blob: c7103b1f37e5f8867c2ee2b56f6748e417157bb8 [file] [log] [blame]
* (C) Copyright 2002
* Daniel Engström, Omicron Ceti AB,
* See file CREDITS for list of people who contributed to this
* project.
* 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
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
#ifndef _ASM_ZIMAGE_H_
#define _ASM_ZIMAGE_H_
/* linux i386 zImage/bzImage header. Offsets relative to
* the start of the image */
#define CMD_LINE_MAGIC_OFF 0x020 /* Magic 0xa33f if the offset below is valid */
#define CMD_LINE_OFFSET_OFF 0x022 /* Offset to comandline */
#define SETUP_SECTS_OFF 0x1F1 /* The size of the setup in sectors */
#define ROOT_FLAGS_OFF 0x1F2 /* If set, the root is mounted readonly */
#define VID_MODE_OFF 0x1FA /* Video mode control */
#define ROOT_DEV_OFF 0x1FC /* Default root device number */
#define BOOT_FLAG_OFF 0x1FE /* 0xAA55 magic number */
#define HEADER_OFF 0x202 /* Magic signature "HdrS" */
#define VERSION_OFF 0x206 /* Boot protocol version supported */
#define REALMODE_SWTCH_OFF 0x208 /* Boot loader hook (see below) */
#define START_SYS_OFF 0x20C /* Points to kernel version string */
#define TYPE_OF_LOADER_OFF 0x210 /* Boot loader identifier */
#define LOADFLAGS_OFF 0x211 /* Boot protocol option flags */
#define SETUP_MOVE_SIZE_OFF 0x212 /* Move to high memory size (used with hooks) */
#define CODE32_START_OFF 0x214 /* Boot loader hook (see below) */
#define RAMDISK_IMAGE_OFF 0x218 /* initrd load address (set by boot loader) */
#define RAMDISK_SIZE_OFF 0x21C /* initrd size (set by boot loader) */
#define HEAP_END_PTR_OFF 0x224 /* Free memory after setup end */
#define CMD_LINE_PTR_OFF 0x228 /* 32-bit pointer to the kernel command line */
#define HEAP_FLAG 0x80
#define BIG_KERNEL_FLAG 0x01
/* magic numbers */
#define KERNEL_MAGIC 0xaa55
#define KERNEL_V2_MAGIC 0x53726448
/* limits */
#define BZIMAGE_MAX_SIZE 15*1024*1024 /* 15MB */
#define ZIMAGE_MAX_SIZE 512*1024 /* 512k */
#define SETUP_MAX_SIZE 32768
#define SETUP_START_OFFSET 0x200
#define BZIMAGE_LOAD_ADDR 0x100000
#define ZIMAGE_LOAD_ADDR 0x10000
void *load_zimage(char *image, unsigned long kernel_size,
unsigned long initrd_addr, unsigned long initrd_size,
int auto_boot);
void boot_zimage(void *setup_base);
image_header_t *fake_zimage_header(image_header_t *hdr, void *ptr, int size);