>From 45bc2bdccf16c27644abefec11a30a22ad001276 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@xxxxxxxxxxxx>
Date: Sun, 30 Nov 2008 21:15:32 +0100
Subject: [PATCH] sparc,sparc64: unify boot/
Simple unification:
o renamed piggyback to *_32.c/*_64.c
o copied content of Makefile from sparc64 to sparc and guard it
o updated sparc/boot/.gitignore
o deleted remaining files in sparc64/boot
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
arch/sparc/Makefile | 9 +--
arch/sparc/boot/.gitignore | 3 +
arch/sparc/boot/Makefile | 33 +++++++++-
arch/sparc/boot/piggyback.c | 137 ----------------------------------------
arch/sparc/boot/piggyback_32.c | 137 ++++++++++++++++++++++++++++++++++++++++
arch/sparc/boot/piggyback_64.c | 109 +++++++++++++++++++++++++++++++
arch/sparc64/boot/.gitignore | 4 -
arch/sparc64/boot/Makefile | 33 ----------
arch/sparc64/boot/piggyback.c | 109 -------------------------------
9 files changed, 283 insertions(+), 291 deletions(-)
delete mode 100644 arch/sparc/boot/piggyback.c
create mode 100644 arch/sparc/boot/piggyback_32.c
create mode 100644 arch/sparc/boot/piggyback_64.c
delete mode 100644 arch/sparc64/boot/.gitignore
delete mode 100644 arch/sparc64/boot/Makefile
delete mode 100644 arch/sparc64/boot/piggyback.c
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index 4b39ac6..efc9071 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -89,17 +89,16 @@ ifdef CONFIG_KALLSYMS
export kallsyms.o := .tmp_kallsyms2.o
endif
-boot-y := arch/sparc/boot
-boot-$(CONFIG_SPARC64) := arch/sparc64/boot
+boot := arch/sparc/boot
image zImage tftpboot.img vmlinux.aout: vmlinux
- $(Q)$(MAKE) $(build)=$(boot-y) $(boot-y)/$@
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
archclean:
- $(Q)$(MAKE) $(clean)=$(boot-y)
+ $(Q)$(MAKE) $(clean)=$(boot)
# This is the image used for packaging
-KBUILD_IMAGE := $(boot-y)/zImage
+KBUILD_IMAGE := $(boot)/zImage
# Don't use tabs in echo arguments.
ifeq ($(ARCH),sparc)
diff --git a/arch/sparc/boot/.gitignore b/arch/sparc/boot/.gitignore
index 8ffba57..fc6f398 100644
--- a/arch/sparc/boot/.gitignore
+++ b/arch/sparc/boot/.gitignore
@@ -2,4 +2,7 @@ btfix.S
btfixupprep
image
zImage
+tftpboot.img
+vmlinux.aout
+piggyback
diff --git a/arch/sparc/boot/Makefile b/arch/sparc/boot/Makefile
index 06b653d..77fc82c 100644
--- a/arch/sparc/boot/Makefile
+++ b/arch/sparc/boot/Makefile
@@ -6,14 +6,16 @@
ROOT_IMG := /usr/src/root.img
ELFTOAOUT := elftoaout
-hostprogs-y := piggyback btfixupprep
-targets := tftpboot.img btfix.o btfix.S image zImage
+hostprogs-y := piggyback_32 piggyback_64 btfixupprep
+targets := tftpboot.img btfix.o btfix.S image zImage vmlinux.aout
clean-files := System.map
quiet_cmd_elftoaout = ELFTOAOUT $@
cmd_elftoaout = $(ELFTOAOUT) $(obj)/image -o $@
+
+ifeq ($(CONFIG_SPARC32),y)
quiet_cmd_piggy = PIGGY $@
- cmd_piggy = $(obj)/piggyback $@ $(obj)/System.map $(ROOT_IMG)
+ cmd_piggy = $(obj)/piggyback_32 $@ $(obj)/System.map $(ROOT_IMG)
quiet_cmd_btfix = BTFIX $@
cmd_btfix = $(OBJDUMP) -x vmlinux | $(obj)/btfixupprep > $@
quiet_cmd_sysmap = SYSMAP $(obj)/System.map
