| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/mmio.h> |
| #include <device/pci.h> |
| #include <intelblocks/cfg.h> |
| #include <intelblocks/pmclib.h> |
| #include <intelpch/lockdown.h> |
| #include <soc/pci_devs.h> |
| #include <soc/pm.h> |
| |
| static void pmc_lockdown_config(int chipset_lockdown) |
| { |
| 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); |
| |
| /* Make sure payload/OS can't trigger global reset */ |
| pmc_global_reset_disable_and_lock(); |
| |
| /* Lock PMC stretch policy */ |
| pci_or_config32(PCH_DEV_PMC, GEN_PMCON_B, SLP_STR_POL_LOCK); |
| } |
| |
| static void sata_lockdown_config(int chipset_lockdown) |
| { |
| if (chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) { |
| pci_or_config32(PCH_DEV_SATA, SATAGC, SATAGC_REGLOCK); |
| pci_or_config32(PCH_DEV_SSATA, SATAGC, SATAGC_REGLOCK); |
| } |
| } |
| |
| void soc_lockdown_config(int chipset_lockdown) |
| { |
| pmc_lockdown_config(chipset_lockdown); |
| sata_lockdown_config(chipset_lockdown); |
| } |