arch/x86/include/asm/zimage.h

   1 /*
   2  * (C) Copyright 2002
   3  * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef _ASM_ZIMAGE_H_
   9 #define _ASM_ZIMAGE_H_
  10
  11 #include <asm/bootparam.h>
  12 #include <asm/e820.h>
  13
  14 /* linux i386 zImage/bzImage header. Offsets relative to
  15  * the start of the image */
  16
  17 #define HEAP_FLAG           0x80
  18 #define BIG_KERNEL_FLAG     0x01
  19
  20 /* magic numbers */
  21 #define KERNEL_MAGIC        0xaa55
  22 #define KERNEL_V2_MAGIC     0x53726448
  23 #define COMMAND_LINE_MAGIC  0xA33F
  24
  25 /* limits */
  26 #define BZIMAGE_MAX_SIZE   15*1024*1024     /* 15MB */
  27 #define ZIMAGE_MAX_SIZE    512*1024         /* 512k */
  28 #define SETUP_MAX_SIZE     32768
  29
  30 #define SETUP_START_OFFSET 0x200
  31 #define BZIMAGE_LOAD_ADDR  0x100000
  32 #define ZIMAGE_LOAD_ADDR   0x10000
  33
  34 /* Implementation defined function to install an e820 map. */
  35 unsigned install_e820_map(unsigned max_entries, struct e820entry *);
  36
  37 struct boot_params *load_zimage(char *image, unsigned long kernel_size,
  38                                 void **load_address);
  39 int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
  40                  unsigned long initrd_addr, unsigned long initrd_size);
  41
  42 void boot_zimage(void *setup_base, void *load_address);
  43
  44 #endif