/* * 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); }