qemu/qemu_sbsa: Adding Qemu SBSA platform

This patch introduces Qemu SBSA platform.
Both platform specific files where copied from qemu/qemu with changes for
DRAM base above 32bit and removal of ARMv7 conditional defines/code.
Documentation is aligned to rest of SBSA patches along the series and
planed changes in edk2-platform repo.

Fixes ARM-software/tf-issues#602

Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Change-Id: I8ebc34eedb2268365e479ef05654b2df1b99128c
diff --git a/plat/qemu/qemu_sbsa/platform.mk b/plat/qemu/qemu_sbsa/platform.mk
new file mode 100644
index 0000000..0d6047d
--- /dev/null
+++ b/plat/qemu/qemu_sbsa/platform.mk
@@ -0,0 +1,101 @@
+#
+# Copyright (c) 2019, Linaro Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+CRASH_REPORTING	:=	1
+
+include lib/libfdt/libfdt.mk
+
+# Enable new version of image loading on QEMU platforms
+LOAD_IMAGE_V2		:=	1
+
+ifeq ($(NEED_BL32),yes)
+$(eval $(call add_define,QEMU_LOAD_BL32))
+endif
+
+PLAT_QEMU_PATH		:=	plat/qemu/qemu_sbsa
+PLAT_QEMU_COMMON_PATH	:=	plat/qemu/common
+PLAT_INCLUDES		:=	-Iinclude/plat/arm/common/			\
+				-I${PLAT_QEMU_COMMON_PATH}/include		\
+				-I${PLAT_QEMU_PATH}/include			\
+				-Iinclude/common/tbbr
+
+PLAT_INCLUDES		+=	-Iinclude/plat/arm/common/${ARCH}
+
+PLAT_BL_COMMON_SOURCES	:=	${PLAT_QEMU_COMMON_PATH}/qemu_common.c		\
+				${PLAT_QEMU_COMMON_PATH}/qemu_console.c		\
+				drivers/arm/pl011/${ARCH}/pl011_console.S
+
+include lib/xlat_tables_v2/xlat_tables.mk
+PLAT_BL_COMMON_SOURCES	+=	${XLAT_TABLES_LIB_SRCS}
+
+BL1_SOURCES		+=	drivers/io/io_semihosting.c			\
+				drivers/io/io_storage.c				\
+				drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				lib/semihosting/semihosting.c			\
+				lib/semihosting/${ARCH}/semihosting_call.S	\
+				${PLAT_QEMU_COMMON_PATH}/qemu_io_storage.c	\
+				${PLAT_QEMU_COMMON_PATH}/${ARCH}/plat_helpers.S	\
+				${PLAT_QEMU_COMMON_PATH}/qemu_bl1_setup.c
+
+BL1_SOURCES		+=	lib/cpus/aarch64/aem_generic.S			\
+				lib/cpus/aarch64/cortex_a53.S			\
+				lib/cpus/aarch64/cortex_a57.S
+
+BL2_SOURCES		+=	drivers/io/io_semihosting.c			\
+				drivers/io/io_storage.c				\
+				drivers/io/io_fip.c				\
+				drivers/io/io_memmap.c				\
+				lib/semihosting/semihosting.c			\
+				lib/semihosting/${ARCH}/semihosting_call.S	\
+				${PLAT_QEMU_COMMON_PATH}/qemu_io_storage.c	\
+				${PLAT_QEMU_COMMON_PATH}/${ARCH}/plat_helpers.S	\
+				${PLAT_QEMU_COMMON_PATH}/qemu_bl2_setup.c	\
+				common/fdt_fixup.c				\
+				$(LIBFDT_SRCS)
+ifeq (${LOAD_IMAGE_V2},1)
+BL2_SOURCES		+=	${PLAT_QEMU_COMMON_PATH}/qemu_bl2_mem_params_desc.c	\
+				${PLAT_QEMU_COMMON_PATH}/qemu_image_load.c		\
+				common/desc_image_load.c
+endif
+
+QEMU_GIC_SOURCES	:=	drivers/arm/gic/v3/gicv3_helpers.c		\
+				drivers/arm/gic/v3/gicv3_main.c			\
+				drivers/arm/gic/common/gic_common.c		\
+				plat/common/plat_gicv3.c			\
+				${PLAT_QEMU_COMMON_PATH}/qemu_gicv3.c
+
+BL31_SOURCES		+=	lib/cpus/aarch64/aem_generic.S			\
+				lib/cpus/aarch64/cortex_a53.S			\
+				lib/cpus/aarch64/cortex_a57.S			\
+				plat/common/plat_psci_common.c			\
+				${PLAT_QEMU_COMMON_PATH}/qemu_pm.c		\
+				${PLAT_QEMU_COMMON_PATH}/topology.c		\
+				${PLAT_QEMU_COMMON_PATH}/aarch64/plat_helpers.S	\
+				${PLAT_QEMU_COMMON_PATH}/qemu_bl31_setup.c	\
+				${QEMU_GIC_SOURCES}
+
+SEPARATE_CODE_AND_RODATA	:= 1
+ENABLE_STACK_PROTECTOR		:= 0
+ifneq ($(ENABLE_STACK_PROTECTOR), 0)
+	PLAT_BL_COMMON_SOURCES	+=	${PLAT_QEMU_COMMON_PATH}/qemu_stack_protector.c
+endif
+
+MULTI_CONSOLE_API	:= 1
+
+# Disable the PSCI platform compatibility layer
+ENABLE_PLAT_COMPAT	:= 0
+
+# Use known base for UEFI if not given from command line
+# By default BL33 is at FLASH1 base
+PRELOADED_BL33_BASE	?= 0x10000000
+
+# Qemu SBSA plafrom only support SEC_SRAM
+BL32_RAM_LOCATION_ID	= SEC_SRAM_ID
+$(eval $(call add_define,BL32_RAM_LOCATION_ID))
+
+# Do not enable SVE
+ENABLE_SVE_FOR_NS	:= 0