src/soc/intel/broadwell/finalize.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2014 Google Inc.
 *
 * 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 <console/console.h>
#include <console/post_codes.h>
#include <cpu/x86/smm.h>
#include <reg_script.h>
#include <spi-generic.h>
#include <stdlib.h>
#include <soc/pci_devs.h>
#include <soc/lpc.h>
#include <soc/me.h>
#include <soc/rcba.h>
#include <soc/spi.h>
#include <soc/systemagent.h>

const struct reg_script system_agent_finalize_script[] = {
	REG_PCI_OR16(0x50, 1 << 0),				/* GGC */
	REG_PCI_OR32(0x5c, 1 << 0),				/* DPR */
	REG_PCI_OR32(0x78, 1 << 10),				/* ME */
	REG_PCI_OR32(0x90, 1 << 0),				/* REMAPBASE */
	REG_PCI_OR32(0x98, 1 << 0),				/* REMAPLIMIT */
	REG_PCI_OR32(0xa0, 1 << 0),				/* TOM */
	REG_PCI_OR32(0xa8, 1 << 0),				/* TOUUD */
	REG_PCI_OR32(0xb0, 1 << 0),				/* BDSM */
	REG_PCI_OR32(0xb4, 1 << 0),				/* BGSM */
	REG_PCI_OR32(0xb8, 1 << 0),				/* TSEGMB */
	REG_PCI_OR32(0xbc, 1 << 0),				/* TOLUD */
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x5500, 1 << 0),	/* PAVP */
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x5f00, 1 << 31),	/* SA PM */
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x6020, 1 << 0),	/* UMA GFX */
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x63fc, 1 << 0),	/* VTDTRK */
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x6800, 1 << 31),
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x7000, 1 << 31),
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x77fc, 1 << 0),
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x50fc, 0x8f),
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x7ffc, 1 << 0),
	REG_MMIO_OR32(MCH_BASE_ADDRESS + 0x5880, 1 << 5),
	REG_MMIO_WRITE8(MCH_BASE_ADDRESS + 0x50fc, 0x8f),	/* MC */

	REG_SCRIPT_END
};

const struct reg_script pch_finalize_script[] = {
#if !IS_ENABLED(CONFIG_SPI_CONSOLE)
	/* Set SPI opcode menu */
	REG_MMIO_WRITE16(RCBA_BASE_ADDRESS + SPIBAR_OFFSET + SPIBAR_PREOP,
			 SPI_OPPREFIX),
	REG_MMIO_WRITE16(RCBA_BASE_ADDRESS + SPIBAR_OFFSET + SPIBAR_OPTYPE,
			 SPI_OPTYPE),
	REG_MMIO_WRITE32(RCBA_BASE_ADDRESS + SPIBAR_OFFSET +
			 SPIBAR_OPMENU_LOWER, SPI_OPMENU_LOWER),
	REG_MMIO_WRITE32(RCBA_BASE_ADDRESS + SPIBAR_OFFSET +
			 SPIBAR_OPMENU_UPPER, SPI_OPMENU_UPPER),

	/* Lock SPIBAR */
	REG_MMIO_OR32(RCBA_BASE_ADDRESS + SPIBAR_OFFSET + SPIBAR_HSFS,
		      SPIBAR_HSFS_FLOCKDN),
#endif

	/* TC Lockdown */
	REG_MMIO_OR32(RCBA_BASE_ADDRESS + 0x0050, (1 << 31)),

	/* BIOS Interface Lockdown */
	REG_MMIO_OR32(RCBA_BASE_ADDRESS + GCS, (1 << 0)),

	/* Function Disable SUS Well Lockdown */
	REG_MMIO_OR8(RCBA_BASE_ADDRESS + FDSW, (1 << 7)),

	/* Global SMI Lock */
	REG_PCI_OR16(GEN_PMCON_1, SMI_LOCK),

	/* GEN_PMCON Lock */
	REG_PCI_OR8(GEN_PMCON_LOCK, SLP_STR_POL_LOCK | ACPI_BASE_LOCK),

	/* PMSYNC */
	REG_MMIO_OR32(RCBA_BASE_ADDRESS + PMSYNC_CONFIG, (1 << 31)),


	REG_SCRIPT_END
};

static void broadwell_finalize(void *unused)
{
	printk(BIOS_DEBUG, "Finalizing chipset.\n");

	reg_script_run_on_dev(SA_DEV_ROOT, system_agent_finalize_script);
	reg_script_run_on_dev(PCH_DEV_LPC, pch_finalize_script);

	/* Lock */
	RCBA32_OR(0x3a6c, 0x00000001);

	/* Read+Write the following registers */
	MCHBAR32(0x6030) = MCHBAR32(0x6030);
	MCHBAR32(0x6034) = MCHBAR32(0x6034);
	MCHBAR32(0x6008) = MCHBAR32(0x6008);
	RCBA32(0x21a4) = RCBA32(0x21a4);

	/* Re-init SPI after lockdown */
	spi_init();

	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, broadwell_finalize, NULL);
BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, broadwell_finalize, NULL);