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powerpc: Make CPU selection logic generic in Makefile 

At the time being, when adding a new CPU for selection, both
Kconfig.cputype and Makefile have to be modified.

This patch moves into Kconfig.cputype the name of the CPU to me
passed to the -mcpu= argument.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Rename the option to TARGET_CPU to echo the gcc documentation]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2018-06-07 10:10:18 +00:00 committed by Michael Ellerman
parent badf436f6f
commit cc62d20ce4
2 changed files with 16 additions and 7 deletions
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8
arch/powerpc/Makefile
View File

@ -164,13 +164,7 @@ ifdef CONFIG_MPROFILE_KERNEL
CC_FLAGS_FTRACE := -pg -mprofile-kernel
endif
CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8)
CFLAGS-$(CONFIG_POWER9_CPU) += $(call cc-option,-mcpu=power9)
CFLAGS-$(CONFIG_PPC_8xx) += $(call cc-option,-mcpu=860)
CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU))
# Altivec option not allowed with e500mc64 in GCC.
ifdef CONFIG_ALTIVEC

15
arch/powerpc/platforms/Kconfig.cputype
View File

@ -139,6 +139,21 @@ config E6500_CPU
endchoice
config TARGET_CPU_BOOL
bool
default !GENERIC_CPU
config TARGET_CPU
string
depends on TARGET_CPU_BOOL
default "cell" if CELL_CPU
default "power5" if POWER5_CPU
default "power6" if POWER6_CPU
default "power7" if POWER7_CPU
default "power8" if POWER8_CPU
default "power9" if POWER9_CPU
default "860" if PPC_8xx
config PPC_BOOK3S
def_bool y
depends on PPC_BOOK3S_32 || PPC_BOOK3S_64