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C/C++ Source or Header  |  2006-08-11  |  2.5 KB  |  78 lines
  1. #ifndef _SCREEN_INFO_H
  2. #define _SCREEN_INFO_H
  3.  
  4. #include <linux/types.h>
  5.  
  6. /*
  7.  * These are set up by the setup-routine at boot-time:
  8.  */
  9.  
  10. struct screen_info {
  11.     u8  orig_x;        /* 0x00 */
  12.     u8  orig_y;        /* 0x01 */
  13.     u16 dontuse1;        /* 0x02 -- EXT_MEM_K sits here */
  14.     u16 orig_video_page;    /* 0x04 */
  15.     u8  orig_video_mode;    /* 0x06 */
  16.     u8  orig_video_cols;    /* 0x07 */
  17.     u16 unused2;        /* 0x08 */
  18.     u16 orig_video_ega_bx;    /* 0x0a */
  19.     u16 unused3;        /* 0x0c */
  20.     u8  orig_video_lines;    /* 0x0e */
  21.     u8  orig_video_isVGA;    /* 0x0f */
  22.     u16 orig_video_points;    /* 0x10 */
  23.  
  24.     /* VESA graphic mode -- linear frame buffer */
  25.     u16 lfb_width;        /* 0x12 */
  26.     u16 lfb_height;        /* 0x14 */
  27.     u16 lfb_depth;        /* 0x16 */
  28.     u32 lfb_base;        /* 0x18 */
  29.     u32 lfb_size;        /* 0x1c */
  30.     u16 dontuse2, dontuse3;    /* 0x20 -- CL_MAGIC and CL_OFFSET here */
  31.     u16 lfb_linelength;    /* 0x24 */
  32.     u8  red_size;        /* 0x26 */
  33.     u8  red_pos;        /* 0x27 */
  34.     u8  green_size;        /* 0x28 */
  35.     u8  green_pos;        /* 0x29 */
  36.     u8  blue_size;        /* 0x2a */
  37.     u8  blue_pos;        /* 0x2b */
  38.     u8  rsvd_size;        /* 0x2c */
  39.     u8  rsvd_pos;        /* 0x2d */
  40.     u16 vesapm_seg;        /* 0x2e */
  41.     u16 vesapm_off;        /* 0x30 */
  42.     u16 pages;        /* 0x32 */
  43.     u16 vesa_attributes;    /* 0x34 */
  44.     u32 capabilities;       /* 0x36 */
  45.                 /* 0x3a -- 0x3f reserved for future expansion */
  46. };
  47.  
  48. extern struct screen_info screen_info;
  49.  
  50. #define ORIG_X            (screen_info.orig_x)
  51. #define ORIG_Y            (screen_info.orig_y)
  52. #define ORIG_VIDEO_MODE        (screen_info.orig_video_mode)
  53. #define ORIG_VIDEO_COLS     (screen_info.orig_video_cols)
  54. #define ORIG_VIDEO_EGA_BX    (screen_info.orig_video_ega_bx)
  55. #define ORIG_VIDEO_LINES    (screen_info.orig_video_lines)
  56. #define ORIG_VIDEO_ISVGA    (screen_info.orig_video_isVGA)
  57. #define ORIG_VIDEO_POINTS       (screen_info.orig_video_points)
  58.  
  59. #define VIDEO_TYPE_MDA        0x10    /* Monochrome Text Display    */
  60. #define VIDEO_TYPE_CGA        0x11    /* CGA Display             */
  61. #define VIDEO_TYPE_EGAM        0x20    /* EGA/VGA in Monochrome Mode    */
  62. #define VIDEO_TYPE_EGAC        0x21    /* EGA in Color Mode        */
  63. #define VIDEO_TYPE_VGAC        0x22    /* VGA+ in Color Mode        */
  64. #define VIDEO_TYPE_VLFB        0x23    /* VESA VGA in graphic mode    */
  65.  
  66. #define VIDEO_TYPE_PICA_S3    0x30    /* ACER PICA-61 local S3 video    */
  67. #define VIDEO_TYPE_MIPS_G364    0x31    /* MIPS Magnum 4000 G364 video  */
  68. #define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */
  69.  
  70. #define VIDEO_TYPE_TGAC        0x40    /* DEC TGA */
  71.  
  72. #define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
  73. #define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */
  74.  
  75. #define VIDEO_TYPE_PMAC        0x60    /* PowerMacintosh frame buffer. */
  76.  
  77. #endif /* _SCREEN_INFO_H */
  78.