@@ -62,3 +64,28 @@ $(obj)/tftpboot.img: $(obj)/piggyback $(obj)/System.map $(obj)/image FORCE
$(obj)/btfix.S: $(obj)/btfixupprep vmlinux FORCE
$(call if_changed,btfix)
+
+endif
+
+ifeq ($(CONFIG_SPARC64),y)
+quiet_cmd_piggy = PIGGY $@
+ cmd_piggy = $(obj)/piggyback_64 $@ System.map $(ROOT_IMG)
+quiet_cmd_strip = STRIP $@
+ cmd_strip = $(STRIP) -R .comment -R .note -K sun4u_init -K _end -K _start vmlinux -o $@
+
+
+# Actual linking
+$(obj)/image: vmlinux FORCE
+ $(call if_changed,strip)
+ @echo ' kernel: $@ is ready'
+
+$(obj)/tftpboot.img: vmlinux $(obj)/piggyback_64 System.map $(ROOT_IMG) FORCE
+ $(call if_changed,elftoaout)
+ $(call if_changed,piggy)
+ @echo ' kernel: $@ is ready'
+
+$(obj)/vmlinux.aout: vmlinux FORCE
+ $(call if_changed,elftoaout)
+ @echo ' kernel: $@ is ready'
+endif
+
diff --git a/arch/sparc/boot/piggyback.c b/arch/sparc/boot/piggyback.c
deleted file mode 100644
index c9f500c..0000000
--- a/arch/sparc/boot/piggyback.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- Simple utility to make a single-image install kernel with initial ramdisk
- for Sparc tftpbooting without need to set up nfs.
-
- Copyright (C) 1996 Jakub Jelinek (jj@xxxxxxxxxxxxxxxxxxx)
- Pete Zaitcev <zaitcev@xxxxxxxxx> endian fixes for cross-compiles, 2000.
-
- 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.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-/*
- * Note: run this on an a.out kernel (use elftoaout for it),
- * as PROM looks for a.out image only.
- */
-
-unsigned short ld2(char *p)
-{
- return (p[0] << 8) | p[1];
-}
-
-unsigned int ld4(char *p)
-{
- return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
-}
-
-void st4(char *p, unsigned int x)
-{
- p[0] = x >> 24;
- p[1] = x >> 16;
- p[2] = x >> 8;
- p[3] = x;
-}
-
-void usage(void)
-{
- /* fs_img.gz is an image of initial ramdisk. */
- fprintf(stderr, "Usage: piggyback vmlinux.aout System.map fs_img.gz\n");
- fprintf(stderr, "\tKernel image will be modified in place.\n");
- exit(1);
-}
-
-void die(char *str)
-{
- perror (str);
- exit(1);
-}
-
-int main(int argc,char **argv)
-{
- static char aout_magic[] = { 0x01, 0x03, 0x01, 0x07 };
- unsigned char buffer[1024], *q, *r;
- unsigned int i, j, k, start, end, offset;
- FILE *map;
- struct stat s;
- int image, tail;
-
- if (argc != 4) usage();
- start = end = 0;
- if (stat (argv[3], &s) < 0) die (argv[3]);
- map = fopen (argv[2], "r");
- if (!map) die(argv[2]);
- while (fgets (buffer, 1024, map)) {
- if (!strcmp (buffer + 8, " T start\n") || !strcmp (buffer + 16, " T start\n"))
- start = strtoul (buffer, NULL, 16);
- else if (!strcmp (buffer + 8, " A end\n") || !strcmp (buffer + 16, " A end\n"))
- end = strtoul (buffer, NULL, 16);
- }
- fclose (map);
- if (!start || !end) {
- fprintf (stderr, "Could not determine start and end from System.map\n");
- exit(1);
- }
- if ((image = open(argv[1],O_RDWR)) < 0) die(argv[1]);
- if (read(image,buffer,512) != 512) die(argv[1]);
- if (memcmp (buffer, "\177ELF", 4) == 0) {
- q = buffer + ld4(buffer + 28);
- i = ld4(q + 4) + ld4(buffer + 24) - ld4(q + 8);
- if (lseek(image,i,0) < 0) die("lseek");
- if (read(image,buffer,512) != 512) die(argv[1]);
- j = 0;
