src/mainboard/google/volteer/mainboard.c

/* SPDX-License-Identifier: GPL-2.0-or-later */

#include <console/console.h>
#include <acpi/acpi.h>
#include <baseboard/variants.h>
#include <device/device.h>
#include <drivers/spi/tpm/tpm.h>
#include <ec/ec.h>
#include <fw_config.h>
#include <security/tpm/tss.h>
#include <soc/gpio.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <variant/gpio.h>
#include <vb2_api.h>

#include "drivers/intel/pmc_mux/conn/chip.h"

extern struct chip_operations drivers_intel_pmc_mux_conn_ops;

static bool is_port1(struct device *dev)
{
	return dev->path.type == DEVICE_PATH_GENERIC &&	dev->path.generic.id == 1 &&
		dev->chip_ops == &drivers_intel_pmc_mux_conn_ops;
}

static void typec_orientation_fixup(void)
{
	/*
	 * TODO: This is an ugly hack, see if there's a better way to accomplish this same thing
	 * via fw_config + devicetree, i.e., change a register's value depending on fw_config
	 * probing.
	 */
	const struct device *pmc;
	const struct device *mux;
	const struct device *conn;

	pmc = pcidev_path_on_root(PCH_DEVFN_PMC);
	if (!pmc || !pmc->link_list->children) {
		printk(BIOS_ERR, "%s: unable to find PMC device or its mux\n", __func__);
		return;
	}

	/*
	 * Find port 1 underneath PMC.MUX; some variants may not have this defined, so it's okay
	 * to just silently return here.
	 */
	mux = pmc->link_list->children;
	conn = dev_find_matching_device_on_bus(mux->link_list, is_port1);
	if (!conn)
		return;

	if (fw_config_probe(FW_CONFIG(DB_USB, USB4_GEN2)) ||
	    fw_config_probe(FW_CONFIG(DB_USB, USB3_ACTIVE)) ||
	    fw_config_probe(FW_CONFIG(DB_USB, USB4_GEN3)) ||
	    fw_config_probe(FW_CONFIG(DB_USB, USB3_NO_A))) {
		struct drivers_intel_pmc_mux_conn_config *config = conn->chip_info;

		if (config) {
			printk(BIOS_INFO, "Configure Right Type-C port orientation for retimer\n");
			config->sbu_orientation = TYPEC_ORIENTATION_NORMAL;
		}
	}
}

static void mainboard_init(struct device *dev)
{
	mainboard_ec_init();
	typec_orientation_fixup();
}

static void add_fw_config_oem_string(const struct fw_config *config, void *arg)
{
	struct smbios_type11 *t;
	char buffer[64];

	t = (struct smbios_type11 *)arg;

	snprintf(buffer, sizeof(buffer), "%s-%s", config->field_name, config->option_name);
	t->count = smbios_add_string(t->eos, buffer);
}

static void mainboard_smbios_strings(struct device *dev, struct smbios_type11 *t)
{
	fw_config_for_each_found(add_fw_config_oem_string, t);
}

static void mainboard_enable(struct device *dev)
{
	dev->ops->init = mainboard_init;
	dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
	dev->ops->get_smbios_strings = mainboard_smbios_strings;
}

void mainboard_update_soc_chip_config(struct soc_intel_tigerlake_config *cfg)
{
	int ret;
	if (!CONFIG(MAINBOARD_HAS_SPI_TPM_CR50)) {
		/*
		 * Negotiation of long interrupt pulses is only supported via SPI.  I2C is only
		 * used on reworked prototypes on which the TPM is replaced with Dauntless under
		 * development, it will use long pulses by default, or use the interrupt line in
		 * a different way altogether.
		 */
		return;
	}

	ret = tlcl_lib_init();
	if (ret != VB2_SUCCESS) {
		printk(BIOS_ERR, "tlcl_lib_init() failed: 0x%x\n", ret);
		return;
	}

	if (cr50_is_long_interrupt_pulse_enabled()) {
		printk(BIOS_INFO, "Enabling S0i3.4\n");
	} else {
		/*
		 * Disable S0i3.4, preventing the GPIO block from switching to
		 * slow clock.
		 */
		printk(BIOS_INFO, "Not enabling S0i3.4\n");
		cfg->LpmStateDisableMask |= LPM_S0i3_4;
		cfg->gpio_override_pm = 1;
		memset(cfg->gpio_pm, 0, sizeof(cfg->gpio_pm));
	}
}

static void mainboard_chip_init(void *chip_info)
{
	const struct pad_config *base_pads;
	const struct pad_config *override_pads;
	size_t base_num, override_num;

	base_pads = variant_base_gpio_table(&base_num);
	override_pads = variant_override_gpio_table(&override_num);

	gpio_configure_pads_with_override(base_pads, base_num, override_pads, override_num);
}

void mainboard_silicon_init_params(FSP_S_CONFIG *params)
{
	bool has_usb4;

	/* If device doesn't have USB4 hardware, disable tbt */
	has_usb4 = (fw_config_probe(FW_CONFIG(DB_USB, USB4_GEN2))
		    || fw_config_probe(FW_CONFIG(DB_USB, USB4_GEN3)));

	if (!has_usb4)
		memset(params->ITbtPcieRootPortEn, 0,
		       ARRAY_SIZE(params->ITbtPcieRootPortEn)
			       * sizeof(*params->ITbtPcieRootPortEn));
}

struct chip_operations mainboard_ops = {
	.init = mainboard_chip_init,
	.enable_dev = mainboard_enable,
};