2 * This file is part of the coreboot project.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #define RTC_FAILED (1 <<2)
22 #define GEN_PMCON_3 0xa4
24 static void check_cmos_failed(void)
27 byte = pci_read_config8(PCI_DEV(0, 0x1f, 0), GEN_PMCON_3);
28 if (byte & RTC_FAILED) {
29 // clear bit 1 and bit 2
30 byte = cmos_read(RTC_BOOT_BYTE);
32 byte |= MAX_REBOOT_CNT << 4;
33 cmos_write(byte, RTC_BOOT_BYTE);