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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file is created based on Intel Tiger Lake Processor PCH Datasheet
* Document number: 575857
* Chapter number: 4, 29
*/
#include <bootstate.h>
#include <commonlib/console/post_codes.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <device/mmio.h>
#include <device/pci.h>
#include <intelblocks/lpc_lib.h>
#include <intelblocks/pcr.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/systemagent.h>
#include <intelblocks/tco.h>
#include <intelblocks/thermal.h>
#include <intelpch/lockdown.h>
#include <soc/p2sb.h>
#include <soc/pci_devs.h>
#include <soc/pcr_ids.h>
#include <soc/pm.h>
#include <soc/smbus.h>
#include <soc/soc_chip.h>
#include <soc/systemagent.h>
#include <spi-generic.h>
static void pch_finalize(void)
{
config_t *config;
/* TCO Lock down */
tco_lockdown();
/* TODO: Add Thermal Configuration */
/*
* Disable ACPI PM timer based on dt policy
*
* Disabling ACPI PM timer is necessary for XTAL OSC shutdown.
* Disabling ACPI PM timer also switches off TCO
*
* SA_DEV_ROOT device is used here instead of PCH_DEV_PMC since it is
* just required to get to chip config. PCH_DEV_PMC is hidden by this
* point and hence removed from the root bus. pcidev_path_on_root thus
* returns NULL for PCH_DEV_PMC device.
*/
config = config_of_soc();
if (config->PmTimerDisabled)
pmc_disable_acpi_timer();
pmc_clear_pmcon_sts();
}
static void tbt_finalize(void)
{
int i;
const struct device *dev;
/* Disable Thunderbolt PCIe root ports bus master */
for (i = 0; i < NUM_TBT_FUNCTIONS; i++) {
dev = pcidev_path_on_root(SA_DEVFN_TBT(i));
if (dev)
pci_dev_disable_bus_master(dev);
}
}
static void sa_finalize(void)
{
if (get_lockdown_config() == CHIPSET_LOCKDOWN_COREBOOT)
sa_lock_pam();
}
static void soc_finalize(void *unused)
{
printk(BIOS_DEBUG, "Finalizing chipset.\n");
pch_finalize();
apm_control(APM_CNT_FINALIZE);
tbt_finalize();
sa_finalize();
/* Indicate finalize step with post code */
post_code(POST_OS_BOOT);
}
BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, soc_finalize, NULL);
BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, soc_finalize, NULL);
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