly.
-
-      Also, a new API `plat_arm_get_cpu_pe_count` is added when `ARM_PLAT_MT` is
-      enabled, returning the Processing Element count within the physical CPU
-      corresponding to `mpidr`.
-
-   -  The Arm platforms migrated to use version 2 of the translation tables.
-
-   -  Introduced a new Arm platform layer API `plat_arm_psci_override_pm_ops`
-      which allows Arm platforms to modify `plat_arm_psci_pm_ops` and therefore
-      dynamically define PSCI capability.
-
-   -  The Arm platforms migrated to use IMAGE_LOAD_V2 by default.
-
--  Enhanced reporting of errata workaround status with the following policy:
-
-   -  If an errata workaround is enabled:
-
-      -  If it applies (i.e. the CPU is affected by the errata), an INFO message
-         is printed, confirming that the errata workaround has been applied.
-
-      -  If it does not apply, a VERBOSE message is printed, confirming that the
-         errata workaround has been skipped.
-
-   -  If an errata workaround is not enabled, but would have applied had it
-      been, a WARN message is printed, alerting that errata workaround is
-      missing.
-
--  Added build options ARM_ARCH_MAJOR and ARM_ARM_MINOR to choose the
-   architecture version to target TF-A.
-
--  Updated the spin lock implementation to use the more efficient CAS (Compare
-   And Swap) instruction when available. This instruction was introduced in
-   Armv8.1-A.
-
--  Applied errata workaround for Arm Cortex-A53: 855873.
-
--  Applied errata workaround for Arm-Cortex-A57: 813419.
-
--  Enabled all A53 and A57 errata workarounds for Juno, both in AArch64 and
-   AArch32 execution states.
-
--  Added support for Socionext UniPhier SoC platform.
-
--  Added support for Hikey960 and Hikey platforms.
-
--  Added support for Rockchip RK3328 platform.
-
--  Added support for NVidia Tegra T186 platform.
-
--  Added support for Designware emmc driver.
-
--  Imported libfdt v1.4.2 that addresses buffer overflow in fdt_offset_ptr().
-
--  Enhanced the CPU operations framework to allow power handlers to be
-   registered on per-level basis. This enables support for future CPUs that
-   have multiple threads which might need powering down individually.
-
--  Updated register initialisation to prevent unexpected behaviour:
-
-   -  Debug registers MDCR-EL3/SDCR and MDCR_EL2/HDCR are initialised to avoid
-      unexpected traps into the higher exception levels and disable secure
-      self-hosted debug. Additionally, secure privileged external debug on
-      Juno is disabled by programming the appropriate Juno SoC registers.
-
-   -  EL2 and EL3 configurable controls are initialised to avoid unexpected
-      traps in the higher exception levels.
-
-   -  Essential control registers are fully initialised on EL3 start-up, when
-      initialising the non-secure and secure context structures and when
-      preparing to leave EL3 for a lower EL. This gives better alignment with
-      the Arm ARM which states that software must initialise RES0 and RES1
-      fields with 0 / 1.
-
--  Enhanced PSCI support:
-
-   -  Introduced new platform interfaces that decouple PSCI stat residency
-      calculation from PMF, enabling platforms to use alternative methods of
-      capturing timestamps.
-
-   -  PSCI stat accounting performed for retention/standby states when
-      requested at multiple power levels.
-
--  Simplified fiptool to have a single linked list of image descriptors.
-
--  For the TSP, resolved corruption of pre-empted secure context by aborting any
-   pre-empted SMC during PSCI power management requests.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  TF-A can be built with the latest mbed TLS version (v2.4.2). The earlier
-   version 2.3.0 cannot be used due to build warnings that the TF-A build
-   system interprets as errors.
-
--  TBBR, including the Firmware Update feature  is now supported on FVP
-   platforms when running TF-A in AArch32 state.
-
--  The version of the AEMv8 Base FVP used in this release has resolved the issue
-   of the model executing a reset instead of terminating in response to a
-   shutdown request using the PSCI SYSTEM_OFF API.
-
-Known Issues
-^^^^^^^^^^^^
-
--  Building TF-A with compiler optimisations disabled (-O0) fails.
-
--  Trusted Board Boot currently does not work on Juno when running Trusted
-   Firmware in AArch32 execution state due to error when loading the sp_min to
-   memory because of lack of free space available. See `tf-issue#501`_ for more
-   details.
-
--  The errata workaround for A53 errata 843419 is only available from binutils
-   2.26 and is not present in GCC4.9. If this errata is applicable to the
-   platform, please use GCC compiler version of at least 5.0. See `PR#1002`_ for
-   more details.
-
-Version 1.3
------------
-
-
-New features
-^^^^^^^^^^^^
-
--  Added support for running TF-A in AArch32 execution state.
-
-   The PSCI library has been refactored to allow integration with **EL3 Runtime
-   Software**. This is software that is executing at the highest secure
-   privilege which is EL3 in AArch64 or Secure SVC/Monitor mode in AArch32. See
-   :ref:`PSCI Library Integration guide for Armv8-A AArch32 systems`.
-
-   Included is a minimal AArch32 Secure Payload, **SP-MIN**, that illustrates
-   the usage and integration of the PSCI library with EL3 Runtime Software
-   running in AArch32 state.
-
-   Booting to the BL1/BL2 images as well as booting straight to the Secure
-   Payload is supported.
-
--  Improvements to the initialization framework for the PSCI service and Arm
-   Standard Services in general.
-
-   The PSCI service is now initialized as part of Arm Standard Service
-   initialization. This consolidates the initializations of any Arm Standard
-   Service that may be added in the future.
-
-   A new function ``get_arm_std_svc_args()`` is introduced to get arguments
-   corresponding to each standard service and must be implemented by the EL3
-   Runtime Software.
-
-   For PSCI, a new versioned structure ``psci_lib_args_t`` is introduced to
-   initialize the PSCI Library. **Note** this is a compatibility break due to
-   the change in the prototype of ``psci_setup()``.
