[RFC PATCH 6/7] powerpc/64s: POWER10 CPU Kconfig build option
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2022-09-19 14:06:24
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
This adds basic POWER10_CPU option, which builds with -mcpu=power10. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/Makefile | 7 ++++++- arch/powerpc/platforms/Kconfig.cputype | 8 +++++++- 2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 471ef14f8574..8c233f0894ba 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile@@ -193,9 +193,14 @@ 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)
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 4bf9af6a6eb5..9d4d54fea081 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype@@ -84,7 +84,7 @@ choice help There are two families of 64 bit PowerPC chips supported. The most common ones are the desktop and server CPUs - (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9 ...) + (POWER5, 970, POWER5+, POWER6, POWER7, POWER8, POWER9, ...) The other are the "embedded" processors compliant with the "Book 3E" variant of the architecture
@@ -171,6 +171,11 @@ 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 && E500
@@ -239,6 +244,7 @@ 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
--
2.37.2