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-rw-r--r--arch/powerpc/boot/Makefile149
-rw-r--r--arch/powerpc/boot/README11
-rw-r--r--arch/powerpc/boot/addRamDisk.c311
-rw-r--r--arch/powerpc/boot/addnote.c205
-rw-r--r--arch/powerpc/boot/crt0.S59
-rw-r--r--arch/powerpc/boot/div64.S58
-rw-r--r--arch/powerpc/boot/elf.h149
-rw-r--r--arch/powerpc/boot/install.sh42
-rw-r--r--arch/powerpc/boot/main.c321
-rw-r--r--arch/powerpc/boot/page.h34
-rw-r--r--arch/powerpc/boot/ppc_asm.h62
-rw-r--r--arch/powerpc/boot/prom.c499
-rw-r--r--arch/powerpc/boot/prom.h18
-rw-r--r--arch/powerpc/boot/stdio.h16
-rw-r--r--arch/powerpc/boot/string.S216
-rw-r--r--arch/powerpc/boot/string.h17
-rw-r--r--arch/powerpc/boot/zImage.lds46
17 files changed, 2213 insertions, 0 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
new file mode 100644
index 00000000000..9770f587af7
--- /dev/null
+++ b/arch/powerpc/boot/Makefile
@@ -0,0 +1,149 @@
+# Makefile for making ELF bootable images for booting on CHRP
+# using Open Firmware.
+#
+# Geert Uytterhoeven September 1997
+#
+# Based on coffboot by Paul Mackerras
+# Simplified for ppc64 by Todd Inglett
+#
+# NOTE: this code is built for 32 bit in ELF32 format even though
+# it packages a 64 bit kernel. We do this to simplify the
+# bootloader and increase compatibility with OpenFirmware.
+#
+# To this end we need to define BOOTCC, etc, as the tools
+# needed to build the 32 bit image. These are normally HOSTCC,
+# but may be a third compiler if, for example, you are cross
+# compiling from an intel box. Once the 64bit ppc gcc is
+# stable it will probably simply be a compiler switch to
+# compile for 32bit mode.
+# To make it easier to setup a cross compiler,
+# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
+# in the toplevel makefile.
+
+
+HOSTCC := gcc
+BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
+ $(shell $(CROSS32CC) -print-file-name=include) -fPIC
+BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
+BOOTLFLAGS := -T $(srctree)/$(src)/zImage.lds
+OBJCOPYFLAGS := contents,alloc,load,readonly,data
+
+zlib := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
+zlibheader := infblock.h infcodes.h inffast.h inftrees.h infutil.h
+zliblinuxheader := zlib.h zconf.h zutil.h
+
+$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
+#$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h)
+
+src-boot := string.S prom.c main.c div64.S crt0.S
+src-boot += $(zlib)
+src-boot := $(addprefix $(obj)/, $(src-boot))
+obj-boot := $(addsuffix .o, $(basename $(src-boot)))
+
+BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj)
+
+quiet_cmd_copy_zlib = COPY $@
+ cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
+
+quiet_cmd_copy_zlibheader = COPY $@
+ cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
+# stddef.h for NULL
+quiet_cmd_copy_zliblinuxheader = COPY $@
+ cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
+
+$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
+ $(call cmd,copy_zlib)
+
+$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
+ $(call cmd,copy_zlibheader)
+
+$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
+ $(call cmd,copy_zliblinuxheader)
+
+clean-files := $(zlib) $(zlibheader) $(zliblinuxheader)
+
+
+quiet_cmd_bootcc = BOOTCC $@
+ cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
+
+quiet_cmd_bootas = BOOTAS $@
+ cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
+
+quiet_cmd_bootld = BOOTLD $@
+ cmd_bootld = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(2)
+
+$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
+ $(call if_changed_dep,bootcc)
+$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
+ $(call if_changed_dep,bootas)
+
+#-----------------------------------------------------------
+# ELF sections within the zImage bootloader/wrapper
+#-----------------------------------------------------------
+required := vmlinux.strip
+initrd := initrd
+
+obj-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.o, $(section)))
+src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
+gz-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
+
+hostprogs-y := addnote addRamDisk
+targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \
+ $(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
+ $(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
+ $(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
+ vmlinux.initrd
+extra-y := initrd.o
+
+quiet_cmd_ramdisk = RAMDISK $@
+ cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
+
+quiet_cmd_stripvm = STRIP $@
+ cmd_stripvm = $(STRIP) -s -R .comment $< -o $@
+
+vmlinux.strip: vmlinux
+ $(call if_changed,stripvm)
+$(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz
+ $(call if_changed,ramdisk)
+
+quiet_cmd_addsection = ADDSEC $@
+ cmd_addsection = $(CROSS32OBJCOPY) $@ \
+ --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
+ --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
+
+quiet_cmd_addnote = ADDNOTE $@
+ cmd_addnote = $(obj)/addnote $@
+
+$(call gz-sec, $(required)): $(obj)/kernel-%.gz: %
+ $(call if_changed,gzip)
+
+$(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
+ cp -f $(obj)/ramdisk.image.gz $@
+
+$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz
+ @touch $@
+
+$(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c
+ $(call if_changed_dep,bootcc)
+ $(call cmd,addsection)
+
+$(obj)/zImage.vmode: obj-boot += $(call obj-sec, $(required))
+$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.lds
+ $(call cmd,bootld,$(obj-boot))
+
+$(obj)/zImage.initrd.vmode: obj-boot += $(call obj-sec, $(required) $(initrd))
+$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(srctree)/$(src)/zImage.lds
+ $(call cmd,bootld,$(obj-boot))
+
+$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote
+ @cp -f $< $@
+ $(call if_changed,addnote)
+
+$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote
+ @cp -f $< $@
+ $(call if_changed,addnote)
+
+install: $(CONFIGURE) $(BOOTIMAGE)
+ sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
+
+clean-files := $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)
diff --git a/arch/powerpc/boot/README b/arch/powerpc/boot/README
new file mode 100644
index 00000000000..3e11058760e
--- /dev/null
+++ b/arch/powerpc/boot/README
@@ -0,0 +1,11 @@
+
+To extract the kernel vmlinux, System.map, .config or initrd from the zImage binary:
+
+objcopy -j .kernel:vmlinux -O binary zImage vmlinux.gz
+objcopy -j .kernel:System.map -O binary zImage System.map.gz
+objcopy -j .kernel:.config -O binary zImage config.gz
+objcopy -j .kernel:initrd -O binary zImage.initrd initrd.gz
+
+
+ Peter
+
diff --git a/arch/powerpc/boot/addRamDisk.c b/arch/powerpc/boot/addRamDisk.c
new file mode 100644
index 00000000000..c02a99952be
--- /dev/null
+++ b/arch/powerpc/boot/addRamDisk.c
@@ -0,0 +1,311 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <elf.h>
+
+#define ElfHeaderSize (64 * 1024)
+#define ElfPages (ElfHeaderSize / 4096)
+#define KERNELBASE (0xc000000000000000)
+#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1)))
+
+struct addr_range {
+ unsigned long long addr;
+ unsigned long memsize;
+ unsigned long offset;
+};
+
+static int check_elf64(void *p, int size, struct addr_range *r)
+{
+ Elf64_Ehdr *elf64 = p;
+ Elf64_Phdr *elf64ph;
+
+ if (elf64->e_ident[EI_MAG0] != ELFMAG0 ||
+ elf64->e_ident[EI_MAG1] != ELFMAG1 ||
+ elf64->e_ident[EI_MAG2] != ELFMAG2 ||
+ elf64->e_ident[EI_MAG3] != ELFMAG3 ||
+ elf64->e_ident[EI_CLASS] != ELFCLASS64 ||
+ elf64->e_ident[EI_DATA] != ELFDATA2MSB ||
+ elf64->e_type != ET_EXEC || elf64->e_machine != EM_PPC64)
+ return 0;
+
+ if ((elf64->e_phoff + sizeof(Elf64_Phdr)) > size)
+ return 0;
+
+ elf64ph = (Elf64_Phdr *) ((unsigned long)elf64 +
+ (unsigned long)elf64->e_phoff);
+
+ r->memsize = (unsigned long)elf64ph->p_memsz;
+ r->offset = (unsigned long)elf64ph->p_offset;
+ r->addr = (unsigned long long)elf64ph->p_vaddr;
+
+#ifdef DEBUG
+ printf("PPC64 ELF file, ph:\n");
+ printf("p_type 0x%08x\n", elf64ph->p_type);
+ printf("p_flags 0x%08x\n", elf64ph->p_flags);
+ printf("p_offset 0x%016llx\n", elf64ph->p_offset);
+ printf("p_vaddr 0x%016llx\n", elf64ph->p_vaddr);
