diff options
Diffstat (limited to 'kernel/arch/arm64/Makefile')
| -rw-r--r-- | kernel/arch/arm64/Makefile | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/kernel/arch/arm64/Makefile b/kernel/arch/arm64/Makefile index 81151663e..b6c90e500 100644 --- a/kernel/arch/arm64/Makefile +++ b/kernel/arch/arm64/Makefile @@ -17,7 +17,19 @@ GZFLAGS :=-9 KBUILD_DEFCONFIG := defconfig -KBUILD_CFLAGS += -mgeneral-regs-only +# Check for binutils support for specific extensions +lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) + +ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y) + ifeq ($(lseinstr),) +$(warning LSE atomics not supported by binutils) + endif +endif + +KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) +KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) +KBUILD_AFLAGS += $(lseinstr) + ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian AS += -EB @@ -31,7 +43,7 @@ endif CHECKFLAGS += -D__aarch64__ ifeq ($(CONFIG_ARM64_ERRATUM_843419), y) -CFLAGS_MODULE += -mcmodel=large +KBUILD_CFLAGS_MODULE += -mcmodel=large endif # Default value @@ -44,6 +56,13 @@ else TEXT_OFFSET := 0x00080000 endif +# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61) +# in 32-bit arithmetic +KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \ + (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ + + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \ + - (1 << (64 - 32 - 3)) )) ) + export TEXT_OFFSET GZFLAGS core-y += arch/arm64/kernel/ arch/arm64/mm/ @@ -62,7 +81,10 @@ all: $(KBUILD_IMAGE) $(KBUILD_DTBS) boot := arch/arm64/boot -Image Image.gz: vmlinux +Image: vmlinux + $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ + +Image.%: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ zinstall install: vmlinux |