2 * This file is part of the coreboot project.
4 * Copyright (C) 2004 Tyan Computer
5 * Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
6 * Copyright (C) 2006,2007 AMD
7 * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
8 * Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS)
9 * Written by Morgan Tsai <my_tsai@sis.com> for SiS.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #if CONFIG_HT_CHAIN_END_UNITID_BASE < CONFIG_HT_CHAIN_UNITID_BASE
27 #define SIS966_DEVN_BASE CONFIG_HT_CHAIN_END_UNITID_BASE
29 #define SIS966_DEVN_BASE CONFIG_HT_CHAIN_UNITID_BASE
32 static void sis966_enable_rom(void)
36 /* Enable 4MB rom access at 0xFFC00000 - 0xFFFFFFFF */
37 addr = pci_locate_device(PCI_ID(0x1039, 0x0966), 0);
39 /* Set the 4MB enable bit bit */
40 pci_write_config8(addr, 0x40, pci_read_config8(addr, 0x40) | 0x11);