powerpc/64s: POWER10 CPU Kconfig build option

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

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index aeabcc945110d1ea0000a3b2e4a9cc60c4f057dd..19470d29de163d93dcd29db02a26b3f10e0dfb5c 100644 (file)
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -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)

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 8333c558d932a7a99250dc06241e93746f64c384..0c4eed9aea80623e673e93f370b38f8572fd82cd 100644 (file)
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -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