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| author | Raphael Poggi <poggi.raph@gmail.com> | 2016-07-04 13:52:45 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-07-06 10:21:16 +0200 |
| commit | 375170a3c9fad9d119a0a729da87b6285a2731ca (patch) | |
| tree | 4865610bea7f1725bf7fc16c8881369055e32453 | |
| parent | 053957b306a4a484983857c1069c18be2d1127a4 (diff) | |
| download | barebox-375170a3c9fad9d119a0a729da87b6285a2731ca.tar.gz barebox-375170a3c9fad9d119a0a729da87b6285a2731ca.tar.xz | |
arm: Makefile: rework makefile to handle armv8
Signed-off-by: Raphael Poggi <poggi.raph@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/Makefile | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 5ccdb83dc7..2cf5febeb4 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -1,7 +1,11 @@ CPPFLAGS += -D__ARM__ -fno-strict-aliasing # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb: +ifeq ($(CONFIG_CPU_V8),y) +CPPFLAGS +=$(call cc-option,-maarch64,) +else CPPFLAGS +=$(call cc-option,-marm,) +endif ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) CPPFLAGS += -mbig-endian @@ -17,13 +21,16 @@ endif # at least some of the code would be executed with MMU off, lets be # conservative and instruct the compiler not to generate any unaligned # accesses +ifeq ($(CONFIG_CPU_V8),n) CFLAGS += -mno-unaligned-access +endif # This selects which instruction set is used. # Note that GCC does not numerically define an architecture version # macro, but instead defines a whole series of macros which makes # testing for a specific architecture or later rather impossible. +arch-$(CONFIG_CPU_64v8) := -D__LINUX_ARM_ARCH__=8 $(call cc-option,-march=armv8-a) arch-$(CONFIG_CPU_32v7) :=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) arch-$(CONFIG_CPU_32v6) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6) arch-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) @@ -34,11 +41,15 @@ tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale +ifeq ($(CONFIG_CPU_V8), y) +CFLAGS_ABI :=-mabi=lp64 +else ifeq ($(CONFIG_AEABI),y) CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork else CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) endif +endif ifeq ($(CONFIG_ARM_UNWIND),y) CFLAGS_ABI +=-funwind-tables @@ -51,8 +62,13 @@ CFLAGS_THUMB2 :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN) AFLAGS_THUMB2 :=$(CFLAGS_THUMB2) -Wa$(comma)-mthumb endif +ifeq ($(CONFIG_CPU_V8), y) +CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y) +AFLAGS += -include asm/unified.h +else CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float $(CFLAGS_THUMB2) AFLAGS += -include asm/unified.h -msoft-float $(AFLAGS_THUMB2) +endif # Machine directory name. This list is sorted alphanumerically # by CONFIG_* macro name. |