+ printf("p_paddr 0x%016llx\n", elf64ph->p_paddr);
+ printf("p_filesz 0x%016llx\n", elf64ph->p_filesz);
+ printf("p_memsz 0x%016llx\n", elf64ph->p_memsz);
+ printf("p_align 0x%016llx\n", elf64ph->p_align);
+ printf("... skipping 0x%08lx bytes of ELF header\n",
+ (unsigned long)elf64ph->p_offset);
+#endif
+
+ return 64;
+}
+void get4k(FILE *file, char *buf )
+{
+ unsigned j;
+ unsigned num = fread(buf, 1, 4096, file);
+ for ( j=num; j<4096; ++j )
+ buf[j] = 0;
+}
+
+void put4k(FILE *file, char *buf )
+{
+ fwrite(buf, 1, 4096, file);
+}
+
+void death(const char *msg, FILE *fdesc, const char *fname)
+{
+ fprintf(stderr, msg);
+ fclose(fdesc);
+ unlink(fname);
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ char inbuf[4096];
+ struct addr_range vmlinux;
+ FILE *ramDisk;
+ FILE *inputVmlinux;
+ FILE *outputVmlinux;
+
+ char *rd_name, *lx_name, *out_name;
+
+ size_t i;
+ unsigned long ramFileLen;
+ unsigned long ramLen;
+ unsigned long roundR;
+ unsigned long offset_end;
+
+ unsigned long kernelLen;
+ unsigned long actualKernelLen;
+ unsigned long round;
+ unsigned long roundedKernelLen;
+ unsigned long ramStartOffs;
+ unsigned long ramPages;
+ unsigned long roundedKernelPages;
+ unsigned long hvReleaseData;
+ u_int32_t eyeCatcher = 0xc8a5d9c4;
+ unsigned long naca;
+ unsigned long xRamDisk;
+ unsigned long xRamDiskSize;
+ long padPages;
+
+
+ if (argc < 2) {
+ fprintf(stderr, "Name of RAM disk file missing.\n");
+ exit(1);
+ }
+ rd_name = argv[1];
+
+ if (argc < 3) {
+ fprintf(stderr, "Name of vmlinux file missing.\n");
+ exit(1);
+ }
+ lx_name = argv[2];
+
+ if (argc < 4) {
+ fprintf(stderr, "Name of vmlinux output file missing.\n");
+ exit(1);
+ }
+ out_name = argv[3];
+
+
+ ramDisk = fopen(rd_name, "r");
+ if ( ! ramDisk ) {
+ fprintf(stderr, "RAM disk file \"%s\" failed to open.\n", rd_name);
+ exit(1);
+ }
+
+ inputVmlinux = fopen(lx_name, "r");
+ if ( ! inputVmlinux ) {
+ fprintf(stderr, "vmlinux file \"%s\" failed to open.\n", lx_name);
+ exit(1);
+ }
+
+ outputVmlinux = fopen(out_name, "w+");
+ if ( ! outputVmlinux ) {
+ fprintf(stderr, "output vmlinux file \"%s\" failed to open.\n", out_name);
+ exit(1);
+ }
+
+ i = fread(inbuf, 1, sizeof(inbuf), inputVmlinux);
+ if (i != sizeof(inbuf)) {
+ fprintf(stderr, "can not read vmlinux file %s: %u\n", lx_name, i);
+ exit(1);
+ }
+
+ i = check_elf64(inbuf, sizeof(inbuf), &vmlinux);
+ if (i == 0) {
+ fprintf(stderr, "You must have a linux kernel specified as argv[2]\n");
+ exit(1);
+ }
+
+ /* Input Vmlinux file */
+ fseek(inputVmlinux, 0, SEEK_END);
+ kernelLen = ftell(inputVmlinux);
+ fseek(inputVmlinux, 0, SEEK_SET);
+ printf("kernel file size = %lu\n", kernelLen);
+
+ actualKernelLen = kernelLen - ElfHeaderSize;
+
+ printf("actual kernel length (minus ELF header) = %lu\n", actualKernelLen);
+
+ round = actualKernelLen % 4096;
+ roundedKernelLen = actualKernelLen;
+ if ( round )
+ roundedKernelLen += (4096 - round);
+ printf("Vmlinux length rounded up to a 4k multiple = %ld/0x%lx \n", roundedKernelLen, roundedKernelLen);
+ roundedKernelPages = roundedKernelLen / 4096;
+ printf("Vmlinux pages to copy = %ld/0x%lx \n", roundedKernelPages, roundedKernelPages);
+
+ offset_end = _ALIGN_UP(vmlinux.memsize, 4096);
+ /* calc how many pages we need to insert between the vmlinux and the start of the ram disk */
+ padPages = offset_end/4096 - roundedKernelPages;
+
+ /* Check and see if the vmlinux is already larger than _end in System.map */
+ if (padPages < 0) {
+ /* vmlinux is larger than _end - adjust the offset to the start of the embedded ram disk */
+ offset_end = roundedKernelLen;
+ printf("vmlinux is larger than _end indicates it needs to be - offset_end = %lx \n", offset_end);
+ padPages = 0;
+ printf("will insert %lx pages between the vmlinux and the start of the ram disk \n", padPages);
+ }
+ else {
+ /* _end is larger than vmlinux - use the offset to _end that we calculated from the system map */
+ printf("vmlinux is smaller than _end indicates is needed - offset_end = %lx \n", offset_end);
+ printf("will insert %lx pages between the vmlinux and the start of the ram disk \n", padPages);
+ }
+
+
+
+ /* Input Ram Disk file */
+ // Set the offset that the ram disk will be started at.
+ ramStartOffs = offset_end; /* determined from the input vmlinux file and the system map */
+ printf("Ram Disk will start at offset = 0x%lx \n", ramStartOffs);
+
+ fseek(ramDisk, 0, SEEK_END);
+ ramFileLen = ftell(ramDisk);
+ fseek(ramDisk, 0, SEEK_SET);
+ printf("%s file size = %ld/0x%lx \n", rd_name, ramFileLen, ramFileLen);
+
+ ramLen = ramFileLen;
+
+ roundR = 4096 - (ramLen % 4096);
+ if ( roundR ) {
+ printf("Rounding RAM disk file up to a multiple of 4096, adding %ld/0x%lx \n", roundR, roundR);
+ ramLen += roundR;
+ }
+
+ printf("Rounded RAM disk size is %ld/0x%lx \n", ramLen, ramLen);
+ ramPages = ramLen / 4096;
+ printf("RAM disk pages to copy = %ld/0x%lx\n", ramPages, ramPages);
+
+
+
+ // Copy 64K ELF header
+ for (i=0; i<(ElfPages); ++i) {
+ get4k( inputVmlinux, inbuf );
+ put4k( outputVmlinux, inbuf );
+ }
+
+ /* Copy the vmlinux (as full pages). */
+ fseek(inputVmlinux, ElfHeaderSize, SEEK_SET);
+ for ( i=0; i<roundedKernelPages; ++i ) {
+ get4k( inputVmlinux, inbuf );
+ put4k( outputVmlinux, inbuf );
+ }
+
+ /* Insert pad pages (if appropriate) that are needed between */
+ /* | the end of the vmlinux and the ram disk. */
+ for (i=0; i<padPages; ++i) {
+ memset(inbuf, 0, 4096);
+ put4k(outputVmlinux, inbuf);
+ }
+
+ /* Copy the ram disk (as full pages). */
+ for ( i=0; i<ramPages; ++i ) {
+ get4k( ramDisk, inbuf );
+ put4k( outputVmlinux, inbuf );
+ }
+
+ /* Close the input files */
+ fclose(ramDisk);
+ fclose(inputVmlinux);
+ /* And flush the written output file */
+ fflush(outputVmlinux);
+
+
+
+ /* Fixup the new vmlinux to contain the ram disk starting offset (xRamDisk) and the ram disk size (xRamDiskSize) */
+ /* fseek to the hvReleaseData pointer */
+ fseek(outputVmlinux, ElfHeaderSize + 0x24, SEEK_SET);
+ if (fread(&hvReleaseData, 4, 1, outputVmlinux) != 1) {
+ death("Could not read hvReleaseData pointer\n", outputVmlinux, out_name);
+ }
+ hvReleaseData = ntohl(hvReleaseData); /* Convert to native int */
+ printf("hvReleaseData is at %08lx\n", hvReleaseData);
+
+ /* fseek to the hvReleaseData */
+ fseek(outputVmlinux, ElfHeaderSize + hvReleaseData, SEEK_SET);
+ if (fread(inbuf, 0x40, 1, outputVmlinux) != 1) {
+ death("Could not read hvReleaseData\n", outputVmlinux, out_name);
+ }
+ /* Check hvReleaseData sanity */
+ if (memcmp(inbuf, &eyeCatcher, 4) != 0) {
+ death("hvReleaseData is invalid\n", outputVmlinux, out_name);
+ }
+ /* Get the naca pointer */
+ naca = ntohl(*((u_int32_t*) &inbuf[0x0C])) - KERNELBASE;
+ printf("Naca is at offset 0x%lx \n", naca);
+
+ /* fseek to the naca */
+ fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET);
+ if (fread(inbuf, 0x18, 1, outputVmlinux) != 1) {
+ death("Could not read naca\n", outputVmlinux, out_name);
+ }
+ xRamDisk = ntohl(*((u_int32_t *) &inbuf[0x0c]));
+ xRamDiskSize = ntohl(*((u_int32_t *) &inbuf[0x14]));
+ /* Make sure a RAM disk isn't already present */
+ if ((xRamDisk != 0) || (xRamDiskSize != 0)) {
+ death("RAM disk is already attached to this kernel\n", outputVmlinux, out_name);
+ }
+ /* Fill in the values */
+ *((u_int32_t *) &inbuf[0x0c]) = htonl(ramStartOffs);
+ *((u_int32_t *) &inbuf[0x14]) = htonl(ramPages);
+
+ /* Write out the new naca */
+ fflush(outputVmlinux);
+ fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET);
+ if (fwrite(inbuf, 0x18, 1, outputVmlinux) != 1) {
+ death("Could not write naca\n", outputVmlinux, out_name);
+ }
+ printf("Ram Disk of 0x%lx pages is attached to the kernel at offset 0x%08lx\n",
+ ramPages, ramStartOffs);
+
+ /* Done */
+ fclose(outputVmlinux);
+ /* Set permission to executable */
+ chmod(out_name, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
+
+ return 0;
+}
+
diff --git a/arch/powerpc/boot/addnote.c b/arch/powerpc/boot/addnote.c
new file mode 100644
index 00000000000..8041a9845ab
--- /dev/null
+++ b/arch/powerpc/boot/addnote.c
@@ -0,0 +1,205 @@
+/*
+ * Program to hack in a PT_NOTE program header entry in an ELF file.
