3 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #ifndef _ASM_ZIMAGE_H_
25 #define _ASM_ZIMAGE_H_
27 /* linux i386 zImage/bzImage header. Offsets relative to
28 * the start of the image */
30 #define CMD_LINE_MAGIC_OFF 0x020 /* Magic 0xa33f if the offset below is valid */
31 #define CMD_LINE_OFFSET_OFF 0x022 /* Offset to comandline */
32 #define SETUP_SECTS_OFF 0x1F1 /* The size of the setup in sectors */
33 #define ROOT_FLAGS_OFF 0x1F2 /* If set, the root is mounted readonly */
34 #define VID_MODE_OFF 0x1FA /* Video mode control */
35 #define ROOT_DEV_OFF 0x1FC /* Default root device number */
36 #define BOOT_FLAG_OFF 0x1FE /* 0xAA55 magic number */
37 #define HEADER_OFF 0x202 /* Magic signature "HdrS" */
38 #define VERSION_OFF 0x206 /* Boot protocol version supported */
39 #define REALMODE_SWTCH_OFF 0x208 /* Boot loader hook (see below) */
40 #define START_SYS_OFF 0x20C /* Points to kernel version string */
41 #define TYPE_OF_LOADER_OFF 0x210 /* Boot loader identifier */
42 #define LOADFLAGS_OFF 0x211 /* Boot protocol option flags */
43 #define SETUP_MOVE_SIZE_OFF 0x212 /* Move to high memory size (used with hooks) */
44 #define CODE32_START_OFF 0x214 /* Boot loader hook (see below) */
45 #define RAMDISK_IMAGE_OFF 0x218 /* initrd load address (set by boot loader) */
46 #define RAMDISK_SIZE_OFF 0x21C /* initrd size (set by boot loader) */
47 #define HEAP_END_PTR_OFF 0x224 /* Free memory after setup end */
48 #define CMD_LINE_PTR_OFF 0x228 /* 32-bit pointer to the kernel command line */
51 #define HEAP_FLAG 0x80
52 #define BIG_KERNEL_FLAG 0x01
55 #define KERNEL_MAGIC 0xaa55
56 #define KERNEL_V2_MAGIC 0x53726448
57 #define COMMAND_LINE_MAGIC 0xA33F
60 #define BZIMAGE_MAX_SIZE 15*1024*1024 /* 15MB */
61 #define ZIMAGE_MAX_SIZE 512*1024 /* 512k */
62 #define SETUP_MAX_SIZE 32768
64 #define SETUP_START_OFFSET 0x200
65 #define BZIMAGE_LOAD_ADDR 0x100000
66 #define ZIMAGE_LOAD_ADDR 0x10000
68 void *load_zimage(char *image, unsigned long kernel_size,
69 unsigned long initrd_addr, unsigned long initrd_size,
72 void boot_zimage(void *setup_base);