path: root/include/vbe.h (plain)
blob: d4056914c4eb106b431be60828b311846c4aded6

1	/******************************************************************************
2	* Copyright (c) 2004, 2008 IBM Corporation
3	* Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
4	* All rights reserved.
5	*
6	* SPDX-License-Identifier: BSD-2-Clause
7	*
8	* Contributors:
9	* IBM Corporation - initial implementation
10	*****************************************************************************/
11	#ifndef _VBE_H
12	#define _VBE_H
13
14	/* these structs are for input from and output to OF */
15	struct __packed screen_info {
16	u8 display_type; /* 0=NONE, 1= analog, 2=digital */
17	u16 screen_width;
18	u16 screen_height;
19	/* bytes per line in framebuffer, may be more than screen_width */
20	u16 screen_linebytes;
21	u8 color_depth; /* color depth in bits per pixel */
22	u32 framebuffer_address;
23	u8 edid_block_zero[128];
24	};
25
26	struct __packed screen_info_input {
27	u8 signature[4];
28	u16 size_reserved;
29	u8 monitor_number;
30	u16 max_screen_width;
31	u8 color_depth;
32	};
33
34	/* these structs only store the required a subset of the VBE-defined fields */
35	struct __packed vbe_info {
36	char signature[4];
37	u16 version;
38	u8 *oem_string_ptr;
39	u32 capabilities;
40	u16 video_mode_list[256];
41	u16 total_memory;
42	};
43
44	struct __packed vesa_mode_info {
45	u16 mode_attributes; /* 00 */
46	u8 win_a_attributes; /* 02 */
47	u8 win_b_attributes; /* 03 */
48	u16 win_granularity; /* 04 */
49	u16 win_size; /* 06 */
50	u16 win_a_segment; /* 08 */
51	u16 win_b_segment; /* 0a */
52	u32 win_func_ptr; /* 0c */
53	u16 bytes_per_scanline; /* 10 */
54	u16 x_resolution; /* 12 */
55	u16 y_resolution; /* 14 */
56	u8 x_charsize; /* 16 */
57	u8 y_charsize; /* 17 */
58	u8 number_of_planes; /* 18 */
59	u8 bits_per_pixel; /* 19 */
60	u8 number_of_banks; /* 20 */
61	u8 memory_model; /* 21 */
62	u8 bank_size; /* 22 */
63	u8 number_of_image_pages; /* 23 */
64	u8 reserved_page;
65	u8 red_mask_size;
66	u8 red_mask_pos;
67	u8 green_mask_size;
68	u8 green_mask_pos;
69	u8 blue_mask_size;
70	u8 blue_mask_pos;
71	u8 reserved_mask_size;
72	u8 reserved_mask_pos;
73	u8 direct_color_mode_info;
74	u32 phys_base_ptr;
75	u32 offscreen_mem_offset;
76	u16 offscreen_mem_size;
77	u8 reserved[206];
78	};
79
80	struct vbe_mode_info {
81	u16 video_mode;
82	bool valid;
83	union {
84	struct vesa_mode_info vesa;
85	u8 mode_info_block[256];
86	};
87	};
88
89	struct vbe_ddc_info {
90	u8 port_number; /* i.e. monitor number */
91	u8 edid_transfer_time;
92	u8 ddc_level;
93	u8 edid_block_zero[128];
94	};
95
96	#define VESA_GET_INFO 0x4f00
97	#define VESA_GET_MODE_INFO 0x4f01
98	#define VESA_SET_MODE 0x4f02
99
100	struct graphic_device;
101	int vbe_get_video_info(struct graphic_device *gdev);
102
103	#endif
104