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https://github.com/torvalds/linux
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40 lines
1.6 KiB
C
40 lines
1.6 KiB
C
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#ifndef _X86_64_BOOTSETUP_H
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#define _X86_64_BOOTSETUP_H 1
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extern char x86_boot_params[2048];
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/*
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* This is set up by the setup-routine at boot-time
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*/
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#define PARAM ((unsigned char *)x86_boot_params)
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#define SCREEN_INFO (*(struct screen_info *) (PARAM+0))
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#define EXT_MEM_K (*(unsigned short *) (PARAM+2))
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#define ALT_MEM_K (*(unsigned int *) (PARAM+0x1e0))
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#define E820_MAP_NR (*(char*) (PARAM+E820NR))
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#define E820_MAP ((struct e820entry *) (PARAM+E820MAP))
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#define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+0x40))
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#define DRIVE_INFO (*(struct drive_info_struct *) (PARAM+0x80))
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#define SYS_DESC_TABLE (*(struct sys_desc_table_struct*)(PARAM+0xa0))
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#define MOUNT_ROOT_RDONLY (*(unsigned short *) (PARAM+0x1F2))
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#define RAMDISK_FLAGS (*(unsigned short *) (PARAM+0x1F8))
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#define SAVED_VIDEO_MODE (*(unsigned short *) (PARAM+0x1FA))
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#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))
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#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))
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#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))
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#define KERNEL_START (*(unsigned int *) (PARAM+0x214))
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#define INITRD_START (*(unsigned int *) (PARAM+0x218))
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#define INITRD_SIZE (*(unsigned int *) (PARAM+0x21c))
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#define EDID_INFO (*(struct edid_info *) (PARAM+0x140))
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#define EDD_NR (*(unsigned char *) (PARAM+EDDNR))
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#define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
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#define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
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#define EDD_BUF ((struct edd_info *) (PARAM+EDDBUF))
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#define COMMAND_LINE saved_command_line
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#define RAMDISK_IMAGE_START_MASK 0x07FF
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#define RAMDISK_PROMPT_FLAG 0x8000
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#define RAMDISK_LOAD_FLAG 0x4000
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#endif
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