1 2#ifndef _X86_64_BOOTSETUP_H 3#define _X86_64_BOOTSETUP_H 1 4 5#define BOOT_PARAM_SIZE 4096 6extern char x86_boot_params[BOOT_PARAM_SIZE]; 7 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 boot_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 41