include/asm-x86/bootparam.h

   1 #ifndef _ASM_BOOTPARAM_H
   2 #define _ASM_BOOTPARAM_H
   3
   4 #include <linux/types.h>
   5 #include <linux/screen_info.h>
   6 #include <linux/apm_bios.h>
   7 #include <linux/edd.h>
   8 #include <asm/e820.h>
   9 #include <asm/ist.h>
  10 #include <video/edid.h>
  11
  12 struct setup_header {
  13         u8      setup_sects;
  14         u16     root_flags;
  15         u32     syssize;
  16         u16     ram_size;
  17 #define RAMDISK_IMAGE_START_MASK        0x07FF
  18 #define RAMDISK_PROMPT_FLAG             0x8000
  19 #define RAMDISK_LOAD_FLAG               0x4000
  20         u16     vid_mode;
  21         u16     root_dev;
  22         u16     boot_flag;
  23         u16     jump;
  24         u32     header;
  25         u16     version;
  26         u32     realmode_swtch;
  27         u16     start_sys;
  28         u16     kernel_version;
  29         u8      type_of_loader;
  30         u8      loadflags;
  31 #define LOADED_HIGH     (1<<0)
  32 #define KEEP_SEGMENTS   (1<<6)
  33 #define CAN_USE_HEAP    (1<<7)
  34         u16     setup_move_size;
  35         u32     code32_start;
  36         u32     ramdisk_image;
  37         u32     ramdisk_size;
  38         u32     bootsect_kludge;
  39         u16     heap_end_ptr;
  40         u16     _pad1;
  41         u32     cmd_line_ptr;
  42         u32     initrd_addr_max;
  43         u32     kernel_alignment;
  44         u8      relocatable_kernel;
  45         u8      _pad2[3];
  46         u32     cmdline_size;
  47         u32     hardware_subarch;
  48         u64     hardware_subarch_data;
  49 } __attribute__((packed));
  50
  51 struct sys_desc_table {
  52         u16 length;
  53         u8  table[14];
  54 };
  55
  56 struct efi_info {
  57         u32 _pad1;
  58         u32 efi_systab;
  59         u32 efi_memdesc_size;
  60         u32 efi_memdesc_version;
  61         u32 efi_memmap;
  62         u32 efi_memmap_size;
  63         u32 _pad2[2];
  64 };
  65
  66 /* The so-called "zeropage" */
  67 struct boot_params {
  68         struct screen_info screen_info;                 /* 0x000 */
  69         struct apm_bios_info apm_bios_info;             /* 0x040 */
  70         u8  _pad2[12];                                  /* 0x054 */
  71         struct ist_info ist_info;                       /* 0x060 */
  72         u8  _pad3[16];                                  /* 0x070 */
  73         u8  hd0_info[16];       /* obsolete! */         /* 0x080 */
  74         u8  hd1_info[16];       /* obsolete! */         /* 0x090 */
  75         struct sys_desc_table sys_desc_table;           /* 0x0a0 */
  76         u8  _pad4[144];                                 /* 0x0b0 */
  77         struct edid_info edid_info;                     /* 0x140 */
  78         struct efi_info efi_info;                       /* 0x1c0 */
  79         u32 alt_mem_k;                                  /* 0x1e0 */
  80         u32 scratch;            /* Scratch field! */    /* 0x1e4 */
  81         u8  e820_entries;                               /* 0x1e8 */
  82         u8  eddbuf_entries;                             /* 0x1e9 */
  83         u8  edd_mbr_sig_buf_entries;                    /* 0x1ea */
  84         u8  _pad6[6];                                   /* 0x1eb */
  85         struct setup_header hdr;    /* setup header */  /* 0x1f1 */
  86         u8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];
  87         u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX];        /* 0x290 */
  88         struct e820entry e820_map[E820MAX];             /* 0x2d0 */
  89         u8  _pad8[48];                                  /* 0xcd0 */
  90         struct edd_info eddbuf[EDDMAXNR];               /* 0xd00 */
  91         u8  _pad9[276];                                 /* 0xeec */
  92 } __attribute__((packed));
  93
  94 #endif /* _ASM_BOOTPARAM_H */