diff options
Diffstat (limited to 'src/soc/intel/skylake/lockdown.c')
| -rw-r--r-- | src/soc/intel/skylake/lockdown.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/lockdown.c b/src/soc/intel/skylake/lockdown.c index ac138c20b3..f2a9e8b19f 100644 --- a/src/soc/intel/skylake/lockdown.c +++ b/src/soc/intel/skylake/lockdown.c @@ -18,6 +18,7 @@ #include <chip.h> #include <soc/lpc.h> #include <soc/pci_devs.h> +#include <soc/pm.h> #include <string.h> static void lpc_lockdown_config(void) @@ -42,10 +43,25 @@ static void lpc_lockdown_config(void) pci_read_config8(dev, BIOS_CNTL); } +static void pmc_lockdown_config(void) +{ + uint8_t *pmcbase; + u32 pmsyncreg; + + /* PMSYNC */ + pmcbase = pmc_mmio_regs(); + pmsyncreg = read32(pmcbase + PMSYNC_TPR_CFG); + pmsyncreg |= PMSYNC_LOCK; + write32(pmcbase + PMSYNC_TPR_CFG, pmsyncreg); +} + static void platform_lockdown_config(void *unused) { /* LPC lock down configuration */ lpc_lockdown_config(); + + /* PMC lock down configuration */ + pmc_lockdown_config(); } BOOT_STATE_INIT_ENTRY(BS_DEV_RESOURCES, BS_ON_EXIT, platform_lockdown_config, |