1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include "los_config.h"
33 #ifdef LOSCFG_SHELL
34 #include "shcmd.h"
35 #include "shell.h"
36 #endif
37 #include "los_swtmr_pri.h"
38
39
40 #ifdef LOSCFG_SHELL_CMD_DEBUG
41 STATIC BOOL systemExcReset = FALSE;
42
OsSystemExcIsReset(VOID)43 LITE_OS_SEC_TEXT_MINOR BOOL OsSystemExcIsReset(VOID)
44 {
45 return systemExcReset;
46 }
47 #ifdef LOSCFG_DRIVERS_HDF_PLATFORM_WATCHDOG
48 #include "watchdog_if.h"
49
50 #define WATCHDOG_TIMER_INTERVAL 5 // 5 seconds
51 #define WATCHDOG_TIMER_INTERVAL_HALF (WATCHDOG_TIMER_INTERVAL / 2)
52
53 STATIC UINT16 g_swtmrID;
54 STATIC BOOL g_wdStarted = FALSE;
55 STATIC DevHandle g_wdHandle;
56
StartWatchdog(void)57 STATIC void StartWatchdog(void)
58 {
59 int32_t ret;
60 if (g_wdStarted) {
61 return;
62 }
63
64 ret = WatchdogOpen(0, &g_wdHandle);
65 if (ret != HDF_SUCCESS) {
66 return;
67 }
68 WatchdogSetTimeout(g_wdHandle, WATCHDOG_TIMER_INTERVAL);
69
70 if (LOS_SwtmrCreate(LOSCFG_BASE_CORE_TICK_PER_SECOND * WATCHDOG_TIMER_INTERVAL_HALF, LOS_SWTMR_MODE_PERIOD,
71 (SWTMR_PROC_FUNC)WatchdogFeed, &g_swtmrID, (UINTPTR)g_wdHandle) != LOS_OK) {
72 WatchdogClose(g_wdHandle);
73 g_wdHandle = NULL;
74 return;
75 }
76
77 WatchdogStart(g_wdHandle);
78 LOS_SwtmrStart(g_swtmrID);
79 g_wdStarted = TRUE;
80 }
81
StopWatchdog(void)82 STATIC void StopWatchdog(void)
83 {
84 if (!g_wdStarted) {
85 return;
86 }
87
88 LOS_SwtmrStop(g_swtmrID);
89 LOS_SwtmrDelete(g_swtmrID);
90 g_swtmrID = 0;
91
92 WatchdogStop(g_wdHandle);
93 WatchdogClose(g_wdHandle);
94 g_wdHandle = NULL;
95
96 g_wdStarted = FALSE;
97 }
98
OsShellCmdSystemExcReset(INT32 argc,const CHAR ** argv)99 LITE_OS_SEC_TEXT_MINOR UINT32 OsShellCmdSystemExcReset(INT32 argc, const CHAR **argv)
100 {
101 if (argc != 1) {
102 goto EXC_RESET_HELP;
103 }
104
105 if (strcmp(argv[0], "on") == 0) {
106 systemExcReset = TRUE;
107 StartWatchdog();
108 PRINTK("panicreset on!\n");
109 return LOS_OK;
110 }
111
112 if (strcmp(argv[0], "off") == 0) {
113 systemExcReset = FALSE;
114 StopWatchdog();
115 PRINTK("panicreset off!\n");
116 return LOS_OK;
117 }
118
119 EXC_RESET_HELP:
120 PRINTK("usage: panicreset [on/off]\n");
121 return LOS_OK;
122 }
123
124 SHELLCMD_ENTRY(panic_reset_shellcmd, CMD_TYPE_EX, "panicreset", 1, (CmdCallBackFunc)OsShellCmdSystemExcReset);
125 #endif
126 #endif
127
128