- added description of djurban's branch

[packages/kernel.git] / 2.2.21-ppc_10.patch

diff -urN linux.orig/Makefile linux/Makefile
--- linux.orig/Makefile	Tue Jun 11 19:39:18 2002
+++ linux/Makefile	Fri Jul 12 18:41:07 2002
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 2
 SUBLEVEL = 21
-EXTRAVERSION = 
+EXTRAVERSION = ppc10
 
 ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e s/arm.*/arm/ -e s/sa110/arm/)
 
diff -urN linux.orig/arch/ppc/boot/Makefile linux/arch/ppc/boot/Makefile
--- linux.orig/arch/ppc/boot/Makefile	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/boot/Makefile	Fri Jul 12 19:00:55 2002
@@ -69,7 +69,7 @@
 zvmlinux.initrd: zvmlinux
 	$(LD) $(ZLINKFLAGS) -o zvmlinux.initrd.tmp $(OBJECTS)
 	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
-		--add-section=initrd=../coffboot/ramdisk.image.gz \
+		--add-section=initrd=ramdisk.image.gz \
 		--add-section=image=../coffboot/vmlinux.gz \
 		zvmlinux.initrd.tmp zvmlinux.initrd
 	$(CC) $(CFLAGS) -DINITRD_OFFSET=`sh offset $(OBJDUMP) zvmlinux.initrd initrd` \
@@ -79,7 +79,7 @@
 		-c -o misc.o misc.c
 	$(LD) $(ZLINKFLAGS) -o zvmlinux.initrd.tmp $(OBJECTS)
 	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
-		--add-section=initrd=../coffboot/ramdisk.image.gz \
+		--add-section=initrd=ramdisk.image.gz \
 		--add-section=image=../coffboot/vmlinux.gz \
 		zvmlinux.initrd.tmp $@
 	rm zvmlinux.initrd.tmp
diff -urN linux.orig/arch/ppc/coffboot/Makefile linux/arch/ppc/coffboot/Makefile
--- linux.orig/arch/ppc/coffboot/Makefile	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/Makefile	Thu Jul 11 15:43:29 2002
@@ -9,13 +9,12 @@
 LD	= $(CROSS_COMPILE)ld
 CFLAGS	= $(CPPFLAGS) -O -fno-builtin -I$(HPATH)
 OBJCOPY = $(CROSS_COMPILE)objcopy
-OBJCOPY_ARGS = -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment
-COFF_LD_ARGS = -e _start -T ld.script -Ttext 500000 -Tdata 510000 -Bstatic
-CHRP_LD_ARGS = -Ttext 0x01000000
+OBJCOPY_ARGS = -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment \
+	--add-section=image=vmlinux.gz
+LD_ARGS = -e _start -T ld.script -Ttext 500000 -Tdata 510000 -Bstatic
 GZ = gzip -9
 
-COFFOBJS = coffcrt0.o start.o coffmain.o misc.o string.o zlib.o image.o
-CHRPOBJS = crt0.o start.o chrpmain.o misc.o string.o zlib.o image.o
+OBJS = crt0.o start.o main.o misc.o string.o zlib.o
 LIBS = $(TOPDIR)/lib/lib.a
 
 ifeq ($(CONFIG_PPC64),y)
@@ -34,81 +33,39 @@
 hack-coff: hack-coff.c
 	$(HOSTCC) $(HOSTCFLAGS) -o hack-coff hack-coff.c
 
-znetboot: vmlinux.coff zImage vmlinux.elf
-	cp vmlinux.coff $(TFTPIMAGE)
-	cp vmlinux.elf $(TFTPIMAGE).elf
-
-znetboot.initrd: vmlinux.coff.initrd vmlinux.elf.initrd
-	cp vmlinux.coff.initrd $(TFTPIMAGE)
-	cp vmlinux.elf.initrd $(TFTPIMAGE).elf
-
 floppy: zImage
 #	mount -t hfs /dev/fd0 /mnt
 #	cp vmlinux.coff /mnt
 #	umount /mnt
 
-coffboot: $(COFFOBJS) no_initrd.o ld.script
-	$(LD) -o $@ $(COFF_LD_ARGS) $(COFFOBJS) no_initrd.o $(LIBS)
-
-coffboot.initrd: $(COFFOBJS) initrd.o ld.script
-	$(LD) -o $@ $(COFF_LD_ARGS) $(COFFOBJS) initrd.o $(LIBS)
+znetboot: vmlinux.coff
+	cp vmlinux.coff $(TFTPIMAGE)
 
-piggyback: piggyback.c
-	$(HOSTCC) $(HOSTCFLAGS) -DKERNELBASE=$(KERNELBASE) -o piggyback piggyback.c
+znetboot.initrd: vmlinux.coff.initrd
+	cp vmlinux.coff.initrd $(TFTPIMAGE)
 
-mknote: mknote.c
-	$(HOSTCC) $(HOSTCFLAGS) -o mknote mknote.c
+coffboot: $(OBJS) ld.script
+	$(LD) -o coffboot $(LD_ARGS) $(OBJS) $(LIBS)
 
-image.o: piggyback vmlinux.gz
-	./piggyback image < vmlinux.gz | $(AS) -o image.o
+zImage: vmlinux.coff
 
-initrd.o: ramdisk.image.gz piggyback
-	./piggyback initrd < ramdisk.image.gz | $(AS) -o initrd.o
+zImage.initrd: vmlinux.coff.initrd
 
-vmlinux.coff: coffboot hack-coff
+vmlinux.coff: coffboot hack-coff vmlinux.gz
 	$(OBJCOPY) $(OBJCOPY_ARGS) coffboot $@
 	./hack-coff $@
 	ln -sf vmlinux.coff zImage
 
-vmlinux.coff.initrd: coffboot.initrd hack-coff
-	$(OBJCOPY) $(OBJCOPY_ARGS) coffboot.initrd $@
+vmlinux.coff.initrd: coffboot hack-coff vmlinux.gz ramdisk.image.gz
+	$(OBJCOPY) $(OBJCOPY_ARGS) --add-section=initrd=ramdisk.image.gz \
+		coffboot $@
 	./hack-coff $@
 
-vmlinux.elf: $(CHRPOBJS) no_initrd.o mknote
-	$(LD) $(CHRP_LD_ARGS) -o $@ $(CHRPOBJS) no_initrd.o $(LIBS)
-	./mknote > note
-	$(OBJCOPY) $@ $@ --add-section=.note=note -R .comment
-
-vmlinux.elf.initrd: $(CHRPOBJS) initrd.o mknote
-	$(LD) $(CHRP_LD_ARGS) -o $@ $(CHRPOBJS) initrd.o $(LIBS)
-	./mknote > note
-	$(OBJCOPY) $@ $@ --add-section=.note=note -R .comment
-
-micoffboot: dummy.o
-	$(LD) -o $@ $(COFF_LD_ARGS) dummy.o $(LIBS)
-
-miboot.image: micoffboot hack-coff vmlinux.gz
-	$(OBJCOPY) $(OBJCOPY_ARGS) --add-section=image=vmlinux.gz micoffboot $@
-	./hack-coff $@
-
-miboot.image.initrd: micoffboot hack-coff vmlinux.gz ramdisk.image.gz
-	$(OBJCOPY) $(OBJCOPY_ARGS) --add-section=image=vmlinux.gz \
-	--add-section=initrd=ramdisk.image.gz micoffboot $@
-	./hack-coff $@
-
-zImage: vmlinux.coff vmlinux.elf miboot.image
-
-zImage.initrd: vmlinux.coff.initrd vmlinux.elf.initrd miboot.image.initrd
-
 else
 znetboot: vmlinux.gz
 
 znetboot.initrd: vmlinux.gz
 
-miboot.image: vmlinux.gz
-
-miboot.image.initrd: vmlinux.gz
-
 coffboot: vmlinux.gz
 
 zImage: vmlinux.gz
@@ -129,7 +86,5 @@
 
 clean:
 	rm -f hack-coff coffboot zImage vmlinux.coff vmlinux.gz
-	rm -f mknote piggyback vmlinux.elf note
-	rm -f micoffboot miboot.image
 
