feat(hw_crc): add support for HW computed CRC
Added support for HW computed CRC using Arm ACLE intrinsics.
These are built-in intrinsics available for ARMv8.1-A, and
onwards.
These intrinsics are enabled via '-march=armv8-a+crc' compile
switch for ARMv8-A (supports CRC instructions optionally).
HW CRC support is enabled unconditionally in BL2 for all Arm
platforms.
HW CRC calculation is verified offline to ensure a similar
result as its respective ZLib utility function.
HW CRC calculation support will be used in the upcoming
firmware update patches.
Change-Id: Ia2ae801f62d2003e89a9c3e6d77469b5312614b3
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index fff1294..5faf9f9 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -178,6 +178,13 @@
drivers/partition/partition.c
endif
+# Enable CRC instructions via extension for ARMv8-A CPUs.
+# For ARMv8.1-A, and onwards CRC instructions are default enabled.
+# Enable HW computed CRC support unconditionally in BL2 component.
+ifeq (${ARM_ARCH_MINOR},0)
+ BL2_CPPFLAGS += -march=armv8-a+crc
+endif
+
ifeq (${ARCH}, aarch64)
PLAT_INCLUDES += -Iinclude/plat/arm/common/aarch64
endif
@@ -223,6 +230,7 @@
drivers/io/io_storage.c \
plat/arm/common/arm_bl2_setup.c \
plat/arm/common/arm_err.c \
+ common/hw_crc32.c \
${ARM_IO_SOURCES}
# Firmware Configuration Framework sources