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wdenk012771d2002-03-08 21:31:05 +00001/*
2 * (C) Copyright 2001
3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
4 *
Wolfgang Denk3765b3e2013-10-07 13:07:26 +02005 * SPDX-License-Identifier: GPL-2.0+
wdenk012771d2002-03-08 21:31:05 +00006 */
7
8/*
9 * Watchdog functions and macros.
10 */
11#ifndef _WATCHDOG_H_
12#define _WATCHDOG_H_
13
Simon Glassa6741bc2013-03-05 14:39:42 +000014#if !defined(__ASSEMBLY__)
15/*
16 * Reset the watchdog timer, always returns 0
17 *
18 * This function is here since it is shared between board_f() and board_r(),
19 * and the legacy arch/<arch>/board.c code.
20 */
21int init_func_watchdog_reset(void);
22#endif
23
Simon Glass9be2e792016-05-14 18:49:35 -060024#if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
Simon Glassa6741bc2013-03-05 14:39:42 +000025#define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
26#define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
27#else
28#define INIT_FUNC_WATCHDOG_INIT
29#define INIT_FUNC_WATCHDOG_RESET
30#endif
31
wdenk012771d2002-03-08 21:31:05 +000032#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
33# error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
34#endif
35
36/*
37 * Hardware watchdog
38 */
39#ifdef CONFIG_HW_WATCHDOG
40 #if defined(__ASSEMBLY__)
41 #define WATCHDOG_RESET bl hw_watchdog_reset
42 #else
43 extern void hw_watchdog_reset(void);
44
45 #define WATCHDOG_RESET hw_watchdog_reset
46 #endif /* __ASSEMBLY__ */
47#else
48 /*
49 * Maybe a software watchdog?
50 */
51 #if defined(CONFIG_WATCHDOG)
52 #if defined(__ASSEMBLY__)
53 #define WATCHDOG_RESET bl watchdog_reset
54 #else
55 extern void watchdog_reset(void);
56
57 #define WATCHDOG_RESET watchdog_reset
58 #endif
59 #else
60 /*
61 * No hardware or software watchdog.
62 */
63 #if defined(__ASSEMBLY__)
64 #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
65 #else
66 #define WATCHDOG_RESET() {}
67 #endif /* __ASSEMBLY__ */
68 #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
69#endif /* CONFIG_HW_WATCHDOG */
70
71/*
72 * Prototypes from $(CPU)/cpu.c.
73 */
74
Sonic Zhange9a389a2013-04-07 18:02:37 +080075#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
Tom Rinia6720762013-01-14 13:10:07 -070076 void hw_watchdog_init(void);
77#endif
Boschung, Rainer0f8062b2014-06-03 09:05:14 +020078
79#if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__)
80 void init_85xx_watchdog(void);
81#endif
wdenk012771d2002-03-08 21:31:05 +000082#endif /* _WATCHDOG_H_ */