 fastdep:
diff -urN linux.orig/arch/ppc/coffboot/chrpmain.c linux/arch/ppc/coffboot/chrpmain.c
--- linux.orig/arch/ppc/coffboot/chrpmain.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/chrpmain.c	Thu Jan  1 01:00:00 1970
@@ -1,252 +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 "nonstdio.h"
-#include "zlib.h"
-
-extern void *finddevice(const char *);
-extern int getprop(void *, const char *, void *, int);
-void gunzip(void *, int, unsigned char *, int *);
-void stop_imac_ethernet(void);
-void stop_imac_usb(void);
-
-#define get_16be(x)	(*(unsigned short *)(x))
-#define get_32be(x)	(*(unsigned *)(x))
-
-#define RAM_END		(16 << 20)
-
-#define PROG_START	0x00010000
-#define PROG_SIZE	0x003f0000
-
-#define SCRATCH_SIZE	(128 << 10)
-
-char *avail_ram;
-char *begin_avail, *end_avail;
-char *avail_high;
-unsigned int heap_use;
-unsigned int heap_max;
-
-extern char _end[];
-extern char image_data[];
-extern int image_len;
-extern char initrd_data[];
-extern int initrd_len;
-
-
-boot(int a1, int a2, void *prom)
-{
-    int ns, oh, i;
-    unsigned sa, len;
-    void *dst;
-    unsigned char *im;
-    unsigned initrd_start, initrd_size;
-    extern char _start;
-    
-    printf("chrpboot starting: loaded at 0x%x\n", &_start);
-    if (initrd_len) {
-	initrd_size = initrd_len;
-	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%x (%x bytes)\n",
-	       initrd_start, initrd_data, initrd_size);
-	memcpy((char *)initrd_start, initrd_data, initrd_size);
-    }
-    im = image_data;
-    len = image_len;
-    /* 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%x\n", avail_ram);
-	printf("gunzipping (0x%x <- 0x%x:0x%0x)...", 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);
-#if 0
-    stop_imac_ethernet();
-    stop_imac_usb();
-#endif
-
-    sa = (unsigned long)PROG_START;
-    printf("start address = 0x%x\n", sa);
-
-    (*(void (*)())sa)(a1, a2, prom);
-
-    printf("returned?\n");
-
-    pause();
-}
-
-#if 0
-#define eieio()	asm volatile("eieio");
-
-void stop_imac_ethernet(void)
-{
-    void *macio, *enet;
-    unsigned int macio_addr[5], enet_reg[6];
-    int len;
-    volatile unsigned int *dbdma;
-
-    macio = finddevice("/pci/mac-io");
-    enet = finddevice("/pci/mac-io/ethernet");
-    if (macio == NULL || enet == NULL)
-	return;
-    len = getprop(macio, "assigned-addresses", macio_addr, sizeof(macio_addr));
-    if (len != sizeof(macio_addr))
-	return;
-    len = getprop(enet, "reg", enet_reg, sizeof(enet_reg));
-    if (len != sizeof(enet_reg))
-	return;
-    printf("macio base %x, dma at %x & %x\n",
-	   macio_addr[2], enet_reg[2], enet_reg[4]);
-
-    /* hope this is mapped... */
-    dbdma = (volatile unsigned int *) (macio_addr[2] + enet_reg[2]);
-    *dbdma = 0x80;	/* clear the RUN bit */
-    eieio();
-    dbdma = (volatile unsigned int *) (macio_addr[2] + enet_reg[4]);
-    *dbdma = 0x80;	/* clear the RUN bit */
-    eieio();
-}
-
-void stop_imac_usb(void)
-{
-    void *usb;
-    unsigned int usb_addr[5];
-    int len;
-    volatile unsigned int *usb_ctrl;
-
-    usb = finddevice("/pci/usb");
-    if (usb == NULL)
-	return;
-    len = getprop(usb, "assigned-addresses", usb_addr, sizeof(usb_addr));
-    if (len != sizeof(usb_addr))
-	return;
-    printf("usb base %x\n", usb_addr[2]);
-
-    usb_ctrl = (volatile unsigned int *) (usb_addr[2] + 8);
-    *usb_ctrl = 0x01000000;	/* cpu_to_le32(1) */
-    eieio();
-}
-#endif
-
-struct memchunk {
-    unsigned int size;
-    struct memchunk *next;
-};
-
-static struct memchunk *freechunks;
-
-void *zalloc(void *x, unsigned items, unsigned size)
-{
-    void *p;
-    struct memchunk **mpp, *mp;
-
-    size *= items;
-    size = (size + 7) & -8;
-    heap_use += size;
-    if (heap_use > heap_max)
-	heap_max = heap_use;
-    for (mpp = &freechunks; (mp = *mpp) != 0; mpp = &mp->next) {
-	if (mp->size == size) {
-	    *mpp = mp->next;
-	    return mp;
-	}
-    }
-    p = avail_ram;
-    avail_ram += size;
-    if (avail_ram > avail_high)
-	avail_high = avail_ram;
-    if (avail_ram > end_avail) {
-	printf("oops... out of memory\n");
-	pause();
-    }
-    return p;
-}
-
-void zfree(void *x, void *addr, unsigned nb)
-{
-    struct memchunk *mp = addr;
-
-    nb = (nb + 7) & -8;
-    heap_use -= nb;
-    if (avail_ram == addr + nb) {
-	avail_ram = addr;
-	return;
-    }
-    mp->size = nb;
-    mp->next = freechunks;
-    freechunks = mp;
-}
-
-#define HEAD_CRC	2
-#define EXTRA_FIELD	4
-#define ORIG_NAME	8
-#define COMMENT		0x10
-#define RESERVED	0xe0
-
-#define DEFLATED	8
-
-void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
-{
-    z_stream s;
-    int r, i, flags;
-
-    /* skip header */
-    i = 10;
-    flags = src[3];
-    if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
-	printf("bad gzipped data\n");
-	exit();
-    }
-    if ((flags & EXTRA_FIELD) != 0)
-	i = 12 + src[10] + (src[11] << 8);
-    if ((flags & ORIG_NAME) != 0)
-	while (src[i++] != 0)
-	    ;
-    if ((flags & COMMENT) != 0)
-	while (src[i++] != 0)
-	    ;
-    if ((flags & HEAD_CRC) != 0)
-	i += 2;
-    if (i >= *lenp) {
-	printf("gunzip: ran out of data in header\n");
-	exit();
-    }
-
-    s.zalloc = zalloc;
-    s.zfree = zfree;
-    r = inflateInit2(&s, -MAX_WBITS);
-    if (r != Z_OK) {
-	printf("inflateInit2 returned %d\n", r);
-	exit();
-    }
-    s.next_in = src + i;
-    s.avail_in = *lenp - i;
-    s.next_out = dst;
-    s.avail_out = dstlen;
-    r = inflate(&s, Z_FINISH);
-    if (r != Z_OK && r != Z_STREAM_END) {
-	printf("inflate returned %d msg: %s\n", r, s.msg);
-	exit();
-    }
-    *lenp = s.next_out - (unsigned char *) dst;
-    inflateEnd(&s);
-}
diff -urN linux.orig/arch/ppc/coffboot/coffcrt0.S linux/arch/ppc/coffboot/coffcrt0.S
--- linux.orig/arch/ppc/coffboot/coffcrt0.S	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/coffcrt0.S	Thu Jan  1 01:00:00 1970
@@ -1,24 +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.
- */
-	.text
-	.globl	_start
-_start:
-	.long	__start,0,0
-
-	.globl	__start
-__start:
-	lis	9,_start@h
-	lis	8,_etext@ha
-	addi	8,8,_etext@l
-1:	dcbf	0,9
-	icbi	0,9
-	addi	9,9,0x20
-	cmplwi	0,9,8
-	blt	1b
-	b	start
diff -urN linux.orig/arch/ppc/coffboot/coffmain.c linux/arch/ppc/coffboot/coffmain.c
--- linux.orig/arch/ppc/coffboot/coffmain.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/coffmain.c	Thu Jan  1 01:00:00 1970
@@ -1,157 +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 "nonstdio.h"
-#include "zlib.h"
-
-extern void *finddevice(const char *);
-extern int getprop(void *, const char *, void *, int);
-extern char *claim(unsigned, unsigned, unsigned);
-void gunzip(void *, int, unsigned char *, int *);
-
-#define get_16be(x)	(*(unsigned short *)(x))
-#define get_32be(x)	(*(unsigned *)(x))
-
-#define RAM_START	0xc0000000
-#define PROG_START	RAM_START
-#define RAM_END		(RAM_START + 0x800000)	/* only 8M mapped with BATs */
-
-char *avail_ram;
-char *end_avail;
-
-extern char _start[], _end[];
-extern char image_data[];
-extern int image_len;
-extern char initrd_data[];
-extern int initrd_len;
-
-
-boot(int a1, int a2, void *prom)
-{
-    int ns, oh, i;
-    unsigned sa, len;
-    void *dst;
-    unsigned char *im;
-    unsigned initrd_start, initrd_size;
-    
-    printf("coffboot starting: loaded at 0x%x\n", _start);
-    setup_bats(RAM_START);
-    if (initrd_len) {
-	initrd_size = initrd_len;
-	initrd_start = (RAM_END - initrd_size) & ~0xFFF;
-	a1 = initrd_start;
-	a2 = initrd_size;
-	claim(initrd_start - RAM_START, RAM_END - initrd_start, 0);
-	printf("initial ramdisk moving 0x%x <- 0x%x (%x bytes)\n",
-	       initrd_start, initrd_data, initrd_size);
-	memcpy((char *)initrd_start, initrd_data, initrd_size);
-    }
-    im = image_data;
-    len = image_len;
-    /* claim 3MB starting at 0 */
-    claim(0, 3 << 20, 0);
-    dst = (void *) RAM_START;
-    if (im[0] == 0x1f && im[1] == 0x8b) {
-	/* claim 512kB for scratch space */
-	avail_ram = claim(0, 512 << 10, 0x10) + RAM_START;
-	end_avail = avail_ram + (512 << 10);
-	printf("avail_ram = %x\n", avail_ram);
-	printf("gunzipping (0x%x <- 0x%x:0x%0x)...", dst, im, im+len);
-	gunzip(dst, 3 << 20, im, &len);
-	printf("done %u bytes\n", len);
-    } else {
-	memmove(dst, im, len);
-    }
-
-    flush_cache(dst, len);
-    
-    sa = (unsigned long)PROG_START;
-    printf("start address = 0x%x\n", sa);
-
-#if 0
-    pause();
-#endif
-    (*(void (*)())sa)(a1, a2, prom);
-
-    printf("returned?\n");
-
-    pause();
-}
-
-void *zalloc(void *x, unsigned items, unsigned size)
-{
-    void *p = avail_ram;
-
-    size *= items;
-    size = (size + 7) & -8;
-    avail_ram += size;
-    if (avail_ram > end_avail) {
-	printf("oops... out of memory\n");
-	pause();
-    }
-    return p;
-}
-
-void zfree(void *x, void *addr, unsigned nb)
-{
-}
-
-#define HEAD_CRC	2
-#define EXTRA_FIELD	4
-#define ORIG_NAME	8
-#define COMMENT		0x10
-#define RESERVED	0xe0
-
-#define DEFLATED	8
-
-void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
-{
-    z_stream s;
-    int r, i, flags;
-
-    /* skip header */
-    i = 10;
-    flags = src[3];
-    if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
-	printf("bad gzipped data\n");
-	exit();
-    }
-    if ((flags & EXTRA_FIELD) != 0)
-	i = 12 + src[10] + (src[11] << 8);
-    if ((flags & ORIG_NAME) != 0)
-	while (src[i++] != 0)
-	    ;
-    if ((flags & COMMENT) != 0)
-	while (src[i++] != 0)
-	    ;
-    if ((flags & HEAD_CRC) != 0)
-	i += 2;
-    if (i >= *lenp) {
-	printf("gunzip: ran out of data in header\n");
-	exit();
-    }
-
-    s.zalloc = zalloc;
-    s.zfree = zfree;
-    r = inflateInit2(&s, -MAX_WBITS);
-    if (r != Z_OK) {
-	printf("inflateInit2 returned %d\n", r);
-	exit();
-    }
-    s.next_in = src + i;
-    s.avail_in = *lenp - i;
-    s.next_out = dst;
-    s.avail_out = dstlen;
-    r = inflate(&s, Z_FINISH);
-    if (r != Z_OK && r != Z_STREAM_END) {
-	printf("inflate returned %d msg: %s\n", r, s.msg);
-	exit();
-    }
-    *lenp = s.next_out - (unsigned char *) dst;
-    inflateEnd(&s);
-}
diff -urN linux.orig/arch/ppc/coffboot/crt0.S linux/arch/ppc/coffboot/crt0.S
--- linux.orig/arch/ppc/coffboot/crt0.S	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/crt0.S	Thu Jul 11 15:43:29 2002
@@ -9,6 +9,10 @@
 	.text
 	.globl	_start
 _start:
+	.long	__start,0,0
+
+	.globl	__start
+__start:
 	lis	9,_start@h
 	lis	8,_etext@ha
 	addi	8,8,_etext@l
diff -urN linux.orig/arch/ppc/coffboot/dummy.c linux/arch/ppc/coffboot/dummy.c
--- linux.orig/arch/ppc/coffboot/dummy.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/dummy.c	Thu Jan  1 01:00:00 1970
@@ -1,4 +0,0 @@
-int main(void)
-{
-	return 0;
-}
diff -urN linux.orig/arch/ppc/coffboot/misc.S linux/arch/ppc/coffboot/misc.S
--- linux.orig/arch/ppc/coffboot/misc.S	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/misc.S	Thu Jul 11 15:43:29 2002
@@ -14,26 +14,23 @@
  */
 	.globl	setup_bats
 setup_bats:
-	mfpvr	5
-	rlwinm	5,5,16,16,31		/* r3 = 1 for 601, 4 for 604 */
-	cmpi	0,5,1
-	li	0,0
+	mr	4,3
+	mfpvr	3
+	rlwinm	3,3,16,16,31		/* r3 = 1 for 601, 4 for 604 */
+	cmpi	0,3,1
 	bne	4f
-	mtibatl	3,0			/* invalidate BAT first */
-	ori	3,3,4			/* set up BAT registers for 601 */
-	li	4,0x7f
-	mtibatu	3,3
-	mtibatl	3,4
-	b	5f
-4:	mtdbatu	3,0			/* invalidate BATs first */
-	mtibatu	3,0
-	ori	3,3,0xff		/* set up BAT registers for 604 */
-	li	4,2
-	mtdbatl	3,4
-	mtdbatu	3,3
-	mtibatl	3,4
-	mtibatu	3,3
-5:	sync
+	ori	4,4,4			/* set up BAT registers for 601 */
+	li	5,0x7f
+	mtibatu	3,4
+	mtibatl	3,5
+	isync
+	blr
+4:	ori	4,4,0xfe		/* set up BAT registers for 604 */
+	li	5,2
+	mtdbatl	3,5
+	mtdbatu	3,4
+	mtibatl	3,5
+	mtibatu	3,4
 	isync
 	blr
 