+ * This is needed for OF on RS/6000s to load an image correctly.
+ * Note that OF needs a program header entry for the note, not an
+ * ELF section.
+ *
+ * Copyright 2000 Paul Mackerras.
+ *
+ * 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.
+ *
+ * Usage: addnote zImage
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+/* CHRP note section */
+char arch[] = "PowerPC";
+
+#define N_DESCR 6
+unsigned int descr[N_DESCR] = {
+ 0xffffffff, /* real-mode = true */
+ 0x00c00000, /* real-base, i.e. where we expect OF to be */
+ 0xffffffff, /* real-size */
+ 0xffffffff, /* virt-base */
+ 0xffffffff, /* virt-size */
+ 0x4000, /* load-base */
+};
+
+/* RPA note section */
+char rpaname[] = "IBM,RPA-Client-Config";
+
+/*
+ * Note: setting ignore_my_client_config *should* mean that OF ignores
+ * all the other fields, but there is a firmware bug which means that
+ * it looks at the splpar field at least. So these values need to be
+ * reasonable.
+ */
+#define N_RPA_DESCR 8
+unsigned int rpanote[N_RPA_DESCR] = {
+ 0, /* lparaffinity */
+ 64, /* min_rmo_size */
+ 0, /* min_rmo_percent */
+ 40, /* max_pft_size */
+ 1, /* splpar */
+ -1, /* min_load */
+ 0, /* new_mem_def */
+ 1, /* ignore_my_client_config */
+};
+
+#define ROUNDUP(len) (((len) + 3) & ~3)
+
+unsigned char buf[512];
+
+#define GET_16BE(off) ((buf[off] << 8) + (buf[(off)+1]))
+#define GET_32BE(off) ((GET_16BE(off) << 16) + GET_16BE((off)+2))
+
+#define PUT_16BE(off, v) (buf[off] = ((v) >> 8) & 0xff, \
+ buf[(off) + 1] = (v) & 0xff)
+#define PUT_32BE(off, v) (PUT_16BE((off), (v) >> 16), \
+ PUT_16BE((off) + 2, (v)))
+
+/* Structure of an ELF file */
+#define E_IDENT 0 /* ELF header */
+#define E_PHOFF 28
+#define E_PHENTSIZE 42
+#define E_PHNUM 44
+#define E_HSIZE 52 /* size of ELF header */
+
+#define EI_MAGIC 0 /* offsets in E_IDENT area */
+#define EI_CLASS 4
+#define EI_DATA 5
+
+#define PH_TYPE 0 /* ELF program header */
+#define PH_OFFSET 4
+#define PH_FILESZ 16
+#define PH_HSIZE 32 /* size of program header */
+
+#define PT_NOTE 4 /* Program header type = note */
+
+#define ELFCLASS32 1
+#define ELFDATA2MSB 2
+
+unsigned char elf_magic[4] = { 0x7f, 'E', 'L', 'F' };
+
+int
+main(int ac, char **av)
+{
+ int fd, n, i;
+ int ph, ps, np;
+ int nnote, nnote2, ns;
+
+ if (ac != 2) {
+ fprintf(stderr, "Usage: %s elf-file\n", av[0]);
+ exit(1);
+ }
+ fd = open(av[1], O_RDWR);
+ if (fd < 0) {
+ perror(av[1]);
+ exit(1);
+ }
+
+ nnote = 12 + ROUNDUP(strlen(arch) + 1) + sizeof(descr);
+ nnote2 = 12 + ROUNDUP(strlen(rpaname) + 1) + sizeof(rpanote);
+
+ n = read(fd, buf, sizeof(buf));
+ if (n < 0) {
+ perror("read");
+ exit(1);
+ }
+
+ if (n < E_HSIZE || memcmp(&buf[E_IDENT+EI_MAGIC], elf_magic, 4) != 0)
+ goto notelf;
+
+ if (buf[E_IDENT+EI_CLASS] != ELFCLASS32
+ || buf[E_IDENT+EI_DATA] != ELFDATA2MSB) {
+ fprintf(stderr, "%s is not a big-endian 32-bit ELF image\n",
+ av[1]);
+ exit(1);
+ }
+
+ ph = GET_32BE(E_PHOFF);
+ ps = GET_16BE(E_PHENTSIZE);
+ np = GET_16BE(E_PHNUM);
+ if (ph < E_HSIZE || ps < PH_HSIZE || np < 1)
+ goto notelf;
+ if (ph + (np + 2) * ps + nnote + nnote2 > n)
+ goto nospace;
+
+ for (i = 0; i < np; ++i) {
+ if (GET_32BE(ph + PH_TYPE) == PT_NOTE) {
+ fprintf(stderr, "%s already has a note entry\n",
+ av[1]);
+ exit(0);
+ }
+ ph += ps;
+ }
+
+ /* XXX check that the area we want to use is all zeroes */
+ for (i = 0; i < 2 * ps + nnote + nnote2; ++i)
+ if (buf[ph + i] != 0)
+ goto nospace;
+
+ /* fill in the program header entry */
+ ns = ph + 2 * ps;
+ PUT_32BE(ph + PH_TYPE, PT_NOTE);
+ PUT_32BE(ph + PH_OFFSET, ns);
+ PUT_32BE(ph + PH_FILESZ, nnote);
+
+ /* fill in the note area we point to */
+ /* XXX we should probably make this a proper section */
+ PUT_32BE(ns, strlen(arch) + 1);
+ PUT_32BE(ns + 4, N_DESCR * 4);
+ PUT_32BE(ns + 8, 0x1275);
+ strcpy((char *) &buf[ns + 12], arch);
+ ns += 12 + strlen(arch) + 1;
+ for (i = 0; i < N_DESCR; ++i, ns += 4)
+ PUT_32BE(ns, descr[i]);
+
+ /* fill in the second program header entry and the RPA note area */
+ ph += ps;
+ PUT_32BE(ph + PH_TYPE, PT_NOTE);
+ PUT_32BE(ph + PH_OFFSET, ns);
+ PUT_32BE(ph + PH_FILESZ, nnote2);
+
+ /* fill in the note area we point to */
+ PUT_32BE(ns, strlen(rpaname) + 1);
+ PUT_32BE(ns + 4, sizeof(rpanote));
+ PUT_32BE(ns + 8, 0x12759999);
+ strcpy((char *) &buf[ns + 12], rpaname);
+ ns += 12 + ROUNDUP(strlen(rpaname) + 1);
+ for (i = 0; i < N_RPA_DESCR; ++i, ns += 4)
+ PUT_32BE(ns, rpanote[i]);
+
+ /* Update the number of program headers */
+ PUT_16BE(E_PHNUM, np + 2);
+
+ /* write back */
+ lseek(fd, (long) 0, SEEK_SET);
+ i = write(fd, buf, n);
+ if (i < 0) {
+ perror("write");
+ exit(1);
+ }
+ if (i < n) {
+ fprintf(stderr, "%s: write truncated\n", av[1]);
+ exit(1);
+ }
+
+ exit(0);
+
+ notelf:
+ fprintf(stderr, "%s does not appear to be an ELF file\n", av[1]);
+ exit(1);
+
+ nospace:
+ fprintf(stderr, "sorry, I can't find space in %s to put the note\n",
+ av[1]);
+ exit(1);
+}
diff --git a/arch/powerpc/boot/crt0.S b/arch/powerpc/boot/crt0.S
new file mode 100644
index 00000000000..9cc44226393
--- /dev/null
+++ b/arch/powerpc/boot/crt0.S
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ *
+ * NOTE: this code runs in 32 bit mode and is packaged as ELF32.
