2 * This file is part of the coreboot project.
4 * Copyright (C) 2003 Linux Networx
5 * (Written by Eric Biederman <ebiederman@lnxi.com> for 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; version 2 of the License.
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
23 #include <arch/romcc_io.h>
24 #include <device/pci_ids.h>
26 /* Enable 5MB ROM access at 0xFFB00000 - 0xFFFFFFFF. */
27 static void amd8111_enable_rom(void)
32 dev = pci_io_locate_device(PCI_ID(PCI_VENDOR_ID_AMD,
33 PCI_DEVICE_ID_AMD_8111_ISA), 0);
35 /* Note: The 0xFFFF0000 - 0xFFFFFFFF range is always enabled. */
37 /* Set the 5MB enable bits. */
38 byte = pci_io_read_config8(dev, 0x43);
39 byte |= (1 << 7); /* Enable 0xFFC00000-0xFFFFFFFF (4MB). */
40 byte |= (1 << 6); /* Enable 0xFFB00000-0xFFBFFFFF (1MB). */
41 pci_io_write_config8(dev, 0x43, byte);