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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-11-02 19:51:30 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-11-03 09:47:39 +0100 |
| commit | 7dcef1bb2096a2392b6e4ac3e98c2403e9b59f8e (patch) | |
| tree | 80105b28b83feb0bfd1fc2b0a855fee98178bf9e | |
| parent | a4292fe7cfddd567296596b3ecfe96eec5a10120 (diff) | |
| download | barebox-7dcef1bb2096a2392b6e4ac3e98c2403e9b59f8e.tar.gz barebox-7dcef1bb2096a2392b6e4ac3e98c2403e9b59f8e.tar.xz | |
arm: update cpu tunning
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/Makefile | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm/Makefile b/arch/arm/Makefile index f6605abcf2..87783cb5ed 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -13,6 +13,22 @@ AS += -EL LD += -EL endif +comma = , + +# 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_32v7) :=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) +arch-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) +arch-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 -march=armv4t + +# This selects how we optimise for the processor. +tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi +tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi + +CPPFLAGS += $(arch-y) $(tune-y) + # Machine directory name. This list is sorted alphanumerically # by CONFIG_* macro name. machine-$(CONFIG_ARCH_AT91) := at91 @@ -81,11 +97,6 @@ archprepare: maketools PHONY += maketools -# Add architecture specific flags -ifeq ($(CONFIG_CPU_V7),y) -CPPFLAGS += -march=armv7a -endif - ifneq ($(board-y),) BOARD := board/$(board-y)/ else |