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/* Copyright 2020 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 "registers.h"
#include "watchdog.h"
void watchdog_reload(void)
{
SCP_CORE0_WDT_KICK = BIT(0);
}
DECLARE_HOOK(HOOK_TICK, watchdog_reload, HOOK_PRIO_DEFAULT);
int watchdog_init(void)
{
const uint32_t timeout = WDT_PERIOD(CONFIG_WATCHDOG_PERIOD_MS);
/* disable watchdog */
SCP_CORE0_WDT_CFG &= ~WDT_EN;
/* clear watchdog irq */
SCP_CORE0_WDT_IRQ |= BIT(0);
/* enable watchdog */
SCP_CORE0_WDT_CFG = WDT_EN | timeout;
/* reload watchdog */
watchdog_reload();
return EC_SUCCESS;
}
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