diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/smbus/tco.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/smbus/tco.c b/src/soc/intel/common/block/smbus/tco.c index 8cde3bf7f2..518541b1ab 100644 --- a/src/soc/intel/common/block/smbus/tco.c +++ b/src/soc/intel/common/block/smbus/tco.c @@ -24,6 +24,7 @@ #define TCOBASE 0x50 #define TCOCTL 0x54 #define TCO_BASE_EN (1 << 8) +#define TCO_BASE_LOCK (1 << 0) /* Get base address of TCO I/O registers. */ static uint16_t tco_get_bar(void) @@ -52,6 +53,10 @@ void tco_write_reg(uint16_t tco_reg, uint16_t value) void tco_lockdown(void) { uint16_t tcocnt; + const pci_devfn_t dev = PCH_DEV_SMBUS; + + /* TCO base address lockdown */ + pci_or_config32(dev, TCOCTL, TCO_BASE_LOCK); /* TCO Lock down */ tcocnt = tco_read_reg(TCO1_CNT); |