arm: armv7: add compile option -mno-unaligned-access if available

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>
Tested-by: Gary Thomas <gary@mlbassoc.com>

diff --git a/arch/arm/cpu/armv7/config.mk b/arch/arm/cpu/armv7/config.mk
index 5407cb68a89c29f001ac58e51ee024cbde128dcf..560c084dc96b54bb5f3dade758d2513c4b030894 100644 (file)
--- 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)
 
 # =========================================================================
 #