src/mainboard/google/peppy/ec.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2012 Google Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/acpi.h>
  17 #include <types.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         post_code(0xf0);
  26
  27         /* Restore SCI event mask on resume. */
  28         if (acpi_is_wakeup_s3()) {
  29                 google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS |
  30                                            MAINBOARD_EC_S3_WAKE_EVENTS);
  31
  32                 /* Disable SMI and wake events */
  33                 google_chromeec_set_smi_mask(0);
  34
  35                 /* Clear pending events */
  36                 while (google_chromeec_get_event() != 0);
  37                 google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS);
  38         } else {
  39                 google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS |
  40                                            MAINBOARD_EC_S5_WAKE_EVENTS);
  41         }
  42
  43         /* Clear wake events, these are enabled on entry to sleep */
  44         google_chromeec_set_wake_mask(0);
  45
  46         post_code(0xf1);
  47 }