xref: /openbmc/u-boot/include/vbe.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: BSD-2-Clause */
2 /******************************************************************************
3  * Copyright (c) 2004, 2008 IBM Corporation
4  * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
5  * All rights reserved.
6  *
7  * Contributors:
8  *     IBM Corporation - initial implementation
9  *****************************************************************************/
10 #ifndef _VBE_H
11 #define _VBE_H
12 
13 /* these structs are for input from and output to OF */
14 struct __packed vbe_screen_info {
15 	u8 display_type;	/* 0=NONE, 1= analog, 2=digital */
16 	u16 screen_width;
17 	u16 screen_height;
18 	/* bytes per line in framebuffer, may be more than screen_width */
19 	u16 screen_linebytes;
20 	u8 color_depth;	/* color depth in bits per pixel */
21 	u32 framebuffer_address;
22 	u8 edid_block_zero[128];
23 };
24 
25 struct __packed vbe_screen_info_input {
26 	u8 signature[4];
27 	u16 size_reserved;
28 	u8 monitor_number;
29 	u16 max_screen_width;
30 	u8 color_depth;
31 };
32 
33 /* these structs only store the required a subset of the VBE-defined fields */
34 struct __packed vbe_info {
35 	char signature[4];
36 	u16 version;
37 	u32 oem_string_ptr;
38 	u32 capabilities;
39 	u32 modes_ptr;
40 	u16 total_memory;
41 	u16 oem_version;
42 	u32 vendor_name_ptr;
43 	u32 product_name_ptr;
44 	u32 product_rev_ptr;
45 };
46 
47 struct __packed vesa_mode_info {
48 	u16 mode_attributes;	/* 00 */
49 	u8 win_a_attributes;	/* 02 */
50 	u8 win_b_attributes;	/* 03 */
51 	u16 win_granularity;	/* 04 */
52 	u16 win_size;		/* 06 */
53 	u16 win_a_segment;	/* 08 */
54 	u16 win_b_segment;	/* 0a */
55 	u32 win_func_ptr;	/* 0c */
56 	u16 bytes_per_scanline;	/* 10 */
57 	u16 x_resolution;	/* 12 */
58 	u16 y_resolution;	/* 14 */
59 	u8 x_charsize;		/* 16 */
60 	u8 y_charsize;		/* 17 */
61 	u8 number_of_planes;	/* 18 */
62 	u8 bits_per_pixel;	/* 19 */
63 	u8 number_of_banks;	/* 20 */
64 	u8 memory_model;	/* 21 */
65 	u8 bank_size;		/* 22 */
66 	u8 number_of_image_pages; /* 23 */
67 	u8 reserved_page;
68 	u8 red_mask_size;
69 	u8 red_mask_pos;
70 	u8 green_mask_size;
71 	u8 green_mask_pos;
72 	u8 blue_mask_size;
73 	u8 blue_mask_pos;
74 	u8 reserved_mask_size;
75 	u8 reserved_mask_pos;
76 	u8 direct_color_mode_info;
77 	u32 phys_base_ptr;
78 	u32 offscreen_mem_offset;
79 	u16 offscreen_mem_size;
80 	u8 reserved[206];
81 };
82 
83 struct vbe_mode_info {
84 	u16 video_mode;
85 	bool valid;
86 	union {
87 		struct vesa_mode_info vesa;
88 		u8 mode_info_block[256];
89 	};
90 };
91 
92 struct vbe_ddc_info {
93 	u8 port_number;	/* i.e. monitor number */
94 	u8 edid_transfer_time;
95 	u8 ddc_level;
96 	u8 edid_block_zero[128];
97 };
98 
99 #define VESA_GET_INFO		0x4f00
100 #define VESA_GET_MODE_INFO	0x4f01
101 #define VESA_SET_MODE		0x4f02
102 #define VESA_GET_CUR_MODE	0x4f03
103 
104 extern struct vbe_mode_info mode_info;
105 
106 struct video_priv;
107 struct video_uc_platdata;
108 int vbe_setup_video_priv(struct vesa_mode_info *vesa,
109 			 struct video_priv *uc_priv,
110 			 struct video_uc_platdata *plat);
111 int vbe_setup_video(struct udevice *dev, int (*int15_handler)(void));
112 
113 #endif
114