1
2#ifndef _X86_64_BOOTSETUP_H
3#define _X86_64_BOOTSETUP_H 1
4
5extern char x86_boot_params[2048];
6
7/*
8 * This is set up by the setup-routine at boot-time
9 */
10#define PARAM	((unsigned char *)x86_boot_params)
11#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
12#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
13#define ALT_MEM_K (*(unsigned int *) (PARAM+0x1e0))
14#define E820_MAP_NR (*(char*) (PARAM+E820NR))
15#define E820_MAP    ((struct e820entry *) (PARAM+E820MAP))
16#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
17#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
18#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
19#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
20#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
21#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
22#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
23#define KERNEL_START (*(unsigned int *) (PARAM+0x214))
24#define INITRD_START (*(unsigned int *) (PARAM+0x218))
25#define INITRD_SIZE (*(unsigned int *) (PARAM+0x21c))
26#define COMMAND_LINE saved_command_line
27#define COMMAND_LINE_SIZE 256
28
29#define RAMDISK_IMAGE_START_MASK  	0x07FF
30#define RAMDISK_PROMPT_FLAG		0x8000
31#define RAMDISK_LOAD_FLAG		0x4000
32
33#endif
34