[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>

3 files changed, 9 insertions, 282 deletions

diff --git a/arch/ppc/boot/openfirmware/Makefile b/arch/ppc/boot/openfirmware/Makefile
index 83a6433..2a411ec 100644
--- a/arch/ppc/boot/openfirmware/Makefile
+++ b/arch/ppc/boot/openfirmware/Makefile
@@ -21,26 +21,16 @@ bootlib	:= $(boot)/lib
 of1275	:= $(boot)/of1275
 images	:= $(boot)/images
 
-OBJCOPY_ARGS	:= -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment
-COFF_LD_ARGS	:= -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x00500000 \
-			-Bstatic
 CHRP_LD_ARGS	:= -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x00800000
-NEWWORLD_LD_ARGS:= -T $(srctree)/$(boot)/ld.script -e _start -Ttext 0x01000000
 
 COMMONOBJS	:= start.o misc.o common.o
-COFFOBJS	:= coffcrt0.o $(COMMONOBJS) coffmain.o
 CHRPOBJS	:= crt0.o     $(COMMONOBJS) chrpmain.o
-NEWWORLDOBJS	:= crt0.o     $(COMMONOBJS) newworldmain.o
 
-targets 	:= $(COFFOBJS) $(CHRPOBJS) $(NEWWORLDOBJS) dummy.o
-COFFOBJS	:= $(addprefix $(obj)/, $(COFFOBJS))
+targets 	:= $(CHRPOBJS) dummy.o
 CHRPOBJS	:= $(addprefix $(obj)/, $(CHRPOBJS))
-NEWWORLDOBJS	:= $(addprefix $(obj)/, $(NEWWORLDOBJS))
 
 LIBS		:= lib/lib.a $(bootlib)/lib.a $(of1275)/lib.a $(common)/lib.a
 
-HACKCOFF := $(utils)/hack-coff
-
 ifdef CONFIG_SMP
 END := .smp
 endif
@@ -72,56 +62,11 @@ targets += image.initrd.o
 $(obj)/image.initrd.o: $(obj)/image.o $(images)/ramdisk.image.gz FORCE
 	$(call if_changed,genimage-initrd)
 
-# Create the note section for New-World PowerMacs.
-quiet_cmd_mknote = MKNOTE  $@
-     cmd_mknote  = $(utils)/mknote > $@
-targets		+= note
-$(obj)/note: $(utils)/mknote FORCE
-	$(call if_changed,mknote)
-
 
-$(obj)/coffcrt0.o: EXTRA_AFLAGS := -DXCOFF
-targets += coffcrt0.o crt0.o
-$(obj)/coffcrt0.o $(obj)/crt0.o: $(common)/crt0.S FORCE
+targets += crt0.o
+$(obj)/crt0.o: $(common)/crt0.S FORCE
 	$(call if_changed_dep,as_o_S)
 