diff -urN linux.orig/arch/ppc/coffboot/mknote.c linux/arch/ppc/coffboot/mknote.c
--- linux.orig/arch/ppc/coffboot/mknote.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/mknote.c	Thu Jan  1 01:00:00 1970
@@ -1,43 +0,0 @@
-/*
- * Copyright (C) Cort Dougan 1999.
- *
- * 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.
- *
- * Generate a note section as per the CHRP specification.
- *
- */
-
-#include <stdio.h>
-
-#define PL(x) printf("%c%c%c%c", ((x)>>24)&0xff, ((x)>>16)&0xff, ((x)>>8)&0xff, (x)&0xff );
-
-int main(void)
-{
-/* header */
-	/* namesz */
-	PL(strlen("PowerPC")+1);
-	/* descrsz */
-	PL(6*4);
-	/* type */
-	PL(0x1275);
-	/* name */
-	printf("PowerPC"); printf("%c", 0);
-	
-/* descriptor */
-	/* real-mode */
-	PL(0xffffffff);
-	/* real-base */
-	PL(0x00c00000);
-	/* real-size */
-	PL(0xffffffff);
-	/* virt-base */
-	PL(0xffffffff);
-	/* virt-size */
-	PL(0xffffffff);
-	/* load-base */
-	PL(0x4000);
-	return 0;
-}
diff -urN linux.orig/arch/ppc/coffboot/no_initrd.c linux/arch/ppc/coffboot/no_initrd.c
--- linux.orig/arch/ppc/coffboot/no_initrd.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/no_initrd.c	Thu Jan  1 01:00:00 1970
@@ -1,2 +0,0 @@
-char initrd_data[1];
-int initrd_len = 0;
diff -urN linux.orig/arch/ppc/coffboot/piggyback.c linux/arch/ppc/coffboot/piggyback.c
--- linux.orig/arch/ppc/coffboot/piggyback.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/piggyback.c	Thu Jan  1 01:00:00 1970
@@ -1,65 +0,0 @@
-#include <stdio.h>
-
-extern long ce_exec_config[];
-
-main(int argc, char *argv[])
-{
-	int i, cnt, pos, len;
-	unsigned int cksum, val;
-	unsigned char *lp;
-	unsigned char buf[8192];
-	if (argc != 2)
-	{
-		fprintf(stderr, "usage: %s name <in-file >out-file\n",
-			argv[0]);
-		exit(1);
-	}
-	fprintf(stdout, "#\n");
-	fprintf(stdout, "# Miscellaneous data structures:\n");
-	fprintf(stdout, "# WARNING - this file is automatically generated!\n");
-	fprintf(stdout, "#\n");
-	fprintf(stdout, "\n");
-	fprintf(stdout, "\t.data\n");
-	fprintf(stdout, "\t.globl %s_data\n", argv[1]);
-	fprintf(stdout, "%s_data:\n", argv[1]);
-	pos = 0;
-	cksum = 0;
-	while ((len = read(0, buf, sizeof(buf))) > 0)
-	{
-		cnt = 0;
-		lp = (unsigned char *)buf;
-		len = (len + 3) & ~3;  /* Round up to longwords */
-		for (i = 0;  i < len;  i += 4)
-		{
-			if (cnt == 0)
-			{
-				fprintf(stdout, "\t.long\t");
-			}
-			fprintf(stdout, "0x%02X%02X%02X%02X", lp[0], lp[1], lp[2], lp[3]);
-			val = *(unsigned long *)lp;
-			cksum ^= val;
-			lp += 4;
-			if (++cnt == 4)
-			{
-				cnt = 0;
-				fprintf(stdout, " # %x \n", pos+i-12);
-				fflush(stdout);
-			} else
-			{
-				fprintf(stdout, ",");
-			}
-		}
-		if (cnt)
-		{
-			fprintf(stdout, "0\n");
-		}
-		pos += len;
-	}
-	fprintf(stdout, "\t.globl %s_len\n", argv[1]);
-	fprintf(stdout, "%s_len:\t.long\t0x%x\n", argv[1], pos);
-	fflush(stdout);
-	fclose(stdout);
-	fprintf(stderr, "cksum = %x\n", cksum);
-	exit(0);
-}
-
diff -urN linux.orig/arch/ppc/coffboot/start.c linux/arch/ppc/coffboot/start.c
--- linux.orig/arch/ppc/coffboot/start.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/coffboot/start.c	Thu Jul 11 15:43:29 2002
@@ -33,7 +33,7 @@
     if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4)
 	exit();
 
-    boot(a1, a2, promptr);
+    coffboot(a1, a2, promptr);
     for (;;)
 	exit();
 }
@@ -62,25 +62,6 @@
     return args.actual;
 }
 
-int writestring(void *f, char *ptr, int nb)
-{
-	int w = 0, i;
-	char *ret = "\r";
-
-	for (i = 0; i < nb; ++i) {
-		if (ptr[i] == '\n') {
-			if (i > w) {
-				write(f, ptr + w, i - w);
-				w = i;
-			}
-			write(f, ret, 1);
-		}
-	}
-	if (w < nb)
-		write(f, ptr + w, nb - w);
-	return nb;
-}
-
 int
 read(void *handle, void *ptr, int nb)
 {
@@ -149,29 +130,6 @@
     return args.phandle;
 }
 
-void *
-claim(unsigned int virt, unsigned int size, unsigned int align)
-{
-    struct prom_args {
-	char *service;
-	int nargs;
-	int nret;
-	unsigned int virt;
-	unsigned int size;
-	unsigned int align;
-	void *ret;
-    } args;
-
-    args.service = "claim";
-    args.nargs = 3;
-    args.nret = 1;
-    args.virt = virt;
-    args.size = size;
-    args.align = align;
-    (*prom)(&args);
-    return args.ret;
-}
-
 int
 getprop(void *phandle, const char *name, void *buf, int buflen)
 {
@@ -203,7 +161,9 @@
 {
     char ch = c;
 
-    return writestring(f, &ch, 1) == 1? c: -1;
+    if (c == '\n')
+	putc('\r', f);
+    return write(f, &ch, 1) == 1? c: -1;
 }
 
 int
@@ -217,7 +177,7 @@
 {
     int n = strlen(str);
 
-    return writestring(f, str, n) == n? 0: -1;
+    return write(f, str, n) == n? 0: -1;
 }
 
 int
@@ -230,7 +190,7 @@
 	case 1:
 	    return ch;
 	case -1:
-	    printk("read(stdin) returned -1\n");
+	    printk("read(stdin) returned -1\r\n");
 	    return -1;
 	}
     }
@@ -304,7 +264,7 @@
 	va_start(args, fmt);
 	n = vsprintf(sprint_buf, fmt, args);
 	va_end(args);
-	writestring(stdout, sprint_buf, n);
+	write(stdout, sprint_buf, n);
 }
 
 int
@@ -316,6 +276,6 @@
 	va_start(args, fmt);
 	n = vsprintf(sprint_buf, fmt, args);
 	va_end(args);
-	writestring(stdout, sprint_buf, n);
+	write(stdout, sprint_buf, n);
 	return n;
 }
diff -urN linux.orig/arch/ppc/common_defconfig linux/arch/ppc/common_defconfig
--- linux.orig/arch/ppc/common_defconfig	Sun Mar 25 18:31:50 2001
+++ linux/arch/ppc/common_defconfig	Fri Jul 12 18:54:54 2002
@@ -16,7 +16,6 @@
 # CONFIG_GEMINI is not set
 # CONFIG_MBX is not set
 # CONFIG_SMP is not set
-CONFIG_ALTIVEC=y
 CONFIG_6xx=y
 
 #
diff -urN linux.orig/arch/ppc/config.in linux/arch/ppc/config.in
--- linux.orig/arch/ppc/config.in	Fri Nov  2 17:39:05 2001
+++ linux/arch/ppc/config.in	Thu Jul 11 15:43:29 2002
@@ -22,10 +22,6 @@
 
 bool 'Symmetric multi-processing support' CONFIG_SMP
 
-if [ "$CONFIG_6xx" = "y" ]; then
-  bool 'Altivec (G4) support' CONFIG_ALTIVEC
-fi
-
 if [ "$CONFIG_ALL_PPC" != "y" ]; then
   define_bool CONFIG_MACH_SPECIFIC y
 fi
diff -urN linux.orig/arch/ppc/kernel/Makefile linux/arch/ppc/kernel/Makefile
--- linux.orig/arch/ppc/kernel/Makefile	Sun Mar 25 18:31:48 2001
+++ linux/arch/ppc/kernel/Makefile	Fri Jul 12 19:09:44 2002
@@ -7,13 +7,8 @@
 #
 # Note 2! The CFLAGS definitions are now in the main makefile...
 
-# Once a gas that groks -mvec is generally available, we'll use it...
 .S.o:
-#ifdef CONFIG_ALTIVEC
-#	$(CC) $(CFLAGS) -D__ASSEMBLY__ -Wa,-mvec -c $< -o $*.o
-#else
 	$(CC) $(CFLAGS) -D__ASSEMBLY__ -c $< -o $*.o
-#endif
 
 O_TARGET := kernel.o
 OX_OBJS := ppc_ksyms.o setup.o
@@ -36,40 +31,20 @@
 
 ifeq ($(CONFIG_MBX),y)
 O_OBJS += mbx_setup.o mbx_pci.o softemu8xx.o i8259.o ppc8xx_pic.o
-endif
+else
 ifeq ($(CONFIG_APUS),y)
 O_OBJS += apus_setup.o prom.o openpic.o
+else
+ifneq ($(CONFIG_MBX),y)
+O_OBJS += prep_time.o pmac_time.o chrp_time.o \
+	  pmac_setup.o pmac_support.o \
+	  prep_pci.o pmac_pci.o chrp_pci.o \
+	  residual.o prom.o openpic.o feature.o \
+	  prep_nvram.o open_pic.o i8259.o pmac_pic.o indirect_pci.o \
+	  gemini_pci.o gemini_prom.o gemini_setup.o
+OX_OBJS += chrp_setup.o prep_setup.o
+endif
 endif
-
-PMAC_OBJS = pmac_time.o pmac_setup.o pmac_support.o pmac_pci.o pmac_pic.o \
-	feature.o openpic.o open_pic.o prom.o
-CHRP_OBJS = $(PMAC_OBJS) chrp_time.o chrp_pci.o i8259.o indirect_pci.o
-CHRPX_OBJS = chrp_setup.o
-PREP_OBJS = prep_time.o prep_pci.o residual.o prep_nvram.o i8259.o \
-	indirect_pci.o openpic.o open_pic.o prom.o
-PREPX_OBJS = prep_setup.o
-
-ifeq ($(CONFIG_ALL_PPC),y)
-O_OBJS += $(sort $(PMAC_OBJS) $(PREP_OBJS) $(CHRP_OBJS))
-OX_OBJS += $(PMACX_OBJS) $(PREPX_OBJS) $(CHRPX_OBJS)
-endif
-ifeq ($(CONFIG_PMAC),y)
-O_OBJS += $(PMAC_OBJS)
-OX_OBJS += $(PMACX_OBJS)
-endif
-ifeq ($(CONFIG_PREP),y)
-O_OBJS += $(PREP_OBJS)
-OX_OBJS += $(PREPX_OBJS)
-endif
-ifeq ($(CONFIG_CHRP),y)
-O_OBJS += $(CHRP_OBJS)
-OX_OBJS += $(CHRPX_OBJS)
-endif
-
-GEMINI_OBJS = $(PREP_OBJS) gemini_pci.o gemini_prom.o gemini_setup.o
-ifeq ($(CONFIG_GEMINI),y)
-O_OBJS += $(GEMINI_OBJS)
-OX_OBJS += $(PREPX_OBJS)
 endif
 
 ifdef CONFIG_SMP
diff -urN linux.orig/arch/ppc/kernel/apus_setup.c linux/arch/ppc/kernel/apus_setup.c
--- linux.orig/arch/ppc/kernel/apus_setup.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/apus_setup.c	Fri Jul 12 17:02:19 2002
@@ -42,7 +42,7 @@
 #include <asm/machdep.h>
 #include <asm/ide.h>
 
