/* * This file is part of the coreboot project. * * Copyright 2016 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. */ #include <bootmode.h> #include <cbmem.h> #include <ec/google/chromeec/ec.h> #if CONFIG(EC_GOOGLE_CHROMEEC_LPC) int get_lid_switch(void) { if (!CONFIG(VBOOT_LID_SWITCH)) return -1; return !!(google_chromeec_get_switches() & EC_SWITCH_LID_OPEN); } #endif int get_recovery_mode_switch(void) { /* Check for dedicated recovery switch first. */ if (CONFIG(EC_GOOGLE_CHROMEEC_LPC) && (google_chromeec_get_switches() & EC_SWITCH_DEDICATED_RECOVERY)) return 1; /* Check if the EC has posted the keyboard recovery/fastboot event. */ return !!(google_chromeec_get_events_b() & (EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY) | EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_FASTBOOT))); } int get_recovery_mode_retrain_switch(void) { uint64_t events; const uint64_t mask = EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY_HW_REINIT); /* * Check if the EC has posted the keyboard recovery event with memory * retrain. */ events = google_chromeec_get_events_b(); if (cbmem_possibly_online()) { const uint64_t *events_save; events_save = cbmem_find(CBMEM_ID_EC_HOSTEVENT); if (events_save != NULL) events |= *events_save; } return !!(events & mask); } int clear_recovery_mode_switch(void) { /* Clear all host event bits requesting recovery mode. */ return google_chromeec_clear_events_b( EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY) | EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY_HW_REINIT) | EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_FASTBOOT)); }