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-rw-r--r--src/mainboard/bachmann/ot200/mainboard.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mainboard/bachmann/ot200/mainboard.c b/src/mainboard/bachmann/ot200/mainboard.c
index ac6855ac00..0ea053aad0 100644
--- a/src/mainboard/bachmann/ot200/mainboard.c
+++ b/src/mainboard/bachmann/ot200/mainboard.c
@@ -21,6 +21,7 @@
#include <device/smbus.h>
#include <smbios.h>
#include <console/console.h>
+#include <cpu/x86/msr.h>
/* overwrite a weak function to fill SMBIOS table with a custom value */
static u8 hw_rev = 0;
@@ -43,6 +44,7 @@ static void init(struct device *dev)
unsigned int i;
u32 chksum = 0;
char block[20];
+ msr_t reset;
device_t eeprom_dev = dev_find_slot_on_smbus(1, 0x52);
if (eeprom_dev == 0) {
@@ -63,6 +65,12 @@ static void init(struct device *dev)
hw_rev = block[5];
printk(BIOS_DEBUG, "hw revision: %u\n", hw_rev);
+
+ /* Reset MFGPT7 (standby power domain) - this is done via
+ * an undocumented register */
+ reset = rdmsr(0x5140002b);
+ reset.lo |= 1 << 7;
+ wrmsr(0x5140002b, reset);
}
static void mainboard_enable(struct device *dev)