80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1999-2007 H. Peter Anvin - All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
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* Boston MA 02111-1307, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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#ifndef BOOT_VESA_H
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#define BOOT_VESA_H
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typedef struct {
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u16 off, seg;
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} far_ptr;
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/* VESA General Information table */
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struct vesa_general_info {
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u32 signature; /* 0 Magic number = "VESA" */
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u16 version; /* 4 */
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far_ptr vendor_string; /* 6 */
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u32 capabilities; /* 10 */
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far_ptr video_mode_ptr; /* 14 */
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u16 total_memory; /* 18 */
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u16 oem_software_rev; /* 20 */
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far_ptr oem_vendor_name_ptr; /* 22 */
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far_ptr oem_product_name_ptr; /* 26 */
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far_ptr oem_product_rev_ptr; /* 30 */
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u8 reserved[222]; /* 34 */
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u8 oem_data[256]; /* 256 */
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} __attribute__ ((packed));
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#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24))
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#define VBE2_MAGIC ('V' + ('B' << 8) + ('E' << 16) + ('2' << 24))
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struct vesa_mode_info {
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u16 mode_attr; /* 0 */
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u8 win_attr[2]; /* 2 */
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u16 win_grain; /* 4 */
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u16 win_size; /* 6 */
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u16 win_seg[2]; /* 8 */
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far_ptr win_scheme; /* 12 */
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u16 logical_scan; /* 16 */
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u16 h_res; /* 18 */
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u16 v_res; /* 20 */
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u8 char_width; /* 22 */
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u8 char_height; /* 23 */
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u8 memory_planes; /* 24 */
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u8 bpp; /* 25 */
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u8 banks; /* 26 */
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u8 memory_layout; /* 27 */
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u8 bank_size; /* 28 */
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u8 image_planes; /* 29 */
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u8 page_function; /* 30 */
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u8 rmask; /* 31 */
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u8 rpos; /* 32 */
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u8 gmask; /* 33 */
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u8 gpos; /* 34 */
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u8 bmask; /* 35 */
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u8 bpos; /* 36 */
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u8 resv_mask; /* 37 */
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u8 resv_pos; /* 38 */
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u8 dcm_info; /* 39 */
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u32 lfb_ptr; /* 40 Linear frame buffer address */
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u32 offscreen_ptr; /* 44 Offscreen memory address */
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u16 offscreen_size; /* 48 */
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u8 reserved[206]; /* 50 */
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} __attribute__ ((packed));
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#endif /* LIB_SYS_VESA_H */
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