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| author |   Nicholas Piggin <npiggin@gmail.com> | 2022-09-21 11:41:03 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-09-28 19:22:10 +1000 |
| commit | 7fd123e544886bf04fa853869efe55cb3f22d0c0 (patch) | |
| tree | 555194e7b8ac19dfd6350a996cfda0f2a9443493 /arch/powerpc/platforms/Kconfig.cputype | |
| parent | powerpc/64s: Fix GENERIC_CPU build flags for PPC970 / G5 (diff) | |
| download | linux-dev-7fd123e544886bf04fa853869efe55cb3f22d0c0.tar.xz linux-dev-7fd123e544886bf04fa853869efe55cb3f22d0c0.zip | |
powerpc/64s: update cpu selection options
Update the 64s GENERIC_CPU option. POWER4 support has been dropped, so
make that clear in the option name. The POWER5_CPU option is dropped
because it's uncommon, and GENERIC_CPU covers it.
-mtune= before power8 is dropped because the minimum gcc version
supports power8, and tuning is made consistent between big and little
endian.
A 970 option is added for PowerPC 970 / G5 because they still have a
user base, and -mtune=power8 does not generate good code for the 970.
This also updates the ISA versions document to add Power4/Power4+
because I didn't realise Power4+ used 2.01.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220921014103.587954-2-npiggin@gmail.com
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 51059af63856..8333c558d932 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -126,7 +126,7 @@ choice If unsure, select Generic. config GENERIC_CPU - bool "Generic (POWER4 and above)" + bool "Generic (POWER5 and PowerPC 970 and above)" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN select PPC_64S_HASH_MMU @@ -145,8 +145,8 @@ config CELL_CPU depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN select PPC_64S_HASH_MMU -config POWER5_CPU - bool "POWER5" +config PPC_970_CPU + bool "PowerPC 970 (including PowerPC G5)" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN select PPC_64S_HASH_MMU @@ -235,7 +235,7 @@ config TARGET_CPU string depends on TARGET_CPU_BOOL default "cell" if CELL_CPU - default "power5" if POWER5_CPU + default "970" if PPC_970_CPU default "power6" if POWER6_CPU default "power7" if POWER7_CPU default "power8" if POWER8_CPU |