MIPS: Kconfig: optimize gcc -march and -mtune setup

[u-boot] / arch / mips / Makefile

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 6a9f798d5677c0cc523ed35a8d925203ce72a0c3..90cd5906c6af06834915cc594a09f6d698080400 100644 (file)
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -13,3 +13,16 @@ machdirs := $(patsubst %,arch/mips/mach-%/,$(machine-y))
 libs-y += $(machdirs)
 
 PLATFORM_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs))
+
+# Optimize for MIPS architectures
+arch-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32
+arch-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2
+arch-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64
+arch-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2
+
+# Allow extra optimization for specific CPUs/SoCs
+tune-$(CONFIG_MIPS_TUNE_4KC) += -mtune=4kc
+tune-$(CONFIG_MIPS_TUNE_14KC) += -mtune=14kc
+tune-$(CONFIG_MIPS_TUNE_24KC) += -mtune=24kc
+
+PLATFORM_CPPFLAGS += $(arch-y) $(tune-y)