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powerpc/64s: POWER10 CPU Kconfig build option

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This adds basic POWER10_CPU option, which builds with -mcpu=power10.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220923033004.536127-1-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2022-09-23 13:30:04 +10:00 committed by Michael Ellerman
parent 465dda9d32
commit 4b2a9315f2
2 changed files with 12 additions and 1 deletions
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7
arch/powerpc/Makefile
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@ -192,9 +192,14 @@ ifdef CONFIG_476FPE_ERR46
-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
endif
# No AltiVec or VSX instructions when building kernel
# No prefix or pcrel
KBUILD_CFLAGS += $(call cc-option,-mno-prefixed)
KBUILD_CFLAGS += $(call cc-option,-mno-pcrel)
# No AltiVec or VSX or MMA instructions when building kernel
KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
KBUILD_CFLAGS += $(call cc-option,-mno-mma)
# No SPE instruction when building kernel
# (We use all available options to help semi-broken compilers)

6
arch/powerpc/platforms/Kconfig.cputype
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@ -172,6 +172,11 @@ config POWER9_CPU
depends on PPC_BOOK3S_64
select ARCH_HAS_FAST_MULTIPLIER
config POWER10_CPU
bool "POWER10"
depends on PPC_BOOK3S_64
select ARCH_HAS_FAST_MULTIPLIER
config E5500_CPU
bool "Freescale e5500"
depends on PPC64 && PPC_E500
@ -240,6 +245,7 @@ config TARGET_CPU
default "power7" if POWER7_CPU
default "power8" if POWER8_CPU
default "power9" if POWER9_CPU
default "power10" if POWER10_CPU
default "405" if 405_CPU
default "440" if 440_CPU
default "464" if 464_CPU