| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Google Inc. |
| * Copyright (C) 2015 Intel Corporation |
| * |
| * 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/io.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <rules.h> |
| #include <gpio.h> |
| #include <soc/gpio.h> |
| #include <string.h> |
| #include <ec/google/chromeec/ec.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| |
| #include "gpio.h" |
| #include "ec.h" |
| |
| #if ENV_RAMSTAGE |
| #include <boot/coreboot_tables.h> |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio *start_gpio = gpios->gpios; |
| struct lb_gpio *gpio = start_gpio; |
| |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "write protect", |
| get_write_protect_state()); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "recovery", |
| get_recovery_mode_switch()); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "developer", |
| get_developer_mode_switch()); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "lid", |
| get_lid_switch()); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "power", 0); |
| fill_lb_gpio(gpio++, -1, ACTIVE_HIGH, "oprom", gfx_get_init_done()); |
| fill_lb_gpio(gpio++, GPIO_EC_IN_RW, ACTIVE_HIGH, "EC in RW", |
| gpio_get(GPIO_EC_IN_RW)); |
| |
| gpios->count = gpio - start_gpio; |
| gpios->size = sizeof(*gpios) + (gpios->count * sizeof(*gpio)); |
| } |
| #endif /* ENV_RAMSTAGE */ |
| |
| int get_lid_switch(void) |
| { |
| /* Read lid switch state from the EC. */ |
| return !!(google_chromeec_get_switches() & EC_SWITCH_LID_OPEN); |
| } |
| |
| int get_developer_mode_switch(void) |
| { |
| /* No physical developer mode switch. */ |
| return 0; |
| } |
| |
| int get_recovery_mode_switch(void) |
| { |
| /* Check for dedicated recovery switch first. */ |
| if (google_chromeec_get_switches() & EC_SWITCH_DEDICATED_RECOVERY) |
| return 1; |
| |
| /* Otherwise check if the EC has posted the keyboard recovery event. */ |
| return !!(google_chromeec_get_events_b() & |
| EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)); |
| } |
| |
| int clear_recovery_mode_switch(void) |
| { |
| /* Clear keyboard recovery event. */ |
| return google_chromeec_clear_events_b( |
| EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)); |
| } |
| |
| int get_write_protect_state(void) |
| { |
| /* Read PCH_WP GPIO. */ |
| return gpio_get(GPIO_PCH_WP); |
| } |