+ */
+
+#include "ppc_asm.h"
+
+ .text
+ .globl _zimage_start
+_zimage_start:
+ bl reloc_offset
+
+reloc_offset:
+ mflr r0
+ lis r9,reloc_offset@ha
+ addi r9,r9,reloc_offset@l
+ subf. r0,r9,r0
+ beq clear_caches
+
+reloc_got2:
+ lis r9,__got2_start@ha
+ addi r9,r9,__got2_start@l
+ lis r8,__got2_end@ha
+ addi r8,r8,__got2_end@l
+ subf. r8,r9,r8
+ beq clear_caches
+ srwi. r8,r8,2
+ mtctr r8
+ add r9,r0,r9
+reloc_got2_loop:
+ lwz r8,0(r9)
+ add r8,r8,r0
+ stw r8,0(r9)
+ addi r9,r9,4
+ bdnz reloc_got2_loop
+
+clear_caches:
+ lis r9,_start@h
+ add r9,r0,r9
+ lis r8,_etext@ha
+ addi r8,r8,_etext@l
+ add r8,r0,r8
+1: dcbf r0,r9
+ icbi r0,r9
+ addi r9,r9,0x20
+ cmplwi 0,r9,8
+ blt 1b
+ sync
+ isync
+
+ mr r6,r1
+ b start
+
diff --git a/arch/powerpc/boot/div64.S b/arch/powerpc/boot/div64.S
new file mode 100644
index 00000000000..722f360a32a
--- /dev/null
+++ b/arch/powerpc/boot/div64.S
@@ -0,0 +1,58 @@
+/*
+ * Divide a 64-bit unsigned number by a 32-bit unsigned number.
+ * This routine assumes that the top 32 bits of the dividend are
+ * non-zero to start with.
+ * On entry, r3 points to the dividend, which get overwritten with
+ * the 64-bit quotient, and r4 contains the divisor.
+ * On exit, r3 contains the remainder.
+ *
+ * Copyright (C) 2002 Paul Mackerras, IBM Corp.
+ *
+ * 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 "ppc_asm.h"
+
+ .globl __div64_32
+__div64_32:
+ lwz r5,0(r3) # get the dividend into r5/r6
+ lwz r6,4(r3)
+ cmplw r5,r4
+ li r7,0
+ li r8,0
+ blt 1f
+ divwu r7,r5,r4 # if dividend.hi >= divisor,
+ mullw r0,r7,r4 # quotient.hi = dividend.hi / divisor
+ subf. r5,r0,r5 # dividend.hi %= divisor
+ beq 3f
+1: mr r11,r5 # here dividend.hi != 0
+ andis. r0,r5,0xc000
+ bne 2f
+ cntlzw r0,r5 # we are shifting the dividend right
+ li r10,-1 # to make it < 2^32, and shifting
+ srw r10,r10,r0 # the divisor right the same amount,
+ add r9,r4,r10 # rounding up (so the estimate cannot
+ andc r11,r6,r10 # ever be too large, only too small)
+ andc r9,r9,r10
+ or r11,r5,r11
+ rotlw r9,r9,r0
+ rotlw r11,r11,r0
+ divwu r11,r11,r9 # then we divide the shifted quantities
+2: mullw r10,r11,r4 # to get an estimate of the quotient,
+ mulhwu r9,r11,r4 # multiply the estimate by the divisor,
+ subfc r6,r10,r6 # take the product from the divisor,
+ add r8,r8,r11 # and add the estimate to the accumulated
+ subfe. r5,r9,r5 # quotient
+ bne 1b
+3: cmplw r6,r4
+ blt 4f
+ divwu r0,r6,r4 # perform the remaining 32-bit division
+ mullw r10,r0,r4 # and get the remainder
+ add r8,r8,r0
+ subf r6,r10,r6
+4: stw r7,0(r3) # return the quotient in *r3
+ stw r8,4(r3)
+ mr r3,r6 # return the remainder in r3
+ blr
diff --git a/arch/powerpc/boot/elf.h b/arch/powerpc/boot/elf.h
new file mode 100644
index 00000000000..d4828fcf1cb
--- /dev/null
+++ b/arch/powerpc/boot/elf.h
@@ -0,0 +1,149 @@
+#ifndef _PPC_BOOT_ELF_H_
+#define _PPC_BOOT_ELF_H_
+
+/* 32-bit ELF base types. */
+typedef unsigned int Elf32_Addr;
+typedef unsigned short Elf32_Half;
+typedef unsigned int Elf32_Off;
+typedef signed int Elf32_Sword;
+typedef unsigned int Elf32_Word;
+
+/* 64-bit ELF base types. */
+typedef unsigned long long Elf64_Addr;
+typedef unsigned short Elf64_Half;
+typedef signed short Elf64_SHalf;
+typedef unsigned long long Elf64_Off;
+typedef signed int Elf64_Sword;
+typedef unsigned int Elf64_Word;
+typedef unsigned long long Elf64_Xword;
+typedef signed long long Elf64_Sxword;
+
+/* These constants are for the segment types stored in the image headers */
+#define PT_NULL 0
+#define PT_LOAD 1
+#define PT_DYNAMIC 2
+#define PT_INTERP 3
+#define PT_NOTE 4
+#define PT_SHLIB 5
+#define PT_PHDR 6
+#define PT_TLS 7 /* Thread local storage segment */
+#define PT_LOOS 0x60000000 /* OS-specific */
+#define PT_HIOS 0x6fffffff /* OS-specific */
+#define PT_LOPROC 0x70000000
+#define PT_HIPROC 0x7fffffff
+#define PT_GNU_EH_FRAME 0x6474e550
+
+#define PT_GNU_STACK (PT_LOOS + 0x474e551)
+
+/* These constants define the different elf file types */
+#define ET_NONE 0
+#define ET_REL 1
+#define ET_EXEC 2
+#define ET_DYN 3
+#define ET_CORE 4
+#define ET_LOPROC 0xff00
+#define ET_HIPROC 0xffff
+
+/* These constants define the various ELF target machines */
+#define EM_NONE 0
+#define EM_PPC 20 /* PowerPC */
+#define EM_PPC64 21 /* PowerPC64 */
+
+#define EI_NIDENT 16
+
+typedef struct elf32_hdr {
+ unsigned char e_ident[EI_NIDENT];
+ Elf32_Half e_type;
+ Elf32_Half e_machine;
+ Elf32_Word e_version;
+ Elf32_Addr e_entry; /* Entry point */
+ Elf32_Off e_phoff;
+ Elf32_Off e_shoff;
+ Elf32_Word e_flags;
+ Elf32_Half e_ehsize;
+ Elf32_Half e_phentsize;
+ Elf32_Half e_phnum;
+ Elf32_Half e_shentsize;
+ Elf32_Half e_shnum;
+ Elf32_Half e_shstrndx;
+} Elf32_Ehdr;
+
+typedef struct elf64_hdr {
+ unsigned char e_ident[16]; /* ELF "magic number" */
+ Elf64_Half e_type;
+ Elf64_Half e_machine;
+ Elf64_Word e_version;
+ Elf64_Addr e_entry; /* Entry point virtual address */
+ Elf64_Off e_phoff; /* Program header table file offset */
+ Elf64_Off e_shoff; /* Section header table file offset */
+ Elf64_Word e_flags;
+ Elf64_Half e_ehsize;
+ Elf64_Half e_phentsize;
+ Elf64_Half e_phnum;
+ Elf64_Half e_shentsize;
+ Elf64_Half e_shnum;
+ Elf64_Half e_shstrndx;
+} Elf64_Ehdr;
+
+/* These constants define the permissions on sections in the program
+ header, p_flags. */
+#define PF_R 0x4
+#define PF_W 0x2
+#define PF_X 0x1
+
+typedef struct elf32_phdr {
+ Elf32_Word p_type;
+ Elf32_Off p_offset;
+ Elf32_Addr p_vaddr;
+ Elf32_Addr p_paddr;
+ Elf32_Word p_filesz;
+ Elf32_Word p_memsz;
+ Elf32_Word p_flags;
+ Elf32_Word p_align;
+} Elf32_Phdr;
+
+typedef struct elf64_phdr {
+ Elf64_Word p_type;
+ Elf64_Word p_flags;
+ Elf64_Off p_offset; /* Segment file offset */
+ Elf64_Addr p_vaddr; /* Segment virtual address */
+ Elf64_Addr p_paddr; /* Segment physical address */
+ Elf64_Xword p_filesz; /* Segment size in file */
+ Elf64_Xword p_memsz; /* Segment size in memory */
+ Elf64_Xword p_align; /* Segment alignment, file & memory */
+} Elf64_Phdr;
+
+#define EI_MAG0 0 /* e_ident[] indexes */
+#define EI_MAG1 1
+#define EI_MAG2 2
+#define EI_MAG3 3
+#define EI_CLASS 4
+#define EI_DATA 5
+#define EI_VERSION 6
+#define EI_OSABI 7
+#define EI_PAD 8
+
+#define ELFMAG0 0x7f /* EI_MAG */
+#define ELFMAG1 'E'
+#define ELFMAG2 'L'
+#define ELFMAG3 'F'
+#define ELFMAG "\177ELF"
+#define SELFMAG 4
+
+#define ELFCLASSNONE 0 /* EI_CLASS */
+#define ELFCLASS32 1
+#define ELFCLASS64 2
+#define ELFCLASSNUM 3
+
+#define ELFDATANONE 0 /* e_ident[EI_DATA] */
+#define ELFDATA2LSB 1
+#define ELFDATA2MSB 2
+
+#define EV_NONE 0 /* e_version, EI_VERSION */
+#define EV_CURRENT 1
+#define EV_NUM 2
+
+#define ELFOSABI_NONE 0
+#define ELFOSABI_LINUX 3
+
+#endif /* _PPC_BOOT_ELF_H_ */
diff --git a/arch/powerpc/boot/install.sh b/arch/powerpc/boot/install.sh
new file mode 100644
index 00000000000..eacce959081
--- /dev/null
+++ b/arch/powerpc/boot/install.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+#
+# arch/ppc64/boot/install.sh
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1995 by Linus Torvalds
+#
+# Blatantly stolen from in arch/i386/boot/install.sh by Dave Hansen
+#
+# "make install" script for ppc64 architecture
+#
+# Arguments:
+# $1 - kernel version
+# $2 - kernel image file
+# $3 - kernel map file
+# $4 - default install path (blank if root directory)
+# $5 - kernel boot file, the zImage
+#
+
+# User may have a custom install script
+
+if [ -x ~/bin/${CROSS_COMPILE}installkernel ]; then exec ~/bin/${CROSS_COMPILE}installkernel "$@"; fi
+if [ -x /sbin/${CROSS_COMPILE}installkernel ]; then exec /sbin/${CROSS_COMPILE}installkernel "$@"; fi
+
+# Default install
+
+# this should work for both the pSeries zImage and the iSeries vmlinux.sm
+image_name=`basename $2`
+
+if [ -f $4/$image_name ]; then
+ mv $4/$image_name $4/$image_name.old
+fi
+
+if [ -f $4/System.map ]; then
+ mv $4/System.map $4/System.old
+fi
+
+cat $2 > $4/$image_name
+cp $3 $4/System.map
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
new file mode 100644
index 00000000000..64ec93116fa
--- /dev/null
+++ b/arch/powerpc/boot/main.c
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) Paul Mackerras 1997.
