At present U-Boot x86 build is using -mpreferred-stack-boundary=2 which is 4 bytes stack boundary alignment. With 64-bit U-Boot, the minimal required stack boundary alignment is 16 bytes.
If -mpreferred-stack-boundary is not specified, the default is 4 (16 bytes). Switch to use the default one.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
arch/x86/config.mk | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/config.mk b/arch/x86/config.mk index 74b87ce..043425e 100644 --- a/arch/x86/config.mk +++ b/arch/x86/config.mk @@ -10,8 +10,7 @@ CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000 PLATFORM_CPPFLAGS += -fno-strict-aliasing PLATFORM_CPPFLAGS += -fomit-frame-pointer PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \ - $(call cc-option, -fno-unit-at-a-time)) \ - $(call cc-option, -mpreferred-stack-boundary=2) + $(call cc-option, -fno-unit-at-a-time))
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86) PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm