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  • /*
     * (C) Copyright 2002
     * Daniel Engstrm, Omicron Ceti AB, daniel@omicron.se
    
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     *
    
     * 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
     * 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., 59 Temple Place, Suite 330, Boston,
     * MA 02111-1307 USA
     */
    
    #ifndef _ASM_ZIMAGE_H_
    #define _ASM_ZIMAGE_H_
    
    
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    /* 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
    #define COMMAND_LINE_MAGIC  0xA33F
    
    /* 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
    
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    #define BZIMAGE_LOAD_ADDR  0x100000
    
    #define ZIMAGE_LOAD_ADDR   0x10000
    
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    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);
    
    #endif