diff options
Diffstat (limited to 'src/soc/intel/apollolake')
| -rw-r--r-- | src/soc/intel/apollolake/bootblock/bootblock.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/bootblock/bootblock.c b/src/soc/intel/apollolake/bootblock/bootblock.c index b8d6f22e7a..68ce7ab640 100644 --- a/src/soc/intel/apollolake/bootblock/bootblock.c +++ b/src/soc/intel/apollolake/bootblock/bootblock.c @@ -60,6 +60,12 @@ void asmlinkage bootblock_c_entry(uint32_t tsc_hi, uint32_t tsc_lo) /* Set PCI Express BAR */ pci_io_write_config32(dev, PCIEXBAR, CONFIG_MMCONF_BASE_ADDRESS | 1); + /* + * Clear TSEG register - TSEG register comes out of reset with a + * non-zero default value. Clear this register to ensure that there are + * no surprises in CBMEM handling. + */ + pci_write_config32(dev, TSEG, 0); dev = P2SB_DEV; /* BAR and MMIO enable for IOSF, so that GPIOs can be configured */ |