diff options
| -rw-r--r-- | src/soc/intel/xeon_sp/bootblock.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/soc/intel/xeon_sp/bootblock.c b/src/soc/intel/xeon_sp/bootblock.c index 453c383897..8e236f2942 100644 --- a/src/soc/intel/xeon_sp/bootblock.c +++ b/src/soc/intel/xeon_sp/bootblock.c @@ -21,6 +21,7 @@ #include <console/console.h> #include <cpu/x86/mtrr.h> #include <intelblocks/lpc_lib.h> +#include <soc/pci_devs.h> const FSPT_UPD temp_ram_init_params = { .FspUpdHeader = { @@ -54,6 +55,11 @@ void bootblock_soc_early_init(void) { fast_spi_early_init(SPI_BASE_ADDRESS); pch_enable_lpc(); + + /* Set up P2SB BAR. This is needed for PCR to work */ + uint8_t p2sb_cmd = pci_mmio_read_config8(PCH_DEV_P2SB, PCI_COMMAND); + pci_mmio_write_config8(PCH_DEV_P2SB, PCI_COMMAND, p2sb_cmd | PCI_COMMAND_MEMORY); + pci_mmio_write_config32(PCH_DEV_P2SB, PCI_BASE_ADDRESS_0, CONFIG_PCR_BASE_ADDRESS); } void bootblock_soc_init(void) |