diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/bachmann/ot200/mainboard.c | 8 |
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) |