- } else if (memcmp(buffer, aout_magic, 4) == 0) {
- i = j = 32;
- } else {
- fprintf (stderr, "Not ELF nor a.out. Don't blame me.\n");
- exit(1);
- }
- k = i;
- i += (ld2(buffer + j + 2)<<2) - 512;
- if (lseek(image,i,0) < 0) die("lseek");
- if (read(image,buffer,1024) != 1024) die(argv[1]);
- for (q = buffer, r = q + 512; q < r; q += 4) {
- if (*q == 'H' && q[1] == 'd' && q[2] == 'r' && q[3] == 'S')
- break;
- }
- if (q == r) {
- fprintf (stderr, "Couldn't find headers signature in the kernel.\n");
- exit(1);
- }
- offset = i + (q - buffer) + 10;
- if (lseek(image, offset, 0) < 0) die ("lseek");
-
- st4(buffer, 0);
- st4(buffer + 4, 0x01000000);
- st4(buffer + 8, (end + 32 + 4095) & ~4095);
- st4(buffer + 12, s.st_size);
-
- if (write(image,buffer+2,14) != 14) die (argv[1]);
- if (lseek(image, k - start + ((end + 32 + 4095) & ~4095), 0) < 0) die ("lseek");
- if ((tail = open(argv[3],O_RDONLY)) < 0) die(argv[3]);
- while ((i = read (tail,buffer,1024)) > 0)
- if (write(image,buffer,i) != i) die (argv[1]);
- if (close(image) < 0) die("close");
- if (close(tail) < 0) die("close");
- return 0;
-}
diff --git a/arch/sparc/boot/piggyback_32.c b/arch/sparc/boot/piggyback_32.c
new file mode 100644
index 0000000..c9f500c
--- /dev/null
+++ b/arch/sparc/boot/piggyback_32.c
@@ -0,0 +1,137 @@
+/*
+ Simple utility to make a single-image install kernel with initial ramdisk
+ for Sparc tftpbooting without need to set up nfs.
+
+ Copyright (C) 1996 Jakub Jelinek (jj@xxxxxxxxxxxxxxxxxxx)
+ Pete Zaitcev <zaitcev@xxxxxxxxx> endian fixes for cross-compiles, 2000.
+
+ 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/*
+ * Note: run this on an a.out kernel (use elftoaout for it),
+ * as PROM looks for a.out image only.
+ */
+
+unsigned short ld2(char *p)
+{
+ return (p[0] << 8) | p[1];
+}
+
+unsigned int ld4(char *p)
+{
+ return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
+}
+
+void st4(char *p, unsigned int x)
+{
+ p[0] = x >> 24;
+ p[1] = x >> 16;
+ p[2] = x >> 8;
+ p[3] = x;
+}
+
+void usage(void)
+{
+ /* fs_img.gz is an image of initial ramdisk. */
+ fprintf(stderr, "Usage: piggyback vmlinux.aout System.map fs_img.gz\n");
+ fprintf(stderr, "\tKernel image will be modified in place.\n");
+ exit(1);
+}
+
+void die(char *str)
+{
+ perror (str);
+ exit(1);
+}
+
+int main(int argc,char **argv)
+{
+ static char aout_magic[] = { 0x01, 0x03, 0x01, 0x07 };
+ unsigned char buffer[1024], *q, *r;
+ unsigned int i, j, k, start, end, offset;
+ FILE *map;
+ struct stat s;
+ int image, tail;
+
+ if (argc != 4) usage();
+ start = end = 0;
+ if (stat (argv[3], &s) < 0) die (argv[3]);
+ map = fopen (argv[2], "r");
+ if (!map) die(argv[2]);
+ while (fgets (buffer, 1024, map)) {
+ if (!strcmp (buffer + 8, " T start\n") || !strcmp (buffer + 16, " T start\n"))
+ start = strtoul (buffer, NULL, 16);
+ else if (!strcmp (buffer + 8, " A end\n") || !strcmp (buffer + 16, " A end\n"))
+ end = strtoul (buffer, NULL, 16);
+ }
+ fclose (map);
+ if (!start || !end) {
+ fprintf (stderr, "Could not determine start and end from System.map\n");
+ exit(1);
+ }
+ if ((image = open(argv[1],O_RDWR)) < 0) die(argv[1]);
