screen_info.h 2.6 KB

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  1. #ifndef _SCREEN_INFO_H
  2. #define _SCREEN_INFO_H
  3. #include <linux/types.h>
  4. /*
  5. * These are set up by the setup-routine at boot-time:
  6. */
  7. struct screen_info {
  8. u8 orig_x; /* 0x00 */
  9. u8 orig_y; /* 0x01 */
  10. u16 dontuse1; /* 0x02 -- EXT_MEM_K sits here */
  11. u16 orig_video_page; /* 0x04 */
  12. u8 orig_video_mode; /* 0x06 */
  13. u8 orig_video_cols; /* 0x07 */
  14. u16 unused2; /* 0x08 */
  15. u16 orig_video_ega_bx; /* 0x0a */
  16. u16 unused3; /* 0x0c */
  17. u8 orig_video_lines; /* 0x0e */
  18. u8 orig_video_isVGA; /* 0x0f */
  19. u16 orig_video_points; /* 0x10 */
  20. /* VESA graphic mode -- linear frame buffer */
  21. u16 lfb_width; /* 0x12 */
  22. u16 lfb_height; /* 0x14 */
  23. u16 lfb_depth; /* 0x16 */
  24. u32 lfb_base; /* 0x18 */
  25. u32 lfb_size; /* 0x1c */
  26. u16 dontuse2, dontuse3; /* 0x20 -- CL_MAGIC and CL_OFFSET here */
  27. u16 lfb_linelength; /* 0x24 */
  28. u8 red_size; /* 0x26 */
  29. u8 red_pos; /* 0x27 */
  30. u8 green_size; /* 0x28 */
  31. u8 green_pos; /* 0x29 */
  32. u8 blue_size; /* 0x2a */
  33. u8 blue_pos; /* 0x2b */
  34. u8 rsvd_size; /* 0x2c */
  35. u8 rsvd_pos; /* 0x2d */
  36. u16 vesapm_seg; /* 0x2e */
  37. u16 vesapm_off; /* 0x30 */
  38. u16 pages; /* 0x32 */
  39. u16 vesa_attributes; /* 0x34 */
  40. u32 capabilities; /* 0x36 */
  41. /* 0x3a -- 0x3b reserved for future expansion */
  42. /* 0x3c -- 0x3f micro stack for relocatable kernels */
  43. };
  44. extern struct screen_info screen_info;
  45. #define ORIG_X (screen_info.orig_x)
  46. #define ORIG_Y (screen_info.orig_y)
  47. #define ORIG_VIDEO_MODE (screen_info.orig_video_mode)
  48. #define ORIG_VIDEO_COLS (screen_info.orig_video_cols)
  49. #define ORIG_VIDEO_EGA_BX (screen_info.orig_video_ega_bx)
  50. #define ORIG_VIDEO_LINES (screen_info.orig_video_lines)
  51. #define ORIG_VIDEO_ISVGA (screen_info.orig_video_isVGA)
  52. #define ORIG_VIDEO_POINTS (screen_info.orig_video_points)
  53. #define VIDEO_TYPE_MDA 0x10 /* Monochrome Text Display */
  54. #define VIDEO_TYPE_CGA 0x11 /* CGA Display */
  55. #define VIDEO_TYPE_EGAM 0x20 /* EGA/VGA in Monochrome Mode */
  56. #define VIDEO_TYPE_EGAC 0x21 /* EGA in Color Mode */
  57. #define VIDEO_TYPE_VGAC 0x22 /* VGA+ in Color Mode */
  58. #define VIDEO_TYPE_VLFB 0x23 /* VESA VGA in graphic mode */
  59. #define VIDEO_TYPE_PICA_S3 0x30 /* ACER PICA-61 local S3 video */
  60. #define VIDEO_TYPE_MIPS_G364 0x31 /* MIPS Magnum 4000 G364 video */
  61. #define VIDEO_TYPE_SGI 0x33 /* Various SGI graphics hardware */
  62. #define VIDEO_TYPE_TGAC 0x40 /* DEC TGA */
  63. #define VIDEO_TYPE_SUN 0x50 /* Sun frame buffer. */
  64. #define VIDEO_TYPE_SUNPCI 0x51 /* Sun PCI based frame buffer. */
  65. #define VIDEO_TYPE_PMAC 0x60 /* PowerMacintosh frame buffer. */
  66. #endif /* _SCREEN_INFO_H */