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/* -*- pse-c -*-
*-----------------------------------------------------------------------------
* Filename: igd_vga.h
* $Revision: 1.3 $
*-----------------------------------------------------------------------------
* Copyright © 2002-2010, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*-----------------------------------------------------------------------------
* Description:
* Header file for common VGA registers and macros.
*-----------------------------------------------------------------------------
*/
#ifndef _IGD_VGA_H
#define _IGD_VGA_H
#ifdef CONFIG_MICRO
#define VB_CODE_SEG __based( __segname("_CODE"))
#else
#define VB_CODE_SEG
#endif
/* The Maximum VGA Mode Number as specified in the IGD Mode Table. */
#define VGA_MODE_NUM_MAX 0x1C
typedef struct vga_mode_data {
unsigned char cols;
unsigned char rows; /* #rows-1 */
unsigned char char_height;
unsigned short video_buff_size;
unsigned char sr_regs[4];
unsigned char misc_reg;
unsigned char crtc_regs[25];
unsigned char ar_regs[20];
unsigned char gr_regs[9];
} vga_mode_data_t;
/* This contains the VGA Mode Table. A ptr to this exists in the
* Environment. */
extern vga_mode_data_t VB_CODE_SEG vga_mode_data[];
/* This contains a pointer to the VGA Mode_Table. This is necessary, so
* vga_mode.c can use this to program the mode, incase the user has
* changed the Environment Table. */
extern vga_mode_data_t FAR (*vga_mode_data_ptr)[];
#endif
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