-#include <asm/time.h>
+#include "time.h"
 #include "local_irq.h"
 
 unsigned long apus_get_rtc_time(void);
diff -urN linux.orig/arch/ppc/kernel/chrp_pci.c linux/arch/ppc/kernel/chrp_pci.c
--- linux.orig/arch/ppc/kernel/chrp_pci.c	Sun Mar 25 18:31:48 2001
+++ linux/arch/ppc/kernel/chrp_pci.c	Thu Jul 11 15:43:29 2002
@@ -12,6 +12,7 @@
 #include <asm/io.h>
 #include <asm/pgtable.h>
 #include <asm/irq.h>
+#include <asm/irq-compat.h>
 #include <asm/hydra.h>
 #include <asm/prom.h>
 #include <asm/gg2.h>
@@ -19,7 +20,6 @@
 #include <asm/machdep.h>
 
 #include "pci.h"
-#include "open_pic.h"
 
 /* LongTrail */
 #define pci_config_addr(bus, dev, offset) \
@@ -287,7 +287,7 @@
 	for( dev=pci_devices ; dev; dev=dev->next )
 	{
 		if ( dev->irq )
-			dev->irq = dev->irq + open_pic.irq_offset;
+			dev->irq = openpic_to_irq( dev->irq );
 		/* these need to be absolute addrs for OF and Matrox FB -- Cort */
 		if ( dev->vendor == PCI_VENDOR_ID_MATROX )
 		{
diff -urN linux.orig/arch/ppc/kernel/chrp_setup.c linux/arch/ppc/kernel/chrp_setup.c
--- linux.orig/arch/ppc/kernel/chrp_setup.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/chrp_setup.c	Thu Jul 11 16:22:09 2002
@@ -33,7 +33,6 @@
 #include <linux/pci.h>
 #include <linux/openpic.h>
 #include <linux/version.h>
-#include <linux/delay.h>
 
 #include <asm/mmu.h>
 #include <asm/processor.h>
@@ -46,11 +45,12 @@
 #include <asm/dma.h>
 #include <asm/machdep.h>
 #include <asm/irq.h>
+#include <asm/irq-compat.h>
 #include <asm/adb.h>
 #include <asm/hydra.h>
 #include <asm/keyboard.h>
 
-#include <asm/time.h>
+#include "time.h"
 #include "local_irq.h"
 #include "i8259.h"
 #include "open_pic.h"
@@ -69,7 +69,7 @@
 int chrp_set_rtc_time(unsigned long nowtime);
 unsigned long rtas_event_scan_rate = 0, rtas_event_scan_ct = 0;
 void chrp_calibrate_decr(void);
-long chrp_time_init(void);
+void chrp_time_init(void);
 
 void chrp_setup_pci_ptrs(void);
 
@@ -359,6 +359,81 @@
 	}
 }
 
+void
+chrp_do_IRQ(struct pt_regs *regs,
+	    int            cpu,
+            int            isfake)
+{
+        int irq;
+        unsigned long bits = 0;
+        int openpic_eoi_done = 0;
+
+#ifdef __SMP__
+        {
+                unsigned int loops = 1000000;
+                while (test_bit(0, &global_irq_lock)) {
+                        if (smp_processor_id() == global_irq_holder) {
+                                printk("uh oh, interrupt while we hold global irq lock!\n");
+#ifdef CONFIG_XMON
+                                xmon(0);
+#endif
+                                break;
+                        }
+                        if (loops-- == 0) {
+                                printk("do_IRQ waiting for irq lock (holder=%d)\n", global_irq_holder);
+#ifdef CONFIG_XMON
+                                xmon(0);
+#endif
+                        }
+                }
+        }
+#endif /* __SMP__ */
+	
+        irq = openpic_irq(smp_processor_id());
+        if (irq == IRQ_8259_CASCADE)
+        {
+                /*
+                 * This magic address generates a PCI IACK cycle.
+                 *
+                 * This should go in the above mask/ack code soon. -- Cort
+                 */
+		if ( chrp_int_ack_special )
+			irq = *chrp_int_ack_special;
+		else
+			irq = i8259_irq(0);
+                /*
+                 * Acknowledge as soon as possible to allow i8259
+                 * interrupt nesting                         */
+                openpic_eoi(smp_processor_id());
+                openpic_eoi_done = 1;
+        }
+        if (irq == OPENPIC_VEC_SPURIOUS)
+        {
+                /*
+                 * Spurious interrupts should never be
+                 * acknowledged
+                 */
+                ppc_spurious_interrupts++;
+                openpic_eoi_done = 1;
+		goto out;
+        }
+        bits = 1UL << irq;
+
+        if (irq < 0)
+        {
+                printk(KERN_DEBUG "Bogus interrupt %d from PC = %lx\n",
+                       irq, regs->nip);
+                ppc_spurious_interrupts++;
+        }
+	else
+        {
+		ppc_irq_dispatch_handler( regs, irq );
+	}
+out:
+        if (!openpic_eoi_done)
+                openpic_eoi(smp_processor_id());
+}
+
 __initfunc(void
 	   chrp_init_IRQ(void))
 {
@@ -373,7 +448,7 @@
 			(*(unsigned long *)get_property(np,
 							"8259-interrupt-acknowledge", NULL));
 	}
-	open_pic.irq_offset = NUM_8259_INTERRUPTS;
+	open_pic.irq_offset = 16;
 	for ( i = 16 ; i < NR_IRQS ; i++ )
 		irq_desc[i].ctl = &open_pic;
 	openpic_init(1);
@@ -381,7 +456,7 @@
 		irq_desc[i].ctl = &i8259_pic;
 	i8259_init();
 #ifdef CONFIG_XMON
-	request_irq(HYDRA_INT_ADB_NMI+open_pic.irq_offset,
+	request_irq(openpic_to_irq(HYDRA_INT_ADB_NMI),
 		    xmon_irq, 0, "NMI", 0);
 #endif	/* CONFIG_XMON */
 #ifdef __SMP__
@@ -570,7 +645,7 @@
 	ppc_md.get_cpuinfo    = chrp_get_cpuinfo;
 	ppc_md.irq_cannonicalize = chrp_irq_cannonicalize;
 	ppc_md.init_IRQ       = chrp_init_IRQ;
-	ppc_md.do_IRQ         = open_pic_do_IRQ;
+	ppc_md.do_IRQ         = chrp_do_IRQ;
 		
 	ppc_md.init           = chrp_init2;
 
@@ -612,8 +687,3 @@
 	while ( *s )
 		call_rtas( "display-character", 1, 1, NULL, *s++ );
 }
-
-void chrp_indicator(int x)
-{
-	call_rtas("set-indicator", 3, 1, NULL, 6, 0, x);
-}
diff -urN linux.orig/arch/ppc/kernel/chrp_time.c linux/arch/ppc/kernel/chrp_time.c
--- linux.orig/arch/ppc/kernel/chrp_time.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/chrp_time.c	Thu Jul 11 15:43:29 2002
@@ -25,25 +25,24 @@
 #include <asm/processor.h>
 #include <asm/nvram.h>
 #include <asm/prom.h>
-#include <asm/time.h>
+#include "time.h"
 
 static int nvram_as1 = NVRAM_AS1;
 static int nvram_as0 = NVRAM_AS0;
 static int nvram_data = NVRAM_DATA;
 
-__initfunc(long chrp_time_init(void))
+__initfunc(void chrp_time_init(void))
 {
 	struct device_node *rtcs;
 	int base;
 
 	rtcs = find_compatible_devices("rtc", "pnpPNP,b00");
 	if (rtcs == NULL || rtcs->addrs == NULL)
-		return 0;
+		return;
 	base = rtcs->addrs[0].address;
 	nvram_as1 = 0;
 	nvram_as0 = base;
 	nvram_data = base + 1;
-	return 0;
 }
 
 int chrp_cmos_clock_read(int addr)
diff -urN linux.orig/arch/ppc/kernel/gemini_setup.c linux/arch/ppc/kernel/gemini_setup.c
--- linux.orig/arch/ppc/kernel/gemini_setup.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/gemini_setup.c	Thu Jul 11 15:45:25 2002
@@ -21,7 +21,6 @@
 #include <linux/blk.h>
 #include <linux/console.h>
 #include <linux/openpic.h>
-#include <linux/delay.h>
 
 #include <asm/system.h>
 #include <asm/pgtable.h>
@@ -30,9 +29,8 @@
 #include <asm/io.h>
 #include <asm/m48t35.h>
 #include <asm/gemini.h>
-#include <asm/processor.h>
 
-#include <asm/time.h>
+#include "time.h"
 #include "local_irq.h"
 #include "open_pic.h"
 
@@ -168,6 +166,8 @@
 	ioremap( GEMINI_MPIC_ADDR, sizeof( struct OpenPIC ));
 }
 
+
+extern unsigned long loops_per_jiffy;
 extern int root_mountflags;
 extern char cmd_line[];
 
@@ -258,6 +258,14 @@
 	return clock;
 }
 
+
+#define L2CR_PIPE_LATEWR   (0x01800000)   /* late-write SRAM */
+#define L2CR_L2CTL         (0x00100000)   /* RAM control */
+#define L2CR_INST_DISABLE  (0x00400000)   /* disable for insn's */
+#define L2CR_L2I           (0x00200000)   /* global invalidate */
+#define L2CR_L2E           (0x80000000)   /* enable */
+#define L2CR_L2WT          (0x00080000)   /* write-through */
+
 void __init gemini_init_l2(void)
 {
 	unsigned char reg;
@@ -331,7 +339,8 @@
 			cache |= L2CR_L2WT;
 #endif
 		cache |= L2CR_PIPE_LATEWR|L2CR_L2CTL|L2CR_INST_DISABLE;
-		_set_L2CR(cache|L2CR_L2E);
+		_set_L2CR(0);
+		_set_L2CR(cache|L2CR_L2I|L2CR_L2E);
 	}
 }
 