-quiet_cmd_gencoffb = COFF    $@
-      cmd_gencoffb = $(LD) -o $@ $(COFF_LD_ARGS) $(COFFOBJS) $< $(LIBS) && \
-                     $(OBJCOPY) $@ $@ -R .comment $(del-ramdisk-sec)
-targets += coffboot
-$(obj)/coffboot: $(obj)/image.o $(COFFOBJS) $(LIBS) $(srctree)/$(boot)/ld.script FORCE
-	$(call if_changed,gencoffb)
-targets += coffboot.initrd
-$(obj)/coffboot.initrd: $(obj)/image.initrd.o $(COFFOBJS) $(LIBS) \
-			$(srctree)/$(boot)/ld.script FORCE
-	$(call if_changed,gencoffb)
-
-
-quiet_cmd_gen-coff = COFF    $@
-      cmd_gen-coff = $(OBJCOPY) $(OBJCOPY_ARGS) $< $@ && \
-			$(HACKCOFF) $@ && \
-			ln -sf $(notdir $@) $(images)/zImage$(initrd).pmac
-
-$(images)/vmlinux.coff: $(obj)/coffboot
-	$(call cmd,gen-coff)
-
-$(images)/vmlinux.initrd.coff: $(obj)/coffboot.initrd
-	$(call cmd,gen-coff)
-
-quiet_cmd_gen-elf-pmac = ELF     $@
-      cmd_gen-elf-pmac = $(LD) $(NEWWORLD_LD_ARGS) -o $@ \
-				$(NEWWORLDOBJS) $(LIBS) $< && \
-			$(OBJCOPY) $@ $@ --add-section=.note=$(obj)/note \
-					 -R .comment $(del-ramdisk-sec)
-
-$(images)/vmlinux.elf-pmac: $(obj)/image.o $(NEWWORLDOBJS) $(LIBS) \
-			$(obj)/note $(srctree)/$(boot)/ld.script
-	$(call cmd,gen-elf-pmac)
-$(images)/vmlinux.initrd.elf-pmac: $(obj)/image.initrd.o $(NEWWORLDOBJS) \
-				   $(LIBS) $(obj)/note \
-				   $(srctree)/$(boot)/ld.script
-	$(call cmd,gen-elf-pmac)
-
 quiet_cmd_gen-chrp = CHRP    $@
       cmd_gen-chrp = $(LD) $(CHRP_LD_ARGS) -o $@ $(CHRPOBJS) $< $(LIBS) && \
 			$(OBJCOPY) $@ $@ -R .comment $(del-ramdisk-sec)
@@ -139,46 +84,23 @@ $(images)/zImage.chrp-rs6k $(images)/zImage.initrd.chrp-rs6k: \
 	%-rs6k: %
 	$(call cmd,addnote)
 
-quiet_cmd_gen-miboot = GEN     $@
-      cmd_gen-miboot = $(OBJCOPY) $(OBJCOPY_ARGS) \
-		       --add-section=$1=$(word 2, $^) $< $@
-$(images)/miboot.image: $(obj)/dummy.o $(images)/vmlinux.gz
-	$(call cmd,gen-miboot,image)
-
-$(images)/miboot.initrd.image: $(images)/miboot.image $(images)/ramdisk.image.gz
-	$(call cmd,gen-miboot,initrd)
-
 # The targets used on the make command-line
 
 .PHONY: zImage zImage.initrd
-zImage:		 $(images)/vmlinux.coff 	\
-		 $(images)/vmlinux.elf-pmac	\
-		 $(images)/zImage.chrp		\
-		 $(images)/zImage.chrp-rs6k	\
-		 $(images)/miboot.image
+zImage:		 $(images)/zImage.chrp		\
+		 $(images)/zImage.chrp-rs6k
 	@echo '  kernel: $@ is ready ($<)'
-zImage.initrd:	 $(images)/vmlinux.initrd.coff 		\
-		 $(images)/vmlinux.initrd.elf-pmac	\
-		 $(images)/zImage.initrd.chrp		\
-		 $(images)/zImage.initrd.chrp-rs6k	\
-		 $(images)/miboot.initrd.image
+zImage.initrd:	 $(images)/zImage.initrd.chrp		\
+		 $(images)/zImage.initrd.chrp-rs6k
 	@echo '  kernel: $@ is ready ($<)'
 
 TFTPIMAGE	:= /tftpboot/zImage
 
 .PHONY: znetboot znetboot.initrd
-znetboot:	$(images)/vmlinux.coff		\
-		$(images)/vmlinux.elf-pmac	\
-		$(images)/zImage.chrp
-	cp $(images)/vmlinux.coff     $(TFTPIMAGE).pmac$(END)
-	cp $(images)/vmlinux.elf-pmac $(TFTPIMAGE).pmac$(END).elf
+znetboot:	$(images)/zImage.chrp
 	cp $(images)/zImage.chrp      $(TFTPIMAGE).chrp$(END)
 	@echo '  kernel: $@ is ready ($<)'
-znetboot.initrd:$(images)/vmlinux.initrd.coff		\
-		$(images)/vmlinux.initrd.elf-pmac	\
-		$(images)/zImage.initrd.chrp
-	cp $(images)/vmlinux.initrd.coff     $(TFTPIMAGE).pmac$(END)
-	cp $(images)/vmlinux.initrd.elf-pmac $(TFTPIMAGE).pmac$(END).elf
+znetboot.initrd:$(images)/zImage.initrd.chrp
 	cp $(images)/zImage.initrd.chrp      $(TFTPIMAGE).chrp$(END)
 	@echo '  kernel: $@ is ready ($<)'
 
