summaryrefslogtreecommitdiff
path: root/arch/arm64/Makefile
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm64/Makefile')
-rw-r--r--arch/arm64/Makefile18
1 files changed, 16 insertions, 2 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 3258174e6..d10b5d483 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -17,7 +17,18 @@ 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_AFLAGS += $(lseinstr)
+
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS += -mbig-endian
AS += -EB
@@ -62,7 +73,10 @@ 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