Martin Roth | 239b5df | 2022-07-26 22:18:26 -0600 | [diff] [blame] | 1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
| 2 | |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 3 | /****************************************************************************** |
| 4 | * Copyright (c) 2004, 2008 IBM Corporation |
| 5 | * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> |
| 6 | * All rights reserved. |
| 7 | * This program and the accompanying materials |
| 8 | * are made available under the terms of the BSD License |
| 9 | * which accompanies this distribution, and is available at |
| 10 | * http://www.opensource.org/licenses/bsd-license.php |
| 11 | * |
| 12 | * Contributors: |
| 13 | * IBM Corporation - initial implementation |
| 14 | *****************************************************************************/ |
Ronald G. Minnich | b2893a01 | 2013-04-23 10:59:11 -0700 | [diff] [blame] | 15 | #ifndef VBE_H |
| 16 | #define VBE_H |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 17 | |
Elyes HAOUAS | 0edf6a5 | 2019-10-26 18:41:47 +0200 | [diff] [blame] | 18 | #include <stdint.h> |
| 19 | |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 20 | // these structs are for input from and output to OF |
| 21 | typedef struct { |
Elyes HAOUAS | a0fed37 | 2016-09-16 20:17:40 +0200 | [diff] [blame] | 22 | u8 display_type; // 0 = NONE, 1 = analog, 2 = digital |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 23 | u16 screen_width; |
| 24 | u16 screen_height; |
Lee Leahy | 6a566d7 | 2017-03-07 17:45:12 -0800 | [diff] [blame] | 25 | u16 screen_linebytes; // bytes per line in framebuffer, may be more |
| 26 | // than screen_width |
Ronald G. Minnich | 9518b56 | 2013-09-19 16:45:22 -0700 | [diff] [blame] | 27 | u8 color_depth; // color depth in bits per pixel |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 28 | u32 framebuffer_address; |
| 29 | u8 edid_block_zero[128]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 30 | } __packed screen_info_t; |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 31 | |
| 32 | typedef struct { |
| 33 | u8 signature[4]; |
| 34 | u16 size_reserved; |
| 35 | u8 monitor_number; |
| 36 | u16 max_screen_width; |
| 37 | u8 color_depth; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 38 | } __packed screen_info_input_t; |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 39 | |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 40 | typedef struct { |
| 41 | u16 mode_attributes; // 00 |
| 42 | u8 win_a_attributes; // 02 |
| 43 | u8 win_b_attributes; // 03 |
| 44 | u16 win_granularity; // 04 |
| 45 | u16 win_size; // 06 |
| 46 | u16 win_a_segment; // 08 |
| 47 | u16 win_b_segment; // 0a |
| 48 | u32 win_func_ptr; // 0c |
| 49 | u16 bytes_per_scanline; // 10 |
| 50 | u16 x_resolution; // 12 |
| 51 | u16 y_resolution; // 14 |
| 52 | u8 x_charsize; // 16 |
| 53 | u8 y_charsize; // 17 |
| 54 | u8 number_of_planes; // 18 |
| 55 | u8 bits_per_pixel; // 19 |
| 56 | u8 number_of_banks; // 20 |
| 57 | u8 memory_model; // 21 |
| 58 | u8 bank_size; // 22 |
| 59 | u8 number_of_image_pages; // 23 |
| 60 | u8 reserved_page; |
| 61 | u8 red_mask_size; |
| 62 | u8 red_mask_pos; |
| 63 | u8 green_mask_size; |
| 64 | u8 green_mask_pos; |
| 65 | u8 blue_mask_size; |
| 66 | u8 blue_mask_pos; |
| 67 | u8 reserved_mask_size; |
| 68 | u8 reserved_mask_pos; |
| 69 | u8 direct_color_mode_info; |
| 70 | u32 phys_base_ptr; |
| 71 | u32 offscreen_mem_offset; |
| 72 | u16 offscreen_mem_size; |
| 73 | u8 reserved[206]; |
Stefan Reinauer | 6a00113 | 2017-07-13 02:20:27 +0200 | [diff] [blame] | 74 | } __packed vesa_mode_info_t; |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 75 | |
| 76 | typedef struct { |
| 77 | u16 video_mode; |
| 78 | union { |
| 79 | vesa_mode_info_t vesa; |
| 80 | u8 mode_info_block[256]; |
| 81 | }; |
| 82 | // our crap |
| 83 | //u16 attributes; |
| 84 | //u16 linebytes; |
| 85 | //u16 x_resolution; |
| 86 | //u16 y_resolution; |
| 87 | //u8 x_charsize; |
| 88 | //u8 y_charsize; |
| 89 | //u8 bits_per_pixel; |
| 90 | //u8 memory_model; |
| 91 | //u32 framebuffer_address; |
| 92 | } vbe_mode_info_t; |
| 93 | |
| 94 | typedef struct { |
| 95 | u8 port_number; // i.e. monitor number |
| 96 | u8 edid_transfer_time; |
| 97 | u8 ddc_level; |
| 98 | u8 edid_block_zero[128]; |
| 99 | } vbe_ddc_info_t; |
| 100 | |
Stefan Reinauer | c1efb90 | 2011-10-12 14:30:59 -0700 | [diff] [blame] | 101 | #define VESA_GET_INFO 0x4f00 |
| 102 | #define VESA_GET_MODE_INFO 0x4f01 |
| 103 | #define VESA_SET_MODE 0x4f02 |
Stefan Reinauer | 216fa46 | 2011-10-12 14:25:07 -0700 | [diff] [blame] | 104 | |
Ronald G. Minnich | b2893a01 | 2013-04-23 10:59:11 -0700 | [diff] [blame] | 105 | void vbe_set_graphics(void); |
| 106 | void vbe_textmode_console(void); |
| 107 | |
Johanna Schander | db7a3ae | 2019-07-24 10:14:26 +0200 | [diff] [blame] | 108 | /** |
| 109 | * Returns the mode_info struct from the vbe context, |
| 110 | * if initialized. NULL on invalid mode_infos. |
| 111 | */ |
| 112 | const vbe_mode_info_t *vbe_mode_info(void); |
| 113 | |
Ronald G. Minnich | b2893a01 | 2013-04-23 10:59:11 -0700 | [diff] [blame] | 114 | #endif // VBE_H |