src/mainboard/google/myst/mainboard.c

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

#include <amdblocks/acpi.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/amd_pci_util.h>
#include <amdblocks/xhci.h>
#include <baseboard/variants.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <device/device.h>
#include <drivers/i2c/tpm/chip.h>
#include <variant/ec.h>

/* The IRQ mapping in fch_irq_map ends up getting written to the indirect address space that is
   accessed via I/O ports 0xc00/0xc01. */

/*
 * This controls the device -> IRQ routing.
 *
 * Hardcoded IRQs:
 *  0: timer < soc/amd/common/acpi/lpc.asl
 *  1: i8042 - Keyboard
 *  2: cascade
 *  8: rtc0 <- soc/amd/common/acpi/lpc.asl
 *  9: acpi <- soc/amd/common/acpi/lpc.asl
 */

static const struct fch_irq_routing fch_irq_map[] = {
	{ PIRQ_A,	12,		PIRQ_NC },
	{ PIRQ_B,	14,		PIRQ_NC },
	{ PIRQ_C,	15,		PIRQ_NC },
	{ PIRQ_D,	12,		PIRQ_NC },
	{ PIRQ_E,	14,		PIRQ_NC },
	{ PIRQ_F,	15,		PIRQ_NC },
	{ PIRQ_G,	12,		PIRQ_NC },
	{ PIRQ_H,	14,		PIRQ_NC },

	{ PIRQ_SCI,	ACPI_SCI_IRQ,	ACPI_SCI_IRQ },
	{ PIRQ_SDIO,	PIRQ_NC,	PIRQ_NC },
	{ PIRQ_GPIO,	11,		11 },
	{ PIRQ_I2C0,	10,		10 },
	{ PIRQ_I2C1,	 7,		 7 },
	{ PIRQ_I2C2,	 6,		 6 },
	{ PIRQ_I2C3,	 5,		 5 },
	{ PIRQ_UART0,	 4,		 4 },
	{ PIRQ_UART1,	 3,		 3 },

	/* The MISC registers are not interrupt numbers */
	{ PIRQ_MISC,	0xfa,		0x00 },
	{ PIRQ_MISC0,	0x91,		0x00 },
	{ PIRQ_HPET_L,	0x00,		0x00 },
	{ PIRQ_HPET_H,	0x00,		0x00 },
};

const struct fch_irq_routing *mb_get_fch_irq_mapping(size_t *length)
{
	*length = ARRAY_SIZE(fch_irq_map);
	return fch_irq_map;
}

static void mainboard_configure_gpios(void)
{
	size_t base_num_gpios, override_num_gpios;
	const struct soc_amd_gpio *base_gpios, *override_gpios;

	baseboard_gpio_table(&base_gpios, &base_num_gpios);
	variant_override_gpio_table(&override_gpios, &override_num_gpios);

	gpio_configure_pads_with_override(base_gpios, base_num_gpios,
				override_gpios, override_num_gpios);
}

static void mainboard_init(void *chip_info)
{
	mainboard_configure_gpios();
	mainboard_ec_init();
}

static void mainboard_enable(struct device *dev)
{
	/* TODO: b/184678786 - Move into espi_config */
	/* Unmask eSPI IRQ 1 (Keyboard) */
	pm_write32(PM_ESPI_INTR_CTRL, PM_ESPI_DEV_INTR_MASK & ~(BIT(1)));
}

void smm_mainboard_pci_resource_store_init(struct smm_pci_resource_info *slots, size_t size)
{
	soc_xhci_store_resources(slots, size);
}

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