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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 <arch/io.h>
#include <device/mmio.h>
#include <bootstate.h>
#include <console/console.h>
#include <console/post_codes.h>
#include <cpu/x86/smm.h>
#include <device/pci.h>
#include <intelblocks/lpc_lib.h>
#include <intelblocks/pcr.h>
#include <intelblocks/tco.h>
#include <intelblocks/thermal.h>
#include <reg_script.h>
#include <spi-generic.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>
static void pch_finalize(void)
{
uint32_t reg32;
uint8_t *pmcbase;
config_t *config;
uint8_t reg8;
/* 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();
pmcbase = pmc_mmio_regs();
if (config->PmTimerDisabled) {
reg8 = read8(pmcbase + PCH_PWRM_ACPI_TMR_CTL);
reg8 |= (1 << 1);
write8(pmcbase + PCH_PWRM_ACPI_TMR_CTL, reg8);
}
/* Disable XTAL shutdown qualification for low power idle. */
if (config->s0ix_enable) {
reg32 = read32(pmcbase + CPPMVRIC);
reg32 |= XTALSDQDIS;
write32(pmcbase + CPPMVRIC, reg32);
}
pmc_clear_pmcon_sts();
}
static void soc_finalize(void *unused)
{
printk(BIOS_DEBUG, "Finalizing chipset.\n");
pch_finalize();
printk(BIOS_DEBUG, "Finalizing SMM.\n");
outb(APM_CNT_FINALIZE, APM_CNT);
/* 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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