+ *
+ * Updates for PPC64 by Todd Inglett, Dave Engebretsen & Peter Bergner.
+ *
+ * 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 <stdarg.h>
+#include <stddef.h>
+#include "elf.h"
+#include "page.h"
+#include "string.h"
+#include "stdio.h"
+#include "prom.h"
+#include "zlib.h"
+
+extern void flush_cache(void *, unsigned long);
+
+
+/* Value picked to match that used by yaboot */
+#define PROG_START 0x01400000
+#define RAM_END (512<<20) // Fixme: use OF */
+#define ONE_MB 0x100000
+
+extern char _start[];
+extern char __bss_start[];
+extern char _end[];
+extern char _vmlinux_start[];
+extern char _vmlinux_end[];
+extern char _initrd_start[];
+extern char _initrd_end[];
+
+struct addr_range {
+ unsigned long addr;
+ unsigned long size;
+ unsigned long memsize;
+};
+static struct addr_range vmlinux;
+static struct addr_range vmlinuz;
+static struct addr_range initrd;
+
+static unsigned long elfoffset;
+
+static char scratch[46912]; /* scratch space for gunzip, from zlib_inflate_workspacesize() */
+static char elfheader[256];
+
+
+typedef void (*kernel_entry_t)( unsigned long,
+ unsigned long,
+ void *,
+ void *);
+
+
+#undef DEBUG
+
+static unsigned long claim_base;
+
+#define HEAD_CRC 2
+#define EXTRA_FIELD 4
+#define ORIG_NAME 8
+#define COMMENT 0x10
+#define RESERVED 0xe0
+
+static 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] != Z_DEFLATED || (flags & RESERVED) != 0) {
+ printf("bad gzipped data\n\r");
+ 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\r");
+ exit();
+ }
+
+ if (zlib_inflate_workspacesize() > sizeof(scratch)) {
+ printf("gunzip needs more mem\n");
+ exit();
+ }
+ memset(&s, 0, sizeof(s));
+ s.workspace = scratch;
+ r = zlib_inflateInit2(&s, -MAX_WBITS);
+ if (r != Z_OK) {
+ printf("inflateInit2 returned %d\n\r", r);
+ exit();
+ }
+ s.next_in = src + i;
+ s.avail_in = *lenp - i;
+ s.next_out = dst;
+ s.avail_out = dstlen;
+ r = zlib_inflate(&s, Z_FULL_FLUSH);
+ if (r != Z_OK && r != Z_STREAM_END) {
+ printf("inflate returned %d msg: %s\n\r", r, s.msg);
+ exit();
+ }
+ *lenp = s.next_out - (unsigned char *) dst;
+ zlib_inflateEnd(&s);
+}
+
+static unsigned long try_claim(unsigned long size)
+{
+ unsigned long addr = 0;
+
+ for(; claim_base < RAM_END; claim_base += ONE_MB) {
+#ifdef DEBUG
+ printf(" trying: 0x%08lx\n\r", claim_base);
+#endif
+ addr = (unsigned long)claim(claim_base, size, 0);
+ if ((void *)addr != (void *)-1)
+ break;
+ }
+ if (addr == 0)
+ return 0;
+ claim_base = PAGE_ALIGN(claim_base + size);
+ return addr;
+}
+
+static int is_elf64(void *hdr)
+{
+ Elf64_Ehdr *elf64 = hdr;
+ Elf64_Phdr *elf64ph;
+ unsigned int i;
+
+ if (!(elf64->e_ident[EI_MAG0] == ELFMAG0 &&
+ elf64->e_ident[EI_MAG1] == ELFMAG1 &&
+ elf64->e_ident[EI_MAG2] == ELFMAG2 &&
+ elf64->e_ident[EI_MAG3] == ELFMAG3 &&
+ elf64->e_ident[EI_CLASS] == ELFCLASS64 &&
+ elf64->e_ident[EI_DATA] == ELFDATA2MSB &&
+ elf64->e_type == ET_EXEC &&
+ elf64->e_machine == EM_PPC64))
+ return 0;
+
+ elf64ph = (Elf64_Phdr *)((unsigned long)elf64 +
+ (unsigned long)elf64->e_phoff);
+ for (i = 0; i < (unsigned int)elf64->e_phnum; i++, elf64ph++)
+ if (elf64ph->p_type == PT_LOAD && elf64ph->p_offset != 0)
+ break;
+ if (i >= (unsigned int)elf64->e_phnum)
+ return 0;
+
+ elfoffset = (unsigned long)elf64ph->p_offset;
+ vmlinux.size = (unsigned long)elf64ph->p_filesz + elfoffset;
+ vmlinux.memsize = (unsigned long)elf64ph->p_memsz + elfoffset;
+ return 1;
+}
+
+static int is_elf32(void *hdr)
+{
+ Elf32_Ehdr *elf32 = hdr;
+ Elf32_Phdr *elf32ph;
+ unsigned int i;
+
+ if (!(elf32->e_ident[EI_MAG0] == ELFMAG0 &&
+ elf32->e_ident[EI_MAG1] == ELFMAG1 &&
+ elf32->e_ident[EI_MAG2] == ELFMAG2 &&
+ elf32->e_ident[EI_MAG3] == ELFMAG3 &&
+ elf32->e_ident[EI_CLASS] == ELFCLASS32 &&
+ elf32->e_ident[EI_DATA] == ELFDATA2MSB &&
+ elf32->e_type == ET_EXEC &&
+ elf32->e_machine == EM_PPC))
+ return 0;
+
+ elf32 = (Elf32_Ehdr *)elfheader;
+ elf32ph = (Elf32_Phdr *) ((unsigned long)elf32 + elf32->e_phoff);
+ for (i = 0; i < elf32->e_phnum; i++, elf32ph++)
+ if (elf32ph->p_type == PT_LOAD && elf32ph->p_offset != 0)
+ break;
+ if (i >= elf32->e_phnum)
+ return 0;
+
+ elfoffset = elf32ph->p_offset;
+ vmlinux.size = elf32ph->p_filesz + elf32ph->p_offset;
+ vmlinux.memsize = elf32ph->p_memsz + elf32ph->p_offset;
+ return 1;
+}
+
+void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
+{
+ int len;
+ kernel_entry_t kernel_entry;
+
+ memset(__bss_start, 0, _end - __bss_start);
+
+ prom = (int (*)(void *)) promptr;
+ chosen_handle = finddevice("/chosen");
+ if (chosen_handle == (void *) -1)
+ exit();
+ if (getprop(chosen_handle, "stdout", &stdout, sizeof(stdout)) != 4)
+ exit();
+ stderr = stdout;
+ if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4)
+ exit();
+
+ printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r", _start, sp);
+
+ vmlinuz.addr = (unsigned long)_vmlinux_start;
+ vmlinuz.size = (unsigned long)(_vmlinux_end - _vmlinux_start);
+
+ /* gunzip the ELF header of the kernel */
+ if (*(unsigned short *)vmlinuz.addr == 0x1f8b) {
+ len = vmlinuz.size;
+ gunzip(elfheader, sizeof(elfheader),
+ (unsigned char *)vmlinuz.addr, &len);
+ } else
+ memcpy(elfheader, (const void *)vmlinuz.addr, sizeof(elfheader));
+
+ if (!is_elf64(elfheader) && !is_elf32(elfheader)) {
+ printf("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
+ exit();
+ }
+
+ /*
+ * The first available claim_base must be above the end of the
+ * the loaded kernel wrapper file (_start to _end includes the
+ * initrd image if it is present) and rounded up to a nice
+ * 1 MB boundary for good measure.
+ */
+
+ claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
+
+#if defined(PROG_START)
+ /*
+ * Maintain a "magic" minimum address. This keeps some older
+ * firmware platforms running.
