diff options
| -rw-r--r-- | src/soc/intel/xeon_sp/cpx/chip.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/soc/intel/xeon_sp/cpx/chip.c b/src/soc/intel/xeon_sp/cpx/chip.c index 592a316e06..a3076a8035 100644 --- a/src/soc/intel/xeon_sp/cpx/chip.c +++ b/src/soc/intel/xeon_sp/cpx/chip.c @@ -68,6 +68,18 @@ static void chip_final(void *data) { /* Lock SBI */ pci_or_config32(PCH_DEV_P2SB, P2SBC, SBILOCK); + + /* LOCK PAM */ + pci_or_config32(pcidev_path_on_root(PCI_DEVFN(0, 0)), 0x80, 1 << 0); + + /* + * LOCK SMRAM + * According to the CedarIsland FSP Integration Guide this needs to + * be done with legacy 0xCF8/0xCFC IO ops. + */ + uint8_t reg8 = pci_io_read_config8(PCI_DEV(0, 0, 0), 0x88); + pci_io_write_config8(PCI_DEV(0, 0, 0), 0x88, reg8 | (1 << 4)); + p2sb_hide(); set_bios_init_completion(); |