diff options
| author | Michael Niewöhner <foss@mniewoehner.de> | 2019-09-22 13:27:20 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-04-21 09:18:30 +0000 |
| commit | 3c20cba28930ff86eb65074fc8cb577873901592 (patch) | |
| tree | 67bde77adf0d3de6ea19edc3e5adbf7fed53ef7c /src/soc/intel/common/block | |
| parent | b48e6357e823dd6b01c9a0c9122079489ce8f190 (diff) | |
soc/intel/common/smbus: lock TCO base address on PCH finalize
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: Idab9419487e6e4cbdecd2efaa4772ff4960c9055
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35525
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Diffstat (limited to 'src/soc/intel/common/block')
| -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); |