linux/include/linux/screen_info.h
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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
  10struct 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        __u8  flags;            /* 0x08 */
  18        __u8  unused2;          /* 0x09 */
  19        __u16 orig_video_ega_bx;/* 0x0a */
  20        __u16 unused3;          /* 0x0c */
  21        __u8  orig_video_lines; /* 0x0e */
  22        __u8  orig_video_isVGA; /* 0x0f */
  23        __u16 orig_video_points;/* 0x10 */
  24
  25        /* VESA graphic mode -- linear frame buffer */
  26        __u16 lfb_width;        /* 0x12 */
  27        __u16 lfb_height;       /* 0x14 */
  28        __u16 lfb_depth;        /* 0x16 */
  29        __u32 lfb_base;         /* 0x18 */
  30        __u32 lfb_size;         /* 0x1c */
  31        __u16 cl_magic, cl_offset; /* 0x20 */
  32        __u16 lfb_linelength;   /* 0x24 */
  33        __u8  red_size;         /* 0x26 */
  34        __u8  red_pos;          /* 0x27 */
  35        __u8  green_size;       /* 0x28 */
  36        __u8  green_pos;        /* 0x29 */
  37        __u8  blue_size;        /* 0x2a */
  38        __u8  blue_pos;         /* 0x2b */
  39        __u8  rsvd_size;        /* 0x2c */
  40        __u8  rsvd_pos;         /* 0x2d */
  41        __u16 vesapm_seg;       /* 0x2e */
  42        __u16 vesapm_off;       /* 0x30 */
  43        __u16 pages;            /* 0x32 */
  44        __u16 vesa_attributes;  /* 0x34 */
  45        __u32 capabilities;     /* 0x36 */
  46        __u8  _reserved[6];     /* 0x3a */
  47} __attribute__((packed));
  48
  49#define VIDEO_TYPE_MDA          0x10    /* Monochrome Text Display      */
  50#define VIDEO_TYPE_CGA          0x11    /* CGA Display                  */
  51#define VIDEO_TYPE_EGAM         0x20    /* EGA/VGA in Monochrome Mode   */
  52#define VIDEO_TYPE_EGAC         0x21    /* EGA in Color Mode            */
  53#define VIDEO_TYPE_VGAC         0x22    /* VGA+ in Color Mode           */
  54#define VIDEO_TYPE_VLFB         0x23    /* VESA VGA in graphic mode     */
  55
  56#define VIDEO_TYPE_PICA_S3      0x30    /* ACER PICA-61 local S3 video  */
  57#define VIDEO_TYPE_MIPS_G364    0x31    /* MIPS Magnum 4000 G364 video  */
  58#define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */
  59
  60#define VIDEO_TYPE_TGAC         0x40    /* DEC TGA */
  61
  62#define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
  63#define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */
  64
  65#define VIDEO_TYPE_PMAC         0x60    /* PowerMacintosh frame buffer. */
  66
  67#define VIDEO_TYPE_EFI          0x70    /* EFI graphic mode             */
  68
  69#define VIDEO_FLAGS_NOCURSOR    (1 << 0) /* The video mode has no cursor set */
  70
  71#ifdef __KERNEL__
  72extern struct screen_info screen_info;
  73
  74#define ORIG_X                  (screen_info.orig_x)
  75#define ORIG_Y                  (screen_info.orig_y)
  76#define ORIG_VIDEO_MODE         (screen_info.orig_video_mode)
  77#define ORIG_VIDEO_COLS         (screen_info.orig_video_cols)
  78#define ORIG_VIDEO_EGA_BX       (screen_info.orig_video_ega_bx)
  79#define ORIG_VIDEO_LINES        (screen_info.orig_video_lines)
  80#define ORIG_VIDEO_ISVGA        (screen_info.orig_video_isVGA)
  81#define ORIG_VIDEO_POINTS       (screen_info.orig_video_points)
  82#endif /* __KERNEL__ */
  83
  84#endif /* _SCREEN_INFO_H */
  85
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