-
--  To support AArch32 builds of BL1 and BL2, implemented a new, alternative
-   firmware image loading mechanism that adds flexibility.
-
-   The current mechanism has a hard-coded set of images and execution order
-   (BL31, BL32, etc). The new mechanism is data-driven by a list of image
-   descriptors provided by the platform code.
-
-   Arm platforms have been updated to support the new loading mechanism.
-
-   The new mechanism is enabled by a build flag (``LOAD_IMAGE_V2``) which is
-   currently off by default for the AArch64 build.
-
-   **Note** ``TRUSTED_BOARD_BOOT`` is currently not supported when
-   ``LOAD_IMAGE_V2`` is enabled.
-
--  Updated requirements for making contributions to TF-A.
-
-   Commits now must have a 'Signed-off-by:' field to certify that the
-   contribution has been made under the terms of the
-   :download:`Developer Certificate of Origin <../dco.txt>`.
-
-   A signed CLA is no longer required.
-
-   The :ref:`Contributor's Guide` has been updated to reflect this change.
-
--  Introduced Performance Measurement Framework (PMF) which provides support
-   for capturing, storing, dumping and retrieving time-stamps to measure the
-   execution time of critical paths in the firmware. This relies on defining
-   fixed sample points at key places in the code.
-
--  To support the QEMU platform port, imported libfdt v1.4.1 from
-   https://git.kernel.org/pub/scm/utils/dtc/dtc.git
-
--  Updated PSCI support:
-
-   -  Added support for PSCI NODE_HW_STATE API for Arm platforms.
-
-   -  New optional platform hook, ``pwr_domain_pwr_down_wfi()``, in
-      ``plat_psci_ops`` to enable platforms to perform platform-specific actions
-      needed to enter powerdown, including the 'wfi' invocation.
-
-   -  PSCI STAT residency and count functions have been added on Arm platforms
-      by using PMF.
-
--  Enhancements to the translation table library:
-
-   -  Limited memory mapping support for region overlaps to only allow regions
-      to overlap that are identity mapped or have the same virtual to physical
-      address offset, and overlap completely but must not cover the same area.
-
-      This limitation will enable future enhancements without having to
-      support complex edge cases that may not be necessary.
-
-   -  The initial translation lookup level is now inferred from the virtual
-      address space size. Previously, it was hard-coded.
-
-   -  Added support for mapping Normal, Inner Non-cacheable, Outer
-      Non-cacheable memory in the translation table library.
-
-      This can be useful to map a non-cacheable memory region, such as a DMA
-      buffer.
-
-   -  Introduced the MT_EXECUTE/MT_EXECUTE_NEVER memory mapping attributes to
-      specify the access permissions for instruction execution of a memory
-      region.
-
--  Enabled support to isolate code and read-only data on separate memory pages,
-   allowing independent access control to be applied to each.
-
--  Enabled SCR_EL3.SIF (Secure Instruction Fetch) bit in BL1 and BL31 common
-   architectural setup code, preventing fetching instructions from non-secure
-   memory when in secure state.
-
--  Enhancements to FIP support:
-
-   -  Replaced ``fip_create`` with ``fiptool`` which provides a more consistent
-      and intuitive interface as well as additional support to remove an image
-      from a FIP file.
-
-   -  Enabled printing the SHA256 digest with info command, allowing quick
-      verification of an image within a FIP without having to extract the
-      image and running sha256sum on it.
-
-   -  Added support for unpacking the contents of an existing FIP file into
-      the working directory.
-
-   -  Aligned command line options for specifying images to use same naming
-      convention as specified by TBBR and already used in cert_create tool.
-
--  Refactored the TZC-400 driver to also support memory controllers that
-   integrate TZC functionality, for example Arm CoreLink DMC-500. Also added
-   DMC-500 specific support.
-
--  Implemented generic delay timer based on the system generic counter and
-   migrated all platforms to use it.
-
--  Enhanced support for Arm platforms:
-
-   -  Updated image loading support to make SCP images (SCP_BL2 and SCP_BL2U)
-      optional.
-
-   -  Enhanced topology description support to allow multi-cluster topology
-      definitions.
-
-   -  Added interconnect abstraction layer to help platform ports select the
-      right interconnect driver, CCI or CCN, for the platform.
-
-   -  Added support to allow loading BL31 in the TZC-secured DRAM instead of
-      the default secure SRAM.
-
-   -  Added support to use a System Security Control (SSC) Registers Unit
-      enabling TF-A to be compiled to support multiple Arm platforms and
-      then select one at runtime.
-
-   -  Restricted mapping of Trusted ROM in BL1 to what is actually needed by
-      BL1 rather than entire Trusted ROM region.
-
-   -  Flash is now mapped as execute-never by default. This increases security
-      by restricting the executable region to what is strictly needed.
-
--  Applied following erratum workarounds for Cortex-A57: 833471, 826977,
-   829520, 828024 and 826974.
-
--  Added support for Mediatek MT6795 platform.
-
--  Added support for QEMU virtualization Armv8-A target.
-
--  Added support for Rockchip RK3368 and RK3399 platforms.
-
--  Added support for Xilinx Zynq UltraScale+ MPSoC platform.
-
--  Added support for Arm Cortex-A73 MPCore Processor.
-
--  Added support for Arm Cortex-A72 processor.
-
--  Added support for Arm Cortex-A35 processor.
-
--  Added support for Arm Cortex-A32 MPCore Processor.
-
--  Enabled preloaded BL33 alternative boot flow, in which BL2 does not load
-   BL33 from non-volatile storage and BL31 hands execution over to a preloaded
-   BL33. The User Guide has been updated with an example of how to use this
-   option with a bootwrapped kernel.
-
--  Added support to build TF-A on a Windows-based host machine.
-
--  Updated Trusted Board Boot prototype implementation:
-
-   -  Enabled the ability for a production ROM with TBBR enabled to boot test
-      software before a real ROTPK is deployed (e.g. manufacturing mode).
