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- From 078cbf942c86d77775a26d83fc87ca244de02d4c Mon Sep 17 00:00:00 2001
- From: Govindraj Raja <govindraj.raja@arm.com>
- Date: Fri, 5 May 2023 09:09:36 -0500
- Subject: [PATCH] fix(build): allow lower address access with gcc-12
- With gcc-12 any lower address access can trigger a warning/error
- this would be useful in other parts of system but in TF-A
- there are various reasons to access to the lower address ranges,
- example using mmio_read_*/writes_*
- So setup to allow access to lower addresses while using gcc-12
- Change-Id: Id1b4012b13bc6876d83b90a347fee12478a1921d
- Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
- Upstream: https://github.com/ARM-software/arm-trusted-firmware/commit/dea23e245fb890c6c06eff7d1aed8fffa981fc05
- Signed-off-by: Julien Olivain <ju.o@free.fr>
- ---
- Makefile | 4 ++++
- make_helpers/build_macros.mk | 12 ++++++++++++
- 2 files changed, 16 insertions(+)
- diff --git a/Makefile b/Makefile
- index dccf0121d..edd7f5886 100644
- --- a/Makefile
- +++ b/Makefile
- @@ -385,6 +385,10 @@ ifeq ($(findstring clang,$(notdir $(CC))),)
- WARNINGS += -Wunused-but-set-variable -Wmaybe-uninitialized \
- -Wpacked-bitfield-compat -Wshift-overflow=2 \
- -Wlogical-op
- +
- +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523
- +TF_CFLAGS += $(call cc_option, --param=min-pagesize=0)
- +
- else
- # using clang
- WARNINGS += -Wshift-overflow -Wshift-sign-overflow \
- diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk
- index 12aaee684..3a54bf67c 100644
- --- a/make_helpers/build_macros.mk
- +++ b/make_helpers/build_macros.mk
- @@ -86,6 +86,18 @@ define assert_numerics
- $(foreach num,$1,$(eval $(call assert_numeric,$(num))))
- endef
-
- +# Convenience function to check for a given linker option. An call to
- +# $(call ld_option, --no-XYZ) will return --no-XYZ if supported by the linker
- +define ld_option
- + $(shell if $(LD) $(1) -v >/dev/null 2>&1; then echo $(1); fi )
- +endef
- +
- +# Convenience function to check for a given compiler option. A call to
- +# $(call cc_option, --no-XYZ) will return --no-XYZ if supported by the compiler
- +define cc_option
- + $(shell if $(CC) $(1) -c -x c /dev/null -o /dev/null >/dev/null 2>&1; then echo $(1); fi )
- +endef
- +
- # CREATE_SEQ is a recursive function to create sequence of numbers from 1 to
- # $(2) and assign the sequence to $(1)
- define CREATE_SEQ
- --
- 2.41.0
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