@@ -381,7 +390,7 @@
 #define gemini_rtc_write(val,x)  (writeb((val),(GEMINI_RTC+(x))))
 
 /* ensure that the RTC is up and running */
-long __init gemini_time_init(void)
+void __init gemini_time_init(void)
 {
 	unsigned char reg;
 
@@ -392,7 +401,6 @@
 		gemini_rtc_write((reg & ~(M48T35_RTC_STOPPED)), M48T35_RTC_CONTROL);
 		gemini_rtc_write((reg | M48T35_RTC_SET), M48T35_RTC_CONTROL);
 	}
-	return 0;
 }
 
 #undef DEBUG_RTC
diff -urN linux.orig/arch/ppc/kernel/head.S linux/arch/ppc/kernel/head.S
--- linux.orig/arch/ppc/kernel/head.S	Fri Nov  2 17:39:05 2001
+++ linux/arch/ppc/kernel/head.S	Thu Jul 11 15:43:29 2002
@@ -13,7 +13,6 @@
  *    Copyright (C) 1996 Paul Mackerras.
  *  MPC8xx modifications Copyright (C) 1997 Dan Malek (dmalek@jlc.net).
  *  Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
- *  AltiVec additions by Kumar Gala (kumar.gala@motorola.com).
  *
  *  This file contains the low-level support and setup for the
  *  PowerPC platform, including trap and interrupt dispatch.
@@ -23,10 +22,6 @@
  *  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.
- *
- *  2000-04-10.
- *  Add sys_rt_sigreturn in DoSyscall Handler.
- *  Giovanna Ambrosini (ambrosini@lightning.ch).
  *	
  */
 
@@ -87,28 +82,6 @@
 #define REST_16FPRS(n, base)	REST_8FPRS(n, base); REST_8FPRS(n+8, base)
 #define REST_32FPRS(n, base)	REST_16FPRS(n, base); REST_16FPRS(n+16, base)
 
-/*
- * Once a version of gas that understands the AltiVec instructions
- * is freely available, we can do this the normal way...  - paulus
- */
-#define LVX(r,a,b)	.long	(31<<26)+((r)<<21)+((a)<<16)+((b)<<11)+(103<<1)
-#define STVX(r,a,b)	.long	(31<<26)+((r)<<21)+((a)<<16)+((b)<<11)+(231<<1)
-#define MFVSCR(r)	.long	(4<<26)+((r)<<11)+(770<<1)
-#define MTVSCR(r)	.long	(4<<26)+((r)<<11)+(802<<1)
-
-#define SAVE_VR(n,b,base)	li b,TSS_VR0+(16*(n)); STVX(n,b,base)
-#define SAVE_2VR(n,b,base)	SAVE_VR(n,b,base); SAVE_VR(n+1,b,base) 
-#define SAVE_4VR(n,b,base)	SAVE_2VR(n,b,base); SAVE_2VR(n+2,b,base) 
-#define SAVE_8VR(n,b,base)	SAVE_4VR(n,b,base); SAVE_4VR(n+4,b,base) 
-#define SAVE_16VR(n,b,base)	SAVE_8VR(n,b,base); SAVE_8VR(n+8,b,base)
-#define SAVE_32VR(n,b,base)	SAVE_16VR(n,b,base); SAVE_16VR(n+16,b,base)
-#define REST_VR(n,b,base)	li b,TSS_VR0+(16*(n)); LVX(n,b,base)
-#define REST_2VR(n,b,base)	REST_VR(n,b,base); REST_VR(n+1,b,base) 
-#define REST_4VR(n,b,base)	REST_2VR(n,b,base); REST_2VR(n+2,b,base) 
-#define REST_8VR(n,b,base)	REST_4VR(n,b,base); REST_4VR(n+4,b,base) 
-#define REST_16VR(n,b,base)	REST_8VR(n,b,base); REST_8VR(n+8,b,base) 
-#define REST_32VR(n,b,base)	REST_16VR(n,b,base); REST_16VR(n+16,b,base)
-
 #define SYNC \
 	sync; \
 	isync
@@ -262,15 +235,66 @@
 __secondary_start:
 /* Switch MMU off, clear BATs and flush TLB */
  	bl	mmu_off
-mmu_off_return:
 	bl	clear_bats
 	bl	flush_tlbs
-	bl	setup_init_bats
-#ifndef CONFIG_APUS
-#ifdef CONFIG_BOOTX_TEXT
-	bl	setup_disp_bat
-#endif
+
+/* Use the first pair of BAT registers to map the 1st 16MB
+ * of RAM to KERNELBASE.  From this point on we can't safely
+ * call OF any more.
+ */
+	lis	r11,KERNELBASE@h
+	mfspr	r9,PVR
+	rlwinm	r9,r9,16,16,31		/* r9 = 1 for 601, 4 for 604 */
+	cmpi	0,r9,1
+	bne	4f
+	ori	r11,r11,4		/* set up BAT registers for 601 */
+	li	r8,0x7f			/* valid, block length = 8MB */
+	oris	r9,r11,0x800000@h	/* set up BAT reg for 2nd 8M */
+	oris	r10,r8,0x800000@h	/* set up BAT reg for 2nd 8M */
+	mtspr	IBAT0U,r11		/* N.B. 601 has valid bit in */
+	mtspr	IBAT0L,r8		/* lower BAT register */
+	mtspr	IBAT1U,r9
+	mtspr	IBAT1L,r10
+	b	5f
+4:
+#ifdef CONFIG_APUS
+	ori	r11,r11,BL_8M<<2|0x2	/* set up an 8MB mapping */
+	ori	r11,r11,0xfe		/* set up an 8MB mapping */
+	lis	r8,CYBERBASEp@h
+	lwz	r8,0(r8)
+	addis	r8,r8,KERNELBASE@h
+	addi	r8,r8,2
+#else	
+	ori	r11,r11,BL_256M<<2|0x2	/* set up BAT registers for 604 */
+	li	r8,2			/* R/W access */
+	/*
+	 * If the MMU is off clear the bats.  See clear_bat() -- Cort
+	 */
+#ifndef CONFIG_GEMINI	
+	/* 
+	 * allow secondary cpus to get at all of ram in early bootup
+	 * since their init_task may be up there -- Cort
+	 */
+	oris	r18,r8,0x10000000@h
+	oris	r21,r11,(KERNELBASE+0x10000000)@h
+	mtspr	DBAT1L,r18		/* N.B. 6xx (not 601) have valid */
+	mtspr	DBAT1U,r21		/* bit in upper BAT register */
+	mtspr	IBAT1L,r18
+	mtspr	IBAT1U,r21
+	
+	oris	r18,r8,0x20000000@h
+	oris	r21,r11,(KERNELBASE+0x20000000)@h
+	mtspr	DBAT2L,r18		/* N.B. 6xx (not 601) have valid */
+	mtspr	DBAT2U,r21		/* bit in upper BAT register */
+	mtspr	IBAT2L,r18
+	mtspr	IBAT2U,r21
+#endif /* ndef CONFIG_GEMINI */	
 #endif
+	mtspr	DBAT0L,r8		/* N.B. 6xx (not 601) have valid */
+	mtspr	DBAT0U,r11		/* bit in upper BAT register */
+	mtspr	IBAT0L,r8
+	mtspr	IBAT0U,r11
+5:	isync
 #ifdef CONFIG_APUS
 	/* Unfortunately the APUS specific instructions bloat the
 	 * code so it cannot fit in the 0x100 bytes available. We have
@@ -396,15 +420,6 @@
 #endif /* CONFIG_8xx */
 	b	turn_on_mmu
 
-/* Hack for sleep on Core99 machines
- */
-#ifdef CONFIG_POWERMAC
-	. = 0x80
-SleepVector:
-	.long	0
-	.long	0	
-#endif /* CONFIG_POWERMAC */
-
 /*
  * GCC sometimes accesses words at negative offsets from the stack
  * pointer, although the SysV ABI says it shouldn't.  To cope with
@@ -477,7 +492,7 @@
 #endif /* CONFIG_GEMINI */
 #else
 	STD_EXCEPTION(0x100, Reset, UnknownException)
-#endif
+#endif	
 
 /* Machine check */
 	STD_EXCEPTION(0x200, MachineCheck, MachineCheckException)
@@ -636,26 +651,7 @@
 	STD_EXCEPTION(0xd00, SingleStep, SingleStepException)
 
 	STD_EXCEPTION(0xe00, Trap_0e, UnknownException)
-
-#ifndef CONFIG_ALTIVEC
 	STD_EXCEPTION(0xf00, Trap_0f, UnknownException)
-#else
-/*
- * The Altivec unavailable trap is at 0x0f20.  Foo.
- * We effectively remap it to 0x3000.
- */
-	. = 0xf00
-	b	Trap_0f
-trap_0f_cont:
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	li	r20,MSR_KERNEL
-	bl	transfer_to_handler
-	.long	UnknownException
-	.long	int_return
-
-	. = 0xf20
-	b	AltiVecUnavailable
-#endif /* CONFIG_ALTIVEC */
 
 #ifndef CONFIG_8xx
 /*
@@ -1173,24 +1169,9 @@
 	STD_EXCEPTION(0x2f00, Trap_2f, UnknownException)
 
 	. = 0x3000
-#ifdef CONFIG_ALTIVEC
-AltiVecUnavailable:
-	EXCEPTION_PROLOG
-	bne	load_up_altivec		/* if from user, just load it up */
-	li	r20,MSR_KERNEL
-	bl	transfer_to_handler	/* if from kernel, take a trap */
-	.long	KernelAltiVec
-	.long	int_return
-
-/* here are the bits of trap 0xf00 which got displaced */
-Trap_0f:
-	EXCEPTION_PROLOG
-	b	trap_0f_cont
-#endif /* CONFIG_ALTIVEC */
-
-#else /* CONFIG_8xx */
+#else
 	. = 0x2000
-#endif /* CONFIG_8xx */
+#endif
 
 /*
  * This code finishes saving the registers to the exception frame
@@ -1345,7 +1326,11 @@
 	/* Construct the high word of the PPC-style PTE */
 	mfsrin	r5,r3			/* get segment reg for segment */
 	rlwinm	r5,r5,7,1,24		/* put VSID in 0x7fffff80 bits */
+	
+#ifndef __SMP__				/* do this later for SMP */
 	oris	r5,r5,0x8000		/* set V (valid) bit */
+#endif
+	
 	rlwimi	r5,r3,10,26,31		/* put in API (abbrev page index) */
 	/* Get the address of the primary PTE group in the hash table */
 	.globl	hash_page_patch_A
@@ -1457,7 +1442,6 @@
  */
 found_empty:
 found_slot:
-	clrlwi	r5,r5,1		/* clear valid bit (0x80000000) */
 	stw	r5,0(r3)	/* clear V (valid) bit in PTE */
 	sync
 	tlbsync
@@ -1509,7 +1493,6 @@
 	REST_GPR(20, r21)
 	REST_2GPRS(22, r21)
 	lwz	r21,GPR21(r21)
-	sync
 	rfi
 	