-      Added support to use ROTPK in certificate without verifying against the
-      platform value when ``ROTPK_NOT_DEPLOYED`` bit is set.
-
-   -  Added support for non-volatile counter authentication to the
-      Authentication Module to protect against roll-back.
-
--  Updated GICv3 support:
-
-   -  Enabled processor power-down and automatic power-on using GICv3.
-
-   -  Enabled G1S or G0 interrupts to be configured independently.
-
-   -  Changed FVP default interrupt driver to be the GICv3-only driver.
-      **Note** the default build of TF-A will not be able to boot
-      Linux kernel with GICv2 FDT blob.
-
-   -  Enabled wake-up from CPU_SUSPEND to stand-by by temporarily re-routing
-      interrupts and then restoring after resume.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Known issues
-^^^^^^^^^^^^
-
--  The version of the AEMv8 Base FVP used in this release resets the model
-   instead of terminating its execution in response to a shutdown request using
-   the PSCI ``SYSTEM_OFF`` API. This issue will be fixed in a future version of
-   the model.
-
--  Building TF-A with compiler optimisations disabled (``-O0``) fails.
-
--  TF-A cannot be built with mbed TLS version v2.3.0 due to build warnings
-   that the TF-A build system interprets as errors.
-
--  TBBR is not currently supported when running TF-A in AArch32 state.
-
-Version 1.2
------------
-
-New features
-^^^^^^^^^^^^
-
--  The Trusted Board Boot implementation on Arm platforms now conforms to the
-   mandatory requirements of the TBBR specification.
-
-   In particular, the boot process is now guarded by a Trusted Watchdog, which
-   will reset the system in case of an authentication or loading error. On Arm
-   platforms, a secure instance of Arm SP805 is used as the Trusted Watchdog.
-
-   Also, a firmware update process has been implemented. It enables
-   authenticated firmware to update firmware images from external interfaces to
-   SoC Non-Volatile memories. This feature functions even when the current
-   firmware in the system is corrupt or missing; it therefore may be used as
-   a recovery mode.
-
--  Improvements have been made to the Certificate Generation Tool
-   (``cert_create``) as follows.
-
-   -  Added support for the Firmware Update process by extending the Chain
-      of Trust definition in the tool to include the Firmware Update
-      certificate and the required extensions.
-
-   -  Introduced a new API that allows one to specify command line options in
-      the Chain of Trust description. This makes the declaration of the tool's
-      arguments more flexible and easier to extend.
-
-   -  The tool has been reworked to follow a data driven approach, which
-      makes it easier to maintain and extend.
-
--  Extended the FIP tool (``fip_create``) to support the new set of images
-   involved in the Firmware Update process.
-
--  Various memory footprint improvements. In particular:
-
-   -  The bakery lock structure for coherent memory has been optimised.
-
-   -  The mbed TLS SHA1 functions are not needed, as SHA256 is used to
-      generate the certificate signature. Therefore, they have been compiled
-      out, reducing the memory footprint of BL1 and BL2 by approximately
-      6 KB.
-
-   -  On Arm development platforms, each BL stage now individually defines
-      the number of regions that it needs to map in the MMU.
-
--  Added the following new design documents:
-
-   -  :ref:`Authentication Framework & Chain of Trust`
-   -  :ref:`Firmware Update (FWU)`
-   -  :ref:`CPU Reset`
-   -  :ref:`PSCI Power Domain Tree Structure`
-
--  Applied the new image terminology to the code base and documentation, as
-   described in the :ref:`Image Terminology` document.
-
--  The build system has been reworked to improve readability and facilitate
-   adding future extensions.
-
--  On Arm standard platforms, BL31 uses the boot console during cold boot
-   but switches to the runtime console for any later logs at runtime. The TSP
-   uses the runtime console for all output.
-
--  Implemented a basic NOR flash driver for Arm platforms. It programs the
-   device using CFI (Common Flash Interface) standard commands.
-
--  Implemented support for booting EL3 payloads on Arm platforms, which
-   reduces the complexity of developing EL3 baremetal code by doing essential
-   baremetal initialization.
-
--  Provided separate drivers for GICv3 and GICv2. These expect the entire
-   software stack to use either GICv2 or GICv3; hybrid GIC software systems
-   are no longer supported and the legacy Arm GIC driver has been deprecated.
-
--  Added support for Juno r1 and r2. A single set of Juno TF-A binaries can run
-   on Juno r0, r1 and r2 boards. Note that this TF-A version depends on a Linaro
-   release that does *not* contain Juno r2 support.
-
--  Added support for MediaTek mt8173 platform.
-
--  Implemented a generic driver for Arm CCN IP.
-
--  Major rework of the PSCI implementation.
-
-   -  Added framework to handle composite power states.
-
-   -  Decoupled the notions of affinity instances (which describes the
-      hierarchical arrangement of cores) and of power domain topology, instead
-      of assuming a one-to-one mapping.
-
-   -  Better alignment with version 1.0 of the PSCI specification.
-
--  Added support for the SYSTEM_SUSPEND PSCI API on Arm platforms. When invoked
-   on the last running core on a supported platform, this puts the system
-   into a low power mode with memory retention.
-
--  Unified the reset handling code as much as possible across BL stages.
-   Also introduced some build options to enable optimization of the reset path
-   on platforms that support it.
-
--  Added a simple delay timer API, as well as an SP804 timer driver, which is
-   enabled on FVP.
-
--  Added support for NVidia Tegra T210 and T132 SoCs.
-
--  Reorganised Arm platforms ports to greatly improve code shareability and
-   facilitate the reuse of some of this code by other platforms.
-
--  Added support for Arm Cortex-A72 processor in the CPU specific framework.
-
--  Provided better error handling. Platform ports can now define their own
-   error handling, for example to perform platform specific bookkeeping or
-   post-error actions.
