76 lines
3.0 KiB
C
76 lines
3.0 KiB
C
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/*
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* (C) Copyright 2002
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* Daniel Engstr<EFBFBD>m, Omicron Ceti AB, daniel@omicron.se
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef _ASM_ZIMAGE_H_
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#define _ASM_ZIMAGE_H_
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/* linux i386 zImage/bzImage header. Offsets relative to
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* the start of the image */
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#define CMD_LINE_MAGIC_OFF 0x020 /* Magic 0xa33f if the offset below is valid */
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#define CMD_LINE_OFFSET_OFF 0x022 /* Offset to comandline */
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#define SETUP_SECTS_OFF 0x1F1 /* The size of the setup in sectors */
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#define ROOT_FLAGS_OFF 0x1F2 /* If set, the root is mounted readonly */
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#define VID_MODE_OFF 0x1FA /* Video mode control */
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#define ROOT_DEV_OFF 0x1FC /* Default root device number */
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#define BOOT_FLAG_OFF 0x1FE /* 0xAA55 magic number */
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#define HEADER_OFF 0x202 /* Magic signature "HdrS" */
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#define VERSION_OFF 0x206 /* Boot protocol version supported */
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#define REALMODE_SWTCH_OFF 0x208 /* Boot loader hook (see below) */
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#define START_SYS_OFF 0x20C /* Points to kernel version string */
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#define TYPE_OF_LOADER_OFF 0x210 /* Boot loader identifier */
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#define LOADFLAGS_OFF 0x211 /* Boot protocol option flags */
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#define SETUP_MOVE_SIZE_OFF 0x212 /* Move to high memory size (used with hooks) */
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#define CODE32_START_OFF 0x214 /* Boot loader hook (see below) */
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#define RAMDISK_IMAGE_OFF 0x218 /* initrd load address (set by boot loader) */
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#define RAMDISK_SIZE_OFF 0x21C /* initrd size (set by boot loader) */
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#define HEAP_END_PTR_OFF 0x224 /* Free memory after setup end */
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#define CMD_LINE_PTR_OFF 0x228 /* 32-bit pointer to the kernel command line */
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#define HEAP_FLAG 0x80
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#define BIG_KERNEL_FLAG 0x01
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/* magic numbers */
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#define KERNEL_MAGIC 0xaa55
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#define KERNEL_V2_MAGIC 0x53726448
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#define COMMAND_LINE_MAGIC 0xA33F
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/* limits */
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#define BZIMAGE_MAX_SIZE 15*1024*1024 /* 15MB */
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#define ZIMAGE_MAX_SIZE 512*1024 /* 512k */
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#define SETUP_MAX_SIZE 32768
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#define SETUP_START_OFFSET 0x200
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#define BZIMAGE_LOAD_ADDR 0x100000
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#define ZIMAGE_LOAD_ADDR 0x10000
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void *load_zimage(char *image, unsigned long kernel_size,
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unsigned long initrd_addr, unsigned long initrd_size,
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int auto_boot);
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void boot_zimage(void *setup_base);
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image_header_t *fake_zimage_header(image_header_t *hdr, void *ptr, int size);
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#endif
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