/* * This file is part of the coreboot project. * * Copyright (C) 2012 Google Inc. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <string.h> #include <vendorcode/google/chromeos/chromeos.h> #include <arch/io.h> #include <device/device.h> #include <device/pci.h> #include <southbridge/intel/lynxpoint/pch.h> #if CONFIG_EC_GOOGLE_CHROMEEC #include "ec.h" #include <ec/google/chromeec/ec.h> #endif #ifndef __PRE_RAM__ #include <boot/coreboot_tables.h> #define GPIO_COUNT 6 #define ACTIVE_LOW 0 #define ACTIVE_HIGH 1 static int get_lid_switch(void) { #if CONFIG_EC_GOOGLE_CHROMEEC u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES); return !!(ec_switches & EC_SWITCH_LID_OPEN); #else return 0; #endif } static void fill_lb_gpio(struct lb_gpio *gpio, int num, int polarity, const char *name, int force) { memset(gpio, 0, sizeof(*gpio)); gpio->port = num; gpio->polarity = polarity; if (force >= 0) gpio->value = force; else if (num >= 0) gpio->value = get_gpio(num); strncpy((char *)gpio->name, name, GPIO_MAX_NAME_LENGTH); } void fill_lb_gpios(struct lb_gpios *gpios) { struct lb_gpio *gpio; gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio)); gpios->count = GPIO_COUNT; gpio = gpios->gpios; fill_lb_gpio(gpio++, 58, ACTIVE_HIGH, "write protect", 0); 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", oprom_is_loaded); } #endif /* The dev-switch is virtual */ int get_developer_mode_switch(void) { return 0; } /* There are actually two recovery switches. One is the magic keyboard chord, * the other is driven by Servo. */ int get_recovery_mode_switch(void) { #if CONFIG_EC_GOOGLE_CHROMEEC u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES); u32 ec_events; /* If a switch is set, we don't need to look at events. */ if (ec_switches & (EC_SWITCH_DEDICATED_RECOVERY)) return 1; /* Else check if the EC has posted the keyboard recovery event. */ ec_events = google_chromeec_get_events_b(); return !!(ec_events & EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)); #else return 0; #endif } int get_write_protect_state(void) { return get_gpio(58); }