2018-10-17 08:25:01 +02:00
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2018 Intel Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/io.h>
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2019-03-03 07:01:05 +01:00
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#include <device/mmio.h>
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2018-10-17 08:25:01 +02:00
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#include <bootstate.h>
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#include <console/console.h>
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#include <console/post_codes.h>
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#include <cpu/x86/smm.h>
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#include <device/pci.h>
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#include <intelblocks/lpc_lib.h>
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#include <intelblocks/pcr.h>
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2018-05-17 15:10:32 +02:00
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#include <intelblocks/tco.h>
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2018-10-17 08:25:01 +02:00
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#include <reg_script.h>
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#include <spi-generic.h>
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#include <soc/p2sb.h>
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#include <soc/pci_devs.h>
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#include <soc/pcr_ids.h>
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#include <soc/pm.h>
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#include <soc/smbus.h>
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2019-07-05 12:30:38 +02:00
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#include <soc/soc_chip.h>
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2018-10-17 08:25:01 +02:00
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#include <soc/systemagent.h>
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#include <stdlib.h>
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#define CAMERA1_CLK 0x8000 /* Camera 1 Clock */
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#define CAMERA2_CLK 0x8080 /* Camera 2 Clock */
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#define CAM_CLK_EN (1 << 1)
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#define MIPI_CLK (1 << 0)
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#define HDPLL_CLK (0 << 0)
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static void pch_enable_isclk(void)
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{
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pcr_or32(PID_ISCLK, CAMERA1_CLK, CAM_CLK_EN | MIPI_CLK);
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pcr_or32(PID_ISCLK, CAMERA2_CLK, CAM_CLK_EN | MIPI_CLK);
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}
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static void pch_handle_sideband(config_t *config)
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{
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if (config->pch_isclk)
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pch_enable_isclk();
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}
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static void pch_finalize(void)
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{
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uint32_t reg32;
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uint8_t *pmcbase;
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config_t *config;
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uint8_t reg8;
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/* TCO Lock down */
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2018-05-17 15:10:32 +02:00
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tco_lockdown();
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2018-10-17 08:25:01 +02:00
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/*
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* Disable ACPI PM timer based on dt policy
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*
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* Disabling ACPI PM timer is necessary for XTAL OSC shutdown.
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* Disabling ACPI PM timer also switches off TCO
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2019-07-07 07:58:31 +02:00
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*
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* SA_DEV_ROOT device is used here instead of PCH_DEV_PMC since it is
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* just required to get to chip config. PCH_DEV_PMC is hidden by this
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* point and hence removed from the root bus. pcidev_path_on_root thus
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* returns NULL for PCH_DEV_PMC device.
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2018-10-17 08:25:01 +02:00
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*/
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2019-07-13 08:44:43 +02:00
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config = config_of_path(SA_DEVFN_ROOT);
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2018-10-17 08:25:01 +02:00
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pmcbase = pmc_mmio_regs();
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if (config->PmTimerDisabled) {
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reg8 = read8(pmcbase + PCH_PWRM_ACPI_TMR_CTL);
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reg8 |= (1 << 1);
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write8(pmcbase + PCH_PWRM_ACPI_TMR_CTL, reg8);
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}
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/* Disable XTAL shutdown qualification for low power idle. */
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if (config->s0ix_enable) {
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reg32 = read32(pmcbase + CPPMVRIC);
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reg32 |= XTALSDQDIS;
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write32(pmcbase + CPPMVRIC, reg32);
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}
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pch_handle_sideband(config);
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2019-04-29 09:07:27 +02:00
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pmc_clear_pmcon_sts();
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2018-10-17 08:25:01 +02:00
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}
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static void soc_finalize(void *unused)
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{
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printk(BIOS_DEBUG, "Finalizing chipset.\n");
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pch_finalize();
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printk(BIOS_DEBUG, "Finalizing SMM.\n");
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outb(APM_CNT_FINALIZE, APM_CNT);
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/* Indicate finalize step with post code */
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post_code(POST_OS_BOOT);
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}
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BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, soc_finalize, NULL);
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BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, soc_finalize, NULL);
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