-
--  Implemented a unified driver for Arm Cache Coherent Interconnects used for
-   both CCI-400 & CCI-500 IPs. Arm platforms ports have been migrated to this
-   common driver. The standalone CCI-400 driver has been deprecated.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  The Trusted Board Boot implementation has been redesigned to provide greater
-   modularity and scalability. See the
-   :ref:`Authentication Framework & Chain of Trust` document.
-   All missing mandatory features are now implemented.
-
--  The FVP and Juno ports may now use the hash of the ROTPK stored in the
-   Trusted Key Storage registers to verify the ROTPK. Alternatively, a
-   development public key hash embedded in the BL1 and BL2 binaries might be
-   used instead. The location of the ROTPK is chosen at build-time using the
-   ``ARM_ROTPK_LOCATION`` build option.
-
--  GICv3 is now fully supported and stable.
-
-Known issues
-^^^^^^^^^^^^
-
--  The version of the AEMv8 Base FVP used in this release resets the model
-   instead of terminating its execution in response to a shutdown request using
-   the PSCI ``SYSTEM_OFF`` API. This issue will be fixed in a future version of
-   the model.
-
--  While this version has low on-chip RAM requirements, there are further
-   RAM usage enhancements that could be made.
-
--  The upstream documentation could be improved for structural consistency,
-   clarity and completeness. In particular, the design documentation is
-   incomplete for PSCI, the TSP(D) and the Juno platform.
-
--  Building TF-A with compiler optimisations disabled (``-O0``) fails.
-
-Version 1.1
------------
-
-New features
-^^^^^^^^^^^^
-
--  A prototype implementation of Trusted Board Boot has been added. Boot
-   loader images are verified by BL1 and BL2 during the cold boot path. BL1 and
-   BL2 use the PolarSSL SSL library to verify certificates and images. The
-   OpenSSL library is used to create the X.509 certificates. Support has been
-   added to ``fip_create`` tool to package the certificates in a FIP.
-
--  Support for calling CPU and platform specific reset handlers upon entry into
-   BL3-1 during the cold and warm boot paths has been added. This happens after
-   another Boot ROM ``reset_handler()`` has already run. This enables a developer
-   to perform additional actions or undo actions already performed during the
-   first call of the reset handlers e.g. apply additional errata workarounds.
-
--  Support has been added to demonstrate routing of IRQs to EL3 instead of
-   S-EL1 when execution is in secure world.
-
--  The PSCI implementation now conforms to version 1.0 of the PSCI
-   specification. All the mandatory APIs and selected optional APIs are
-   supported. In particular, support for the ``PSCI_FEATURES`` API has been
-   added. A capability variable is constructed during initialization by
-   examining the ``plat_pm_ops`` and ``spd_pm_ops`` exported by the platform and
-   the Secure Payload Dispatcher. This is used by the PSCI FEATURES function
-   to determine which PSCI APIs are supported by the platform.
-
--  Improvements have been made to the PSCI code as follows.
-
-   -  The code has been refactored to remove redundant parameters from
-      internal functions.
-
-   -  Changes have been made to the code for PSCI ``CPU_SUSPEND``, ``CPU_ON`` and
-      ``CPU_OFF`` calls to facilitate an early return to the caller in case a
-      failure condition is detected. For example, a PSCI ``CPU_SUSPEND`` call
-      returns ``SUCCESS`` to the caller if a pending interrupt is detected early
-      in the code path.
-
-   -  Optional platform APIs have been added to validate the ``power_state`` and
-      ``entrypoint`` parameters early in PSCI ``CPU_ON`` and ``CPU_SUSPEND`` code
-      paths.
-
-   -  PSCI migrate APIs have been reworked to invoke the SPD hook to determine
-      the type of Trusted OS and the CPU it is resident on (if
-      applicable). Also, during a PSCI ``MIGRATE`` call, the SPD hook to migrate
-      the Trusted OS is invoked.
-
--  It is now possible to build TF-A without marking at least an extra page of
-   memory as coherent. The build flag ``USE_COHERENT_MEM`` can be used to
-   choose between the two implementations. This has been made possible through
-   these changes.
-
-   -  An implementation of Bakery locks, where the locks are not allocated in
-      coherent memory has been added.
-
-   -  Memory which was previously marked as coherent is now kept coherent
-      through the use of software cache maintenance operations.
-
-   Approximately, 4K worth of memory is saved for each boot loader stage when
-   ``USE_COHERENT_MEM=0``. Enabling this option increases the latencies
-   associated with acquire and release of locks. It also requires changes to
-   the platform ports.
-
--  It is now possible to specify the name of the FIP at build time by defining
-   the ``FIP_NAME`` variable.
-
--  Issues with dependencies on the 'fiptool' makefile target have been
-   rectified. The ``fip_create`` tool is now rebuilt whenever its source files
-   change.
-
--  The BL3-1 runtime console is now also used as the crash console. The crash
-   console is changed to SoC UART0 (UART2) from the previous FPGA UART0 (UART0)
-   on Juno. In FVP, it is changed from UART0 to UART1.
-
--  CPU errata workarounds are applied only when the revision and part number
-   match. This behaviour has been made consistent across the debug and release
-   builds. The debug build additionally prints a warning if a mismatch is
-   detected.
-
--  It is now possible to issue cache maintenance operations by set/way for a
-   particular level of data cache. Levels 1-3 are currently supported.
-
--  The following improvements have been made to the FVP port.
-
-   -  The build option ``FVP_SHARED_DATA_LOCATION`` which allowed relocation of
-      shared data into the Trusted DRAM has been deprecated. Shared data is
-      now always located at the base of Trusted SRAM.
-
-   -  BL2 Translation tables have been updated to map only the region of
-      DRAM which is accessible to normal world. This is the region of the 2GB
-      DDR-DRAM memory at 0x80000000 excluding the top 16MB. The top 16MB is
-      accessible to only the secure world.
-
-   -  BL3-2 can now reside in the top 16MB of DRAM which is accessible only to
-      the secure world. This can be done by setting the build flag
-      ``FVP_TSP_RAM_LOCATION`` to the value ``dram``.
