2 * Virtual hardware watchdog.
4 * Copyright (C) 2009 Red Hat Inc.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
24 #include "qemu-common.h"
25 #include "sys-queue.h"
27 #include "hw/watchdog.h"
29 static LIST_HEAD(watchdog_list, WatchdogTimerModel) watchdog_list;
31 void watchdog_add_model(WatchdogTimerModel *model)
33 LIST_INSERT_HEAD(&watchdog_list, model, entry);
38 * 1 = exit program with error
39 * 2 = exit program without error
41 int select_watchdog(const char *p)
43 WatchdogTimerModel *model;
47 "qemu: only one watchdog option may be given\n");
51 /* -watchdog ? lists available devices and exits cleanly. */
52 if (strcmp(p, "?") == 0) {
53 LIST_FOREACH(model, &watchdog_list, entry) {
54 fprintf(stderr, "\t%s\t%s\n",
55 model->wdt_name, model->wdt_description);
60 LIST_FOREACH(model, &watchdog_list, entry) {
61 if (strcasecmp(model->wdt_name, p) == 0) {
67 fprintf(stderr, "Unknown -watchdog device. Supported devices are:\n");
68 LIST_FOREACH(model, &watchdog_list, entry) {
69 fprintf(stderr, "\t%s\t%s\n",
70 model->wdt_name, model->wdt_description);
75 int select_watchdog_action(const char *p)
77 if (strcasecmp(p, "reset") == 0)
78 watchdog_action = WDT_RESET;
79 else if (strcasecmp(p, "shutdown") == 0)
80 watchdog_action = WDT_SHUTDOWN;
81 else if (strcasecmp(p, "poweroff") == 0)
82 watchdog_action = WDT_POWEROFF;
83 else if (strcasecmp(p, "pause") == 0)
84 watchdog_action = WDT_PAUSE;
85 else if (strcasecmp(p, "debug") == 0)
86 watchdog_action = WDT_DEBUG;
87 else if (strcasecmp(p, "none") == 0)
88 watchdog_action = WDT_NONE;
95 /* This actually performs the "action" once a watchdog has expired,
96 * ie. reboot, shutdown, exit, etc.
98 void watchdog_perform_action(void)
100 switch(watchdog_action) {
101 case WDT_RESET: /* same as 'system_reset' in monitor */
102 qemu_system_reset_request();
105 case WDT_SHUTDOWN: /* same as 'system_powerdown' in monitor */
106 qemu_system_powerdown_request();
109 case WDT_POWEROFF: /* same as 'quit' command in monitor */
113 case WDT_PAUSE: /* same as 'stop' command in monitor */
118 fprintf(stderr, "watchdog: timer fired\n");
126 void watchdog_pc_init(PCIBus *pci_bus)
129 watchdog->wdt_pc_init(pci_bus);
132 void register_watchdogs(void)