RTEMS 6.1-rc7
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watchdog.h
1/* SPDX-License-Identifier: BSD-2-Clause */
2
3/* watchdog.h
4 *
5 * The LEON3 BSP timer watch-dog interface
6 *
7 * COPYRIGHT (c) 2012.
8 * Cobham Gaisler AB.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef __WATCHDOG_H__
33#define __WATCHDOG_H__
34
35#ifdef __cplusplus
36extern "C" {
37#endif
38
39/* Initialize BSP watchdog routines. Returns number of watchdog timers found.
40 * Currently only one is supported.
41 */
42int bsp_watchdog_init(void);
43
44/* Reload watchdog (last timer on the first GPTIMER core), all systems does not
45 * feature a watchdog, it is expected that if this function is called the
46 * user knows that there is a watchdog available.
47 *
48 * The prescaler is normally set to number of MHz of system, this is to
49 * make the system clock tick be stable.
50 *
51 * Arguments
52 * watchdog - Always 0 for now
53 * reload_value - Number of timer clocks (after prescaler) to count before
54 * watchdog is woken.
55 */
56void bsp_watchdog_reload(int watchdog, unsigned int reload_value);
57
58/* Stop watchdog timer */
59void bsp_watchdog_stop(int watchdog);
60
61/* Use watchdog0 timer to reset the system */
62void bsp_watchdog_system_reset(void);
63
64#ifdef __cplusplus
65}
66#endif
67
68#endif