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

Move setup of -march to arch/mips/Makefile and follow the design on ARM.
Also add a possibility to chose specific CPU tune options.

Signed-off-by: Wills Wang <wills.wang@live.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
utp
Daniel Schwierzeck 2015-12-26 19:55:37 +01:00
parent 76ada5f8b7
commit 0315a28909
4 changed files with 24 additions and 15 deletions
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12
arch/mips/Kconfig
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@ -43,6 +43,7 @@ config TARGET_DBAU1X00
select SUPPORTS_CPU_MIPS32_R1
select SUPPORTS_CPU_MIPS32_R2
select SYS_MIPS_CACHE_INIT_RAM_LOAD
select MIPS_TUNE_4KC
config TARGET_PB1X00
bool "Support pb1x00"
@ -50,7 +51,7 @@ config TARGET_PB1X00
select SUPPORTS_CPU_MIPS32_R1
select SUPPORTS_CPU_MIPS32_R2
select SYS_MIPS_CACHE_INIT_RAM_LOAD
select MIPS_TUNE_4KC
endchoice
@ -174,6 +175,15 @@ config CPU_MIPS64
bool
default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
config MIPS_TUNE_4KC
bool
config MIPS_TUNE_14KC
bool
config MIPS_TUNE_24KC
bool
config 32BIT
bool

13
arch/mips/Makefile
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@ -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)

6
arch/mips/config.mk
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@ -35,12 +35,6 @@ PLATFORM_LDFLAGS += -m$(64bit-emul)
OBJCOPYFLAGS += -O $(64bit-bfd)
endif
cpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32
cpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2
cpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64
cpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2
PLATFORM_CPPFLAGS += $(cpuflags-y)
PLATFORM_CPPFLAGS += -D__MIPS__
#

8
arch/mips/mach-au1x00/config.mk
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@ -1,8 +0,0 @@
#
# (C) Copyright 2011
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier: GPL-2.0+
#
PLATFORM_CPPFLAGS += -mtune=4kc