diff options
Diffstat (limited to 'src/soc/intel/common/pch')
| -rw-r--r-- | src/soc/intel/common/pch/lockdown/lockdown.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/intel/common/pch/lockdown/lockdown.c b/src/soc/intel/common/pch/lockdown/lockdown.c index 8032b4ac3e..cd8b402b5d 100644 --- a/src/soc/intel/common/pch/lockdown/lockdown.c +++ b/src/soc/intel/common/pch/lockdown/lockdown.c @@ -3,6 +3,7 @@ #include <bootstate.h> #include <intelblocks/cfg.h> #include <intelblocks/fast_spi.h> +#include <intelblocks/lpc_lib.h> #include <intelblocks/pcr.h> #include <intelpch/lockdown.h> #include <intelblocks/gpmr.h> @@ -88,6 +89,24 @@ static void fast_spi_lockdown_cfg(int chipset_lockdown) } } +static void lpc_lockdown_config(int chipset_lockdown) +{ + /* Set BIOS Interface Lock, BIOS Lock */ + if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) { + /* BIOS Interface Lock */ + lpc_set_bios_interface_lock_down(); + + /* Only allow writes in SMM */ + if (CONFIG(BOOTMEDIA_SMM_BWP)) { + lpc_set_eiss(); + lpc_enable_wp(); + } + + /* BIOS Lock */ + lpc_set_lock_enable(); + } +} + /* * platform_lockdown_config has 2 major part. * 1. Common SoC lockdown configuration. @@ -102,6 +121,9 @@ static void platform_lockdown_config(void *unused) /* SPI lock down configuration */ fast_spi_lockdown_cfg(chipset_lockdown); + /* LPC/eSPI lock down configuration */ + lpc_lockdown_config(chipset_lockdown); + /* DMI lock down configuration */ lockdown_cfg(); |