src/mainboard/intel/glkrvp/ec.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright 2017 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 <arch/io.h>
#include <console/console.h>
#include <ec/ec.h>
#include <ec/google/chromeec/ec.h>
#include <intelblocks/lpc_lib.h>
#include <variant/ec.h>

static void ramstage_ec_init(void)
{
	const struct google_chromeec_event_info info = {
		.log_events = MAINBOARD_EC_LOG_EVENTS,
		.sci_events = MAINBOARD_EC_SCI_EVENTS,
		.s3_wake_events = MAINBOARD_EC_S3_WAKE_EVENTS,
		.s5_wake_events = MAINBOARD_EC_S5_WAKE_EVENTS,
		.s0ix_wake_events = MAINBOARD_EC_S0IX_WAKE_EVENTS,
	};

	printk(BIOS_ERR, "mainboard: EC init\n");

	google_chromeec_events_init(&info, acpi_is_wakeup_s3());
}

static void bootblock_ec_init(void)
{
	uint16_t ec_ioport_base;
	size_t ec_ioport_size;

	/*
	 * Set up LPC decoding for the ChromeEC I/O port ranges:
	 * - Ports 62/66, 60/64, and 200->208
	 * - ChromeEC specific communication I/O ports.
	 */
	lpc_enable_fixed_io_ranges(LPC_IOE_EC_62_66 | LPC_IOE_KBC_60_64
		| LPC_IOE_LGE_200);
	google_chromeec_ioport_range(&ec_ioport_base, &ec_ioport_size);
	lpc_open_pmio_window(ec_ioport_base, ec_ioport_size);
}

void mainboard_ec_init(void)
{
	if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)) {
		if (ENV_RAMSTAGE)
			ramstage_ec_init();
		else if (ENV_BOOTBLOCK)
			bootblock_ec_init();
	} else if (ENV_BOOTBLOCK) {
		/*
		 * Set up LPC decoding for the ChromeEC I/O port ranges:
		 * - Ports 62/66, 60/64, and 200->208
		 * - ChromeEC specific communication I/O ports.
		 */
		lpc_enable_fixed_io_ranges(LPC_IOE_EC_62_66 | LPC_IOE_KBC_60_64
			| LPC_IOE_LGE_200);
	}

	if (IS_ENABLED(CONFIG_GLK_INTEL_EC)) {
		printk(BIOS_ERR, "S3 Hack Enable ACPI mode: outb(0xaa,0x66)\n");
		outb(0xaa, 0x66);
		printk(BIOS_INFO, "Hack to turn on the CPU fan\n");
		outb(0x81, 0x66);
	        outb(0x44, 0x62);
		outb(0x32, 0x62);
                /* Need delay here, hence second outb */
                outb(0x32, 0x62);
		outb(0x1a, 0x66);
	}
}