src/mainboard/intel/kunimitsu/ec.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2015 Google Inc.
   5  * Copyright (C) 2015 Intel Corporation
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <arch/acpi.h>
  18 #include <console/console.h>
  19 #include <ec/google/chromeec/ec.h>
  20 #include "ec.h"
  21
  22 void mainboard_ec_init(void)
  23 {
  24         printk(BIOS_DEBUG, "mainboard: EC init\n");
  25
  26         if (acpi_is_wakeup_s3()) {
  27                 google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS |
  28                                            MAINBOARD_EC_S3_WAKE_EVENTS);
  29
  30                 /* Disable SMI and wake events */
  31                 google_chromeec_set_smi_mask(0);
  32
  33                 /* Clear pending events */
  34                 while (google_chromeec_get_event() != 0)
  35                         ;
  36
  37                 /* Restore SCI event mask */
  38                 google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS);
  39         } else {
  40                 google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS |
  41                                            MAINBOARD_EC_S5_WAKE_EVENTS);
  42         }
  43
  44         /* Clear wake event mask */
  45         google_chromeec_set_wake_mask(0);
  46 }