34 lines
721 B
C
34 lines
721 B
C
|
/* Copyright 2018 The Chromium OS Authors. All rights reserved.
|
||
|
|
* Use of this source code is governed by a BSD-style license that can be
|
||
|
|
* found in the LICENSE file.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Watchdog driver */
|
||
|
|
|
||
|
|
#include "common.h"
|
||
|
|
#include "hooks.h"
|
||
|
|
#include "panic.h"
|
||
|
|
#include "registers.h"
|
||
|
|
#include "watchdog.h"
|
||
|
|
|
||
|
|
void watchdog_reload(void)
|
||
|
|
{
|
||
|
|
SCP_WDT_RELOAD = SCP_WDT_RELOAD_VALUE;
|
||
|
|
}
|
||
|
|
DECLARE_HOOK(HOOK_TICK, watchdog_reload, HOOK_PRIO_DEFAULT);
|
||
|
|
|
||
|
|
int watchdog_init(void)
|
||
|
|
{
|
||
|
|
const uint32_t watchdog_timeout =
|
||
|
|
SCP_WDT_PERIOD(CONFIG_WATCHDOG_PERIOD_MS);
|
||
|
|
|
||
|
|
/* Disable watchdog */
|
||
|
|
SCP_WDT_CFG = 0;
|
||
|
|
/* Enable watchdog */
|
||
|
|
SCP_WDT_CFG = SCP_WDT_ENABLE | watchdog_timeout;
|
||
|
|
/* Reload watchdog */
|
||
|
|
watchdog_reload();
|
||
|
|
|
||
|
|
return EC_SUCCESS;
|
||
|
|
}
|