diff options
Diffstat (limited to 'src/soc/intel/skylake')
| -rw-r--r-- | src/soc/intel/skylake/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/skylake/finalize.c | 13 | ||||
| -rw-r--r-- | src/soc/intel/skylake/lockdown.c | 52 |
3 files changed, 53 insertions, 13 deletions
diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc index baf6f01751..7046b8106c 100644 --- a/src/soc/intel/skylake/Makefile.inc +++ b/src/soc/intel/skylake/Makefile.inc @@ -53,6 +53,7 @@ ramstage-y += gspi.c ramstage-y += i2c.c ramstage-y += igd.c ramstage-y += irq.c +ramstage-y += lockdown.c ramstage-y += lpc.c ramstage-y += me.c ramstage-y += memmap.c diff --git a/src/soc/intel/skylake/finalize.c b/src/soc/intel/skylake/finalize.c index 404d217a87..a793e9551c 100644 --- a/src/soc/intel/skylake/finalize.c +++ b/src/soc/intel/skylake/finalize.c @@ -186,25 +186,12 @@ static void soc_lockdown(void) if (config->chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) { /* Bios Interface Lock */ - pci_write_config8(PCH_DEV_LPC, BIOS_CNTL, - pci_read_config8(PCH_DEV_LPC, - BIOS_CNTL) | LPC_BC_BILD); - /* Reads back for posted write to take effect */ - pci_read_config8(PCH_DEV_LPC, BIOS_CNTL); - fast_spi_set_bios_interface_lock_down(); /* GCS reg of DMI */ pcr_or8(PID_DMI, PCR_DMI_GCS, PCR_DMI_GCS_BILD); /* Bios Lock */ - pci_write_config8(PCH_DEV_LPC, BIOS_CNTL, - pci_read_config8(PCH_DEV_LPC, - BIOS_CNTL) | LPC_BC_LE); - - /* Ensure an additional read back after performing lock down */ - pci_read_config8(PCH_DEV_LPC, BIOS_CNTL); - fast_spi_set_lock_enable(); } } diff --git a/src/soc/intel/skylake/lockdown.c b/src/soc/intel/skylake/lockdown.c new file mode 100644 index 0000000000..ac138c20b3 --- /dev/null +++ b/src/soc/intel/skylake/lockdown.c @@ -0,0 +1,52 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/io.h> +#include <bootstate.h> +#include <chip.h> +#include <soc/lpc.h> +#include <soc/pci_devs.h> +#include <string.h> + +static void lpc_lockdown_config(void) +{ + static struct soc_intel_skylake_config *config; + struct device *dev; + uint8_t reg_mask = 0; + + dev = PCH_DEV_LPC; + /* Check if LPC is enabled, else return */ + if (dev == NULL || dev->chip_info == NULL) + return; + + config = dev->chip_info; + + /* Set Bios Interface Lock, Bios Lock */ + if (config->chipset_lockdown == CHIPSET_LOCKDOWN_COREBOOT) + reg_mask |= LPC_BC_BILD | LPC_BC_LE; + + pci_or_config8(dev, BIOS_CNTL, reg_mask); + /* Ensure an additional read back after performing lock down */ + pci_read_config8(dev, BIOS_CNTL); +} + +static void platform_lockdown_config(void *unused) +{ + /* LPC lock down configuration */ + lpc_lockdown_config(); +} + +BOOT_STATE_INIT_ENTRY(BS_DEV_RESOURCES, BS_ON_EXIT, platform_lockdown_config, + NULL); |