 #ifdef __SMP__
@@ -1649,145 +1632,24 @@
 #endif /* __SMP__ */
 	blr
 
-#ifdef CONFIG_ALTIVEC
-/* Note that the AltiVec support is closely modeled after the FP
- * support.  Changes to one are likely to be applicable to the
- * other!  */
-load_up_altivec:
-/*
- * Disable AltiVec for the task which had AltiVec previously,
- * and save its AltiVec registers in its thread_struct.
- * Enables AltiVec for use in the kernel on return.
- * On SMP we know the AltiVec units are free, since we give it up every
- * switch.  -- Kumar
- */
-	mfmsr	r5
-	oris	r5,r5,MSR_VEC@h
-	SYNC
-	mtmsr	r5			/* enable use of AltiVec now */
-	SYNC
-/*
- * For SMP, we don't do lazy AltiVec switching because it just gets too
- * horrendously complex, especially when a task switches from one CPU
- * to another.  Instead we call giveup_altivec in switch_to.
- */
-#ifndef __SMP__
-#ifndef CONFIG_APUS
-	lis	r6,-KERNELBASE@h
-#else
-	lis	r6,CYBERBASEp@h
-	lwz	r6,0(r6)
-#endif
-	addis	r3,r6,last_task_used_altivec@ha
-	lwz	r4,last_task_used_altivec@l(r3)
-	cmpi	0,r4,0
-	beq	1f
-	add	r4,r4,r6
-	addi	r4,r4,TSS	/* want TSS of last_task_used_altivec */
-	SAVE_32VR(0,r20,r4)
-	MFVSCR(vr0)
-	li	r20,TSS_VSCR
-	STVX(vr0,r20,r4)
-	lwz	r5,PT_REGS(r4)
-	add	r5,r5,r6
-	lwz	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-	lis	r20,MSR_VEC@h
-	andc	r4,r4,r20	/* disable altivec for previous task */
-	stw	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-#endif /* __SMP__ */
-	/* enable use of AltiVec after return */
-	oris	r23,r23,MSR_VEC@h
-	mfspr	r5,SPRG3		/* current task's TSS (phys) */
-	li	r20,TSS_VSCR
-	LVX(vr0,r20,r5)
-	MTVSCR(vr0)
-	REST_32VR(0,r20,r5)
-#ifndef __SMP__
-	subi	r4,r5,TSS
-	sub	r4,r4,r6
-	stw	r4,last_task_used_altivec@l(r3)
-#endif /* __SMP__ */
-	/* restore registers and return */
-	lwz	r3,_CCR(r21)
-	lwz	r4,_LINK(r21)
-	mtcrf	0xff,r3
-	mtlr	r4
-	REST_GPR(1, r21)
-	REST_4GPRS(3, r21)
-	/* we haven't used ctr or xer */
-	mtspr	SRR1,r23
-	mtspr	SRR0,r22
-	REST_GPR(20, r21)
-	REST_2GPRS(22, r21)
-	lwz	r21,GPR21(r21)
-	SYNC
-	rfi
-
-/*
- * AltiVec unavailable trap from kernel - print a message, but let
- * the task use AltiVec in the kernel until it returns to user mode.
- */
-KernelAltiVec:
-	lwz	r3,_MSR(r1)
-	oris	r3,r3,MSR_VEC@h
-	stw	r3,_MSR(r1)	/* enable use of AltiVec after return */
-	lis	r3,87f@h
-	ori	r3,r3,87f@l
-	mr	r4,r2		/* current */
-	lwz	r5,_NIP(r1)
-	bl	printk
-	b	int_return
-87:	.string	"AltiVec used in kernel  (task=%p, pc=%x)  \n"
-	.align	4
-
-/*
- * giveup_altivec(tsk)
- * Disable AltiVec for the task given as the argument,
- * and save the AltiVec registers in its thread_struct.
- * Enables AltiVec for use in the kernel on return.
- */
-
-	.globl	giveup_altivec
-giveup_altivec:
-	mfmsr	r5
-	oris	r5,r5,MSR_VEC@h
-	SYNC
-	mtmsr	r5			/* enable use of AltiVec now */
-	SYNC
-	cmpi	0,r3,0
-	beqlr-				/* if no previous owner, done */
-	addi	r3,r3,TSS		/* want TSS of task */
-	lwz	r5,PT_REGS(r3)
-	cmpi	0,r5,0
-	SAVE_32VR(0, r4, r3)
-	MFVSCR(vr0)
-	li	r4,TSS_VSCR
-	STVX(vr0, r4, r3)
-	beq	1f
-	lwz	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-	lis	r3,MSR_VEC@h
-	andc	r4,r4,r3		/* disable AltiVec for previous task */
-	stw	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-#ifndef __SMP__
-	li	r5,0
-	lis	r4,last_task_used_altivec@ha
-	stw	r5,last_task_used_altivec@l(r4)
-#endif /* __SMP__ */
+#else  /* CONFIG_8xx */
+	.globl	giveup_fpu
+giveup_fpu:
 	blr
-#endif /* CONFIG_ALTIVEC */
+#endif /* CONFIG_8xx */
 
 mmu_off:
- 	addi	r4, r3, mmu_off_return - _start
+ 	addi	r4, r3, __secondary_start - _start
 	mfmsr	r3
 	andi.	r0,r3,MSR_DR|MSR_IR		/* MMU enabled? */
-	beqlr
-	andc	r3,r3,r0
+	beq	1f
+	ori	r3,r3,MSR_DR|MSR_IR
+	xori	r3,r3,MSR_DR|MSR_IR
 	mtspr	SRR0,r4
 	mtspr	SRR1,r3
-	SYNC
+	sync
 	rfi
+1:	blr
 
 /*
  * This code is jumped to from the startup code to copy
@@ -1798,6 +1660,10 @@
 	addi	r9,r9,0x6f58		/* translate source addr */
 	cmpw	r31,r9			/* (we have to on chrp) */
 	beq	7f
+#if 0 // still needed ? breaks on me if I don't disable this
+	rlwinm	r4,r4,0,8,31		/* translate source address */
+	add	r4,r4,r3		/* to region mapped with BATs */
+#endif	
 7:	addis	r9,r26,klimit@ha	/* fetch klimit */
 	lwz	r25,klimit@l(r9)
 	addis	r25,r25,-KERNELBASE@h
@@ -1845,12 +1711,6 @@
 	. = 0x4000
 #endif
 
-#else  /* CONFIG_8xx */
-	.globl	giveup_fpu
-giveup_fpu:
-	blr
-#endif /* CONFIG_8xx */
-
 turn_on_mmu:
 	mfmsr	r0
 	ori	r1,r0,MSR_DR|MSR_IR
@@ -1913,7 +1773,7 @@
 	mfspr	r9,PVR
 	rlwinm	r9,r9,16,16,31
 	cmpi	0,r9,1
-	beq	6f			/* not needed for 601 */
+	beq	4f			/* not needed for 601 */
 	mfspr	r11,HID0
 	andi.	r0,r11,HID0_DCE
 	ori	r11,r11,HID0_ICE|HID0_DCE
@@ -1930,24 +1790,14 @@
 	cmpi	0,r9,4			/* check for 604 */
 	cmpi	1,r9,9			/* or 604e */
 	cmpi	2,r9,10			/* or mach5 */
-	cmpi	3,r9,8			/* check for 750 (G3) */
-	cmpi	4,r9,12			/* or 7400 (G4) */
 	cror	2,2,6
 	cror	2,2,10
 	bne	4f
 	ori	r11,r11,HID0_SIED|HID0_BHTE /* for 604[e], enable */
 	bne	2,5f
 	ori	r11,r11,HID0_BTCD
-	b	5f
-4:
-	cror	14,14,18
-	bne	3,6f
-	ori	r11,r11,HID0_SGE|HID0_BHTE|HID0_BTIC|HID0_ABE /* for g3/g4, enable */
-	rlwinm	r11,r11,0,23,21		/* clear HID0_SPD */
- 	li	r3,0
- 	mtspr	ICTC,r3
 5:	mtspr	HID0,r11		/* superscalar exec & br history tbl */
-6:
+4:
 #endif /* CONFIG_8xx */
 #ifdef __SMP__
 	/* if we're the second cpu stack and r2 are different
@@ -2028,10 +1878,10 @@
 	li	r3,MSR_KERNEL & ~(MSR_IR|MSR_DR)
 	mtspr	SRR0,r4
 	mtspr	SRR1,r3
-	SYNC
 	rfi
 /* Load up the kernel context */
 2:
+	SYNC			/* Force all PTE updates to finish */
 	tlbia			/* Clear all TLB entries */
 	sync			/* wait for tlbia/tlbie to finish */
 #ifdef __SMP__
@@ -2088,7 +1938,6 @@
 #endif /* __SMP__ */
 	mtspr	SRR0,r3
 	mtspr	SRR1,r4
-	SYNC
 	rfi			/* enable MMU and jump to start_kernel */
 
 /*
@@ -2126,11 +1975,9 @@
 1:
 #endif /* SHOW_SYSCALLS */
 	cmpi	0,r0,0x7777	/* Special case for 'sys_sigreturn' */
-        cmpi    1,r0,0x6666     /* Special case for 'sys_rt_sigreturn' */
 	beq-	10f
-        beq-    cr1,16f
-	lwz	r10,TASK_PTRACE(r2)
-	andi.	r10,r10,PT_TRACESYS
+	lwz	r10,TASK_FLAGS(r2)
+	andi.	r10,r10,PF_TRACESYS
 	bne-	50f
 	cmpli	0,r0,NR_syscalls
 	bge-	66f
@@ -2175,12 +2022,6 @@
 /* sys_sigreturn */
 10:	addi	r3,r1,STACK_FRAME_OVERHEAD
 	bl	sys_sigreturn
-        cmpi    0,r3,0          /* Check for restarted system call */
-        bge     int_return
-        b       20b
-/* sys_rt_sigreturn */
-16:     addi    r3,r1,STACK_FRAME_OVERHEAD
-        bl      sys_rt_sigreturn
 	cmpi	0,r3,0		/* Check for restarted system call */
 	bge	int_return
 	b	20b
@@ -2273,9 +2114,6 @@
 	mflr	r20		/* Return to switch caller */
 	mfmsr	r22
 	li	r0,MSR_FP	/* Disable floating-point */
-#ifdef CONFIG_ALTIVEC
-	oris	r0,r0,MSR_VEC@h
-#endif /* CONFIG_ALTIVEC */
 	andc	r22,r22,r0
 	stw	r20,_NIP(r1)
 	stw	r22,_MSR(r1)
@@ -2589,38 +2427,6 @@
 	blr
 
