Commit f7a0bf7d authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman

powerpc/32s: add an option to exclusively select powerpc 601

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: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d644eaf7dff8cc149260066802af230bdf34fded.1566834712.git.christophe.leroy@c-s.fr
parent 3bbd2343
...@@ -6,6 +6,9 @@ config PPC64 ...@@ -6,6 +6,9 @@ config PPC64
This option selects whether a 32-bit or a 64-bit kernel This option selects whether a 32-bit or a 64-bit kernel
will be built. will be built.
config PPC_BOOK3S_32
bool
menu "Processor support" menu "Processor support"
choice choice
prompt "Processor Type" prompt "Processor Type"
...@@ -21,13 +24,20 @@ choice ...@@ -21,13 +24,20 @@ choice
If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx. If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
config PPC_BOOK3S_32 config PPC_BOOK3S_6xx
bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx except 601"
select PPC_BOOK3S_32
select PPC_FPU select PPC_FPU
select PPC_HAVE_PMU_SUPPORT select PPC_HAVE_PMU_SUPPORT
select PPC_HAVE_KUEP select PPC_HAVE_KUEP
select PPC_HAVE_KUAP 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 config PPC_85xx
bool "Freescale 85xx" bool "Freescale 85xx"
select E500 select E500
......
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