2 * This file is part of the coreboot project.
4 * Copyright (C) 2009 University of Heidelberg
5 * Written by Mondrian Nuessle <nuessle@uni-heidelberg.de> for Univ. Heidelberg
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 /* PILOT Super I/O is only based on LPC observation done on factory system. */
24 #include <arch/romcc_io.h>
27 /* Pilot uses 0x5A/0xA5 pattern to actiavte deactivate config access. */
28 static void pnp_enter_ext_func_mode(device_t dev)
34 static void pnp_exit_ext_func_mode(device_t dev)
40 /* Serial config is a fairly standard procedure. */
41 static void pilot_enable_serial(device_t dev, u16 iobase)
43 pnp_enter_ext_func_mode(dev);
44 pnp_set_logical_device(dev);
45 pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
46 pnp_set_enable(dev, 1);
47 pnp_exit_ext_func_mode(dev);
50 static void pilot_disable_serial(device_t dev)
52 pnp_enter_ext_func_mode(dev);
53 pnp_set_logical_device(dev);
54 pnp_set_iobase(dev, PNP_IDX_IO0, 0x0000);
55 pnp_set_enable(dev, 0);
56 pnp_exit_ext_func_mode(dev);