-
--  Separate translation tables are created for each boot loader image. The
-   ``IMAGE_BLx`` build options are used to do this. This allows each stage to
-   create mappings only for areas in the memory map that it needs.
-
--  A Secure Payload Dispatcher (OPTEED) for the OP-TEE Trusted OS has been
-   added. Details of using it with TF-A can be found in :ref:`OP-TEE Dispatcher`
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  The Juno port has been aligned with the FVP port as follows.
-
-   -  Support for reclaiming all BL1 RW memory and BL2 memory by overlaying
-      the BL3-1/BL3-2 NOBITS sections on top of them has been added to the
-      Juno port.
-
-   -  The top 16MB of the 2GB DDR-DRAM memory at 0x80000000 is configured
-      using the TZC-400 controller to be accessible only to the secure world.
-
-   -  The Arm GIC driver is used to configure the GIC-400 instead of using a
-      GIC driver private to the Juno port.
-
-   -  PSCI ``CPU_SUSPEND`` calls that target a standby state are now supported.
-
-   -  The TZC-400 driver is used to configure the controller instead of direct
-      accesses to the registers.
-
--  The Linux kernel version referred to in the user guide has DVFS and HMP
-   support enabled.
-
--  DS-5 v5.19 did not detect Version 5.8 of the Cortex-A57-A53 Base FVPs in
-   CADI server mode. This issue is not seen with DS-5 v5.20 and Version 6.2 of
-   the Cortex-A57-A53 Base FVPs.
-
-Known issues
-^^^^^^^^^^^^
-
--  The Trusted Board Boot implementation is a prototype. There are issues with
-   the modularity and scalability of the design. Support for a Trusted
-   Watchdog, firmware update mechanism, recovery images and Trusted debug is
-   absent. These issues will be addressed in future releases.
-
--  The FVP and Juno ports do not use the hash of the ROTPK stored in the
-   Trusted Key Storage registers to verify the ROTPK in the
-   ``plat_match_rotpk()`` function. This prevents the correct establishment of
-   the Chain of Trust at the first step in the Trusted Board Boot process.
-
--  The version of the AEMv8 Base FVP used in this release resets the model
-   instead of terminating its execution in response to a shutdown request using
-   the PSCI ``SYSTEM_OFF`` API. This issue will be fixed in a future version of
-   the model.
-
--  GICv3 support is experimental. There are known issues with GICv3
-   initialization in the TF-A.
-
--  While this version greatly reduces the on-chip RAM requirements, there are
-   further RAM usage enhancements that could be made.
-
--  The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
-   its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
-
--  The Juno-specific firmware design documentation is incomplete.
-
-Version 1.0
------------
-
-New features
-^^^^^^^^^^^^
-
--  It is now possible to map higher physical addresses using non-flat virtual
-   to physical address mappings in the MMU setup.
-
--  Wider use is now made of the per-CPU data cache in BL3-1 to store:
-
-   -  Pointers to the non-secure and secure security state contexts.
-
-   -  A pointer to the CPU-specific operations.
-
-   -  A pointer to PSCI specific information (for example the current power
-      state).
-
-   -  A crash reporting buffer.
-
--  The following RAM usage improvements result in a BL3-1 RAM usage reduction
-   from 96KB to 56KB (for FVP with TSPD), and a total RAM usage reduction
-   across all images from 208KB to 88KB, compared to the previous release.
-
-   -  Removed the separate ``early_exception`` vectors from BL3-1 (2KB code size
-      saving).
-
-   -  Removed NSRAM from the FVP memory map, allowing the removal of one
-      (4KB) translation table.
-
-   -  Eliminated the internal ``psci_suspend_context`` array, saving 2KB.
-
-   -  Correctly dimensioned the PSCI ``aff_map_node`` array, saving 1.5KB in the
-      FVP port.
-
-   -  Removed calling CPU mpidr from the bakery lock API, saving 160 bytes.
-
-   -  Removed current CPU mpidr from PSCI common code, saving 160 bytes.
-
-   -  Inlined the mmio accessor functions, saving 360 bytes.
-
-   -  Fully reclaimed all BL1 RW memory and BL2 memory on the FVP port by
-      overlaying the BL3-1/BL3-2 NOBITS sections on top of these at runtime.
-
-   -  Made storing the FP register context optional, saving 0.5KB per context
-      (8KB on the FVP port, with TSPD enabled and running on 8 CPUs).
-
-   -  Implemented a leaner ``tf_printf()`` function, allowing the stack to be
-      greatly reduced.
-
-   -  Removed coherent stacks from the codebase. Stacks allocated in normal
-      memory are now used before and after the MMU is enabled. This saves 768
-      bytes per CPU in BL3-1.
-
-   -  Reworked the crash reporting in BL3-1 to use less stack.
-
-   -  Optimized the EL3 register state stored in the ``cpu_context`` structure
-      so that registers that do not change during normal execution are
-      re-initialized each time during cold/warm boot, rather than restored
-      from memory. This saves about 1.2KB.
-
-   -  As a result of some of the above, reduced the runtime stack size in all
-      BL images. For BL3-1, this saves 1KB per CPU.
-
--  PSCI SMC handler improvements to correctly handle calls from secure states
-   and from AArch32.
-
--  CPU contexts are now initialized from the ``entry_point_info``. BL3-1 fully
-   determines the exception level to use for the non-trusted firmware (BL3-3)
-   based on the SPSR value provided by the BL2 platform code (or otherwise
-   provided to BL3-1). This allows platform code to directly run non-trusted
-   firmware payloads at either EL2 or EL1 without requiring an EL2 stub or OS
-   loader.
-
--  Code refactoring improvements:
-
-   -  Refactored ``fvp_config`` into a common platform header.
-
-   -  Refactored the fvp gic code to be a generic driver that no longer has an
-      explicit dependency on platform code.
-
-   -  Refactored the CCI-400 driver to not have dependency on platform code.
-
-   -  Simplified the IO driver so it's no longer necessary to call ``io_init()``
-      and moved all the IO storage framework code to one place.
