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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
Sonic Zhangd54d7eb2014-07-17 19:01:34 +080024#if defined(CONFIG_SYS_GENERIC_BOARD) && \
25 (defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG))
Simon Glassa6741bc2013-03-05 14:39:42 +000026#define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
27#define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
28#else
29#define INIT_FUNC_WATCHDOG_INIT
30#define INIT_FUNC_WATCHDOG_RESET
31#endif
32
wdenk012771d2002-03-08 21:31:05 +000033#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
34# error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
35#endif
36
37/*
38 * Hardware watchdog
39 */
40#ifdef CONFIG_HW_WATCHDOG
41 #if defined(__ASSEMBLY__)
42 #define WATCHDOG_RESET bl hw_watchdog_reset
43 #else
44 extern void hw_watchdog_reset(void);
45
46 #define WATCHDOG_RESET hw_watchdog_reset
47 #endif /* __ASSEMBLY__ */
48#else
49 /*
50 * Maybe a software watchdog?
51 */
52 #if defined(CONFIG_WATCHDOG)
53 #if defined(__ASSEMBLY__)
54 #define WATCHDOG_RESET bl watchdog_reset
55 #else
56 extern void watchdog_reset(void);
57
58 #define WATCHDOG_RESET watchdog_reset
59 #endif
60 #else
61 /*
62 * No hardware or software watchdog.
63 */
64 #if defined(__ASSEMBLY__)
65 #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
66 #else
67 #define WATCHDOG_RESET() {}
68 #endif /* __ASSEMBLY__ */
69 #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
70#endif /* CONFIG_HW_WATCHDOG */
71
72/*
73 * Prototypes from $(CPU)/cpu.c.
74 */
75
76/* MPC 8xx */
77#if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__)
78 void reset_8xx_watchdog(volatile immap_t *immr);
79#endif
80
wdenk0db5bca2003-03-31 17:27:09 +000081/* MPC 5xx */
82#if defined(CONFIG_5xx) && !defined(__ASSEMBLY__)
83 void reset_5xx_watchdog(volatile immap_t *immr);
84#endif
85
Detlev Zundela21fb982010-01-20 14:28:48 +010086/* MPC 5xxx */
87#if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__)
88 void reset_5xxx_watchdog(void);
89#endif
90
Wolfgang Denk0c8721a2005-09-23 11:05:55 +020091/* AMCC 4xx */
wdenk012771d2002-03-08 21:31:05 +000092#if defined(CONFIG_4xx) && !defined(__ASSEMBLY__)
93 void reset_4xx_watchdog(void);
94#endif
95
Sonic Zhange9a389a2013-04-07 18:02:37 +080096#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
Tom Rinia6720762013-01-14 13:10:07 -070097 void hw_watchdog_init(void);
98#endif
Boschung, Rainer0f8062b2014-06-03 09:05:14 +020099
100#if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__)
101 void init_85xx_watchdog(void);
102#endif
wdenk012771d2002-03-08 21:31:05 +0000103#endif /* _WATCHDOG_H_ */