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authorAnton Blanchard <anton@samba.org>2012-04-17 18:45:28 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-04-30 15:37:27 +1000
commitd23c6fb4ebf7d3563dd801c95b22ada4516e35ce (patch)
tree2de1bad46e8c2909835e7e014b43fde87d866fc3 /arch/powerpc/Makefile
parent894a65c857b2e595da1c65d1ad1a7c559ac88c8d (diff)
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powerpc: Add 64-bit CPU targets for gcc
Add a menu to select various 64-bit CPU targets for gcc. We default to -mtune=power7 and if gcc doesn't understand that we fallback to -mtune=power4. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/Makefile')
-rw-r--r--arch/powerpc/Makefile25
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 6ee3beb4d26..159e94f4b22 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -69,6 +69,16 @@ LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=no -mcall-aixdesc
CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
+
+CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4)
+CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
+CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
+CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
+CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
+CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
+
+CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
+
KBUILD_CPPFLAGS += -Iarch/$(ARCH)
KBUILD_AFLAGS += -Iarch/$(ARCH)
KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
@@ -76,22 +86,11 @@ CPP = $(CC) -E $(KBUILD_CFLAGS)
CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
-ifeq ($(CONFIG_PPC64),y)
-ifeq ($(CONFIG_POWER4_ONLY),y)
- KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
-else
- KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
-endif
-endif
-
KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
-ifeq ($(CONFIG_TUNE_CELL),y)
- KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
-endif
-
-# No AltiVec instruction when building kernel
+# No AltiVec or VSX instructions when building kernel
KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
+KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
# No SPE instruction when building kernel
# (We use all available options to help semi-broken compilers)