diff --git a/arch/ppc/boot/openfirmware/coffmain.c b/arch/ppc/boot/openfirmware/coffmain.c
deleted file mode 100644
index 2da8855..0000000
--- a/arch/ppc/boot/openfirmware/coffmain.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) Paul Mackerras 1997.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/string.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-
-#include "nonstdio.h"
-#include "of1275.h"
-
-/* Passed from the linker */
-extern char __image_begin, __image_end;
-extern char __ramdisk_begin[], __ramdisk_end;
-extern char _start, _end;
-
-extern char image_data[], initrd_data[];
-extern int initrd_len, image_len;
-extern unsigned int heap_max;
-extern void flush_cache(void *start, unsigned int len);
-extern void gunzip(void *, int, unsigned char *, int *);
-extern void make_bi_recs(unsigned long addr, char *name, unsigned int mach,
-		unsigned int progend);
-extern void setup_bats(unsigned long start);
-
-char *avail_ram;
-char *begin_avail, *end_avail;
-char *avail_high;
-
-#define SCRATCH_SIZE	(128 << 10)
-
-static char heap[SCRATCH_SIZE];
-
-static unsigned long ram_start = 0;
-static unsigned long ram_end = 0x1000000;
-
-static unsigned long prog_start = 0x800000;
-static unsigned long prog_size = 0x700000;
-
-typedef void (*kernel_start_t)(int, int, void *);
-
-void boot(int a1, int a2, void *prom)
-{
-    unsigned sa, len;
-    void *dst;
-    unsigned char *im;
-    unsigned initrd_start, initrd_size;
-
-    printf("coffboot starting: loaded at 0x%p\n", &_start);
-    setup_bats(ram_start);
-
-    initrd_size = (char *)(&__ramdisk_end) - (char *)(&__ramdisk_begin);
-    if (initrd_size) {
-	initrd_start = (ram_end - initrd_size) & ~0xFFF;
-	a1 = initrd_start;
-	a2 = initrd_size;
-	claim(initrd_start, ram_end - initrd_start, 0);
-	printf("initial ramdisk moving 0x%x <- 0x%p (%x bytes)\n\r",
-	       initrd_start, (char *)(&__ramdisk_begin), initrd_size);
-	memcpy((char *)initrd_start, (char *)(&__ramdisk_begin), initrd_size);
-	prog_size = initrd_start - prog_start;
-    } else
-	a2 = 0xdeadbeef;
-
-    im = (char *)(&__image_begin);
-    len = (char *)(&__image_end) - (char *)(&__image_begin);
-    /* claim 4MB starting at PROG_START */
-    claim(prog_start, prog_size, 0);
-    map(prog_start, prog_start, prog_size);
-    dst = (void *) prog_start;
-    if (im[0] == 0x1f && im[1] == 0x8b) {
-	/* set up scratch space */
-	begin_avail = avail_high = avail_ram = heap;
-	end_avail = heap + sizeof(heap);
-	printf("heap at 0x%p\n", avail_ram);
-	printf("gunzipping (0x%p <- 0x%p:0x%p)...", dst, im, im+len);
-	gunzip(dst, prog_size, im, &len);
-	printf("done %u bytes\n", len);
-	printf("%u bytes of heap consumed, max in use %u\n",
-	       avail_high - begin_avail, heap_max);
-    } else {
-	memmove(dst, im, len);
-    }
-
-    flush_cache(dst, len);
-    make_bi_recs(((unsigned long) dst + len), "coffboot", _MACH_Pmac,
-		    (prog_start + prog_size));
-
-    sa = (unsigned long)prog_start;
