include/linux/screen_info.h

   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 -- 0x3b reserved for future expansion */
  46                                 /* 0x3c -- 0x3f micro stack for relocatable kernels */
  47 };
  48
  49 extern struct screen_info screen_info;
  50
  51 #define ORIG_X                  (screen_info.orig_x)
  52 #define ORIG_Y                  (screen_info.orig_y)
  53 #define ORIG_VIDEO_MODE         (screen_info.orig_video_mode)
  54 #define ORIG_VIDEO_COLS         (screen_info.orig_video_cols)
  55 #define ORIG_VIDEO_EGA_BX       (screen_info.orig_video_ega_bx)
  56 #define ORIG_VIDEO_LINES        (screen_info.orig_video_lines)
  57 #define ORIG_VIDEO_ISVGA        (screen_info.orig_video_isVGA)
  58 #define ORIG_VIDEO_POINTS       (screen_info.orig_video_points)
  59
  60 #define VIDEO_TYPE_MDA          0x10    /* Monochrome Text Display      */
  61 #define VIDEO_TYPE_CGA          0x11    /* CGA Display                  */
  62 #define VIDEO_TYPE_EGAM         0x20    /* EGA/VGA in Monochrome Mode   */
  63 #define VIDEO_TYPE_EGAC         0x21    /* EGA in Color Mode            */
  64 #define VIDEO_TYPE_VGAC         0x22    /* VGA+ in Color Mode           */
  65 #define VIDEO_TYPE_VLFB         0x23    /* VESA VGA in graphic mode     */
  66
  67 #define VIDEO_TYPE_PICA_S3      0x30    /* ACER PICA-61 local S3 video  */
  68 #define VIDEO_TYPE_MIPS_G364    0x31    /* MIPS Magnum 4000 G364 video  */
  69 #define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */
  70
  71 #define VIDEO_TYPE_TGAC         0x40    /* DEC TGA */
  72
  73 #define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
  74 #define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */
  75
  76 #define VIDEO_TYPE_PMAC         0x60    /* PowerMacintosh frame buffer. */
  77
  78 #endif /* _SCREEN_INFO_H */