-
-   -  Simplified the interface the the TZC-400 driver.
-
-   -  Clarified the platform porting interface to the TSP.
-
-   -  Reworked the TSPD setup code to support the alternate BL3-2
-      initialization flow where BL3-1 generic code hands control to BL3-2,
-      rather than expecting the TSPD to hand control directly to BL3-2.
-
-   -  Considerable rework to PSCI generic code to support CPU specific
-      operations.
-
--  Improved console log output, by:
-
-   -  Adding the concept of debug log levels.
-
-   -  Rationalizing the existing debug messages and adding new ones.
-
-   -  Printing out the version of each BL stage at runtime.
-
-   -  Adding support for printing console output from assembler code,
-      including when a crash occurs before the C runtime is initialized.
-
--  Moved up to the latest versions of the FVPs, toolchain, EDK2, kernel, Linaro
-   file system and DS-5.
-
--  On the FVP port, made the use of the Trusted DRAM region optional at build
-   time (off by default). Normal platforms will not have such a "ready-to-use"
-   DRAM area so it is not a good example to use it.
-
--  Added support for PSCI ``SYSTEM_OFF`` and ``SYSTEM_RESET`` APIs.
-
--  Added support for CPU specific reset sequences, power down sequences and
-   register dumping during crash reporting. The CPU specific reset sequences
-   include support for errata workarounds.
-
--  Merged the Juno port into the master branch. Added support for CPU hotplug
-   and CPU idle. Updated the user guide to describe how to build and run on the
-   Juno platform.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  Removed the concept of top/bottom image loading. The image loader now
-   automatically detects the position of the image inside the current memory
-   layout and updates the layout to minimize fragmentation. This resolves the
-   image loader limitations of previously releases. There are currently no
-   plans to support dynamic image loading.
-
--  CPU idle now works on the publicized version of the Foundation FVP.
-
--  All known issues relating to the compiler version used have now been
-   resolved. This TF-A version uses Linaro toolchain 14.07 (based on GCC 4.9).
-
-Known issues
-^^^^^^^^^^^^
-
--  GICv3 support is experimental. The Linux kernel patches to support this are
-   not widely available. There are known issues with GICv3 initialization in
-   the TF-A.
-
--  While this version greatly reduces the on-chip RAM requirements, there are
-   further RAM usage enhancements that could be made.
-
--  The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
-   its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
-
--  The Juno-specific firmware design documentation is incomplete.
-
--  Some recent enhancements to the FVP port have not yet been translated into
-   the Juno port. These will be tracked via the tf-issues project.
-
--  The Linux kernel version referred to in the user guide has DVFS and HMP
-   support disabled due to some known instabilities at the time of this
-   release. A future kernel version will re-enable these features.
-
--  DS-5 v5.19 does not detect Version 5.8 of the Cortex-A57-A53 Base FVPs in
-   CADI server mode. This is because the ``<SimName>`` reported by the FVP in
-   this version has changed. For example, for the Cortex-A57x4-A53x4 Base FVP,
-   the ``<SimName>`` reported by the FVP is ``FVP_Base_Cortex_A57x4_A53x4``, while
-   DS-5 expects it to be ``FVP_Base_A57x4_A53x4``.
-
-   The temporary fix to this problem is to change the name of the FVP in
-   ``sw/debugger/configdb/Boards/ARM FVP/Base_A57x4_A53x4/cadi_config.xml``.
-   Change the following line:
-
-   ::
-
-       <SimName>System Generator:FVP_Base_A57x4_A53x4</SimName>
-
-   to
-   System Generator:FVP_Base_Cortex-A57x4_A53x4
-
-   A similar change can be made to the other Cortex-A57-A53 Base FVP variants.
-
-Version 0.4
------------
-
-New features
-^^^^^^^^^^^^
-
--  Makefile improvements:
-
-   -  Improved dependency checking when building.
-
-   -  Removed ``dump`` target (build now always produces dump files).
-
-   -  Enabled platform ports to optionally make use of parts of the Trusted
-      Firmware (e.g. BL3-1 only), rather than being forced to use all parts.
-      Also made the ``fip`` target optional.
-
-   -  Specified the full path to source files and removed use of the ``vpath``
-      keyword.
-
--  Provided translation table library code for potential re-use by platforms
-   other than the FVPs.
-
--  Moved architectural timer setup to platform-specific code.
-
--  Added standby state support to PSCI cpu_suspend implementation.
-
--  SRAM usage improvements:
-
-   -  Started using the ``-ffunction-sections``, ``-fdata-sections`` and
-      ``--gc-sections`` compiler/linker options to remove unused code and data
-      from the images. Previously, all common functions were being built into
-      all binary images, whether or not they were actually used.
-
-   -  Placed all assembler functions in their own section to allow more unused
-      functions to be removed from images.
-
-   -  Updated BL1 and BL2 to use a single coherent stack each, rather than one
-      per CPU.
-
-   -  Changed variables that were unnecessarily declared and initialized as
-      non-const (i.e. in the .data section) so they are either uninitialized
-      (zero init) or const.
-
--  Moved the Test Secure-EL1 Payload (BL3-2) to execute in Trusted SRAM by
-   default. The option for it to run in Trusted DRAM remains.
-
--  Implemented a TrustZone Address Space Controller (TZC-400) driver. A
-   default configuration is provided for the Base FVPs. This means the model
-   parameter ``-C bp.secure_memory=1`` is now supported.
-
--  Started saving the PSCI cpu_suspend 'power_state' parameter prior to
-   suspending a CPU. This allows platforms that implement multiple power-down
-   states at the same affinity level to identify a specific state.
-
--  Refactored the entire codebase to reduce the amount of nesting in header
-   files and to make the use of system/user includes more consistent. Also
-   split platform.h to separate out the platform porting declarations from the
-   required platform porting definitions and the definitions/declarations
-   specific to the platform port.
-
--  Optimized the data cache clean/invalidate operations.