+ if (read(image,buffer,512) != 512) die(argv[1]);
+ if (memcmp (buffer, "\177ELF", 4) == 0) {
+ q = buffer + ld4(buffer + 28);
+ i = ld4(q + 4) + ld4(buffer + 24) - ld4(q + 8);
+ if (lseek(image,i,0) < 0) die("lseek");
+ if (read(image,buffer,512) != 512) die(argv[1]);
+ j = 0;
+ } else if (memcmp(buffer, aout_magic, 4) == 0) {
+ i = j = 32;
+ } else {
+ fprintf (stderr, "Not ELF nor a.out. Don't blame me.\n");
+ exit(1);
+ }
+ k = i;
+ i += (ld2(buffer + j + 2)<<2) - 512;
+ if (lseek(image,i,0) < 0) die("lseek");
+ if (read(image,buffer,1024) != 1024) die(argv[1]);
+ for (q = buffer, r = q + 512; q < r; q += 4) {
+ if (*q == 'H' && q[1] == 'd' && q[2] == 'r' && q[3] == 'S')
+ break;
+ }
+ if (q == r) {
+ fprintf (stderr, "Couldn't find headers signature in the kernel.\n");
+ exit(1);
+ }
+ offset = i + (q - buffer) + 10;
+ if (lseek(image, offset, 0) < 0) die ("lseek");
+
+ st4(buffer, 0);
+ st4(buffer + 4, 0x01000000);
+ st4(buffer + 8, (end + 32 + 4095) & ~4095);
+ st4(buffer + 12, s.st_size);
+
+ if (write(image,buffer+2,14) != 14) die (argv[1]);
+ if (lseek(image, k - start + ((end + 32 + 4095) & ~4095), 0) < 0) die ("lseek");
+ if ((tail = open(argv[3],O_RDONLY)) < 0) die(argv[3]);
+ while ((i = read (tail,buffer,1024)) > 0)
+ if (write(image,buffer,i) != i) die (argv[1]);
+ if (close(image) < 0) die("close");
+ if (close(tail) < 0) die("close");
+ return 0;
+}
diff --git a/arch/sparc/boot/piggyback_64.c b/arch/sparc/boot/piggyback_64.c
new file mode 100644
index 0000000..de364bf
--- /dev/null
+++ b/arch/sparc/boot/piggyback_64.c
@@ -0,0 +1,109 @@
+/*
+ Simple utility to make a single-image install kernel with initial ramdisk
+ for Sparc64 tftpbooting without need to set up nfs.
+
+ Copyright (C) 1997 Jakub Jelinek (jj@xxxxxxxxxxxxxxxxxxx)
+
+ 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* Note: run this on an a.out kernel (use elftoaout for it), as PROM looks for a.out image onlly
+ usage: piggyback vmlinux System.map tail, where tail is gzipped fs of the initial ramdisk */
+
+void die(char *str)
+{
+ perror (str);
+ exit(1);
+}
+
+int main(int argc,char **argv)
+{
+ char buffer [1024], *q, *r;
+ unsigned int i, j, k, start, end, offset;
+ FILE *map;
+ struct stat s;
+ int image, tail;
+
+ if (stat (argv[3], &s) < 0) die (argv[3]);
+ map = fopen (argv[2], "r");
+ if (!map) die(argv[2]);
+ while (fgets (buffer, 1024, map)) {
+ if (!strcmp (buffer + 19, "_start\n"))
+ start = strtoul (buffer + 8, NULL, 16);
+ else if (!strcmp (buffer + 19, "_end\n"))
+ end = strtoul (buffer + 8, NULL, 16);
+ }
+ fclose (map);
+ if ((image = open(argv[1],O_RDWR)) < 0) die(argv[1]);
+ if (read(image,buffer,512) != 512) die(argv[1]);
+ if (!memcmp (buffer, "\177ELF", 4)) {
+ unsigned int *p = (unsigned int *)(buffer + *(unsigned int *)(buffer + 28));
+
+ i = p[1] + *(unsigned int *)(buffer + 24) - p[2];
+ if (lseek(image,i,0) < 0) die("lseek");
+ if (read(image,buffer,512) != 512) die(argv[1]);
+ j = 0;
+ } else if (*(unsigned int *)buffer == 0x01030107) {
+ i = j = 32;
+ } else {
+ fprintf (stderr, "Not ELF nor a.out. Don't blame me.\n");
+ exit(1);
+ }
