2 * This file is part of the coreboot project.
4 * (C) 2008-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; version 2 of
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 #define RTC_FAILED (1 <<2)
24 #define GEN_PMCON_3 0xa4
26 static void check_cmos_failed(void)
29 byte = pci_read_config8(PCI_DEV(0, 0x1f, 0), GEN_PMCON_3);
30 if (byte & RTC_FAILED) {
31 // clear bit 1 and bit 2
32 byte = cmos_read(RTC_BOOT_BYTE);
34 byte |= CONFIG_MAX_REBOOT_CNT << 4;
35 cmos_write(byte, RTC_BOOT_BYTE);