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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2019 Intel Corp.
*
* 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.
*/
/*
* 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>
#define CAMERA1_CLK 0x8000 /* Camera 1 Clock */
#define CAMERA2_CLK 0x8080 /* Camera 2 Clock */
#define CAM_CLK_EN (1 << 1)
#define MIPI_CLK (1 << 0)
#define HDPLL_CLK (0 << 0)
static void pch_enable_isclk(void)
{
pcr_or32(PID_ISCLK, CAMERA1_CLK, CAM_CLK_EN | MIPI_CLK);
pcr_or32(PID_ISCLK, CAMERA2_CLK, CAM_CLK_EN | MIPI_CLK);
}
static void pch_handle_sideband(config_t *config)
{
if (config->pch_isclk)
pch_enable_isclk();
}
static void pch_finalize(void)
{
uint32_t reg32;
uint8_t *pmcbase;
config_t *config;
uint8_t reg8;
/* TCO Lock down */
tco_lockdown();
/*
* Set low maximum temp threshold value used for dynamic thermal sensor
* shutdown consideration.
*
* If Dynamic Thermal Shutdown is enabled then PMC logic shuts down the
* thermal sensor when CPU is in a C-state and DTS Temp <= LTT.
*/
pch_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);
}
pch_handle_sideband(config);
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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