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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; | |
222f25f8 | 38 | u32 oem_string_ptr; |
647f56e7 | 39 | u32 capabilities; |
222f25f8 | 40 | u32 modes_ptr; |
647f56e7 | 41 | u16 total_memory; |
222f25f8 SG |
42 | u16 oem_version; |
43 | u32 vendor_name_ptr; | |
44 | u32 product_name_ptr; | |
45 | u32 product_rev_ptr; | |
647f56e7 SG |
46 | }; |
47 | ||
48 | struct __packed vesa_mode_info { | |
49 | u16 mode_attributes; /* 00 */ | |
50 | u8 win_a_attributes; /* 02 */ | |
51 | u8 win_b_attributes; /* 03 */ | |
52 | u16 win_granularity; /* 04 */ | |
53 | u16 win_size; /* 06 */ | |
54 | u16 win_a_segment; /* 08 */ | |
55 | u16 win_b_segment; /* 0a */ | |
56 | u32 win_func_ptr; /* 0c */ | |
57 | u16 bytes_per_scanline; /* 10 */ | |
58 | u16 x_resolution; /* 12 */ | |
59 | u16 y_resolution; /* 14 */ | |
60 | u8 x_charsize; /* 16 */ | |
61 | u8 y_charsize; /* 17 */ | |
62 | u8 number_of_planes; /* 18 */ | |
63 | u8 bits_per_pixel; /* 19 */ | |
64 | u8 number_of_banks; /* 20 */ | |
65 | u8 memory_model; /* 21 */ | |
66 | u8 bank_size; /* 22 */ | |
67 | u8 number_of_image_pages; /* 23 */ | |
68 | u8 reserved_page; | |
69 | u8 red_mask_size; | |
70 | u8 red_mask_pos; | |
71 | u8 green_mask_size; | |
72 | u8 green_mask_pos; | |
73 | u8 blue_mask_size; | |
74 | u8 blue_mask_pos; | |
75 | u8 reserved_mask_size; | |
76 | u8 reserved_mask_pos; | |
77 | u8 direct_color_mode_info; | |
78 | u32 phys_base_ptr; | |
79 | u32 offscreen_mem_offset; | |
80 | u16 offscreen_mem_size; | |
81 | u8 reserved[206]; | |
82 | }; | |
83 | ||
84 | struct vbe_mode_info { | |
85 | u16 video_mode; | |
86 | bool valid; | |
87 | union { | |
88 | struct vesa_mode_info vesa; | |
89 | u8 mode_info_block[256]; | |
90 | }; | |
91 | }; | |
92 | ||
93 | struct vbe_ddc_info { | |
94 | u8 port_number; /* i.e. monitor number */ | |
95 | u8 edid_transfer_time; | |
96 | u8 ddc_level; | |
97 | u8 edid_block_zero[128]; | |
98 | }; | |
99 | ||
100 | #define VESA_GET_INFO 0x4f00 | |
101 | #define VESA_GET_MODE_INFO 0x4f01 | |
102 | #define VESA_SET_MODE 0x4f02 | |
222f25f8 | 103 | #define VESA_GET_CUR_MODE 0x4f03 |
647f56e7 SG |
104 | |
105 | struct graphic_device; | |
106 | int vbe_get_video_info(struct graphic_device *gdev); | |
107 | ||
108 | #endif |