-
--  Improved the BL3-1 unhandled exception handling and reporting. Unhandled
-   exceptions now result in a dump of registers to the console.
-
--  Major rework to the handover interface between BL stages, in particular the
-   interface to BL3-1. The interface now conforms to a specification and is
-   more future proof.
-
--  Added support for optionally making the BL3-1 entrypoint a reset handler
-   (instead of BL1). This allows platforms with an alternative image loading
-   architecture to re-use BL3-1 with fewer modifications to generic code.
-
--  Reserved some DDR DRAM for secure use on FVP platforms to avoid future
-   compatibility problems with non-secure software.
-
--  Added support for secure interrupts targeting the Secure-EL1 Payload (SP)
-   (using GICv2 routing only). Demonstrated this working by adding an interrupt
-   target and supporting test code to the TSP. Also demonstrated non-secure
-   interrupt handling during TSP processing.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  Now support use of the model parameter ``-C bp.secure_memory=1`` in the Base
-   FVPs (see **New features**).
-
--  Support for secure world interrupt handling now available (see **New
-   features**).
-
--  Made enough SRAM savings (see **New features**) to enable the Test Secure-EL1
-   Payload (BL3-2) to execute in Trusted SRAM by default.
-
--  The tested filesystem used for this release (Linaro AArch64 OpenEmbedded
-   14.04) now correctly reports progress in the console.
-
--  Improved the Makefile structure to make it easier to separate out parts of
-   the TF-A for re-use in platform ports. Also, improved target dependency
-   checking.
-
-Known issues
-^^^^^^^^^^^^
-
--  GICv3 support is experimental. The Linux kernel patches to support this are
-   not widely available. There are known issues with GICv3 initialization in
-   the TF-A.
-
--  Dynamic image loading is not available yet. The current image loader
-   implementation (used to load BL2 and all subsequent images) has some
-   limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead
-   to loading errors, even if the images should theoretically fit in memory.
-
--  TF-A still uses too much on-chip Trusted SRAM. A number of RAM usage
-   enhancements have been identified to rectify this situation.
-
--  CPU idle does not work on the advertised version of the Foundation FVP.
-   Some FVP fixes are required that are not available externally at the time
-   of writing. This can be worked around by disabling CPU idle in the Linux
-   kernel.
-
--  Various bugs in TF-A, UEFI and the Linux kernel have been observed when
-   using Linaro toolchain versions later than 13.11. Although most of these
-   have been fixed, some remain at the time of writing. These mainly seem to
-   relate to a subtle change in the way the compiler converts between 64-bit
-   and 32-bit values (e.g. during casting operations), which reveals
-   previously hidden bugs in client code.
-
--  The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
-   its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
-
-Version 0.3
------------
-
-New features
-^^^^^^^^^^^^
-
--  Support for Foundation FVP Version 2.0 added.
-   The documented UEFI configuration disables some devices that are unavailable
-   in the Foundation FVP, including MMC and CLCD. The resultant UEFI binary can
-   be used on the AEMv8 and Cortex-A57-A53 Base FVPs, as well as the Foundation
-   FVP.
-
-   .. note::
-      The software will not work on Version 1.0 of the Foundation FVP.
-
--  Enabled third party contributions. Added a new contributing.md containing
-   instructions for how to contribute and updated copyright text in all files
-   to acknowledge contributors.
-
--  The PSCI CPU_SUSPEND API has been stabilised to the extent where it can be
-   used for entry into power down states with the following restrictions:
-
-   -  Entry into standby states is not supported.
-   -  The API is only supported on the AEMv8 and Cortex-A57-A53 Base FVPs.
-
--  The PSCI AFFINITY_INFO api has undergone limited testing on the Base FVPs to
-   allow experimental use.
-
--  Required C library and runtime header files are now included locally in
-   TF-A instead of depending on the toolchain standard include paths. The
-   local implementation has been cleaned up and reduced in scope.
-
--  Added I/O abstraction framework, primarily to allow generic code to load
-   images in a platform-independent way. The existing image loading code has
-   been reworked to use the new framework. Semi-hosting and NOR flash I/O
-   drivers are provided.
-
--  Introduced Firmware Image Package (FIP) handling code and tools. A FIP
-   combines multiple firmware images with a Table of Contents (ToC) into a
-   single binary image. The new FIP driver is another type of I/O driver. The
-   Makefile builds a FIP by default and the FVP platform code expect to load a
-   FIP from NOR flash, although some support for image loading using semi-
-   hosting is retained.
-
-   .. note::
-      Building a FIP by default is a non-backwards-compatible change.
-
-   .. note::
-      Generic BL2 code now loads a BL3-3 (non-trusted firmware) image into
-      DRAM instead of expecting this to be pre-loaded at known location. This is
-      also a non-backwards-compatible change.
-
-   .. note::
-      Some non-trusted firmware (e.g. UEFI) will need to be rebuilt so that
-      it knows the new location to execute from and no longer needs to copy
-      particular code modules to DRAM itself.
-
--  Reworked BL2 to BL3-1 handover interface. A new composite structure
-   (bl31_args) holds the superset of information that needs to be passed from
-   BL2 to BL3-1, including information on how handover execution control to
-   BL3-2 (if present) and BL3-3 (non-trusted firmware).
-
--  Added library support for CPU context management, allowing the saving and
-   restoring of
-
-   -  Shared system registers between Secure-EL1 and EL1.
-   -  VFP registers.
-   -  Essential EL3 system registers.
-
--  Added a framework for implementing EL3 runtime services. Reworked the PSCI
-   implementation to be one such runtime service.
-
--  Reworked the exception handling logic, making use of both SP_EL0 and SP_EL3
-   stack pointers for determining the type of exception, managing general
-   purpose and system register context on exception entry/exit, and handling
-   SMCs. SMCs are directed to the correct EL3 runtime service.
-
--  Added support for a Test Secure-EL1 Payload (TSP) and a corresponding
-   Dispatcher (TSPD), which is loaded as an EL3 runtime service. The TSPD
-   implements Secure Monitor functionality such as world switching and
-   EL1 context management, and is responsible for communication with the TSP.