 /*
- * Copy a whole page.  We use the dcbz instruction on the destination
- * to reduce memory traffic (it eliminates the unnecessary reads of
- * the destination into cache).  This requires that the destination
- * is cacheable.
- */
-_GLOBAL(copy_page)
-	li	r0,4096/CACHE_LINE_SIZE
-	mtctr	r0
-	addi	r3,r3,-4
-	addi	r4,r4,-4
-	li	r5,4
-1:	dcbz	r5,r3
-	lwz	r6,4(r4)
-	lwz	r7,8(r4)
-	lwz	r8,12(r4)
-	lwzu	r9,16(r4)
-	stw	r6,4(r3)
-	stw	r7,8(r3)
-	stw	r8,12(r3)
-	stwu	r9,16(r3)
-	lwz	r6,4(r4)
-	lwz	r7,8(r4)
-	lwz	r8,12(r4)
-	lwzu	r9,16(r4)
-	stw	r6,4(r3)
-	stw	r7,8(r3)
-	stw	r8,12(r3)
-	stwu	r9,16(r3)
-	bdnz	1b
-	blr
-
-/*
  * Flush entries from the hash table with VSIDs in the range
  * given.
  */
@@ -2798,6 +2604,7 @@
 	stw	r0,20(r1)
 	lis	r4,rtas_data@ha
 	lwz	r4,rtas_data@l(r4)
+	addis	r4,r4,-KERNELBASE@h
 	lis	r6,1f@ha	/* physical return address for rtas */
 	addi	r6,r6,1f@l
 	addis	r6,r6,-KERNELBASE@h
@@ -2817,7 +2624,6 @@
 	mtspr	SPRG2,r7
 	mtspr	SRR0,r8
 	mtspr	SRR1,r9
-	SYNC
 	rfi
 1:	addis	r9,r1,-KERNELBASE@h
 	lwz	r8,20(r9)	/* get return address */
@@ -2826,7 +2632,6 @@
 	mtspr	SPRG2,r0
 	mtspr	SRR0,r8
 	mtspr	SRR1,r9
-	SYNC
 	rfi			/* return to caller */
 #endif /* CONFIG_8xx */
 
@@ -2851,6 +2656,30 @@
        mtlr    r4
        blr
 #endif /* CONFIG_8xx */
+	
+/*
+ * We put a few things here that have to be page-aligned.
+ * This stuff goes at the beginning of the data segment,
+ * which is page-aligned.
+ */
+	.data
+	.globl	sdata
+sdata:
+	.globl	empty_zero_page
+empty_zero_page:
+	.space	4096
+
+	.globl	swapper_pg_dir
+swapper_pg_dir:
+	.space	4096	
+
+/*
+ * This space gets a copy of optional info passed to us by the bootstrap
+ * Used to pass parameters into the kernel like root=/dev/sda1, etc.
+ */	
+	.globl	cmd_line
+cmd_line:
+	.space	512
 
 /* 
  * An undocumented "feature" of 604e requires that the v bit
@@ -2895,117 +2724,4 @@
 	blt	1b
 	sync
 	blr
-
-/* Use the first pair of BAT registers to map the 1st 16MB
- * of RAM to KERNELBASE.  From this point on we can't safely
- * call OF any more.
- */
-setup_init_bats:
-	lis	r11,KERNELBASE@h
-	mfspr	r9,PVR
-	rlwinm	r9,r9,16,16,31		/* r9 = 1 for 601, 4 for 604 */
-	cmpi	0,r9,1
-	bne	4f
-	ori	r11,r11,4		/* set up BAT registers for 601 */
-	li	r8,0x7f			/* valid, block length = 8MB */
-	oris	r9,r11,0x800000@h	/* set up BAT reg for 2nd 8M */
-	oris	r10,r8,0x800000@h	/* set up BAT reg for 2nd 8M */
-	mtspr	IBAT0U,r11		/* N.B. 601 has valid bit in */
-	mtspr	IBAT0L,r8		/* lower BAT register */
-	mtspr	IBAT1U,r9
-	mtspr	IBAT1L,r10
-	b	5f
-4:
-#ifdef CONFIG_APUS
-	ori	r11,r11,BL_8M<<2|0x2	/* set up an 8MB mapping */
-	ori	r11,r11,0xfe		/* set up an 8MB mapping */
-	lis	r8,CYBERBASEp@h
-	lwz	r8,0(r8)
-	addis	r8,r8,KERNELBASE@h
-	addi	r8,r8,2
-#else	
-	ori	r11,r11,BL_256M<<2|0x2	/* set up BAT registers for 604 */
-	li	r8,2			/* R/W access */
-	/*
-	 * If the MMU is off clear the bats.  See clear_bat() -- Cort
-	 */
-#ifndef CONFIG_GEMINI	
-	/* 
-	 * allow secondary cpus to get at all of ram in early bootup
-	 * since their init_task may be up there -- Cort
-	 */
-	oris	r18,r8,0x10000000@h
-	oris	r21,r11,(KERNELBASE+0x10000000)@h
-	mtspr	DBAT1L,r18		/* N.B. 6xx (not 601) have valid */
-	mtspr	DBAT1U,r21		/* bit in upper BAT register */
-	mtspr	IBAT1L,r18
-	mtspr	IBAT1U,r21
 	
-	oris	r18,r8,0x20000000@h
-	oris	r21,r11,(KERNELBASE+0x20000000)@h
-	mtspr	DBAT2L,r18		/* N.B. 6xx (not 601) have valid */
-	mtspr	DBAT2U,r21		/* bit in upper BAT register */
-	mtspr	IBAT2L,r18
-	mtspr	IBAT2U,r21
-#endif /* ndef CONFIG_GEMINI */	
-#endif
-	mtspr	DBAT0L,r8		/* N.B. 6xx (not 601) have valid */
-	mtspr	DBAT0U,r11		/* bit in upper BAT register */
-	mtspr	IBAT0L,r8
-	mtspr	IBAT0U,r11
-5:	isync
-	blr
-	
-#ifdef CONFIG_BOOTX_TEXT
-setup_disp_bat:
-	/*
-	 * setup the display bat prepared for us in prom.c
-	 */
-	mflr	r8
-	bl	reloc_offset
-	mtlr	r8
-	lis	r8, disp_BATL@h
-	ori	r8, r8, disp_BATL@l
-	add	r8, r3, r8
-	lwz	r8, 0(r8)
-	lis	r11, disp_BATU@h
-	ori	r11, r11, disp_BATU@l
-	add	r11, r3, r11
-	lwz	r11, 0(r11)
-	mtspr	IBAT3L,r8
-	mtspr	IBAT3U,r11
-	mfspr	r9,PVR
-	rlwinm	r9,r9,16,16,31		/* r9 = 1 for 601, 4 for 604 */
-	cmpi	0,r9,1
-	beq	1f
-	mtspr	DBAT3L,r8
-	mtspr	DBAT3U,r11
-1:		
-	blr
-#endif
-	
-/*
- * We put a few things here that have to be page-aligned.
- * This stuff goes at the beginning of the data segment,
- * which is page-aligned.
- */
-	.data
-	.globl	sdata
-sdata:
-	.globl	empty_zero_page
-empty_zero_page:
-	.space	4096
-
-	.globl	swapper_pg_dir
-swapper_pg_dir:
-	.space	4096	
-
-/*
- * This space gets a copy of optional info passed to us by the bootstrap
- * Used to pass parameters into the kernel like root=/dev/sda1, etc.
- */	
-	.globl	cmd_line
-cmd_line:
-	.space	512
-
-
diff -urN linux.orig/arch/ppc/kernel/irq.c linux/arch/ppc/kernel/irq.c
--- linux.orig/arch/ppc/kernel/irq.c	Sun Mar 25 18:31:48 2001
+++ linux/arch/ppc/kernel/irq.c	Thu Jul 11 15:43:29 2002
@@ -61,9 +61,7 @@
 
 #include "local_irq.h"
 
-extern atomic_t ipi_recv;
-extern atomic_t ipi_sent;
-void enable_irq(unsigned int irq_nr);
+extern volatile unsigned long ipi_count;
 void enable_irq(unsigned int irq_nr);
 void disable_irq(unsigned int irq_nr);
 
@@ -139,21 +137,20 @@
 	if (!handler)
 	{
 		/* Free */
-		p = &irq_desc[irq].action;
-		while ((action = *p) != NULL && action->dev_id != dev_id)
-			p = &action->next;
-		if (action == NULL)
-			return -ENOENT;
-
-		/* Found it - now free it */
-		save_flags(flags);
-		cli();
-		*p = action->next;
-		if (irq_desc[irq].action == NULL)
-			disable_irq(irq);
-		restore_flags(flags);
-		irq_kfree(action);
-		return 0;
+		for (p = &irq_desc[irq].action; (action = *p) != NULL; p = &action->next)
+		{
+			if (action->dev_id == dev_id)
+			{
+				/* Found it - now free it */
+				save_flags(flags);
+				cli();
+				*p = action->next;
+				restore_flags(flags);
+				irq_kfree(action);
+				return 0;
+			}
+		}
+		return -ENOENT;
 	}
 	
 	action = (struct irqaction *)
@@ -244,10 +241,8 @@
 	}
 #ifdef __SMP__
 	/* should this be per processor send/receive? */
-  	/* should this be per processor send/receive? */
- 	len += sprintf(buf+len, "IPI: (recv/sent) %10lu/%lu\n",
- 			atomic_read(&ipi_recv), atomic_read(&ipi_sent));
-#endif /* __SMP__ */		
+	len += sprintf(buf+len, "IPI: %10lu\n", ipi_count);
+#endif		
 	len += sprintf(buf+len, "BAD: %10u\n", ppc_spurious_interrupts);
 	return len;
 }
@@ -322,14 +317,10 @@
 atomic_t global_bh_count;
 atomic_t global_bh_lock;
 
-extern unsigned long *_get_SP(void);
-
 static void show(char * str)
 {
-#if 0
 	int i;
 	unsigned long *stack;
-#endif
 	int cpu = smp_processor_id();
 
 	printk("\n%s, CPU %d:\n", str, cpu);
@@ -341,10 +332,6 @@
 	       atomic_read(&global_bh_count),
 	       ppc_local_bh_count[0],
 	       ppc_local_bh_count[1]);
-#if 1
-	printk(" CPU: %d last CPU: %d\n", current->processor,current->last_processor);
-	print_backtrace (_get_SP());
-#else
 	stack = (unsigned long *) &str;
 	for (i = 40; i ; i--) {
 		unsigned long x = *++stack;
@@ -352,7 +339,6 @@
 			printk("<[%08lx]> ", x);
 		}
 	}
-#endif
 }
 
 static inline void wait_on_bh(void)
diff -urN linux.orig/arch/ppc/kernel/local_irq.h linux/arch/ppc/kernel/local_irq.h
--- linux.orig/arch/ppc/kernel/local_irq.h	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/local_irq.h	Thu Jul 11 15:43:29 2002
@@ -26,7 +26,6 @@
 struct irqdesc {
 	struct irqaction *action;
 	struct hw_interrupt_type *ctl;
-	int level;
 };
 
 extern struct irqdesc irq_desc[NR_IRQS];
diff -urN linux.orig/arch/ppc/kernel/mbx_pci.c linux/arch/ppc/kernel/mbx_pci.c
--- linux.orig/arch/ppc/kernel/mbx_pci.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/mbx_pci.c	Thu Jul 11 15:43:29 2002
@@ -17,9 +17,7 @@
 
 #include <asm/io.h>
 #include <asm/mbx.h>
-#include <asm/machdep.h>
 
-#include "pci.h"
 
 /*
  * This blows......The MBX uses the Tundra QSpan PCI bridge.  When
diff -urN linux.orig/arch/ppc/kernel/mbx_setup.c linux/arch/ppc/kernel/mbx_setup.c
--- linux.orig/arch/ppc/kernel/mbx_setup.c	Sun Mar 25 18:31:49 2001
+++ linux/arch/ppc/kernel/mbx_setup.c	Thu Jul 11 15:43:29 2002
@@ -31,7 +31,6 @@
 #include <linux/init.h>
 #include <linux/blk.h>
 #include <linux/ioport.h>
-#include <linux/delay.h>
 
