src/soc/intel/tigerlake/chip.c

/*
 * 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.
 */

#include <device/device.h>
#include <device/pci.h>
#include <fsp/api.h>
#include <fsp/util.h>
#include <intelblocks/acpi.h>
#include <intelblocks/cfg.h>
#include <intelblocks/itss.h>
#include <intelblocks/xdci.h>
#include <romstage_handoff.h>
#include <soc/intel/common/vbt.h>
#include <soc/itss.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
#include <soc/soc_chip.h>

#if CONFIG(HAVE_ACPI_TABLES)
const char *soc_acpi_name(const struct device *dev)
{
	if (dev->path.type == DEVICE_PATH_DOMAIN)
		return "PCI0";

	if (dev->path.type == DEVICE_PATH_USB) {
		switch (dev->path.usb.port_type) {
		case 0:
			/* Root Hub */
			return "RHUB";
		case 2:
			/* USB2 ports */
			switch (dev->path.usb.port_id) {
			case 0: return "HS01";
			case 1: return "HS02";
			case 2: return "HS03";
			case 3: return "HS04";
			case 4: return "HS05";
			case 5: return "HS06";
			case 6: return "HS07";
			case 7: return "HS08";
			case 8: return "HS09";
			case 9: return "HS10";
			}
			break;
		case 3:
			/* USB3 ports */
			switch (dev->path.usb.port_id) {
			case 0: return "SS01";
			case 1: return "SS02";
			case 2: return "SS03";
			case 3: return "SS04";
			}
			break;
		}
		return NULL;
	}
	if (dev->path.type != DEVICE_PATH_PCI)
		return NULL;

	switch (dev->path.pci.devfn) {
	case SA_DEVFN_ROOT:	return "MCHC";
	case PCH_DEVFN_XHCI:	return "XHCI";
	case PCH_DEVFN_I2C0:	return "I2C0";
	case PCH_DEVFN_I2C1:	return "I2C1";
	case PCH_DEVFN_I2C2:	return "I2C2";
	case PCH_DEVFN_I2C3:	return "I2C3";
	case PCH_DEVFN_I2C4:	return "I2C4";
	case PCH_DEVFN_I2C5:	return "I2C5";
	case PCH_DEVFN_SATA:	return "SATA";
	case PCH_DEVFN_PCIE1:	return "RP01";
	case PCH_DEVFN_PCIE2:	return "RP02";
	case PCH_DEVFN_PCIE3:	return "RP03";
	case PCH_DEVFN_PCIE4:	return "RP04";
	case PCH_DEVFN_PCIE5:	return "RP05";
	case PCH_DEVFN_PCIE6:	return "RP06";
	case PCH_DEVFN_PCIE7:	return "RP07";
	case PCH_DEVFN_PCIE8:	return "RP08";
	case PCH_DEVFN_PCIE9:	return "RP09";
	case PCH_DEVFN_PCIE10:	return "RP10";
	case PCH_DEVFN_PCIE11:	return "RP11";
	case PCH_DEVFN_PCIE12:	return "RP12";
	case PCH_DEVFN_UART0:	return "UAR0";
	case PCH_DEVFN_UART1:	return "UAR1";
	case PCH_DEVFN_UART2:	return "UAR2";
	case PCH_DEVFN_GSPI0:	return "SPI0";
	case PCH_DEVFN_GSPI1:	return "SPI1";
	case PCH_DEVFN_GSPI2:	return "SPI2";
	case PCH_DEVFN_GSPI3:   return "SPI3";
	/* Keeping ACPI device name coherent with ec.asl */
	case PCH_DEVFN_ESPI:	return "LPCB";
	case PCH_DEVFN_HDA:	return "HDAS";
	case PCH_DEVFN_SMBUS:	return "SBUS";
	case PCH_DEVFN_GBE:	return "GLAN";
	}

	return NULL;
}
#endif

/* SoC rotine to fill GPIO PM mask and value for GPIO_MISCCFG register */
static void soc_fill_gpio_pm_configuration(void)
{
	uint8_t value[TOTAL_GPIO_COMM];
	const config_t *config = config_of_soc();

	if (config->gpio_override_pm)
		memcpy(value, config->gpio_pm, sizeof(uint8_t) *
			TOTAL_GPIO_COMM);
	else
		memset(value, MISCCFG_ENABLE_GPIO_PM_CONFIG, sizeof(uint8_t) *
			TOTAL_GPIO_COMM);

	gpio_pm_configure(value, TOTAL_GPIO_COMM);
}

void soc_init_pre_device(void *chip_info)
{
	/* Snapshot the current GPIO IRQ polarities. FSP is setting a
	 * default policy that doesn't honor boards' requirements. */
	itss_snapshot_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END);

	/* Perform silicon specific init. */
	fsp_silicon_init(romstage_handoff_is_resume());

	 /* Display FIRMWARE_VERSION_INFO_HOB */
	fsp_display_fvi_version_hob();

	/* Restore GPIO IRQ polarities back to previous settings. */
	itss_restore_irq_polarities(GPIO_IRQ_START, GPIO_IRQ_END);

	soc_fill_gpio_pm_configuration();
}

static void pci_domain_set_resources(struct device *dev)
{
	assign_resources(dev->link_list);
}

static struct device_operations pci_domain_ops = {
	.read_resources   = &pci_domain_read_resources,
	.set_resources    = &pci_domain_set_resources,
	.scan_bus         = &pci_domain_scan_bus,
#if CONFIG(HAVE_ACPI_TABLES)
	.acpi_name        = &soc_acpi_name,
#endif
};

static struct device_operations cpu_bus_ops = {
	.read_resources   = DEVICE_NOOP,
	.set_resources    = DEVICE_NOOP,
	.enable_resources = DEVICE_NOOP,
	.init             = DEVICE_NOOP,
#if CONFIG(HAVE_ACPI_TABLES)
	.acpi_fill_ssdt_generator = generate_cpu_entries,
#endif
};

static void soc_enable(struct device *dev)
{
	/* Set the operations if it is a special bus type */
	if (dev->path.type == DEVICE_PATH_DOMAIN)
		dev->ops = &pci_domain_ops;
	else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER)
		dev->ops = &cpu_bus_ops;
}

struct chip_operations soc_intel_tigerlake_ops = {
	CHIP_NAME("Intel Tigerlake")
	.enable_dev	= &soc_enable,
	.init		= &soc_init_pre_device,
};