2 * This file is part of the coreboot project.
4 * Copyright (C) 2007 Luc Verhaegen <libv@skynet.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 * All IO necessary to poke VGA registers.
29 unsigned char vga_enable_read(void);
30 void vga_enable_write(unsigned char value);
31 void vga_enable_mask(unsigned char value, unsigned char mask);
33 /* Miscellaneous register */
34 unsigned char vga_misc_read(void);
35 void vga_misc_write(unsigned char value);
36 void vga_misc_mask(unsigned char value, unsigned char mask);
38 /* Sequencer registers. */
39 unsigned char vga_sr_read(unsigned char index);
40 void vga_sr_write(unsigned char index, unsigned char value);
41 void vga_sr_mask(unsigned char index, unsigned char value, unsigned char mask);
44 unsigned char vga_cr_read(unsigned char index);
45 void vga_cr_write(unsigned char index, unsigned char value);
46 void vga_cr_mask(unsigned char index, unsigned char value, unsigned char mask);
48 /* Attribute registers. */
49 unsigned char vga_ar_read(unsigned char index);
50 void vga_ar_write(unsigned char index, unsigned char value);
51 void vga_ar_mask(unsigned char index, unsigned char value, unsigned char mask);
53 /* Graphics registers. */
54 unsigned char vga_gr_read(unsigned char index);
55 void vga_gr_write(unsigned char index, unsigned char value);
56 void vga_gr_mask(unsigned char index, unsigned char value, unsigned char mask);
59 void vga_palette_enable(void);
60 void vga_palette_disable(void);
61 unsigned char vga_dac_mask_read(void);
62 void vga_dac_mask_write(unsigned char mask);
63 void vga_dac_read_address(unsigned char address);
64 void vga_dac_write_address(unsigned char address);
65 unsigned char vga_dac_data_read(void);
66 void vga_dac_data_write(unsigned char data);