Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH 1/6] powerpc/32s: add an option to exclusively select powerpc 601 | Date | Mon, 26 Aug 2019 15:52:13 +0000 (UTC) |
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Powerpc 601 is rather old powerpc which as some important limitations compared to other book3s/32 powerpcs: - No Timebase. - Common BATs for instruction and data. - No execution protection in segment registers. - No RI bit in MSR - ...
It is starting to be difficult and cumbersome to maintain kernels that are compatible both with 601 and other 6xx cores.
Create a compiletime option to exclusively select either powerpc 601 or other 6xx.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/platforms/Kconfig.cputype | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 56a7c814160d..68c5cc075bfc 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -6,6 +6,9 @@ config PPC64 This option selects whether a 32-bit or a 64-bit kernel will be built. +config PPC_BOOK3S_32 + bool + menu "Processor support" choice prompt "Processor Type" @@ -21,13 +24,20 @@ choice If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. -config PPC_BOOK3S_32 - bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" +config PPC_BOOK3S_6xx + bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx except 601" + select PPC_BOOK3S_32 select PPC_FPU select PPC_HAVE_PMU_SUPPORT select PPC_HAVE_KUEP select PPC_HAVE_KUAP +config PPC_BOOK3S_601 + bool "PowerPC 601" + select PPC_BOOK3S_32 + select PPC_FPU + select PPC_HAVE_KUAP + config PPC_85xx bool "Freescale 85xx" select E500 -- 2.13.3
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