+ */
+
+ if (claim_base < PROG_START)
+ claim_base = PROG_START;
+#endif
+
+ /* We need to claim the memsize plus the file offset since gzip
+ * will expand the header (file offset), then the kernel, then
+ * possible rubbish we don't care about. But the kernel bss must
+ * be claimed (it will be zero'd by the kernel itself)
+ */
+ printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux.memsize);
+ vmlinux.addr = try_claim(vmlinux.memsize);
+ if (vmlinux.addr == 0) {
+ printf("Can't allocate memory for kernel image !\n\r");
+ exit();
+ }
+
+ /*
+ * Now we try to claim memory for the initrd (and copy it there)
+ */
+ initrd.size = (unsigned long)(_initrd_end - _initrd_start);
+ initrd.memsize = initrd.size;
+ if ( initrd.size > 0 ) {
+ printf("Allocating 0x%lx bytes for initrd ...\n\r", initrd.size);
+ initrd.addr = try_claim(initrd.size);
+ if (initrd.addr == 0) {
+ printf("Can't allocate memory for initial ramdisk !\n\r");
+ exit();
+ }
+ a1 = initrd.addr;
+ a2 = initrd.size;
+ printf("initial ramdisk moving 0x%lx <- 0x%lx (0x%lx bytes)\n\r",
+ initrd.addr, (unsigned long)_initrd_start, initrd.size);
+ memmove((void *)initrd.addr, (void *)_initrd_start, initrd.size);
+ printf("initrd head: 0x%lx\n\r", *((unsigned long *)initrd.addr));
+ }
+
+ /* Eventually gunzip the kernel */
+ if (*(unsigned short *)vmlinuz.addr == 0x1f8b) {
+ printf("gunzipping (0x%lx <- 0x%lx:0x%0lx)...",
+ vmlinux.addr, vmlinuz.addr, vmlinuz.addr+vmlinuz.size);
+ len = vmlinuz.size;
+ gunzip((void *)vmlinux.addr, vmlinux.memsize,
+ (unsigned char *)vmlinuz.addr, &len);
+ printf("done 0x%lx bytes\n\r", len);
+ } else {
+ memmove((void *)vmlinux.addr,(void *)vmlinuz.addr,vmlinuz.size);
+ }
+
+ /* Skip over the ELF header */
+#ifdef DEBUG
+ printf("... skipping 0x%lx bytes of ELF header\n\r",
+ elfoffset);
+#endif
+ vmlinux.addr += elfoffset;
+
+ flush_cache((void *)vmlinux.addr, vmlinux.size);
+
+ kernel_entry = (kernel_entry_t)vmlinux.addr;
+#ifdef DEBUG
+ printf( "kernel:\n\r"
+ " entry addr = 0x%lx\n\r"
+ " a1 = 0x%lx,\n\r"
+ " a2 = 0x%lx,\n\r"
+ " prom = 0x%lx,\n\r"
+ " bi_recs = 0x%lx,\n\r",
+ (unsigned long)kernel_entry, a1, a2,
+ (unsigned long)prom, NULL);
+#endif
+
+ kernel_entry(a1, a2, prom, NULL);
+
+ printf("Error: Linux kernel returned to zImage bootloader!\n\r");
+
+ exit();
+}
+
diff --git a/arch/powerpc/boot/page.h b/arch/powerpc/boot/page.h
new file mode 100644
index 00000000000..14eca30fef6
--- /dev/null
+++ b/arch/powerpc/boot/page.h
@@ -0,0 +1,34 @@
+#ifndef _PPC_BOOT_PAGE_H
+#define _PPC_BOOT_PAGE_H
+/*
+ * Copyright (C) 2001 PPC64 Team, IBM Corp
+ *
+ * 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.
+ */
+
+#ifdef __ASSEMBLY__
+#define ASM_CONST(x) x
+#else
+#define __ASM_CONST(x) x##UL
+#define ASM_CONST(x) __ASM_CONST(x)
+#endif
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+
+/* align addr on a size boundary - adjust address up/down if needed */
+#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1)))
+#define _ALIGN_DOWN(addr,size) ((addr)&(~((size)-1)))
+
+/* align addr on a size boundary - adjust address up if needed */
+#define _ALIGN(addr,size) _ALIGN_UP(addr,size)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
+
+#endif /* _PPC_BOOT_PAGE_H */
diff --git a/arch/powerpc/boot/ppc_asm.h b/arch/powerpc/boot/ppc_asm.h
new file mode 100644
index 00000000000..1c2c2817f9b
--- /dev/null
+++ b/arch/powerpc/boot/ppc_asm.h
@@ -0,0 +1,62 @@
+#ifndef _PPC64_PPC_ASM_H
+#define _PPC64_PPC_ASM_H
+/*
+ *
+ * Definitions used by various bits of low-level assembly code on PowerPC.
+ *
+ * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
+ *
+ * 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.
+ */
+
+/* Condition Register Bit Fields */
+
+#define cr0 0
+#define cr1 1
+#define cr2 2
+#define cr3 3
+#define cr4 4
+#define cr5 5
+#define cr6 6
+#define cr7 7
+
+
+/* General Purpose Registers (GPRs) */
+
+#define r0 0
+#define r1 1
+#define r2 2
+#define r3 3
+#define r4 4
+#define r5 5
+#define r6 6
+#define r7 7
+#define r8 8
+#define r9 9
+#define r10 10
+#define r11 11
+#define r12 12
+#define r13 13
+#define r14 14
+#define r15 15
+#define r16 16
+#define r17 17
+#define r18 18
+#define r19 19
+#define r20 20
+#define r21 21
+#define r22 22
+#define r23 23
+#define r24 24
+#define r25 25
+#define r26 26
+#define r27 27
+#define r28 28
+#define r29 29
+#define r30 30
+#define r31 31
+
+#endif /* _PPC64_PPC_ASM_H */
diff --git a/arch/powerpc/boot/prom.c b/arch/powerpc/boot/prom.c
new file mode 100644
index 00000000000..4bea2f4dcb0
--- /dev/null
+++ b/arch/powerpc/boot/prom.c
@@ -0,0 +1,499 @@
+/*
+ * 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 <stdarg.h>
+#include <stddef.h>
+#include "string.h"
+#include "stdio.h"
+#include "prom.h"
+
+int (*prom)(void *);
+
+void *chosen_handle;
+
+void *stdin;
+void *stdout;
+void *stderr;
+
+
+int
+write(void *handle, void *ptr, int nb)
+{
+ struct prom_args {
+ char *service;
+ int nargs;
+ int nret;
+ void *ihandle;
+ void *addr;
+ int len;
+ int actual;
+ } args;
+
+ args.service = "write";
+ args.nargs = 3;
+ args.nret = 1;
+ args.ihandle = handle;
+ args.addr = ptr;
+ args.len = nb;
+ args.actual = -1;
+ (*prom)(&args);
+ return args.actual;
+}
+
+int
+read(void *handle, void *ptr, int nb)
+{
+ struct prom_args {
+ char *service;
+ int nargs;
+ int nret;
+ void *ihandle;
+ void *addr;
+ int len;
+ int actual;
+ } args;
+
+ args.service = "read";
+ args.nargs = 3;
+ args.nret = 1;
+ args.ihandle = handle;
+ args.addr = ptr;
+ args.len = nb;
+ args.actual = -1;
+ (*prom)(&args);
+ return args.actual;
+}
+
+void
+exit()
+{
+ struct prom_args {
+ char *service;
+ } args;
+
+ for (;;) {
+ args.service = "exit";
+ (*prom)(&args);
+ }
+}
+
+void
+pause(void)
+{
+ struct prom_args {
+ char *service;
+ } args;
+
+ args.service = "enter";
+ (*prom)(&args);
+}
+
+void *
+finddevice(const char *name)
+{
+ struct prom_args {
+ char *service;
+ int nargs;
+ int nret;
+ const char *devspec;
+ void *phandle;
+ } args;
+
+ args.service = "finddevice";
+ args.nargs = 1;
+ args.nret = 1;
+ args.devspec = name;
+ args.phandle = (void *) -1;
+ (*prom)(&args);
+ return args.phandle;
+}
+
+void *
+claim(unsigned long virt, unsigned long size, unsigned long 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)
+{
+ struct prom_args {
+ char *service;
+ int nargs;
+ int nret;
+ void *phandle;
+ const char *name;
+ void *buf;
+ int buflen;
+ int size;
+ } args;
+
+ args.service = "getprop";
+ args.nargs = 4;
+ args.nret = 1;
+ args.phandle = phandle;
+ args.name = name;
+ args.buf = buf;
+ args.buflen = buflen;
+ args.size = -1;
+ (*prom)(&args);
+ return args.size;
+}
+
+int
+putc(int c, void *f)
+{
+ char ch = c;
+
+ if (c == '\n')
+ putc('\r', f);
+ return write(f, &ch, 1) == 1? c: -1;
+}
+
+int
+putchar(int c)
+{
+ return putc(c, stdout);
+}
+
+int
+fputs(char *str, void *f)
+{
+ int n = strlen(str);
+
+ return write(f, str, n) == n? 0: -1;
+}
+
+size_t strnlen(const char * s, size_t count)
+{
+ const char *sc;
+
+ for (sc = s; count-- && *sc != '\0'; ++sc)
+ /* nothing */;
+ return sc - s;
+}
+
+extern unsigned int __div64_32(unsigned long long *dividend,
+ unsigned int divisor);
+
+/* The unnecessary pointer compare is there
+ * to check for type safety (n must be 64bit)
+ */
+# define do_div(n,base) ({ \
+ unsigned int __base = (base); \
+ unsigned int __rem; \
