1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* ----------------------------------------------------------------------- *
4 * Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
6 * ----------------------------------------------------------------------- */
15 /* VESA General Information table */
16 struct vesa_general_info {
17 u32 signature; /* 0 Magic number = "VESA" */
19 far_ptr vendor_string; /* 6 */
20 u32 capabilities; /* 10 */
21 far_ptr video_mode_ptr; /* 14 */
22 u16 total_memory; /* 18 */
24 u8 reserved[236]; /* 20 */
25 } __attribute__ ((packed));
27 #define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
29 struct vesa_mode_info {
30 u16 mode_attr; /* 0 */
31 u8 win_attr[2]; /* 2 */
32 u16 win_grain; /* 4 */
34 u16 win_seg[2]; /* 8 */
35 far_ptr win_scheme; /* 12 */
36 u16 logical_scan; /* 16 */
40 u8 char_width; /* 22 */
41 u8 char_height; /* 23 */
42 u8 memory_planes; /* 24 */
45 u8 memory_layout; /* 27 */
46 u8 bank_size; /* 28 */
47 u8 image_planes; /* 29 */
48 u8 page_function; /* 30 */
56 u8 resv_mask; /* 37 */
60 u32 lfb_ptr; /* 40 Linear frame buffer address */
61 u32 offscreen_ptr; /* 44 Offscreen memory address */
62 u16 offscreen_size; /* 48 */
64 u8 reserved[206]; /* 50 */
65 } __attribute__ ((packed));
67 #endif /* LIB_SYS_VESA_H */