src/soc/amd/stoneyridge/southbridge.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2010 Advanced Micro Devices, 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 <console/console.h>

#include <arch/io.h>
#include <arch/acpi.h>
#include <bootstate.h>
#include <cpu/x86/smm.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <cbmem.h>
#include <amd_pci_util.h>
#include <soc/southbridge.h>
#include <soc/smi.h>
#include <fchec.h>


int acpi_get_sleep_type(void)
{
	return acpi_sleep_from_pm1(inw(pm_acpi_pm_cnt_blk()));
}

void sb_enable(device_t dev)
{
	printk(BIOS_DEBUG, "%s\n", __func__);
}

static void sb_init_acpi_ports(void)
{
	u32 reg;

	/* We use some of these ports in SMM regardless of whether or not
	 * ACPI tables are generated. Enable these ports indiscriminately.
	 */

	pm_write16(PM_EVT_BLK, ACPI_PM_EVT_BLK);
	pm_write16(PM1_CNT_BLK, ACPI_PM1_CNT_BLK);
	pm_write16(PM_TMR_BLK, ACPI_PM_TMR_BLK);
	pm_write16(PM_GPE0_BLK, ACPI_GPE0_BLK);
	/* CpuControl is in \_PR.CP00, 6 bytes */
	pm_write16(PM_CPU_CTRL, ACPI_CPU_CONTROL);

	if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) {
		/* APMC - SMI Command Port */
		pm_write16(PM_ACPI_SMI_CMD, APM_CNT);
		configure_smi(SMITYPE_SMI_CMD_PORT, SMI_MODE_SMI);

		/* SMI on SlpTyp requires sending SMI before completion
		 * response of the I/O write.  The BKDG also specifies
		 * clearing ForceStpClkRetry for SMI trapping.
		 */
		reg = pm_read32(PM_PCI_CTRL);
		reg |= FORCE_SLPSTATE_RETRY;
		reg &= ~FORCE_STPCLK_RETRY;
		pm_write32(PM_PCI_CTRL, reg);

		/* Disable SlpTyp feature */
		reg = pm_read8(PM_RST_CTRL1);
		reg &= ~SLPTYPE_CONTROL_EN;
		pm_write8(PM_RST_CTRL1, reg);

		configure_smi(SMITYPE_SLP_TYP, SMI_MODE_SMI);
	} else {
		pm_write16(PM_ACPI_SMI_CMD, 0);
	}

	/* Decode ACPI registers and enable standard features */
	pm_write8(PM_ACPI_CONF, PM_ACPI_DECODE_STD |
				PM_ACPI_GLOBAL_EN |
				PM_ACPI_RTC_EN_EN |
				PM_ACPI_TIMER_EN_EN);
}

void southbridge_init(void *chip_info)
{
	sb_init_acpi_ports();
}

void southbridge_final(void *chip_info)
{
	if (IS_ENABLED(CONFIG_STONEYRIDGE_IMC_FWM)) {
		agesawrapper_fchecfancontrolservice();
		if (!IS_ENABLED(CONFIG_ACPI_ENABLE_THERMAL_ZONE))
			enable_imc_thermal_zone();
	}
}

/*
 * Update the PCI devices with a valid IRQ number
 * that is set in the mainboard PCI_IRQ structures.
 */
static void set_pci_irqs(void *unused)
{
	/* Write PCI_INTR regs 0xC00/0xC01 */
	write_pci_int_table();

	/* Write IRQs for all devicetree enabled devices */
	write_pci_cfg_irqs();
}

/*
 * Hook this function into the PCI state machine
 * on entry into BS_DEV_ENABLE.
 */
BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, set_pci_irqs, NULL);