-    printf("start address = 0x%x\n", sa);
-
-    (*(kernel_start_t)sa)(a1, a2, prom);
-
-    printf("returned?\n");
-
-    pause();
-}
diff --git a/arch/ppc/boot/openfirmware/newworldmain.c b/arch/ppc/boot/openfirmware/newworldmain.c
deleted file mode 100644
index fa8a8f9..0000000
--- a/arch/ppc/boot/openfirmware/newworldmain.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (C) Paul Mackerras 1997.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/string.h>
-#include "nonstdio.h"
-#include "of1275.h"
-#include <asm/processor.h>
-#include <asm/page.h>
-
-/* Passed from the linker */
-extern char __image_begin, __image_end;
-extern char __ramdisk_begin[], __ramdisk_end;
-extern char _start, _end;
-
-extern unsigned int heap_max;
-extern void flush_cache(void *start, unsigned int len);
-extern void gunzip(void *, int, unsigned char *, int *);
-extern void make_bi_recs(unsigned long addr, char *name, unsigned int mach,
-		unsigned int progend);
-
-char *avail_ram;
-char *begin_avail, *end_avail;
-char *avail_high;
-
-
-#define RAM_END		(16 << 20)
-
-#define PROG_START	0x00010000
-#define PROG_SIZE	0x007f0000
-
-#define SCRATCH_SIZE	(128 << 10)
-
-typedef void (*kernel_start_t)(int, int, void *);
-
-void boot(int a1, int a2, void *prom)
-{
-    unsigned sa, len;
-    void *dst;
-    unsigned char *im;
-    unsigned initrd_start, initrd_size;
-
-    printf("chrpboot starting: loaded at 0x%p\n", &_start);
-
-    initrd_size = (char *)(&__ramdisk_end) - (char *)(&__ramdisk_begin);
-    if (initrd_size) {
-	initrd_start = (RAM_END - initrd_size) & ~0xFFF;
-	a1 = initrd_start;
-	a2 = initrd_size;
-	claim(initrd_start, RAM_END - initrd_start, 0);
-	printf("initial ramdisk moving 0x%x <- 0x%p (%x bytes)\n\r",
-	       initrd_start, (char *)(&__ramdisk_begin), initrd_size);
-	memcpy((char *)initrd_start, (char *)(&__ramdisk_begin), initrd_size);
-    } else
-	a2 = 0xdeadbeef;
-
-    im = (char *)(&__image_begin);
-    len = (char *)(&__image_end) - (char *)(&__image_begin);
-    /* claim 3MB starting at PROG_START */
-    claim(PROG_START, PROG_SIZE, 0);
-    dst = (void *) PROG_START;
-    if (im[0] == 0x1f && im[1] == 0x8b) {
-	/* claim some memory for scratch space */
-	avail_ram = (char *) claim(0, SCRATCH_SIZE, 0x10);
-	begin_avail = avail_high = avail_ram;
-	end_avail = avail_ram + SCRATCH_SIZE;
-	printf("heap at 0x%p\n", avail_ram);
-	printf("gunzipping (0x%p <- 0x%p:0x%p)...", dst, im, im+len);
-	gunzip(dst, PROG_SIZE, im, &len);
-	printf("done %u bytes\n", len);
-	printf("%u bytes of heap consumed, max in use %u\n",
-	       avail_high - begin_avail, heap_max);
-	release(begin_avail, SCRATCH_SIZE);
-    } else {
-	memmove(dst, im, len);
-    }
-
-    flush_cache(dst, len);
-    make_bi_recs(((unsigned long) dst + len), "chrpboot", _MACH_Pmac,
-		    (PROG_START + PROG_SIZE));
-
-    sa = (unsigned long)PROG_START;
-    printf("start address = 0x%x\n", sa);
-
-    (*(kernel_start_t)sa)(a1, a2, prom);
-
-    printf("returned?\n");
-
-    pause();
-}