 #include <asm/mmu.h>
 #include <asm/processor.h>
@@ -41,25 +40,14 @@
 #include <asm/ide.h>
 #include <asm/mbx.h>
 #include <asm/machdep.h>
-#include <asm/keyboard.h>
-#include <asm/8xx_immap.h>
-#include <asm/time.h>
 
+#include "time.h"
 #include "local_irq.h"
 
 static int mbx_set_rtc_time(unsigned long time);
 unsigned long mbx_get_rtc_time(void);
 void mbx_calibrate_decr(void);
 
-extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
-extern int pckbd_getkeycode(unsigned int scancode);
-extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
-			   char raw_mode);
-extern char pckbd_unexpected_up(unsigned char keycode);
-extern void pckbd_leds(unsigned char leds);
-extern void pckbd_init_hw(void);
-extern unsigned char pckbd_sysrq_xlate[128];
-
 extern int mackbd_setkeycode(unsigned int scancode, unsigned int keycode);
 extern int mackbd_getkeycode(unsigned int scancode);
 extern int mackbd_translate(unsigned char scancode, unsigned char *keycode,
@@ -68,6 +56,8 @@
 extern void mackbd_leds(unsigned char leds);
 extern void mackbd_init_hw(void);
 
+extern unsigned long loops_per_jiffy;
+
 unsigned long empty_zero_page[1024];
 
 #ifdef CONFIG_BLK_DEV_RAM
@@ -463,7 +453,7 @@
 	ppc_md.kbd_leds          = pckbd_leds;
 	ppc_md.kbd_init_hw       = pckbd_init_hw;
 #ifdef CONFIG_MAGIC_SYSRQ
-	ppc_md.sysrq_xlate	 = pckbd_sysrq_xlate;
+	ppc_md.kbd_sysrq_xlate	 = pckbd_sysrq_xlate;
 	SYSRQ_KEY		 = 0x54;
 #endif
 
diff -urN linux.orig/arch/ppc/kernel/misc.S linux/arch/ppc/kernel/misc.S
--- linux.orig/arch/ppc/kernel/misc.S	Sun Mar 25 18:37:30 2001
+++ linux/arch/ppc/kernel/misc.S	Thu Jul 11 15:43:29 2002
@@ -125,33 +125,12 @@
  * Flush MMU TLB
  */
 _GLOBAL(_tlbia)
-#if defined(CONFIG_SMP)
-	mfmsr	r10
-	sync
-	rlwinm	r0,r10,0,17,15		/* clear bit 16 (MSR_EE) */
-	mtmsr	r0
-	SYNC
-	lis	r9,hash_table_lock@h
-	ori	r9,r9,hash_table_lock@l
-	lwz	r8,PROCESSOR(r2)
-	oris	r8,r8,10
-10:	lwarx	r7,0,r9
-	cmpi	0,r7,0
-	bne-	10b
-	stwcx.	r8,0,r9
-	bne-	10b
-	eieio
-#endif /* CONFIG_SMP */
 	sync
 	tlbia
 	sync
 #ifdef __SMP__
 	tlbsync
 	sync
-	li	r0,0
-	stw	r0,0(r9)		/* clear hash_table_lock */
-	mtmsr	r10
-	SYNC
 #endif
 	blr	
 
@@ -159,32 +138,11 @@
  * Flush MMU TLB for a particular address
  */
 _GLOBAL(_tlbie)
-#if defined(CONFIG_SMP)
-	mfmsr	r10
-	sync
-	rlwinm	r0,r10,0,17,15		/* clear bit 16 (MSR_EE) */
-	mtmsr	r0
-	SYNC
-	lis	r9,hash_table_lock@h
-	ori	r9,r9,hash_table_lock@l
-	lwz	r8,PROCESSOR(r2)
-	oris	r8,r8,11
-10:	lwarx	r7,0,r9
-	cmpi	0,r7,0
-	bne-	10b
-	stwcx.	r8,0,r9
-	bne-	10b
-	eieio
-#endif /* CONFIG_SMP */
 	tlbie	r3
 	sync
-#ifdef CONFIG_SMP
+#ifdef __SMP__
 	tlbsync
 	sync
-	li	r0,0
-	stw	r0,0(r9)		/* clear hash_table_lock */
-	mtmsr	r10
-	SYNC
 #endif
 	blr
 
@@ -317,8 +275,10 @@
 	stwcx.	r5,0,r3		/* Update with new value */
 	bne-	10b		/* Retry if "reservation" (i.e. lock) lost */
 	SMP_MB
-	cntlzw	r3,r5
-	srwi	r3,r3,5
+	cmpi	0,r5,0		/* Return 'true' IFF 0 */
+	li	r3,1
+	beqlr
+	li	r3,0
 	blr
 _GLOBAL(atomic_clear_mask)
 	SMP_WMB			/* wmb() */
@@ -354,10 +314,8 @@
  * The *_ns versions don't do byte-swapping.
  */
 _GLOBAL(_insb)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,1
-	blelr-
 00:	lbz	r5,0(r3)
 	eieio
 	stbu	r5,1(r4)
@@ -365,10 +323,8 @@
 	blr
 
 _GLOBAL(_outsb)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,1
-	blelr-
 00:	lbzu	r5,1(r4)
 	stb	r5,0(r3)
 	eieio
@@ -376,10 +332,8 @@
 	blr	
 
 _GLOBAL(_insw)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,2
-	blelr-
 00:	lhbrx	r5,0,r3
 	eieio
 	sthu	r5,2(r4)
@@ -387,10 +341,8 @@
 	blr
 
 _GLOBAL(_outsw)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,2
-	blelr-
 00:	lhzu	r5,2(r4)
 	eieio
 	sthbrx	r5,0,r3	
@@ -398,10 +350,8 @@
 	blr	
 
 _GLOBAL(_insl)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,4
-	blelr-
 00:	lwbrx	r5,0,r3
 	eieio
 	stwu	r5,4(r4)
@@ -409,10 +359,8 @@
 	blr
 
 _GLOBAL(_outsl)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,4
-	blelr-
 00:	lwzu	r5,4(r4)
 	stwbrx	r5,0,r3
 	eieio
@@ -421,10 +369,8 @@
 
 _GLOBAL(ide_insw)
 _GLOBAL(_insw_ns)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,2
-	blelr-
 00:	lhz	r5,0(r3)
 	eieio
 	sthu	r5,2(r4)
@@ -433,10 +379,8 @@
 
 _GLOBAL(ide_outsw)
 _GLOBAL(_outsw_ns)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,2
-	blelr-
 00:	lhzu	r5,2(r4)
 	sth	r5,0(r3)
 	eieio
@@ -444,10 +388,8 @@
 	blr	
 
 _GLOBAL(_insl_ns)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,4
-	blelr-
 00:	lwz	r5,0(r3)
 	eieio
 	stwu	r5,4(r4)
@@ -455,10 +397,8 @@
 	blr
 
 _GLOBAL(_outsl_ns)
-	cmpwi	0,r5,0
 	mtctr	r5
 	subi	r4,r4,4
-	blelr-
 00:	lwzu	r5,4(r4)
 	stw	r5,0(r3)
 	eieio
@@ -466,59 +406,48 @@
 	blr	
 
 /*
- * Extended precision shifts.
- * 
- * Updated to be valid for shift counts from 0 to 63 inclusive.
- * -- Gabriel
+ * Extended precision shifts
  *
  * R3/R4 has 64 bit value
  * R5    has shift count
  * result in R3/R4
  *
- *  ashrdi3: arithmetic right shift (sign propagation)	    
- *  lshrdi3: logical right shift	
- *  ashldi3: left shift
+ *  ashrdi3:     XXXYYY/ZZZAAA -> SSSXXX/YYYZZZ
+ *  ashldi3:     XXXYYY/ZZZAAA -> YYYZZZ/AAA000
+ *  lshrdi3:     XXXYYY/ZZZAAA -> 000XXX/YYYZZZ
  */
 _GLOBAL(__ashrdi3)
-	subfic	r6,r5,32	
-	srw	r4,r4,r5	# LSW = count > 31 ? 0 : LSW >> count
-	addi	r7,r5,32	# could be xori, or addi with -32
-	slw	r6,r3,r6	# t1 = count > 31 ? 0 : MSW << (32-count)
-	rlwinm	r8,r7,0,32	# t3 = (count < 32) ? 32 : 0
-	sraw	r7,r3,r7	# t2 = MSW >> (count-32)
-	or	r4,r4,r6	# LSW |= t1
-	slw	r7,r7,r8	# t2 = (count < 32) ? 0 : t2
-	sraw	r3,r3,r5	# MSW = MSW >> count
-	or	r4,r4,r7	# LSW |= t2
+	li	r6,32
+	sub	r6,r6,r5
+	slw	r7,r3,r6	/* isolate YYY */
+	srw	r4,r4,r5	/* isolate ZZZ */
+	or	r4,r4,r7	/* YYYZZZ */
+	sraw	r3,r3,r5	/* SSSXXX */
 	blr
 
 _GLOBAL(__ashldi3)
-	subfic	r6,r5,32	
-	slw	r3,r3,r5	# MSW = count > 31 ? 0 : MSW << count
-	addi	r7,r5,32	# could be xori, or addi with -32
-	srw	r6,r4,r6	# t1 = count > 31 ? 0 : LSW >> (32-count)
-	slw	r7,r4,r7	# t2 = count < 32 ? 0 : LSW << (count-32)
-	or	r3,r3,r6	# MSW |= t1
-	slw	r4,r4,r5	# LSW = LSW << count
-	or	r3,r3,r7	# MSW |= t2
+	li	r6,32
+	sub	r6,r6,r5
+	srw	r7,r4,r6	/* isolate ZZZ */
+	slw	r4,r4,r5	/* AAA000 */
+	slw	r3,r3,r5	/* YYY--- */
+	or	r3,r3,r7	/* YYYZZZ */
 	blr
 
 _GLOBAL(__lshrdi3)
-	subfic	r6,r5,32	
-	srw	r4,r4,r5	# LSW = count > 31 ? 0 : LSW >> count
-	addi	r7,r5,32	# could be xori, or addi with -32
-	slw	r6,r3,r6	# t1 = count > 31 ? 0 : MSW << (32-count)
-	srw	r7,r3,r7	# t2 = count < 32 ? 0 : MSW >> (count-32)
-	or	r4,r4,r6	# LSW |= t1
-	srw	r3,r3,r5	# MSW = MSW >> count
-	or	r4,r4,r7	# LSW |= t2 
+	li	r6,32
+	sub	r6,r6,r5
+	slw	r7,r3,r6        /* isolate YYY */
+	srw	r4,r4,r5        /* isolate ZZZ */
+	or	r4,r4,r7        /* YYYZZZ */
+	srw	r3,r3,r5        /* 000XXX */
 	blr
 
 _GLOBAL(abs)
-	srawi	r4,r3,31
-	xor	r3,r3,r4
-	sub	r3,r3,r4
-	blr
+	cmpi	0,r3,0
+	bge	10f
+	neg	r3,r3
+10:	blr
 
 _GLOBAL(_get_SP)
 	mr	r3,r1		/* Close enough */
@@ -563,14 +492,6 @@
 	isync /* Handle erratas in some cases */
 	blr
 
-_GLOBAL(_get_ICTC)
-       mfspr   r3,ICTC
-       blr
-
-_GLOBAL(_set_ICTC)
-       mtspr   ICTC,r3
-       blr
-
 /*
 	L2CR functions