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/******************************************************************************
* 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 <boot/coreboot_tables.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 bpp
u32 framebuffer_address;
u8 edid_block_zero[128];
} __attribute__ ((__packed__)) screen_info_t;
typedef struct {
u8 signature[4];
u16 size_reserved;
u8 monitor_number;
u16 max_screen_width;
u8 color_depth;
} __attribute__ ((__packed__)) screen_info_input_t;
// these structs only store a subset of the VBE defined fields
// only those needed.
typedef struct {
char signature[4];
u16 version;
u8 *oem_string_ptr;
u32 capabilities;
u16 video_mode_list[256]; // lets hope we never have more than 256 video modes...
u16 total_memory;
} vbe_info_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];
} __attribute__ ((__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
int vbe_mode_info_valid(void);
void fill_lb_framebuffer(struct lb_framebuffer *framebuffer);
void vbe_set_graphics(void);
void vbe_textmode_console(void);
#endif // VBE_H
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