coreboot-kgpe-d16/src/mainboard/google/cyan/ec.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2012 Google Inc.
 * Copyright (C) 2015 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 <arch/acpi.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
#include "ec.h"
#include <vendorcode/google/chromeos/chromeos.h>
#include <types.h>

void mainboard_ec_init(void)
{
	printk(BIOS_DEBUG, "mainboard_ec_init\n");
	post_code(0xf0);

#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
	/* Restore SCI event mask on resume. */
	if (acpi_is_wakeup_s3()) {
		google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS |
					   MAINBOARD_EC_S3_WAKE_EVENTS);

		/* Disable SMI and wake events */
		google_chromeec_set_smi_mask(0);

		/* Clear pending events */
		while (google_chromeec_get_event() != 0)
			;
		/*
		 * Set SCI mask.OS may not generate SMI event to set
		 * this on S3 resume.
		 */
		google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS);
	} else {
		google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS |
					   MAINBOARD_EC_S5_WAKE_EVENTS);
	}

	/* Clear wake event mask */
	google_chromeec_set_wake_mask(0);
#endif
	post_code(0xf1);
}