refactor(plat/arm): store UUID as a string, rather than ints
NOTE: Breaking change to the way UUIDs are stored in the DT
Currently, UUIDs are stored in the device tree as
sequences of 4 integers. There is a mismatch in endianness
between the way UUIDs are represented in memory and the way
they are parsed from the device tree. As a result, we must either
store the UUIDs in little-endian format in the DT (which means
that they do not match up with their string representations)
or perform endianness conversion after parsing them.
Currently, TF-A chooses the second option, with unwieldy
endianness-conversion taking place after reading a UUID.
To fix this problem, and to make it convenient to copy and
paste UUIDs from other tools, change to store UUIDs in string
format, using a new wrapper function to parse them from the
device tree.
Change-Id: I38bd63c907be14e412f03ef0aab9dcabfba0eaa0
Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index 232d562..2ae26da 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -222,7 +222,8 @@
DYN_CFG_SOURCES += plat/arm/common/arm_dyn_cfg.c \
plat/arm/common/arm_dyn_cfg_helpers.c \
- common/fdt_wrappers.c
+ common/fdt_wrappers.c \
+ common/uuid.c
BL1_SOURCES += ${DYN_CFG_SOURCES}
BL2_SOURCES += ${DYN_CFG_SOURCES}
@@ -302,6 +303,7 @@
ifeq (${SPD},spmd)
BL31_SOURCES += plat/common/plat_spmd_manifest.c \
common/fdt_wrappers.c \
+ common/uuid.c \
${LIBFDT_SRCS}
endif