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
+OBJCOPY_COFF_ARGS := -O aixcoff-rs6000 --set-start 0x500000
zlib := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
zlibheader := infblock.h infcodes.h inffast.h inftrees.h infutil.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 := crt0.S string.S prom.c stdio.c main.c div64.S
src-boot += $(zlib)
src-boot := $(addprefix $(obj)/, $(src-boot))
obj-boot := $(addsuffix .o, $(basename $(src-boot)))
cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
quiet_cmd_bootld = BOOTLD $@
- cmd_bootld = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(2)
+ cmd_bootld = $(CROSS32LD) -T $(srctree)/$(src)/$(3) -o $@ $(2)
$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
$(call if_changed_dep,bootcc)
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
+hostprogs-y := addnote addRamDisk hack-coff
+
+targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \
+ zImage.coff zImage.initrd.coff \
+ $(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 $@
quiet_cmd_addnote = ADDNOTE $@
cmd_addnote = $(obj)/addnote $@
+quiet_cmd_gencoff = COFF $@
+ cmd_gencoff = $(OBJCOPY) $(OBJCOPY_COFF_ARGS) $@ && \
+ $(obj)/hack-coff $@
+
$(call gz-sec, $(required)): $(obj)/kernel-%.gz: %
$(call if_changed,gzip)
$(call if_changed_dep,bootcc)
$(call cmd,addsection)
-$(obj)/zImage.vmode: obj-boot += $(call obj-sec, $(required))
+$(obj)/zImage.vmode $(obj)/zImage.coff: obj-boot += $(call obj-sec, $(required))
$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.lds
- $(call cmd,bootld,$(obj-boot))
+ $(call cmd,bootld,$(obj-boot),zImage.lds)
-$(obj)/zImage.initrd.vmode: obj-boot += $(call obj-sec, $(required) $(initrd))
+$(obj)/zImage.initrd.vmode $(obj)/zImage.initrd.coff: 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))
+ $(call cmd,bootld,$(obj-boot),zImage.lds)
+
+# For 32-bit powermacs, build the COFF images as well as the ELF images.
+coffimage-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.coff
+coffrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.initrd.coff
-$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote
+$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote $(coffimage-y-y)
@cp -f $< $@
$(call if_changed,addnote)
-$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote
+$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote $(coffrdimg-y-y)
@cp -f $< $@
$(call if_changed,addnote)
+$(obj)/zImage.coff: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff
+ $(call cmd,bootld,$(obj-boot),zImage.coff.lds)
+ $(call cmd,gencoff)
+
+$(obj)/zImage.initrd.coff: $(call obj-sec, $(required) $(initrd)) $(obj-boot) \
+ $(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff
+ $(call cmd,bootld,$(obj-boot),zImage.coff.lds)
+ $(call cmd,gencoff)
+
#-----------------------------------------------------------
# build u-boot images
#-----------------------------------------------------------
#include "ppc_asm.h"
.text
+ /* a procedure descriptor used when booting this as a COFF file */
+_zimage_start_opd:
+ .long _zimage_start, 0, 0, 0
+
.globl _zimage_start
_zimage_start:
+ /* Work out the offset between the address we were linked at
+ and the address where we're running. */
bl 1f
-
-1:
- mflr r0
+1: mflr r0
lis r9,1b@ha
addi r9,r9,1b@l
subf. r0,r9,r0
- beq 3f
+ beq 3f /* if running at same address as linked */
+ /* The .got2 section contains a list of addresses, so add
+ the address offset onto each entry. */
lis r9,__got2_start@ha
addi r9,r9,__got2_start@l
lis r8,__got2_end@ha
srwi. r8,r8,2
mtctr r8
add r9,r0,r9
-2:
- lwz r8,0(r9)
+2: lwz r8,0(r9)
add r8,r8,r0
stw r8,0(r9)
addi r9,r9,4
bdnz 2b
-3:
- lis r9,_start@h
+ /* Do a cache flush for our text, in case OF didn't */
+3: lis r9,_start@h
add r9,r0,r9
lis r8,_etext@ha
addi r8,r8,_etext@l
--- /dev/null
+/*
+ * hack-coff.c - hack the header of an xcoff file to fill in
+ * a few fields needed by the Open Firmware xcoff loader on
+ * Power Macs but not initialized by objcopy.
