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   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 ext_mem_k;        /* 0x02 */
  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 cl_magic, cl_offset; /* 0x20 */
  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         __u8  _reserved[6];     /* 0x3a */
  46 } __attribute__((packed));
  47
  48 #define VIDEO_TYPE_MDA          0x10    /* Monochrome Text Display      */
  49 #define VIDEO_TYPE_CGA          0x11    /* CGA Display                  */
  50 #define VIDEO_TYPE_EGAM         0x20    /* EGA/VGA in Monochrome Mode   */
  51 #define VIDEO_TYPE_EGAC         0x21    /* EGA in Color Mode            */
  52 #define VIDEO_TYPE_VGAC         0x22    /* VGA+ in Color Mode           */
  53 #define VIDEO_TYPE_VLFB         0x23    /* VESA VGA in graphic mode     */
  54
  55 #define VIDEO_TYPE_PICA_S3      0x30    /* ACER PICA-61 local S3 video  */
  56 #define VIDEO_TYPE_MIPS_G364    0x31    /* MIPS Magnum 4000 G364 video  */
  57 #define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */
  58
  59 #define VIDEO_TYPE_TGAC         0x40    /* DEC TGA */
  60
  61 #define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
  62 #define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */
  63
  64 #define VIDEO_TYPE_PMAC         0x60    /* PowerMacintosh frame buffer. */
  65
  66 #define VIDEO_TYPE_EFI          0x70    /* EFI graphic mode             */
  67
  68 #ifdef __KERNEL__
  69 extern struct screen_info screen_info;
  70
  71 #define ORIG_X                  (screen_info.orig_x)
  72 #define ORIG_Y                  (screen_info.orig_y)
  73 #define ORIG_VIDEO_MODE         (screen_info.orig_video_mode)
  74 #define ORIG_VIDEO_COLS         (screen_info.orig_video_cols)
  75 #define ORIG_VIDEO_EGA_BX       (screen_info.orig_video_ega_bx)
  76 #define ORIG_VIDEO_LINES        (screen_info.orig_video_lines)
  77 #define ORIG_VIDEO_ISVGA        (screen_info.orig_video_isVGA)
  78 #define ORIG_VIDEO_POINTS       (screen_info.orig_video_points)
  79 #endif /* __KERNEL__ */
  80
  81 #endif /* _SCREEN_INFO_H */