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/* ----------------------------------------------------------------------- *
*
* Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
* Boston MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
#ifndef BOOT_VESA_H
#define BOOT_VESA_H
typedef struct {
u16 off, seg;
} far_ptr;
/* VESA General Information table */
struct vesa_general_info {
u32 signature; /* 0 Magic number = "VESA" */
u16 version; /* 4 */
far_ptr vendor_string; /* 6 */
u32 capabilities; /* 10 */
far_ptr video_mode_ptr; /* 14 */
u16 total_memory; /* 18 */
u16 oem_software_rev; /* 20 */
far_ptr oem_vendor_name_ptr; /* 22 */
far_ptr oem_product_name_ptr; /* 26 */
far_ptr oem_product_rev_ptr; /* 30 */
u8 reserved[222]; /* 34 */
u8 oem_data[256]; /* 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 {
u16 mode_attr; /* 0 */
u8 win_attr[2]; /* 2 */
u16 win_grain; /* 4 */
u16 win_size; /* 6 */
u16 win_seg[2]; /* 8 */
far_ptr win_scheme; /* 12 */
u16 logical_scan; /* 16 */
u16 h_res; /* 18 */
u16 v_res; /* 20 */
u8 char_width; /* 22 */
u8 char_height; /* 23 */
u8 memory_planes; /* 24 */
u8 bpp; /* 25 */
u8 banks; /* 26 */
u8 memory_layout; /* 27 */
u8 bank_size; /* 28 */
u8 image_planes; /* 29 */
u8 page_function; /* 30 */
u8 rmask; /* 31 */
u8 rpos; /* 32 */
u8 gmask; /* 33 */
u8 gpos; /* 34 */
u8 bmask; /* 35 */
u8 bpos; /* 36 */
u8 resv_mask; /* 37 */
u8 resv_pos; /* 38 */
u8 dcm_info; /* 39 */
u32 lfb_ptr; /* 40 Linear frame buffer address */
u32 offscreen_ptr; /* 44 Offscreen memory address */
u16 offscreen_size; /* 48 */
u8 reserved[206]; /* 50 */
} __attribute__ ((packed));
#endif /* LIB_SYS_VESA_H */
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