92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 Google Inc.
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* Copyright (C) 2015 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/io.h>
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#include <console/console.h>
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#include <device/device.h>
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#include <device/pci.h>
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#include <rules.h>
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#include <gpio.h>
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#include <soc/gpio.h>
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#include <string.h>
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#include <ec/google/chromeec/ec.h>
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#include <vendorcode/google/chromeos/chromeos.h>
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#include "gpio.h"
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#include "ec.h"
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#if ENV_RAMSTAGE
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#include <boot/coreboot_tables.h>
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void fill_lb_gpios(struct lb_gpios *gpios)
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{
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struct lb_gpio *start_gpio = gpios->gpios;
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struct lb_gpio *gpio = start_gpio;
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fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "write protect",
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get_write_protect_state());
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fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "recovery",
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get_recovery_mode_switch());
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fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "developer",
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get_developer_mode_switch());
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fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "lid",
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get_lid_switch());
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fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "power", 0);
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fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "oprom", gfx_get_init_done());
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fill_lb_gpio(gpio++, GPIO_EC_IN_RW, ACTIVE_HIGH, "EC in RW",
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gpio_get(GPIO_EC_IN_RW));
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gpios->count = gpio - start_gpio;
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gpios->size = sizeof(*gpios) + (gpios->count * sizeof(*gpio));
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}
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#endif /* ENV_RAMSTAGE */
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int get_lid_switch(void)
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{
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/* Read lid switch state from the EC. */
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return !!(google_chromeec_get_switches() & EC_SWITCH_LID_OPEN);
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}
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int get_developer_mode_switch(void)
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{
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/* No physical developer mode switch. */
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return 0;
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}
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int get_recovery_mode_switch(void)
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{
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/* Check for dedicated recovery switch first. */
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if (google_chromeec_get_switches() & EC_SWITCH_DEDICATED_RECOVERY)
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return 1;
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/* Otherwise check if the EC has posted the keyboard recovery event. */
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return !!(google_chromeec_get_events_b() &
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EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
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}
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int clear_recovery_mode_switch(void)
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{
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/* Clear keyboard recovery event. */
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return google_chromeec_clear_events_b(
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EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
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}
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int get_write_protect_state(void)
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{
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/* Read PCH_WP GPIO. */
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return gpio_get(GPIO_PCH_WP);
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}
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