src/include/vbe.h

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