+ k = i;
+ if (j == 32 && buffer[40] == 'H' && buffer[41] == 'd' && buffer[42] == 'r' && buffer[43] == 'S') {
+ offset = 40 + 10;
+ } else {
+ i += ((*(unsigned short *)(buffer + j + 2))<<2) - 512;
+ if (lseek(image,i,0) < 0) die("lseek");
+ if (read(image,buffer,1024) != 1024) die(argv[1]);
+ for (q = buffer, r = q + 512; q < r; q += 4) {
+ if (*q == 'H' && q[1] == 'd' && q[2] == 'r' && q[3] == 'S')
+ break;
+ }
+ if (q == r) {
+ fprintf (stderr, "Couldn't find headers signature in the kernel.\n");
+ exit(1);
+ }
+ offset = i + (q - buffer) + 10;
+ }
+ if (lseek(image, offset, 0) < 0) die ("lseek");
+ *(unsigned *)buffer = 0;
+ *(unsigned *)(buffer + 4) = 0x01000000;
+ *(unsigned *)(buffer + 8) = ((end + 32 + 8191) & ~8191);
+ *(unsigned *)(buffer + 12) = s.st_size;
+ if (write(image,buffer+2,14) != 14) die (argv[1]);
+ if (lseek(image, 4, 0) < 0) die ("lseek");
+ *(unsigned *)buffer = ((end + 32 + 8191) & ~8191) - (start & ~0x3fffffUL) + s.st_size;
+ *(unsigned *)(buffer + 4) = 0;
+ *(unsigned *)(buffer + 8) = 0;
+ if (write(image,buffer,12) != 12) die (argv[1]);
+ if (lseek(image, k - start + ((end + 32 + 8191) & ~8191), 0) < 0) die ("lseek");
+ if ((tail = open(argv[3],O_RDONLY)) < 0) die(argv[3]);
+ while ((i = read (tail,buffer,1024)) > 0)
+ if (write(image,buffer,i) != i) die (argv[1]);
+ if (close(image) < 0) die("close");
+ if (close(tail) < 0) die("close");
+ return 0;
+}
diff --git a/arch/sparc64/boot/.gitignore b/arch/sparc64/boot/.gitignore
deleted file mode 100644
index 36356f9..0000000
--- a/arch/sparc64/boot/.gitignore
+++ /dev/null
@@ -1,4 +0,0 @@
-image
-tftpboot.img
-vmlinux.aout
-piggyback
diff --git a/arch/sparc64/boot/Makefile b/arch/sparc64/boot/Makefile
deleted file mode 100644
index 0458b52..0000000
--- a/arch/sparc64/boot/Makefile
+++ /dev/null
@@ -1,33 +0,0 @@
-# Makefile for the Sparc64 boot stuff.
-#
-# Copyright (C) 1995 David S. Miller (davem@xxxxxxxxxxxxxxxx)
-# Copyright (C) 1997 Jakub Jelinek (jj@xxxxxxxxxxxxxxxxxxx)
-
-ROOT_IMG := /usr/src/root.img
-ELFTOAOUT := elftoaout
-
-hostprogs-y := piggyback
-targets := image tftpboot.img vmlinux.aout
-
-quiet_cmd_elftoaout = ELF2AOUT $@
- cmd_elftoaout = $(ELFTOAOUT) vmlinux -o $@
-quiet_cmd_piggy = PIGGY $@
- cmd_piggy = $(obj)/piggyback $@ System.map $(ROOT_IMG)
-quiet_cmd_strip = STRIP $@
- cmd_strip = $(STRIP) -R .comment -R .note -K sun4u_init -K _end -K _start vmlinux -o $@
-
-
-# Actual linking
-$(obj)/image: vmlinux FORCE
- $(call if_changed,strip)
- @echo ' kernel: $@ is ready'
-
-$(obj)/tftpboot.img: vmlinux $(obj)/piggyback System.map $(ROOT_IMG) FORCE
- $(call if_changed,elftoaout)
- $(call if_changed,piggy)
- @echo ' kernel: $@ is ready'
-
-$(obj)/vmlinux.aout: vmlinux FORCE
- $(call if_changed,elftoaout)
- @echo ' kernel: $@ is ready'
-
diff --git a/arch/sparc64/boot/piggyback.c b/arch/sparc64/boot/piggyback.c
deleted file mode 100644
index de364bf..0000000
--- a/arch/sparc64/boot/piggyback.c
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- Simple utility to make a single-image install kernel with initial ramdisk
- for Sparc64 tftpbooting without need to set up nfs.