+ (void)(((typeof((n)) *)0) == ((unsigned long long *)0)); \
+ if (((n) >> 32) == 0) { \
+ __rem = (unsigned int)(n) % __base; \
+ (n) = (unsigned int)(n) / __base; \
+ } else \
+ __rem = __div64_32(&(n), __base); \
+ __rem; \
+ })
+
+static int skip_atoi(const char **s)
+{
+ int i, c;
+
+ for (i = 0; '0' <= (c = **s) && c <= '9'; ++*s)
+ i = i*10 + c - '0';
+ return i;
+}
+
+#define ZEROPAD 1 /* pad with zero */
+#define SIGN 2 /* unsigned/signed long */
+#define PLUS 4 /* show plus */
+#define SPACE 8 /* space if plus */
+#define LEFT 16 /* left justified */
+#define SPECIAL 32 /* 0x */
+#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
+
+static char * number(char * str, unsigned long long num, int base, int size, int precision, int type)
+{
+ char c,sign,tmp[66];
+ const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
+ int i;
+
+ if (type & LARGE)
+ digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+ if (type & LEFT)
+ type &= ~ZEROPAD;
+ if (base < 2 || base > 36)
+ return 0;
+ c = (type & ZEROPAD) ? '0' : ' ';
+ sign = 0;
+ if (type & SIGN) {
+ if ((signed long long)num < 0) {
+ sign = '-';
+ num = - (signed long long)num;
+ size--;
+ } else if (type & PLUS) {
+ sign = '+';
+ size--;
+ } else if (type & SPACE) {
+ sign = ' ';
+ size--;
+ }
+ }
+ if (type & SPECIAL) {
+ if (base == 16)
+ size -= 2;
+ else if (base == 8)
+ size--;
+ }
+ i = 0;
+ if (num == 0)
+ tmp[i++]='0';
+ else while (num != 0) {
+ tmp[i++] = digits[do_div(num, base)];
+ }
+ if (i > precision)
+ precision = i;
+ size -= precision;
+ if (!(type&(ZEROPAD+LEFT)))
+ while(size-->0)
+ *str++ = ' ';
+ if (sign)
+ *str++ = sign;
+ if (type & SPECIAL) {
+ if (base==8)
+ *str++ = '0';
+ else if (base==16) {
+ *str++ = '0';
+ *str++ = digits[33];
+ }
+ }
+ if (!(type & LEFT))
+ while (size-- > 0)
+ *str++ = c;
+ while (i < precision--)
+ *str++ = '0';
+ while (i-- > 0)
+ *str++ = tmp[i];
+ while (size-- > 0)
+ *str++ = ' ';
+ return str;
+}
+
+int vsprintf(char *buf, const char *fmt, va_list args)
+{
+ int len;
+ unsigned long long num;
+ int i, base;
+ char * str;
+ const char *s;
+
+ int flags; /* flags to number() */
+
+ int field_width; /* width of output field */
+ int precision; /* min. # of digits for integers; max
+ number of chars for from string */
+ int qualifier; /* 'h', 'l', or 'L' for integer fields */
+ /* 'z' support added 23/7/1999 S.H. */
+ /* 'z' changed to 'Z' --davidm 1/25/99 */
+
+
+ for (str=buf ; *fmt ; ++fmt) {
+ if (*fmt != '%') {
+ *str++ = *fmt;
+ continue;
+ }
+
+ /* process flags */
+ flags = 0;
+ repeat:
+ ++fmt; /* this also skips first '%' */
+ switch (*fmt) {
+ case '-': flags |= LEFT; goto repeat;
+ case '+': flags |= PLUS; goto repeat;
+ case ' ': flags |= SPACE; goto repeat;
+ case '#': flags |= SPECIAL; goto repeat;
+ case '0': flags |= ZEROPAD; goto repeat;
+ }
+
+ /* get field width */
+ field_width = -1;
+ if ('0' <= *fmt && *fmt <= '9')
+ field_width = skip_atoi(&fmt);
+ else if (*fmt == '*') {
+ ++fmt;
+ /* it's the next argument */
+ field_width = va_arg(args, int);
+ if (field_width < 0) {
+ field_width = -field_width;
+ flags |= LEFT;
+ }
+ }
+
+ /* get the precision */
+ precision = -1;
+ if (*fmt == '.') {
+ ++fmt;
+ if ('0' <= *fmt && *fmt <= '9')
+ precision = skip_atoi(&fmt);
+ else if (*fmt == '*') {
+ ++fmt;
+ /* it's the next argument */
+ precision = va_arg(args, int);
+ }
+ if (precision < 0)
+ precision = 0;
+ }
+
+ /* get the conversion qualifier */
+ qualifier = -1;
+ if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt =='Z') {
+ qualifier = *fmt;
+ ++fmt;
+ }
+
+ /* default base */
+ base = 10;
+
+ switch (*fmt) {
+ case 'c':
+ if (!(flags & LEFT))
+ while (--field_width > 0)
+ *str++ = ' ';
+ *str++ = (unsigned char) va_arg(args, int);
+ while (--field_width > 0)
+ *str++ = ' ';
+ continue;
+
+ case 's':
+ s = va_arg(args, char *);
+ if (!s)
+ s = "<NULL>";
+
+ len = strnlen(s, precision);
+
+ if (!(flags & LEFT))
+ while (len < field_width--)
+ *str++ = ' ';
+ for (i = 0; i < len; ++i)
+ *str++ = *s++;
+ while (len < field_width--)
+ *str++ = ' ';
+ continue;
+
+ case 'p':
+ if (field_width == -1) {
+ field_width = 2*sizeof(void *);
+ flags |= ZEROPAD;
+ }
+ str = number(str,
+ (unsigned long) va_arg(args, void *), 16,
+ field_width, precision, flags);
+ continue;
+
+
+ case 'n':
+ if (qualifier == 'l') {
+ long * ip = va_arg(args, long *);
+ *ip = (str - buf);
+ } else if (qualifier == 'Z') {
+ size_t * ip = va_arg(args, size_t *);
+ *ip = (str - buf);
+ } else {
+ int * ip = va_arg(args, int *);
+ *ip = (str - buf);
+ }
+ continue;
+
+ case '%':
+ *str++ = '%';
+ continue;
+
+ /* integer number formats - set up the flags and "break" */
+ case 'o':
+ base = 8;
+ break;
+
+ case 'X':
+ flags |= LARGE;
+ case 'x':
+ base = 16;
+ break;
+
+ case 'd':
+ case 'i':
+ flags |= SIGN;
+ case 'u':
+ break;
+
+ default:
+ *str++ = '%';
+ if (*fmt)
+ *str++ = *fmt;
+ else
+ --fmt;
+ continue;
+ }
+ if (qualifier == 'l') {
+ num = va_arg(args, unsigned long);
+ if (flags & SIGN)
+ num = (signed long) num;
+ } else if (qualifier == 'Z') {
+ num = va_arg(args, size_t);
+ } else if (qualifier == 'h') {
+ num = (unsigned short) va_arg(args, int);
+ if (flags & SIGN)
+ num = (signed short) num;
+ } else {
+ num = va_arg(args, unsigned int);
+ if (flags & SIGN)
+ num = (signed int) num;
+ }
+ str = number(str, num, base, field_width, precision, flags);
+ }
+ *str = '\0';
+ return str-buf;
+}
+
+int sprintf(char * buf, const char *fmt, ...)
+{
+ va_list args;
+ int i;
+
+ va_start(args, fmt);
+ i=vsprintf(buf,fmt,args);
+ va_end(args);
+ return i;
+}
+
+static char sprint_buf[1024];
+
+int
+printf(const char *fmt, ...)
+{
+ va_list args;
+ int n;
+
+ va_start(args, fmt);
+ n = vsprintf(sprint_buf, fmt, args);
+ va_end(args);
+ write(stdout, sprint_buf, n);
+ return n;
+}
diff --git a/arch/powerpc/boot/prom.h b/arch/powerpc/boot/prom.h
new file mode 100644
index 00000000000..96ab5aec740
--- /dev/null
+++ b/arch/powerpc/boot/prom.h
@@ -0,0 +1,18 @@
+#ifndef _PPC_BOOT_PROM_H_
+#define _PPC_BOOT_PROM_H_
+
+extern int (*prom) (void *);
+extern void *chosen_handle;
+
+extern void *stdin;
+extern void *stdout;
+extern void *stderr;
+
+extern int write(void *handle, void *ptr, int nb);
+extern int read(void *handle, void *ptr, int nb);
+extern void exit(void);
+extern void pause(void);
+extern void *finddevice(const char *);
+extern void *claim(unsigned long virt, unsigned long size, unsigned long align);
+extern int getprop(void *phandle, const char *name, void *buf, int buflen);
+#endif /* _PPC_BOOT_PROM_H_ */
diff --git a/arch/powerpc/boot/stdio.h b/arch/powerpc/boot/stdio.h
new file mode 100644
index 00000000000..24bd3a8dee9
--- /dev/null
+++ b/arch/powerpc/boot/stdio.h
@@ -0,0 +1,16 @@
+#ifndef _PPC_BOOT_STDIO_H_
+#define _PPC_BOOT_STDIO_H_
+
+extern int printf(const char *fmt, ...);
+
+extern int sprintf(char *buf, const char *fmt, ...);
+
+extern int vsprintf(char *buf, const char *fmt, va_list args);
+
+extern int putc(int c, void *f);
+extern int putchar(int c);
+extern int getchar(void);
+
+extern int fputs(char *str, void *f);
+
+#endif /* _PPC_BOOT_STDIO_H_ */
diff --git a/arch/powerpc/boot/string.S b/arch/powerpc/boot/string.S
new file mode 100644
index 00000000000..b1eeaed7db1
--- /dev/null
+++ b/arch/powerpc/boot/string.S
@@ -0,0 +1,216 @@
+/*
+ * 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.
