diff options
Diffstat (limited to 'src/southbridge/intel/i82801cx/cmos_failover.c')
-rw-r--r-- | src/southbridge/intel/i82801cx/cmos_failover.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801cx/cmos_failover.c b/src/southbridge/intel/i82801cx/cmos_failover.c new file mode 100644 index 000000000000..ab1816fbd872 --- /dev/null +++ b/src/southbridge/intel/i82801cx/cmos_failover.c @@ -0,0 +1,19 @@ +//kind of cmos_err for ich3 + +#include "i82801cx.h" + +static void check_cmos_failed(void) +{ +#if CONFIG_HAVE_OPTION_TABLE + uint8_t byte = pci_read_config8(PCI_DEV(0,0x1f,0),GEN_PMCON_3); + + if( byte & RTC_BATTERY_DEAD) { + // Set boot_option and last_boot to 'Fallback', + // clear reboot_bits + byte = cmos_read(RTC_BOOT_BYTE); + byte &= 0x0c; + byte |= CONFIG_MAX_REBOOT_CNT << 4; + cmos_write(byte, RTC_BOOT_BYTE); + } +#endif +} |