-
- Copyright (C) 1997 Jakub Jelinek (jj@xxxxxxxxxxxxxxxxxxx)
-
- 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.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-/* Note: run this on an a.out kernel (use elftoaout for it), as PROM looks for a.out image onlly
- usage: piggyback vmlinux System.map tail, where tail is gzipped fs of the initial ramdisk */
-
-void die(char *str)
-{
- perror (str);
- exit(1);
-}
-
-int main(int argc,char **argv)
-{
- char buffer [1024], *q, *r;
- unsigned int i, j, k, start, end, offset;
- FILE *map;
- struct stat s;
- int image, tail;
-
- if (stat (argv[3], &s) < 0) die (argv[3]);
- map = fopen (argv[2], "r");
- if (!map) die(argv[2]);
- while (fgets (buffer, 1024, map)) {
- if (!strcmp (buffer + 19, "_start\n"))
- start = strtoul (buffer + 8, NULL, 16);
- else if (!strcmp (buffer + 19, "_end\n"))
- end = strtoul (buffer + 8, NULL, 16);
- }
- fclose (map);
- if ((image = open(argv[1],O_RDWR)) < 0) die(argv[1]);
- if (read(image,buffer,512) != 512) die(argv[1]);
- if (!memcmp (buffer, "\177ELF", 4)) {
- unsigned int *p = (unsigned int *)(buffer + *(unsigned int *)(buffer + 28));
-
- i = p[1] + *(unsigned int *)(buffer + 24) - p[2];
- if (lseek(image,i,0) < 0) die("lseek");
- if (read(image,buffer,512) != 512) die(argv[1]);
- j = 0;
- } else if (*(unsigned int *)buffer == 0x01030107) {
- i = j = 32;
- } else {
- fprintf (stderr, "Not ELF nor a.out. Don't blame me.\n");
- exit(1);
- }
- k = i;
- if (j == 32 && buffer[40] == 'H' && buffer[41] == 'd' && buffer[42] == 'r' && buffer[43] == 'S') {
- offset = 40 + 10;
- } else {
- i += ((*(unsigned short *)(buffer + j + 2))<<2) - 512;
- if (lseek(image,i,0) < 0) die("lseek");
- if (read(image,buffer,1024) != 1024) die(argv[1]);
- for (q = buffer, r = q + 512; q < r; q += 4) {
- if (*q == 'H' && q[1] == 'd' && q[2] == 'r' && q[3] == 'S')
- break;
- }
- if (q == r) {
- fprintf (stderr, "Couldn't find headers signature in the kernel.\n");
- exit(1);
- }
- offset = i + (q - buffer) + 10;
- }
- if (lseek(image, offset, 0) < 0) die ("lseek");
- *(unsigned *)buffer = 0;
- *(unsigned *)(buffer + 4) = 0x01000000;
- *(unsigned *)(buffer + 8) = ((end + 32 + 8191) & ~8191);
- *(unsigned *)(buffer + 12) = s.st_size;
- if (write(image,buffer+2,14) != 14) die (argv[1]);
- if (lseek(image, 4, 0) < 0) die ("lseek");
- *(unsigned *)buffer = ((end + 32 + 8191) & ~8191) - (start & ~0x3fffffUL) + s.st_size;
- *(unsigned *)(buffer + 4) = 0;
- *(unsigned *)(buffer + 8) = 0;
- if (write(image,buffer,12) != 12) die (argv[1]);
- if (lseek(image, k - start + ((end + 32 + 8191) & ~8191), 0) < 0) die ("lseek");
- if ((tail = open(argv[3],O_RDONLY)) < 0) die(argv[3]);
- while ((i = read (tail,buffer,1024)) > 0)
- if (write(image,buffer,i) != i) die (argv[1]);
- if (close(image) < 0) die("close");
- if (close(tail) < 0) die("close");
- return 0;
-}
--
1.5.6.GIT
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