101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* ----------------------------------------------------------------------- *
|
|
*
|
|
* Copyright 1999-2008 H. Peter Anvin - All Rights Reserved
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use,
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom
|
|
* the Software is furnished to do so, subject to the following
|
|
* conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall
|
|
* be included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* ----------------------------------------------------------------------- */
|
|
|
|
#ifndef LIB_SYS_VESA_H
|
|
#define LIB_SYS_VESA_H
|
|
|
|
#include <inttypes.h>
|
|
#include <com32.h>
|
|
|
|
/* VESA General Information table */
|
|
struct vesa_general_info {
|
|
uint32_t signature; /* Magic number = "VESA" */
|
|
uint16_t version;
|
|
far_ptr_t vendor_string;
|
|
uint8_t capabilities[4];
|
|
far_ptr_t video_mode_ptr;
|
|
uint16_t total_memory;
|
|
|
|
uint16_t oem_software_rev;
|
|
far_ptr_t oem_vendor_name_ptr;
|
|
far_ptr_t oem_product_name_ptr;
|
|
far_ptr_t oem_product_rev_ptr;
|
|
|
|
uint8_t reserved[222];
|
|
uint8_t oem_data[256];
|
|
} __attribute__ ((packed));
|
|
|
|
#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
|
|
#define VBE2_MAGIC ('V' + ('B' << 8) + ('E' << 16) + ('2' << 24))
|
|
|
|
struct vesa_mode_info {
|
|
uint16_t mode_attr;
|
|
uint8_t win_attr[2];
|
|
uint16_t win_grain;
|
|
uint16_t win_size;
|
|
uint16_t win_seg[2];
|
|
far_ptr_t win_scheme;
|
|
uint16_t logical_scan;
|
|
|
|
uint16_t h_res;
|
|
uint16_t v_res;
|
|
uint8_t char_width;
|
|
uint8_t char_height;
|
|
uint8_t memory_planes;
|
|
uint8_t bpp;
|
|
uint8_t banks;
|
|
uint8_t memory_layout;
|
|
uint8_t bank_size;
|
|
uint8_t image_pages;
|
|
uint8_t page_function;
|
|
|
|
uint8_t rmask;
|
|
uint8_t rpos;
|
|
uint8_t gmask;
|
|
uint8_t gpos;
|
|
uint8_t bmask;
|
|
uint8_t bpos;
|
|
uint8_t resv_mask;
|
|
uint8_t resv_pos;
|
|
uint8_t dcm_info;
|
|
|
|
uint8_t *lfb_ptr; /* Linear frame buffer address */
|
|
uint8_t *offscreen_ptr; /* Offscreen memory address */
|
|
uint16_t offscreen_size;
|
|
|
|
uint8_t reserved[206];
|
|
} __attribute__ ((packed));
|
|
|
|
struct vesa_info {
|
|
struct vesa_general_info gi;
|
|
struct vesa_mode_info mi;
|
|
};
|
|
|
|
extern struct vesa_info vesa_info;
|
|
|
|
#endif /* LIB_SYS_VESA_H */
|