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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 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * Watchdog functions and macros.
26 */
27#ifndef _WATCHDOG_H_
28#define _WATCHDOG_H_
29
Simon Glassa6741bc2013-03-05 14:39:42 +000030#if !defined(__ASSEMBLY__)
31/*
32 * Reset the watchdog timer, always returns 0
33 *
34 * This function is here since it is shared between board_f() and board_r(),
35 * and the legacy arch/<arch>/board.c code.
36 */
37int init_func_watchdog_reset(void);
38#endif
39
40#ifdef CONFIG_WATCHDOG
41#define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
42#define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
43#else
44#define INIT_FUNC_WATCHDOG_INIT
45#define INIT_FUNC_WATCHDOG_RESET
46#endif
47
wdenk012771d2002-03-08 21:31:05 +000048#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
49# error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
50#endif
51
52/*
53 * Hardware watchdog
54 */
55#ifdef CONFIG_HW_WATCHDOG
56 #if defined(__ASSEMBLY__)
57 #define WATCHDOG_RESET bl hw_watchdog_reset
58 #else
59 extern void hw_watchdog_reset(void);
60
61 #define WATCHDOG_RESET hw_watchdog_reset
62 #endif /* __ASSEMBLY__ */
63#else
64 /*
65 * Maybe a software watchdog?
66 */
67 #if defined(CONFIG_WATCHDOG)
68 #if defined(__ASSEMBLY__)
69 #define WATCHDOG_RESET bl watchdog_reset
70 #else
71 extern void watchdog_reset(void);
72
73 #define WATCHDOG_RESET watchdog_reset
74 #endif
75 #else
76 /*
77 * No hardware or software watchdog.
78 */
79 #if defined(__ASSEMBLY__)
80 #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
81 #else
82 #define WATCHDOG_RESET() {}
83 #endif /* __ASSEMBLY__ */
84 #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
85#endif /* CONFIG_HW_WATCHDOG */
86
87/*
88 * Prototypes from $(CPU)/cpu.c.
89 */
90
91/* MPC 8xx */
92#if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__)
93 void reset_8xx_watchdog(volatile immap_t *immr);
94#endif
95
wdenk0db5bca2003-03-31 17:27:09 +000096/* MPC 5xx */
97#if defined(CONFIG_5xx) && !defined(__ASSEMBLY__)
98 void reset_5xx_watchdog(volatile immap_t *immr);
99#endif
100
Detlev Zundela21fb982010-01-20 14:28:48 +0100101/* MPC 5xxx */
102#if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__)
103 void reset_5xxx_watchdog(void);
104#endif
105
Wolfgang Denk0c8721a2005-09-23 11:05:55 +0200106/* AMCC 4xx */
wdenk012771d2002-03-08 21:31:05 +0000107#if defined(CONFIG_4xx) && !defined(__ASSEMBLY__)
108 void reset_4xx_watchdog(void);
109#endif
110
Sonic Zhange9a389a2013-04-07 18:02:37 +0800111#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
Tom Rinia6720762013-01-14 13:10:07 -0700112 void hw_watchdog_init(void);
113#endif
wdenk012771d2002-03-08 21:31:05 +0000114#endif /* _WATCHDOG_H_ */