On Apr 17, 2012, at 11:45 PM, Anton Blanchard wrote: > > 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 <an...@samba.org> > ---
Can you add a target for e5500 cpu. - k > > Index: linux-build/arch/powerpc/Makefile > =================================================================== > --- linux-build.orig/arch/powerpc/Makefile 2012-04-18 14:31:31.614666419 > +1000 > +++ linux-build/arch/powerpc/Makefile 2012-04-18 14:37:08.680708678 +1000 > @@ -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) > Index: linux-build/arch/powerpc/platforms/Kconfig.cputype > =================================================================== > --- linux-build.orig/arch/powerpc/platforms/Kconfig.cputype 2012-04-18 > 14:31:25.134549903 +1000 > +++ linux-build/arch/powerpc/platforms/Kconfig.cputype 2012-04-18 > 14:36:40.576207829 +1000 > @@ -78,6 +78,36 @@ config PPC_BOOK3E_64 > > endchoice > > +choice > + prompt "CPU selection" > + depends on PPC64 > + default GENERIC_CPU > + help > + This will create a kernel which is optimised for a particular CPU. > + The resulting kernel may not run on other CPUs, so use this with care. > + > + If unsure, select Generic. > + > +config GENERIC_CPU > + bool "Generic" > + > +config CELL_CPU > + bool "Cell Broadband Engine" > + > +config POWER4_CPU > + bool "POWER4" > + > +config POWER5_CPU > + bool "POWER5" > + > +config POWER6_CPU > + bool "POWER6" > + > +config POWER7_CPU > + bool "POWER7" > + > +endchoice > + > config PPC_BOOK3S > def_bool y > depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
