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Diffstat (limited to 'meta-amd-bsp/recipes-applications/watchdog-test/files/watchdog-test.c')
| -rw-r--r-- | meta-amd-bsp/recipes-applications/watchdog-test/files/watchdog-test.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-applications/watchdog-test/files/watchdog-test.c b/meta-amd-bsp/recipes-applications/watchdog-test/files/watchdog-test.c new file mode 100644 index 00000000..daedce98 --- /dev/null +++ b/meta-amd-bsp/recipes-applications/watchdog-test/files/watchdog-test.c @@ -0,0 +1,288 @@ +/***************************************************************************** +* +* Copyright (c) 2014, Advanced Micro Devices, Inc. +* All rights reserved. +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions are met: +* * Redistributions of source code must retain the above copyright +* notice, this list of conditions and the following disclaimer. +* * Redistributions in binary form must reproduce the above copyright +* notice, this list of conditions and the following disclaimer in the +* documentation and/or other materials provided with the distribution. +* * Neither the name of Advanced Micro Devices, Inc. nor the names of +* its contributors may be used to endorse or promote products derived +* from this software without specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY +* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +* +***************************************************************************/ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <signal.h> +#include <readline/readline.h> +#include <linux/watchdog.h> + +#define WATCHDOG_APP_VERSION "0.1" + +int fd; /* /dev/watchdog file descriptor */ +volatile int ping; + +char *show_prompt(void) +{ + return "$ "; +} + +void sighandler(int sig) +{ + printf("\n%s", show_prompt()); +} + +void pinghandler(int sig) +{ + ping = 0; + printf("\n"); + /* Set the signal handler back to the original */ + signal(SIGINT, sighandler); +} + +void show_license(void) +{ + printf("/*****************************************************************************\n" + "*\n" + "* Copyright (c) 2014, Advanced Micro Devices, Inc.\n" + "* All rights reserved.\n" + "*\n" + "* Redistribution and use in source and binary forms, with or without\n" + "* modification, are permitted provided that the following conditions are met:\n" + "* * Redistributions of source code must retain the above copyright\n" + "* notice, this list of conditions and the following disclaimer.\n" + "* * Redistributions in binary form must reproduce the above copyright\n" + "* notice, this list of conditions and the following disclaimer in the\n" + "* documentation and/or other materials provided with the distribution.\n" + "* * Neither the name of Advanced Micro Devices, Inc. nor the names of\n" + "* its contributors may be used to endorse or promote products derived\n" + "* from this software without specific prior written permission.\n" + "*\n" + "* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n" + "* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n" + "* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n" + "* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY\n" + "* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n" + "* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n" + "* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n" + "* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" + "* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\n" + "* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" + "*\n" + "*\n" + "***************************************************************************/\n"); +} + +void print_usage() +{ + printf("\nCommands Supported ->\n"); + printf(" disablewatchdog : Disables the Watchdog Timer\n"); + printf(" enablewatchdog : Enables the Watchdog Timer\n"); + printf(" getfeatures : Shows the features supported by the Watchdog implementation\n"); + printf(" getstatus : Gives the current status of Watchdog Timer\n"); + printf(" getbootstatus : Displays the status of Watchdog Hardware after reboot or fresh boot\n"); + printf(" ping : Resets Watchdog Timer at regular intervals\n"); + printf(" gettimeout : Gives the value of Watchdog timeout (in frequency units)\n"); + printf(" gettimeleft : Gives the current value of Watchdog Timer (in frequency units)\n"); + printf(" sendmagicchar : Sends the magic character 'V' to the Watchdog device\n"); + printf(" settimeout <timeout> : Sets the new value for Watchdog timeout (in frequency units)\n"); + printf(" license : Displays the terms of LICENSE for this application\n"); + printf(" help : Displays help text\n"); + printf(" exit : Exits the application\n\n"); +} + +void parse_cmd(const char *cmdline) +{ + if ((cmdline == NULL) || (strncmp(cmdline, "exit", 4) == 0)) { + printf("\nExiting...\n"); + printf("\nIf the Watchdog Timer was not disabled, and you did not send the magic character,\n" + "Watchdog Timer is still ticking, and your system will reboot soon\n"); + + if(close(fd) < 0) + perror("Error closing /dev/watchdog"); + exit(EXIT_SUCCESS); + } else if (strncmp(cmdline, "help", 4) == 0) + print_usage(); + else if (strncmp(cmdline, "disablewatchdog", 7) == 0) { + int flags; + + printf("\nDisabling watchdog timer...