Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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 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
49extern 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 */