1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* ----------------------------------------------------------------------- *
3 *
4 *   Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
5 *
6 * ----------------------------------------------------------------------- */
7
8#ifndef BOOT_VESA_H
9#define BOOT_VESA_H
10
11typedef struct {
12	u16 off, seg;
13} far_ptr;
14
15/* VESA General Information table */
16struct vesa_general_info {
17	u32 signature;		/* 0 Magic number = "VESA" */
18	u16 version;		/* 4 */
19	far_ptr vendor_string;	/* 6 */
20	u32 capabilities;	/* 10 */
21	far_ptr video_mode_ptr;	/* 14 */
22	u16 total_memory;	/* 18 */
23
24	u8 reserved[236];	/* 20 */
25} __attribute__ ((packed));
26
27#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
28
29struct vesa_mode_info {
30	u16 mode_attr;		/* 0 */
31	u8 win_attr[2];		/* 2 */
32	u16 win_grain;		/* 4 */
33	u16 win_size;		/* 6 */
34	u16 win_seg[2];		/* 8 */
35	far_ptr win_scheme;	/* 12 */
36	u16 logical_scan;	/* 16 */
37
38	u16 h_res;		/* 18 */
39	u16 v_res;		/* 20 */
40	u8 char_width;		/* 22 */
41	u8 char_height;		/* 23 */
42	u8 memory_planes;	/* 24 */
43	u8 bpp;			/* 25 */
44	u8 banks;		/* 26 */
45	u8 memory_layout;	/* 27 */
46	u8 bank_size;		/* 28 */
47	u8 image_planes;	/* 29 */
48	u8 page_function;	/* 30 */
49
50	u8 rmask;		/* 31 */
51	u8 rpos;		/* 32 */
52	u8 gmask;		/* 33 */
53	u8 gpos;		/* 34 */
54	u8 bmask;		/* 35 */
55	u8 bpos;		/* 36 */
56	u8 resv_mask;		/* 37 */
57	u8 resv_pos;		/* 38 */
58	u8 dcm_info;		/* 39 */
59
60	u32 lfb_ptr;		/* 40 Linear frame buffer address */
61	u32 offscreen_ptr;	/* 44 Offscreen memory address */
62	u16 offscreen_size;	/* 48 */
63
64	u8 reserved[206];	/* 50 */
65} __attribute__ ((packed));
66
67#endif				/* LIB_SYS_VESA_H */
68