2 * This file is part of the coreboot project.
4 * Copyright (C) 2000 AG Electronics Ltd.
5 * Copyright (C) 2003-2004 Linux Networx
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 #include <arch/romcc_io.h>
25 static void pc87427_disable_dev(device_t dev)
27 pnp_set_logical_device(dev);
28 pnp_set_enable(dev, 0);
31 static void pc87427_enable_dev(device_t dev, u16 iobase)
33 pnp_set_logical_device(dev);
34 pnp_set_enable(dev, 0);
35 pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
36 pnp_set_enable(dev, 1);
39 static void xbus_cfg(device_t dev)
44 pnp_set_logical_device(dev);
46 /* Select proper BIOS size (4MB). */
47 pnp_write_config(dev, PC87427_XMEMCNF2,
48 (pnp_read_config(dev, PC87427_XMEMCNF2)) | 0x04);
49 xbus_index = pnp_read_iobase(dev, 0x60);
51 /* Enable writes to devices attached to XCS0 (XBUS Chip Select 0). */
52 for (i = 0; i <= 0xf; i++)
53 outb((i << 4), xbus_index + PC87427_HAP0);