new intel io hub.

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1634 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 16 insertions, 0 deletions

diff --git a/src/southbridge/intel/i82801dbm/cmos_failover.c b/src/southbridge/intel/i82801dbm/cmos_failover.c
new file mode 100644
index 0000000000..9702313f9c
--- /dev/null
+++ b/src/southbridge/intel/i82801dbm/cmos_failover.c
@@ -0,0 +1,16 @@
+//kind of cmos_err for ich5
+#define RTC_FAILED    (1 <<2)
+#define GEN_PMCON_3     0xa4
+static void check_cmos_failed(void) 
+{
+
+                uint8_t byte;
+                byte = pci_read_config8(PCI_DEV(0,0x1f,0),GEN_PMCON_3);
+                if( byte & RTC_FAILED){
+//clear bit 1 and bit 2
+                        byte = cmos_read(RTC_BOOT_BYTE);
+                        byte &= 0x0c;
+                        byte |= MAX_REBOOT_CNT << 4;
+                        cmos_write(byte, RTC_BOOT_BYTE);
+                }
+}