[U-Boot] [PATCH] arm: armv7: add compile option -mno-unaligned-access if available

Tetsuyuki Kobayashi
2012-07-02T09:42:10Z

Recent compiler generates unaligned memory access in armv7 default.
But current U-Boot does not allow unaligned memory access, so it causes
data abort exception.
This patch add compile option "-mno-unaligned-access" if it is available.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
---
arch/arm/cpu/armv7/config.mk | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/cpu/armv7/config.mk b/arch/arm/cpu/armv7/config.mk
index 5407cb6..560c084 100644
--- a/arch/arm/cpu/armv7/config.mk
+++ b/arch/arm/cpu/armv7/config.mk
@@ -26,6 +26,8 @@ PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float
# supported by more tool-chains
PF_CPPFLAGS_ARMV7 := $(call cc-option, -march=armv7-a, -march=armv5)
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARMV7)
+PF_CPPFLAGS_NO_UNALIGNED := $(call cc-option, -mno-unaligned-access,)
+PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_NO_UNALIGNED)

# =========================================================================
#
-- 1.7.9.5