| /****************************************************************************** |
| * Copyright (c) 2004, 2008 IBM Corporation |
| * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net> |
| * All rights reserved. |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *****************************************************************************/ |
| #ifndef VBE_H |
| #define VBE_H |
| |
| #include <stdint.h> |
| |
| // these structs are for input from and output to OF |
| typedef struct { |
| u8 display_type; // 0 = NONE, 1 = analog, 2 = digital |
| u16 screen_width; |
| u16 screen_height; |
| u16 screen_linebytes; // bytes per line in framebuffer, may be more |
| // than screen_width |
| u8 color_depth; // color depth in bits per pixel |
| u32 framebuffer_address; |
| u8 edid_block_zero[128]; |
| } __packed screen_info_t; |
| |
| typedef struct { |
| u8 signature[4]; |
| u16 size_reserved; |
| u8 monitor_number; |
| u16 max_screen_width; |
| u8 color_depth; |
| } __packed screen_info_input_t; |
| |
| typedef struct { |
| u16 mode_attributes; // 00 |
| u8 win_a_attributes; // 02 |
| u8 win_b_attributes; // 03 |
| u16 win_granularity; // 04 |
| u16 win_size; // 06 |
| u16 win_a_segment; // 08 |
| u16 win_b_segment; // 0a |
| u32 win_func_ptr; // 0c |
| u16 bytes_per_scanline; // 10 |
| u16 x_resolution; // 12 |
| u16 y_resolution; // 14 |
| u8 x_charsize; // 16 |
| u8 y_charsize; // 17 |
| u8 number_of_planes; // 18 |
| u8 bits_per_pixel; // 19 |
| u8 number_of_banks; // 20 |
| u8 memory_model; // 21 |
| u8 bank_size; // 22 |
| u8 number_of_image_pages; // 23 |
| u8 reserved_page; |
| u8 red_mask_size; |
| u8 red_mask_pos; |
| u8 green_mask_size; |
| u8 green_mask_pos; |
| u8 blue_mask_size; |
| u8 blue_mask_pos; |
| u8 reserved_mask_size; |
| u8 reserved_mask_pos; |
| u8 direct_color_mode_info; |
| u32 phys_base_ptr; |
| u32 offscreen_mem_offset; |
| u16 offscreen_mem_size; |
| u8 reserved[206]; |
| } __packed vesa_mode_info_t; |
| |
| typedef struct { |
| u16 video_mode; |
| union { |
| vesa_mode_info_t vesa; |
| u8 mode_info_block[256]; |
| }; |
| // our crap |
| //u16 attributes; |
| //u16 linebytes; |
| //u16 x_resolution; |
| //u16 y_resolution; |
| //u8 x_charsize; |
| //u8 y_charsize; |
| //u8 bits_per_pixel; |
| //u8 memory_model; |
| //u32 framebuffer_address; |
| } vbe_mode_info_t; |
| |
| typedef struct { |
| u8 port_number; // i.e. monitor number |
| u8 edid_transfer_time; |
| u8 ddc_level; |
| u8 edid_block_zero[128]; |
| } vbe_ddc_info_t; |
| |
| #define VESA_GET_INFO 0x4f00 |
| #define VESA_GET_MODE_INFO 0x4f01 |
| #define VESA_SET_MODE 0x4f02 |
| |
| void vbe_set_graphics(void); |
| void vbe_textmode_console(void); |
| |
| /** |
| * Returns the mode_info struct from the vbe context, |
| * if initialized. NULL on invalid mode_infos. |
| */ |
| const vbe_mode_info_t *vbe_mode_info(void); |
| |
| #endif // VBE_H |