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/*
* 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 IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_LPC)
int get_lid_switch(void)
{
if (!IS_ENABLED(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 (IS_ENABLED(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));
}
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