arch/x86/include/asm/bootparam.h

   1 #ifndef _ASM_X86_BOOTPARAM_H
   2 #define _ASM_X86_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 /* setup data types */
  13 #define SETUP_NONE                      0
  14 #define SETUP_E820_EXT                  1
  15 #define SETUP_DTB                       2
  16
  17 /* extensible setup data list node */
  18 struct setup_data {
  19         __u64 next;
  20         __u32 type;
  21         __u32 len;
  22         __u8 data[0];
  23 };
  24
  25 struct setup_header {
  26         __u8    setup_sects;
  27         __u16   root_flags;
  28         __u32   syssize;
  29         __u16   ram_size;
  30 #define RAMDISK_IMAGE_START_MASK        0x07FF
  31 #define RAMDISK_PROMPT_FLAG             0x8000
  32 #define RAMDISK_LOAD_FLAG               0x4000
  33         __u16   vid_mode;
  34         __u16   root_dev;
  35         __u16   boot_flag;
  36         __u16   jump;
  37         __u32   header;
  38         __u16   version;
  39         __u32   realmode_swtch;
  40         __u16   start_sys;
  41         __u16   kernel_version;
  42         __u8    type_of_loader;
  43         __u8    loadflags;
  44 #define LOADED_HIGH     (1<<0)
  45 #define QUIET_FLAG      (1<<5)
  46 #define KEEP_SEGMENTS   (1<<6)
  47 #define CAN_USE_HEAP    (1<<7)
  48         __u16   setup_move_size;
  49         __u32   code32_start;
  50         __u32   ramdisk_image;
  51         __u32   ramdisk_size;
  52         __u32   bootsect_kludge;
  53         __u16   heap_end_ptr;
  54         __u8    ext_loader_ver;
  55         __u8    ext_loader_type;
  56         __u32   cmd_line_ptr;
  57         __u32   initrd_addr_max;
  58         __u32   kernel_alignment;
  59         __u8    relocatable_kernel;
  60         __u8    _pad2[3];
  61         __u32   cmdline_size;
  62         __u32   hardware_subarch;
  63         __u64   hardware_subarch_data;
  64         __u32   payload_offset;
  65         __u32   payload_length;
  66         __u64   setup_data;
  67 } __attribute__((packed));
  68
  69 struct sys_desc_table {
  70         __u16 length;
  71         __u8  table[14];
  72 };
  73
  74 /* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
  75 struct olpc_ofw_header {
  76         __u32 ofw_magic;        /* OFW signature */
  77         __u32 ofw_version;
  78         __u32 cif_handler;      /* callback into OFW */
  79         __u32 irq_desc_table;
  80 } __attribute__((packed));
  81
  82 struct efi_info {
  83         __u32 efi_loader_signature;
  84         __u32 efi_systab;
  85         __u32 efi_memdesc_size;
  86         __u32 efi_memdesc_version;
  87         __u32 efi_memmap;
  88         __u32 efi_memmap_size;
  89         __u32 efi_systab_hi;
  90         __u32 efi_memmap_hi;
  91 };
  92
  93 /* The so-called "zeropage" */
  94 struct boot_params {
  95         struct screen_info screen_info;                 /* 0x000 */
  96         struct apm_bios_info apm_bios_info;             /* 0x040 */
  97         __u8  _pad2[4];                                 /* 0x054 */
  98         __u64  tboot_addr;                              /* 0x058 */
  99         struct ist_info ist_info;                       /* 0x060 */
 100         __u8  _pad3[16];                                /* 0x070 */
 101         __u8  hd0_info[16];     /* obsolete! */         /* 0x080 */
 102         __u8  hd1_info[16];     /* obsolete! */         /* 0x090 */
 103         struct sys_desc_table sys_desc_table;           /* 0x0a0 */
 104         struct olpc_ofw_header olpc_ofw_header;         /* 0x0b0 */
 105         __u8  _pad4[128];                               /* 0x0c0 */
 106         struct edid_info edid_info;                     /* 0x140 */
 107         struct efi_info efi_info;                       /* 0x1c0 */
 108         __u32 alt_mem_k;                                /* 0x1e0 */
 109         __u32 scratch;          /* Scratch field! */    /* 0x1e4 */
 110         __u8  e820_entries;                             /* 0x1e8 */
 111         __u8  eddbuf_entries;                           /* 0x1e9 */
 112         __u8  edd_mbr_sig_buf_entries;                  /* 0x1ea */
 113         __u8  _pad6[6];                                 /* 0x1eb */
 114         struct setup_header hdr;    /* setup header */  /* 0x1f1 */
 115         __u8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];
 116         __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX];      /* 0x290 */
 117         struct e820entry e820_map[E820MAX];             /* 0x2d0 */
 118         __u8  _pad8[48];                                /* 0xcd0 */
 119         struct edd_info eddbuf[EDDMAXNR];               /* 0xd00 */
 120         __u8  _pad9[276];                               /* 0xeec */
 121 } __attribute__((packed));
 122
 123 enum {
 124         X86_SUBARCH_PC = 0,
 125         X86_SUBARCH_LGUEST,
 126         X86_SUBARCH_XEN,
 127         X86_SUBARCH_MRST,
 128         X86_SUBARCH_CE4100,
 129         X86_NR_SUBARCHS,
 130 };
 131
 132
 133
 134 #endif /* _ASM_X86_BOOTPARAM_H */