[PATCH] ppc: Remove powermac support from ARCH=ppc

This makes it possible to build kernels for PReP and/or CHRP
with ARCH=ppc by removing the (non-building) powermac support.
It's now also possible to select PReP and CHRP independently.
Powermac users should now build with ARCH=powerpc instead of
ARCH=ppc.  (This does mean that it is no longer possible to
build a 32-bit kernel for a G5.)

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 22 insertions, 51 deletions

diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index d65810108bc3..11899f06bf06 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -58,11 +58,11 @@ config 6xx
         help
           There are four types of PowerPC chips supported.  The more common
           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
-          versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the IBM embedded
-          versions (403 and 405) and the high end 64 bit Power processors
-          (POWER 3, POWER4, and IBM 970 also known as G5)
+          versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the IBM
+          embedded versions (403 and 405) and the POWER3 processor.
+          (For support for more recent 64-bit processors, set ARCH=powerpc.)
           Unless you are building a kernel for one of the embedded processor
-          systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
+          systems or a POWER3-based IBM RS/6000, choose 6xx.
           Note that the kernel runs in 32-bit mode even on 64-bit chips.
           Also note that because the 52xx, 82xx, & 83xx family has a 603e core,
           specific support for that chipset is asked later on.
@@ -77,10 +77,6 @@ config POWER3
         select PPC_FPU
         bool "POWER3"
 
-config POWER4
-        select PPC_FPU
-        bool "POWER4 and 970 (G5)"
-
 config 8xx
         bool "8xx"
 
@@ -123,7 +119,7 @@ config PHYS_64BIT
 
 config ALTIVEC
         bool "AltiVec Support"
-        depends on 6xx || POWER4
+        depends on 6xx
         depends on !8260 && !83xx
         ---help---
           This option enables kernel support for the Altivec extensions to the
@@ -235,18 +231,9 @@ config KEXEC
 
 source "drivers/cpufreq/Kconfig"
 
-config CPU_FREQ_PMAC
-        bool "Support for Apple PowerBooks"
-        depends on CPU_FREQ && ADB_PMU
-        select CPU_FREQ_TABLE
-        help
-          This adds support for frequency switching on Apple PowerBooks,
-          this currently includes some models of iBook & Titanium
-          PowerBook.
-
 config PPC601_SYNC_FIX
         bool "Workarounds for PPC601 bugs"
-        depends on 6xx && (PPC_PREP || PPC_PMAC)
+        depends on 6xx && PPC_PREP
         help
           Some versions of the PPC601 (the first PowerPC chip) have bugs which
           mean that extra synchronization instructions are required near
@@ -258,26 +245,17 @@ config PPC601_SYNC_FIX
 
           If in doubt, say Y here.
 
-config HOTPLUG_CPU
-        bool "Support for enabling/disabling CPUs"
-        depends on SMP && HOTPLUG && EXPERIMENTAL && PPC_PMAC
-        ---help---
-          Say Y here to be able to disable and re-enable individual
-          CPUs at runtime on SMP machines.
-
-          Say N if you are unsure.
-
 source arch/ppc/platforms/4xx/Kconfig
 source arch/ppc/platforms/85xx/Kconfig
 
 config PPC64BRIDGE
         bool
-        depends on POWER3 || POWER4
+        depends on POWER3
         default y
 
 config PPC_STD_MMU
         bool
-        depends on 6xx || POWER3 || POWER4
+        depends on 6xx || POWER3
         default y
 
 config NOT_COHERENT_CACHE
@@ -505,7 +483,7 @@ endchoice
 
 choice
         prompt "Machine Type"
-        depends on 6xx || POWER3 || POWER4
+        depends on 6xx || POWER3
         default PPC_MULTIPLATFORM
         ---help---
           Linux currently supports several different kinds of PowerPC-based
@@ -516,11 +494,15 @@ choice
           Platform) machines (including all of the recent IBM RS/6000 and
           pSeries machines), and several embedded PowerPC systems containing
           4xx, 6xx, 7xx, 8xx, 74xx, and 82xx processors.  Currently, the
-          default option is to build a kernel which works on the first three.
+          default option is to build a kernel which works on PReP and CHRP.
 
-          Select CHRP/PowerMac/PReP if configuring for an IBM RS/6000 or
-          pSeries machine, a Power Macintosh (including iMacs, iBooks and
-          Powerbooks), or a PReP machine.
+          Note that support for Apple machines is now only available with
+          ARCH=powerpc, and has been removed from this menu.  If you wish
+          to build a kernel for an Apple machine, exit this configuration
+          process and re-run it with ARCH=powerpc.
+
+          Select CHRP/PReP if configuring for an IBM RS/6000 or
+          pSeries machine, or a PReP machine.
 
           Select Gemini if configuring for a Synergy Microsystems' Gemini
           series Single Board Computer.  More information is available at:
@@ -530,7 +512,7 @@ choice
           available at: <http://linux-apus.sourceforge.net/>.
 
 config PPC_MULTIPLATFORM
-        bool "CHRP/PowerMac/PReP"
+        bool "CHRP/PReP"
 
 config APUS
         bool "Amiga-APUS"
@@ -768,25 +750,14 @@ config CPM2
           on it (826x, 827x, 8560).
 
 config PPC_CHRP
-        bool
+        bool "Support for CHRP (Common Hardware Reference Platform) machines"
         depends on PPC_MULTIPLATFORM
         select PPC_I8259
         select PPC_INDIRECT_PCI
         default y
 
-config PPC_PMAC
-        bool
-        depends on PPC_MULTIPLATFORM
-        select PPC_INDIRECT_PCI
-        default y
-
-config PPC_PMAC64
-        bool
-        depends on PPC_PMAC && POWER4
-        default y
-
 config PPC_PREP
-        bool
+        bool "Support for PReP (PowerPC Reference Platform) machines"
         depends on PPC_MULTIPLATFORM
         select PPC_I8259
         select PPC_INDIRECT_PCI
@@ -794,7 +765,7 @@ config PPC_PREP
 
 config PPC_OF
         bool
-        depends on PPC_PMAC || PPC_CHRP
+        depends on PPC_CHRP
         default y
 
 config PPC_GEN550
@@ -1166,7 +1137,7 @@ config ISA
 
 config GENERIC_ISA_DMA
         bool
-        depends on POWER3 || POWER4 || 6xx && !CPM2
+        depends on POWER3 || 6xx && !CPM2
         default y
 
 config PPC_I8259