From 3002af0ff57e9db40baeefbc14a336ad206e8fea Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Mon, 26 Jun 2017 20:18:10 +0800 Subject: [PATCH] MLK-15286 arm: arm64: only use general regs When compiling with android toolchain, there is an instruction "str q0, [x8],#16", but x8 is not 16bytes aligned, this instruction will trigger sync abort. So, following Linux kernel, only use general regs for arm64. If not, compiler may use simd registers Q[x]. We need to avoid using simd registers in U-Boot, because load/store Q[x] has restriction that 128bits aligned when str/ldr. Signed-off-by: Peng Fan (cherry picked from commit 186ccd8de53f986c5913432638dfaca9bdc97e89) (cherry picked from commit 8f3f0d339783e066f7815408949677b62e465b62) --- arch/arm/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 5384981c17..22360a36ea 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -18,7 +18,7 @@ arch-$(CONFIG_CPU_V7A) =$(call cc-option, -march=armv7-a, \ $(call cc-option, -march=armv7)) arch-$(CONFIG_CPU_V7M) =-march=armv7-m arch-$(CONFIG_CPU_V7R) =-march=armv7-r -arch-$(CONFIG_ARM64) =-march=armv8-a +arch-$(CONFIG_ARM64) =-march=armv8-a -mgeneral-regs-only # On Tegra systems we must build SPL for the armv4 core on the device # but otherwise we can use the value in CONFIG_SYS_ARM_ARCH -- 2.17.1