path: root/arch/x86/Makefile_32.cpu
diff options
authorSam Ravnborg <sam@ravnborg.org>2007-10-25 19:42:04 +0200
committerSam Ravnborg <sam@ravnborg.org>2007-10-25 22:27:34 +0200
commit74b469f2e6b1589118b6ac05c7256add01e572d2 (patch)
treed963009bef4f36ae610dd56ca69961e0de9ee29c /arch/x86/Makefile_32.cpu
parentc9927c2bf4f45bb85e8b502ab3fb79ad6483c244 (diff)
x86: move i386 and x86_64 Makefiles to arch/x86
Moving the ARCH specific Makefiles for i386 and x86_64 required a litle bit tweaking in the top-lvel Makefile. SRCARCH is now set in the top-level Makefile because we need this info to include the correct arch Makefile. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/x86/Makefile_32.cpu')
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu
new file mode 100644
index 000000000000..e372b584e919
--- /dev/null
+++ b/arch/x86/Makefile_32.cpu
@@ -0,0 +1,47 @@
+# CPU tuning section - shared with UML.
+# Must change only cflags-y (or [yn]), not CFLAGS! That makes a difference for UML.
+#-mtune exists since gcc 3.4
+HAS_MTUNE := $(call cc-option-yn, -mtune=i386)
+ifeq ($(HAS_MTUNE),y)
+tune = $(call cc-option,-mtune=$(1),$(2))
+tune = $(call cc-option,-mcpu=$(1),$(2))
+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) += -march=pentium-mmx
+cflags-$(CONFIG_M686) += -march=i686
+cflags-$(CONFIG_MPENTIUMII) += -march=i686 $(call tune,pentium2)
+cflags-$(CONFIG_MPENTIUMIII) += -march=i686 $(call tune,pentium3)
+cflags-$(CONFIG_MPENTIUMM) += -march=i686 $(call tune,pentium3)
+cflags-$(CONFIG_MPENTIUM4) += -march=i686 $(call tune,pentium4)
+cflags-$(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-$(CONFIG_MK7) += -march=athlon
+cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon)
+cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
+cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,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) += $(call cc-option,-march=c3-2,-march=i686)
+cflags-$(CONFIG_MVIAC7) += -march=i686
+cflags-$(CONFIG_MCORE2) += -march=i686 $(call tune,core2)
+# AMD Elan support
+cflags-$(CONFIG_X86_ELAN) += -march=i486
+# Geode GX1 support
+cflags-$(CONFIG_MGEODEGX1) += -march=pentium-mmx
+# add at the end to overwrite eventual tuning options from earlier
+# cpu entries
+cflags-$(CONFIG_X86_GENERIC) += $(call tune,generic,$(call tune,i686))

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