-
-   .. note::
-      The TSPD does not yet contain support for secure world interrupts.
-   .. note::
-      The TSP/TSPD is not built by default.
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  Support has been added for switching context between secure and normal
-   worlds in EL3.
-
--  PSCI API calls ``AFFINITY_INFO`` & ``PSCI_VERSION`` have now been tested (to
-   a limited extent).
-
--  The TF-A build artifacts are now placed in the ``./build`` directory and
-   sub-directories instead of being placed in the root of the project.
-
--  TF-A is now free from build warnings. Build warnings are now treated as
-   errors.
-
--  TF-A now provides C library support locally within the project to maintain
-   compatibility between toolchains/systems.
-
--  The PSCI locking code has been reworked so it no longer takes locks in an
-   incorrect sequence.
-
--  The RAM-disk method of loading a Linux file-system has been confirmed to
-   work with the TF-A and Linux kernel version (based on version 3.13) used
-   in this release, for both Foundation and Base FVPs.
-
-Known issues
-^^^^^^^^^^^^
-
-The following is a list of issues which are expected to be fixed in the future
-releases of TF-A.
-
--  The TrustZone Address Space Controller (TZC-400) is not being programmed
-   yet. Use of model parameter ``-C bp.secure_memory=1`` is not supported.
-
--  No support yet for secure world interrupt handling.
-
--  GICv3 support is experimental. The Linux kernel patches to support this are
-   not widely available. There are known issues with GICv3 initialization in
-   TF-A.
-
--  Dynamic image loading is not available yet. The current image loader
-   implementation (used to load BL2 and all subsequent images) has some
-   limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead
-   to loading errors, even if the images should theoretically fit in memory.
-
--  TF-A uses too much on-chip Trusted SRAM. Currently the Test Secure-EL1
-   Payload (BL3-2) executes in Trusted DRAM since there is not enough SRAM.
-   A number of RAM usage enhancements have been identified to rectify this
-   situation.
-
--  CPU idle does not work on the advertised version of the Foundation FVP.
-   Some FVP fixes are required that are not available externally at the time
-   of writing.
-
--  Various bugs in TF-A, UEFI and the Linux kernel have been observed when
-   using Linaro toolchain versions later than 13.11. Although most of these
-   have been fixed, some remain at the time of writing. These mainly seem to
-   relate to a subtle change in the way the compiler converts between 64-bit
-   and 32-bit values (e.g. during casting operations), which reveals
-   previously hidden bugs in client code.
-
--  The tested filesystem used for this release (Linaro AArch64 OpenEmbedded
-   14.01) does not report progress correctly in the console. It only seems to
-   produce error output, not standard output. It otherwise appears to function
-   correctly. Other filesystem versions on the same software stack do not
-   exhibit the problem.
-
--  The Makefile structure doesn't make it easy to separate out parts of the
-   TF-A for re-use in platform ports, for example if only BL3-1 is required in
-   a platform port. Also, dependency checking in the Makefile is flawed.
-
--  The firmware design documentation for the Test Secure-EL1 Payload (TSP) and
-   its dispatcher (TSPD) is incomplete. Similarly for the PSCI section.
-
-Version 0.2
------------
-
-New features
-^^^^^^^^^^^^
-
--  First source release.
-
--  Code for the PSCI suspend feature is supplied, although this is not enabled
-   by default since there are known issues (see below).
-
-Issues resolved since last release
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
--  The "psci" nodes in the FDTs provided in this release now fully comply
-   with the recommendations made in the PSCI specification.
-
-Known issues
-^^^^^^^^^^^^
-
-The following is a list of issues which are expected to be fixed in the future
-releases of TF-A.
-
--  The TrustZone Address Space Controller (TZC-400) is not being programmed
-   yet. Use of model parameter ``-C bp.secure_memory=1`` is not supported.
-
--  No support yet for secure world interrupt handling or for switching context
-   between secure and normal worlds in EL3.
-
--  GICv3 support is experimental. The Linux kernel patches to support this are
-   not widely available. There are known issues with GICv3 initialization in
-   TF-A.
-
--  Dynamic image loading is not available yet. The current image loader
-   implementation (used to load BL2 and all subsequent images) has some
-   limitations. Changing BL2 or BL3-1 load addresses in certain ways can lead
-   to loading errors, even if the images should theoretically fit in memory.
-
--  Although support for PSCI ``CPU_SUSPEND`` is present, it is not yet stable
-   and ready for use.
-
--  PSCI API calls ``AFFINITY_INFO`` & ``PSCI_VERSION`` are implemented but have
-   not been tested.
-
--  The TF-A make files result in all build artifacts being placed in the root
-   of the project. These should be placed in appropriate sub-directories.
-
--  The compilation of TF-A is not free from compilation warnings. Some of these
-   warnings have not been investigated yet so they could mask real bugs.
-
--  TF-A currently uses toolchain/system include files like stdio.h. It should
-   provide versions of these within the project to maintain compatibility
-   between toolchains/systems.
-
--  The PSCI code takes some locks in an incorrect sequence. This may cause
-   problems with suspend and hotplug in certain conditions.
-
--  The Linux kernel used in this release is based on version 3.12-rc4. Using
-   this kernel with the TF-A fails to start the file-system as a RAM-disk. It
-   fails to execute user-space ``init`` from the RAM-disk. As an alternative,
-   the VirtioBlock mechanism can be used to provide a file-system to the
-   kernel.
-
---------------
-
-*Copyright (c) 2013-2020, Arm Limited and Contributors. All rights reserved.*
-
-.. _SDEI Specification: http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf
-.. _tf-issue#501: https://github.com/ARM-software/tf-issues/issues/501
-.. _PR#1002: https://github.com/ARM-software/arm-trusted-firmware/pull/1002#issuecomment-312650193
-.. _mbed TLS releases: https://tls.mbed.org/tech-updates/releases