blob: b829f7b534be8d856cea11e8545339912f914b7b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001
2#ifndef _X86_64_BOOTSETUP_H
3#define _X86_64_BOOTSETUP_H 1
4
Venkatesh Pallipadif9ba7052005-05-01 08:58:51 -07005#define BOOT_PARAM_SIZE 4096
6extern char x86_boot_params[BOOT_PARAM_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -07007
8/*
9 * This is set up by the setup-routine at boot-time
10 */
11#define PARAM ((unsigned char *)x86_boot_params)
12#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
13#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
14#define ALT_MEM_K (*(unsigned int *) (PARAM+0x1e0))
15#define E820_MAP_NR (*(char*) (PARAM+E820NR))
16#define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
17#define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
18#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
19#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
20#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
21#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
22#define SAVED_VIDEO_MODE (*(unsigned short *) (PARAM+0x1FA))
23#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
24#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
25#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
26#define KERNEL_START (*(unsigned int *) (PARAM+0x214))
27#define INITRD_START (*(unsigned int *) (PARAM+0x218))
28#define INITRD_SIZE (*(unsigned int *) (PARAM+0x21c))
29#define EDID_INFO (*(struct edid_info *) (PARAM+0x140))
30#define EDD_NR (*(unsigned char *) (PARAM+EDDNR))
31#define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
32#define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
33#define EDD_BUF ((struct edd_info *) (PARAM+EDDBUF))
34#define COMMAND_LINE saved_command_line
35
36#define RAMDISK_IMAGE_START_MASK 0x07FF
37#define RAMDISK_PROMPT_FLAG 0x8000
38#define RAMDISK_LOAD_FLAG 0x4000
39
40#endif