ppc: Remove CHRP, POWER3 and POWER4 support from arch/ppc

32-bit CHRP machines are now supported only in arch/powerpc, as are
all 64-bit PowerPC processors.  This means that we don't use
Open Firmware on any platform in arch/ppc any more.

This makes PReP support a single-platform option like every other
platform support option in arch/ppc now, thus CONFIG_PPC_MULTIPLATFORM
is gone from arch/ppc.  CONFIG_PPC_PREP is the option that selects
PReP support and is generally what has replaced
CONFIG_PPC_MULTIPLATFORM within arch/ppc.

_machine is all but dead now, being #defined to 0.

Updated Makefiles, comments and Kconfig options generally to reflect
these changes.

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

1 files changed, 24 insertions, 62 deletions

diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 75802ca0f8c7..e9a8f5d1dfcd 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -61,15 +61,15 @@ config 6xx
         select PPC_FPU
         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 POWER3 processor.
-          (For support for more recent 64-bit processors, set ARCH=powerpc.)
+          types (601, 603, 604, 740, 750, 7400), the older Freescale
+          (formerly Motorola) embedded versions (821, 823, 850, 855, 860,
+          52xx, 82xx, 83xx), the IBM embedded versions (403 and 405) and
+          the Book E embedded processors from IBM (44x) and Freescale (85xx).
+          For support for 64-bit processors, set ARCH=powerpc.
           Unless you are building a kernel for one of the embedded processor
-          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.
+          systems, choose 6xx.
+          Also note that because the 52xx, 82xx, & 83xx family have a 603e
+          core, specific support for that chipset is asked later on.
 
 config 40x
         bool "40x"
@@ -77,10 +77,6 @@ config 40x
 config 44x
         bool "44x"
 
-config POWER3
-        select PPC_FPU
-        bool "POWER3"
-
 config 8xx
         bool "8xx"
 
@@ -252,14 +248,9 @@ config PPC601_SYNC_FIX
 source arch/ppc/platforms/4xx/Kconfig
 source arch/ppc/platforms/85xx/Kconfig
 
-config PPC64BRIDGE
-        bool
-        depends on POWER3
-        default y
-
 config PPC_STD_MMU
         bool
-        depends on 6xx || POWER3
+        depends on 6xx
         default y
 
 config NOT_COHERENT_CACHE
@@ -534,8 +525,8 @@ endmenu
 
 choice
         prompt "Machine Type"
-        depends on 6xx || POWER3
-        default PPC_MULTIPLATFORM
+        depends on 6xx
+        default PPC_PREP
         ---help---
           Linux currently supports several different kinds of PowerPC-based
           machines: Apple Power Macintoshes and clones (such as the Motorola
@@ -545,15 +536,14 @@ 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 PReP and CHRP.
+          default option is to build a kernel which works on PReP.
 
-          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.
+          Note that support for Apple and CHRP 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 or CHRP 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 PReP if configuring for a PReP machine.
 
           Select Gemini if configuring for a Synergy Microsystems' Gemini
           series Single Board Computer.  More information is available at:
@@ -562,8 +552,8 @@ choice
           Select APUS if configuring for a PowerUP Amiga.  More information is
           available at: <http://linux-apus.sourceforge.net/>.
 
-config PPC_MULTIPLATFORM
-        bool "CHRP/PReP"
+config PPC_PREP
+        bool "PReP"
 
 config APUS
         bool "Amiga-APUS"
@@ -807,25 +797,6 @@ config CPM2
           you wish to build a kernel for a machine with a CPM2 coprocessor
           on it (826x, 827x, 8560).
 
-config PPC_CHRP
-        bool "Support for CHRP (Common Hardware Reference Platform) machines"
-        depends on PPC_MULTIPLATFORM
-        select PPC_I8259
-        select PPC_INDIRECT_PCI
-        default y
-
-config PPC_PREP
-        bool "Support for PReP (PowerPC Reference Platform) machines"
-        depends on PPC_MULTIPLATFORM
-        select PPC_I8259
-        select PPC_INDIRECT_PCI
-        default y
-
-config PPC_OF
-        bool
-        depends on PPC_CHRP
-        default y
-
 config PPC_GEN550
         bool
         depends on SANDPOINT || SPRUCE || PPLUS || \
@@ -984,14 +955,6 @@ source "mm/Kconfig"
 
 source "fs/Kconfig.binfmt"
 
-config PROC_DEVICETREE
-        bool "Support for Open Firmware device tree in /proc"
-        depends on PPC_OF && PROC_FS
-        help
-          This option adds a device-tree directory under /proc which contains
-          an image of the device tree that the kernel copies from Open
-          Firmware. If unsure, say Y here.
-
 config PREP_RESIDUAL
         bool "Support for PReP Residual Data"
         depends on PPC_PREP
@@ -1184,8 +1147,7 @@ menu "Bus options"
 
 config ISA
         bool "Support for ISA-bus hardware"
-        depends on PPC_PREP || PPC_CHRP
-        select PPC_I8259
+        depends on PPC_PREP
         help
           Find out whether you have ISA slots on your motherboard.  ISA is the
           name of a bus system, i.e. the way the CPU talks to the other stuff
@@ -1195,18 +1157,18 @@ config ISA
 
 config GENERIC_ISA_DMA
         bool
-        depends on POWER3 || 6xx && !CPM2
+        depends on 6xx && !CPM2
         default y
 
 config PPC_I8259
         bool
-        default y if 85xx
+        default y if 85xx || PPC_PREP
         default n
 
 config PPC_INDIRECT_PCI
         bool
         depends on PCI
-        default y if 40x || 44x || 85xx || 83xx
+        default y if 40x || 44x || 85xx || 83xx || PPC_PREP
         default n
 
 config EISA
@@ -1397,7 +1359,7 @@ config CONSISTENT_SIZE
 
 config BOOT_LOAD_BOOL
         bool "Set the boot link/load address"
-        depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
+        depends on ADVANCED_OPTIONS && !PPC_PREP
         help
           This option allows you to set the initial load address of the zImage
           or zImage.initrd file.  This can be useful if you are on a board