+ *
+ * NOTE: this code runs in 32 bit mode and is packaged as ELF32.
+ */
+
+#include "ppc_asm.h"
+
+ .text
+ .globl strcpy
+strcpy:
+ addi r5,r3,-1
+ addi r4,r4,-1
+1: lbzu r0,1(r4)
+ cmpwi 0,r0,0
+ stbu r0,1(r5)
+ bne 1b
+ blr
+
+ .globl strncpy
+strncpy:
+ cmpwi 0,r5,0
+ beqlr
+ mtctr r5
+ addi r6,r3,-1
+ addi r4,r4,-1
+1: lbzu r0,1(r4)
+ cmpwi 0,r0,0
+ stbu r0,1(r6)
+ bdnzf 2,1b /* dec ctr, branch if ctr != 0 && !cr0.eq */
+ blr
+
+ .globl strcat
+strcat:
+ addi r5,r3,-1
+ addi r4,r4,-1
+1: lbzu r0,1(r5)
+ cmpwi 0,r0,0
+ bne 1b
+ addi r5,r5,-1
+1: lbzu r0,1(r4)
+ cmpwi 0,r0,0
+ stbu r0,1(r5)
+ bne 1b
+ blr
+
+ .globl strcmp
+strcmp:
+ addi r5,r3,-1
+ addi r4,r4,-1
+1: lbzu r3,1(r5)
+ cmpwi 1,r3,0
+ lbzu r0,1(r4)
+ subf. r3,r0,r3
+ beqlr 1
+ beq 1b
+ blr
+
+ .globl strlen
+strlen:
+ addi r4,r3,-1
+1: lbzu r0,1(r4)
+ cmpwi 0,r0,0
+ bne 1b
+ subf r3,r3,r4
+ blr
+
+ .globl memset
+memset:
+ rlwimi r4,r4,8,16,23
+ rlwimi r4,r4,16,0,15
+ addi r6,r3,-4
+ cmplwi 0,r5,4
+ blt 7f
+ stwu r4,4(r6)
+ beqlr
+ andi. r0,r6,3
+ add r5,r0,r5
+ subf r6,r0,r6
+ rlwinm r0,r5,32-2,2,31
+ mtctr r0
+ bdz 6f
+1: stwu r4,4(r6)
+ bdnz 1b
+6: andi. r5,r5,3
+7: cmpwi 0,r5,0
+ beqlr
+ mtctr r5
+ addi r6,r6,3
+8: stbu r4,1(r6)
+ bdnz 8b
+ blr
+
+ .globl memmove
+memmove:
+ cmplw 0,r3,r4
+ bgt backwards_memcpy
+ /* fall through */
+
+ .globl memcpy
+memcpy:
+ rlwinm. r7,r5,32-3,3,31 /* r7 = r5 >> 3 */
+ addi r6,r3,-4
+ addi r4,r4,-4
+ beq 2f /* if less than 8 bytes to do */
+ andi. r0,r6,3 /* get dest word aligned */
+ mtctr r7
+ bne 5f
+1: lwz r7,4(r4)
+ lwzu r8,8(r4)
+ stw r7,4(r6)
+ stwu r8,8(r6)
+ bdnz 1b
+ andi. r5,r5,7
+2: cmplwi 0,r5,4
+ blt 3f
+ lwzu r0,4(r4)
+ addi r5,r5,-4
+ stwu r0,4(r6)
+3: cmpwi 0,r5,0
+ beqlr
+ mtctr r5
+ addi r4,r4,3
+ addi r6,r6,3
+4: lbzu r0,1(r4)
+ stbu r0,1(r6)
+ bdnz 4b
+ blr
+5: subfic r0,r0,4
+ mtctr r0
+6: lbz r7,4(r4)
+ addi r4,r4,1
+ stb r7,4(r6)
+ addi r6,r6,1
+ bdnz 6b
+ subf r5,r0,r5
+ rlwinm. r7,r5,32-3,3,31
+ beq 2b
+ mtctr r7
+ b 1b
+
+ .globl backwards_memcpy
+backwards_memcpy:
+ rlwinm. r7,r5,32-3,3,31 /* r7 = r5 >> 3 */
+ add r6,r3,r5
+ add r4,r4,r5
+ beq 2f
+ andi. r0,r6,3
+ mtctr r7
+ bne 5f
+1: lwz r7,-4(r4)
+ lwzu r8,-8(r4)
+ stw r7,-4(r6)
+ stwu r8,-8(r6)
+ bdnz 1b
+ andi. r5,r5,7
+2: cmplwi 0,r5,4
+ blt 3f
+ lwzu r0,-4(r4)
+ subi r5,r5,4
+ stwu r0,-4(r6)
+3: cmpwi 0,r5,0
+ beqlr
+ mtctr r5
+4: lbzu r0,-1(r4)
+ stbu r0,-1(r6)
+ bdnz 4b
+ blr
+5: mtctr r0
+6: lbzu r7,-1(r4)
+ stbu r7,-1(r6)
+ bdnz 6b
+ subf r5,r0,r5
+ rlwinm. r7,r5,32-3,3,31
+ beq 2b
+ mtctr r7
+ b 1b
+
+ .globl memcmp
+memcmp:
+ cmpwi 0,r5,0
+ blelr
+ mtctr r5
+ addi r6,r3,-1
+ addi r4,r4,-1
+1: lbzu r3,1(r6)
+ lbzu r0,1(r4)
+ subf. r3,r0,r3
+ bdnzt 2,1b
+ blr
+
+
+/*
+ * Flush the dcache and invalidate the icache for a range of addresses.
+ *
+ * flush_cache(addr, len)
+ */
+ .global flush_cache
+flush_cache:
+ addi 4,4,0x1f /* len = (len + 0x1f) / 0x20 */
+ rlwinm. 4,4,27,5,31
+ mtctr 4
+ beqlr
+1: dcbf 0,3
+ icbi 0,3
+ addi 3,3,0x20
+ bdnz 1b
+ sync
+ isync
+ blr
+
diff --git a/arch/powerpc/boot/string.h b/arch/powerpc/boot/string.h
new file mode 100644
index 00000000000..9fdff1cc0d7
--- /dev/null
+++ b/arch/powerpc/boot/string.h
@@ -0,0 +1,17 @@
+#ifndef _PPC_BOOT_STRING_H_
+#define _PPC_BOOT_STRING_H_
+#include <stddef.h>
+
+extern char *strcpy(char *dest, const char *src);
+extern char *strncpy(char *dest, const char *src, size_t n);
+extern char *strcat(char *dest, const char *src);
+extern int strcmp(const char *s1, const char *s2);
+extern size_t strlen(const char *s);
+extern size_t strnlen(const char *s, size_t count);
+
+extern void *memset(void *s, int c, size_t n);
+extern void *memmove(void *dest, const void *src, unsigned long n);
+extern void *memcpy(void *dest, const void *src, unsigned long n);
+extern int memcmp(const void *s1, const void *s2, size_t n);
+
+#endif /* _PPC_BOOT_STRING_H_ */
diff --git a/arch/powerpc/boot/zImage.lds b/arch/powerpc/boot/zImage.lds
new file mode 100644
index 00000000000..4b6bb3ffe3d
--- /dev/null
+++ b/arch/powerpc/boot/zImage.lds
@@ -0,0 +1,46 @@
+OUTPUT_ARCH(powerpc:common)
+ENTRY(_zimage_start)
+SECTIONS
+{
+ . = (4*1024*1024);
+ _start = .;
+ .text :
+ {
+ *(.text)
+ *(.fixup)
+ }
+ _etext = .;
+ . = ALIGN(4096);
+ .data :
+ {
+ *(.rodata*)
+ *(.data*)
+ *(.sdata*)
+ __got2_start = .;
+ *(.got2)
+ __got2_end = .;
+ }
+
+ . = ALIGN(4096);
+ _vmlinux_start = .;
+ .kernel:vmlinux.strip : { *(.kernel:vmlinux.strip) }
+ _vmlinux_end = .;
+
+ . = ALIGN(4096);
+ _initrd_start = .;
+ .kernel:initrd : { *(.kernel:initrd) }
+ _initrd_end = .;
+
+ . = ALIGN(4096);
+ _edata = .;
+
+ . = ALIGN(4096);
+ __bss_start = .;
+ .bss :
+ {
+ *(.sbss)
+ *(.bss)
+ }
+ . = ALIGN(4096);
+ _end = . ;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 13:55:24 +0000