arch/x86/boot/vesa.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 #ifndef BOOT_VESA_H
  14 #define BOOT_VESA_H
  15
  16 typedef struct {
  17         u16 off, seg;
  18 } far_ptr;
  19
  20 /* VESA General Information table */
  21 struct vesa_general_info {
  22         u32 signature;          /* 0 Magic number = "VESA" */
  23         u16 version;            /* 4 */
  24         far_ptr vendor_string;  /* 6 */
  25         u32 capabilities;       /* 10 */
  26         far_ptr video_mode_ptr; /* 14 */
  27         u16 total_memory;       /* 18 */
  28
  29         u8 reserved[236];       /* 20 */
  30 } __attribute__ ((packed));
  31
  32 #define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
  33
  34 struct vesa_mode_info {
  35         u16 mode_attr;          /* 0 */
  36         u8 win_attr[2];         /* 2 */
  37         u16 win_grain;          /* 4 */
  38         u16 win_size;           /* 6 */
  39         u16 win_seg[2];         /* 8 */
  40         far_ptr win_scheme;     /* 12 */
  41         u16 logical_scan;       /* 16 */
  42
  43         u16 h_res;              /* 18 */
  44         u16 v_res;              /* 20 */
  45         u8 char_width;          /* 22 */
  46         u8 char_height;         /* 23 */
  47         u8 memory_planes;       /* 24 */
  48         u8 bpp;                 /* 25 */
  49         u8 banks;               /* 26 */
  50         u8 memory_layout;       /* 27 */
  51         u8 bank_size;           /* 28 */
  52         u8 image_planes;        /* 29 */
  53         u8 page_function;       /* 30 */
  54
  55         u8 rmask;               /* 31 */
  56         u8 rpos;                /* 32 */
  57         u8 gmask;               /* 33 */
  58         u8 gpos;                /* 34 */
  59         u8 bmask;               /* 35 */
  60         u8 bpos;                /* 36 */
  61         u8 resv_mask;           /* 37 */
  62         u8 resv_pos;            /* 38 */
  63         u8 dcm_info;            /* 39 */
  64
  65         u32 lfb_ptr;            /* 40 Linear frame buffer address */
  66         u32 offscreen_ptr;      /* 44 Offscreen memory address */
  67         u16 offscreen_size;     /* 48 */
  68
  69         u8 reserved[206];       /* 50 */
  70 } __attribute__ ((packed));
  71
  72 #endif                          /* LIB_SYS_VESA_H */