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9f2e621d80
We want this function to be available for all chips, so move it into a generic place. The task_disable_irq() from the LM4 version can be left in watchdog_check(), to keep the watchdog_trace() function generic. BUG=chrome-os-partner:10145 TEST=build for all boards Change-Id: I98c60ce5958f1498b84a233ef04290a68a7838c5 Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/24397 Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Watchdog driver */
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#ifndef __CROS_EC_WATCHDOG_H
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#define __CROS_EC_WATCHDOG_H
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#define WATCHDOG_PERIOD_MS 1100 /* Watchdog period in ms */
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/*
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* Interval in ms between reloads of the watchdog timer. Should be less
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* than half of the watchdog period.
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*/
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#define WATCHDOG_RELOAD_MS 500
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/* Initialize the watchdog. This will cause the CPU to reboot if it has been
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* more than 2 watchdog periods since watchdog_reload() has been called. */
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int watchdog_init(void);
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/**
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* Display a trace with information about an expired watchdog timer
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*
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* This shows the location in the code where the expiration happened.
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* Usually this helps locate a loop which is blocking execution of the
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* watchdog task.
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*
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* @param excep_lr Value of lr to indicate caller return
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* @param excep_sp Value of sp to indicate caller task id
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*/
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void watchdog_trace(uint32_t excep_lr, uint32_t excep_sp);
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/* Reload the watchdog counter */
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void watchdog_reload(void);
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#endif /* __CROS_EC_WATCHDOG_H */
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