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 */ 79