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include "rs6000.h"
+
+#define AOUT_MAGIC 0x010b
+
+#define get_16be(x) ((((unsigned char *)(x))[0] << 8) \
+ + ((unsigned char *)(x))[1])
+#define put_16be(x, v) (((unsigned char *)(x))[0] = (v) >> 8, \
+ ((unsigned char *)(x))[1] = (v) & 0xff)
+#define get_32be(x) ((((unsigned char *)(x))[0] << 24) \
+ + (((unsigned char *)(x))[1] << 16) \
+ + (((unsigned char *)(x))[2] << 8) \
+ + ((unsigned char *)(x))[3])
+
+int
+main(int ac, char **av)
+{
+ int fd;
+ int i, nsect;
+ int aoutsz;
+ struct external_filehdr fhdr;
+ AOUTHDR aout;
+ struct external_scnhdr shdr;
+
+ if (ac != 2) {
+ fprintf(stderr, "Usage: hack-coff coff-file\n");
+ exit(1);
+ }
+ if ((fd = open(av[1], 2)) == -1) {
+ perror(av[2]);
+ exit(1);
+ }
+ if (read(fd, &fhdr, sizeof(fhdr)) != sizeof(fhdr))
+ goto readerr;
+ i = get_16be(fhdr.f_magic);
+ if (i != U802TOCMAGIC && i != U802WRMAGIC && i != U802ROMAGIC) {
+ fprintf(stderr, "%s: not an xcoff file\n", av[1]);
+ exit(1);
+ }
+ aoutsz = get_16be(fhdr.f_opthdr);
+ if (read(fd, &aout, aoutsz) != aoutsz)
+ goto readerr;
+ nsect = get_16be(fhdr.f_nscns);
+ for (i = 0; i < nsect; ++i) {
+ if (read(fd, &shdr, sizeof(shdr)) != sizeof(shdr))
+ goto readerr;
+ if (strcmp(shdr.s_name, ".text") == 0) {
+ put_16be(aout.o_snentry, i+1);
+ put_16be(aout.o_sntext, i+1);
+ } else if (strcmp(shdr.s_name, ".data") == 0) {
+ put_16be(aout.o_sndata, i+1);
+ } else if (strcmp(shdr.s_name, ".bss") == 0) {
+ put_16be(aout.o_snbss, i+1);
+ }
+ }
+ put_16be(aout.magic, AOUT_MAGIC);
+ if (lseek(fd, (long) sizeof(struct external_filehdr), 0) == -1
+ || write(fd, &aout, aoutsz) != aoutsz) {
+ fprintf(stderr, "%s: write error\n", av[1]);
+ exit(1);
+ }
+ close(fd);
+ exit(0);
+
+readerr:
+ fprintf(stderr, "%s: read error or file too short\n", av[1]);
+ exit(1);
+}
/* Value picked to match that used by yaboot */
-#define PROG_START 0x01400000
-#define RAM_END (512<<20) // Fixme: use OF */
+#define PROG_START 0x01400000 /* only used on 64-bit systems */
+#define RAM_END (512<<20) /* Fixme: use OF */
#define ONE_MB 0x100000
extern char _start[];
elfoffset = (unsigned long)elf64ph->p_offset;
vmlinux.size = (unsigned long)elf64ph->p_filesz + elfoffset;
vmlinux.memsize = (unsigned long)elf64ph->p_memsz + elfoffset;
+
+#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
+
return 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);
+ /*
+ * 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);
+
vmlinuz.addr = (unsigned long)_vmlinux_start;
vmlinuz.size = (unsigned long)(_vmlinux_end - _vmlinux_start);
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
git.openpandora.org / pandora-kernel.git / commitdiff