diff options
Diffstat (limited to 'arch/i386/Makefile.cpu')
| -rw-r--r-- | arch/i386/Makefile.cpu | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/i386/Makefile.cpu b/arch/i386/Makefile.cpu new file mode 100644 index 0000000..86c7bb1 --- /dev/null +++ b/arch/i386/Makefile.cpu @@ -0,0 +1,33 @@ +# CPU tuning section - shared with UML. +# Must change only cflags-y (or [yn]), not CFLAGS! That makes a difference for UML. + +align := $(cc-option-align) +cflags-$(CONFIG_M386) += -march=i386 +cflags-$(CONFIG_M486) += -march=i486 +cflags-$(CONFIG_M586) += -march=i586 +cflags-$(CONFIG_M586TSC) += -march=i586 +cflags-$(CONFIG_M586MMX) += $(call cc-option,-march=pentium-mmx,-march=i586) +cflags-$(CONFIG_M686) += -march=i686 +cflags-$(CONFIG_MPENTIUMII) += -march=i686 $(call cc-option,-mtune=pentium2) +cflags-$(CONFIG_MPENTIUMIII) += -march=i686 $(call cc-option,-mtune=pentium3) +cflags-$(CONFIG_MPENTIUMM) += -march=i686 $(call cc-option,-mtune=pentium3) +cflags-$(CONFIG_MPENTIUM4) += -march=i686 $(call cc-option,-mtune=pentium4) +cflags-$(CONFIG_MK6) += -march=k6 +# Please note, that patches that add -march=athlon-xp and friends are pointless. +# They make zero difference whatsosever to performance at this time. +cflags-$(CONFIG_MK7) += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4) +cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)) +cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0 +cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call cc-option,-mtune=pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0 +cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586) +cflags-$(CONFIG_MWINCHIP2) += $(call cc-option,-march=winchip2,-march=i586) +cflags-$(CONFIG_MWINCHIP3D) += $(call cc-option,-march=winchip2,-march=i586) +cflags-$(CONFIG_MCYRIXIII) += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0 +cflags-$(CONFIG_MVIAC3_2) += $(call cc-option,-march=c3-2,-march=i686) + +# AMD Elan support +cflags-$(CONFIG_X86_ELAN) += -march=i486 + +# Geode GX1 support +cflags-$(CONFIG_MGEODEGX1) += $(call cc-option,-march=pentium-mmx,-march=i486) + |