powerpc: Introduce CONFIG_PPC_BOOK3S

This patch introduce a new Kconfig option, CONFIG_PPC_BOOK3S
that represents processors that are compliant with the "classic"
(aka "server") variant of the PowerPC architecture.

It replaces CONFIG_6xx on 32-bit (though the symbol is still
defined for compatibility) and encompass all currently supported
64-bit processors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 915a7ac..25f8a9c 100644 (file)
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -9,7 +9,6 @@ menu "Processor support"
 choice
        prompt "Processor Type"
        depends on PPC32
-       default 6xx
        help
          There are five families of 32 bit PowerPC chips supported.
          The most common ones are the desktop and server CPUs (601, 603,
@@ -21,7 +20,7 @@ choice
 
          If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
 
-config 6xx
+config PPC_BOOK3S
        bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
        select PPC_FPU
 
@@ -57,13 +56,11 @@ config E200
 
 endchoice
 
-# Until we have a choice of exclusive CPU types on 64-bit, we always
-# use PPC_BOOK3S. On 32-bit, this is equivalent to 6xx which is
-# "classic" MMU
-
 config PPC_BOOK3S
-       def_bool y
-       depends on PPC64 || 6xx
+       default y
+       depends on PPC64
+       select PPC_FPU
+
 
 config POWER4_ONLY
        bool "Optimize for POWER4"
@@ -74,6 +71,10 @@ config POWER4_ONLY
          The resulting binary will not work on POWER3 or RS64 processors
          when compiled with binutils 2.15 or later.
 
+config 6xx
+       def_bool y
+       depends on PPC32 && PPC_BOOK3S
+
 config POWER3
        bool
        depends on PPC64 && PPC_BOOK3S
@@ -202,9 +203,8 @@ config SPE
          If in doubt, say Y here.
 
 config PPC_STD_MMU
-       bool
-       depends on 6xx || PPC64
-       default y
+       def_bool y
+       depends on PPC_BOOK3S
 
 config PPC_STD_MMU_32
        def_bool y