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 u32 oem_string_ptr; 39 u32 capabilities; 40 u32 modes_ptr; 41 u16 total_memory; 42 u16 oem_version; 43 u32 vendor_name_ptr; 44 u32 product_name_ptr; 45 u32 product_rev_ptr; 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 103 #define VESA_GET_CUR_MODE 0x4f03 104 105 struct graphic_device; 106 int vbe_get_video_info(struct graphic_device *gdev); 107 108 #endif 109