\n"); + flags = WDIOS_DISABLECARD; + if (ioctl(fd, WDIOC_SETOPTIONS, &flags) < 0) + perror("Could not disable watchdog"); + } else if (strncmp(cmdline, "enablewatchdog", 6) == 0) { + int flags; + + printf("\nEnabling watchdog timer...\n"); + flags = WDIOS_ENABLECARD; + if (ioctl(fd, WDIOC_SETOPTIONS, &flags) < 0) + printf("Could not enable watchdog"); + } else if (strncmp(cmdline, "getfeatures", 10) == 0) { + struct watchdog_info info; + + if(ioctl(fd, WDIOC_GETSUPPORT, &info) < 0) + perror("Could not get watchdog features"); + + printf("\nIdentity:\t\t%s\n", info.identity); + printf("Firmware Version:\t%u\n", info.firmware_version); + printf("Options Set: \n" + "%s%s%s%s%s%s%s%s%s%s%s\n", + info.options & WDIOF_OVERHEAT ? "\t\t\tReset due to CPU overheat\n": "", + info.options & WDIOF_FANFAULT ? "\t\t\tFan failed\n": "", + info.options & WDIOF_EXTERN1 ? "\t\t\tExternal relay 1\n": "", + info.options & WDIOF_EXTERN2 ? "\t\t\tExternal relay 2\n": "", + info.options & WDIOF_POWERUNDER ? "\t\t\tPower bad/power fault\n": "", + info.options & WDIOF_CARDRESET ? "\t\t\tCard previously reset the CPU\n": "", + info.options & WDIOF_POWEROVER ? "\t\t\tPower over voltage\n": "", + info.options & WDIOF_SETTIMEOUT ? "\t\t\tSet timeout (in frequency units)\n": "", + info.options & WDIOF_MAGICCLOSE ? "\t\t\tSupports magic close character\n": "", + info.options & WDIOF_PRETIMEOUT ? "\t\t\tPretimeout (in frequency units)\n": "", + info.options & WDIOF_KEEPALIVEPING ? "\t\t\tKeep alive ping reply\n": ""); + } else if (strncmp(cmdline, "getstatus", 9) == 0) { + int status; + + printf("\n"); + if(ioctl(fd, WDIOC_GETSTATUS, &status) < 0) + perror("Could not get watchdog status"); + + if (status & (1 << 0)) + printf("\nWatchdog device is active\n"); + if (status & (1 << 1)) + printf("Watchdog device opened via /dev/watchdog\n"); + if (status & (1 << 2)) + printf("Received magic char\n"); + if (status & (1 << 3)) + printf("nowayout set\n"); + if (status & (1 << 4)) + printf("Watchdog device unregistered\n"); + } else if (strncmp(cmdline, "getbootstatus", 7) == 0) { + int bootstatus; + + if(ioctl(fd, WDIOC_GETBOOTSTATUS, &bootstatus) < 0) + perror("Could not get bootstatus"); + + printf("\nbootstatus: \n" + "%s%s%s%s%s%s%s%s%s%s%s\n", + bootstatus & WDIOF_OVERHEAT ? "\t\t\tReset due to CPU overheat\n": "", + bootstatus & WDIOF_FANFAULT ? "\t\t\tFan failed\n": "", + bootstatus & WDIOF_EXTERN1 ? "\t\t\tExternal relay 1\n": "", + bootstatus & WDIOF_EXTERN2 ? "\t\t\tExternal relay 2\n": "", + bootstatus & WDIOF_POWERUNDER ? "\t\t\tPower bad/power fault\n": "", + bootstatus & WDIOF_CARDRESET ? "\t\t\tCard previously reset the CPU\n": "", + bootstatus & WDIOF_POWEROVER ? "\t\t\tPower over voltage\n": "", + bootstatus & WDIOF_SETTIMEOUT ? "\t\t\tSet timeout (in frequency units)\n": "", + bootstatus & WDIOF_MAGICCLOSE ? "\t\t\tSupports magic close character\n": "", + bootstatus & WDIOF_PRETIMEOUT ? "\t\t\tPretimeout (in frequency units)\n": "", + bootstatus & WDIOF_KEEPALIVEPING ? "\t\t\tKeep alive ping reply\n": ""); + } else if (strncmp(cmdline, "ping", 4) == 0) { + int dummy; + + printf("\nContinuosly resetting Watchdog...press Ctrl+C to stop\n"); + printf("\nOnce you stop pinging, Watchog Timer will start counting down...\n"); + printf("...If the Watchdog Timer was enabled\n"); + + /* Lets set a different handler for Ctrl+C */ + signal(SIGINT, pinghandler); + + ping = 1; + while (ping) { + if(ioctl(fd, WDIOC_KEEPALIVE, &dummy) < 0) { + perror("Error sending ping"); + break; + } + sleep(1); + } + } else if (strncmp(cmdline, "gettimeout", 10) == 0) { + int timeout; + + if(ioctl(fd, WDIOC_GETTIMEOUT, &timeout) < 0) + perror("Error getting watchdog timeout"); + + printf("\nCurrent setting of timeout is %d frequency units\n", timeout); + } else if (strncmp(cmdline, "gettimeleft", 11) == 0) { + int timeleft; + + if(ioctl(fd, WDIOC_GETTIMELEFT, &timeleft) < 0) + perror("Error getting watchdog timeleft"); + + printf("\nTime left for system reboot/shutdown is %d frequency units\n", timeleft); + } else if (strncmp(cmdline, "sendmagicchar", 9) == 0) { + printf("\nSending magic character to Watchdog device...\n"); + printf("\nWatchdog Timer will be stopped once you exit the application\n"); + if(write(fd, "V", 1) < 0) + perror("Could not send magic character"); + } else if (strncmp(cmdline, "settimeout", 10) == 0) { + const char *charp = cmdline; + int timeout; + + /* Lets point to the end of first token */ + charp += strlen("settimeout"); + /* Skip blank characters */ + while (*charp == ' ' || *charp == '\t' || *charp == '\n') + charp++; + + /* Now we should be pointing to the first 'digit' character */ + timeout = atoi(charp); + + if(ioctl(fd, WDIOC_SETTIMEOUT, &timeout) < 0) { + perror("Could not set watchdog timeout"); + return; + } + + printf("\nSetting timeout to %d frequency units\n", timeout); + printf("Watchdog Timer will start counting down with the new timeout value\n"); + } else if (strncmp(cmdline, "license", 7) == 0) { + show_license(); + } else { + printf("\nUnknown command\n"); + print_usage(); + } +} + +int main(void) +{ + char *cmdline= NULL; + + printf("Watchdog sample application version: %s\n", WATCHDOG_APP_VERSION); + printf("Copyright (c) 2014, Advanced Micro Devices, Inc.\n" + "This sample application comes with ABSOLUTELY NO WARRANTY;\n" + "This is free software, and you are welcome to redistribute it\n" + "under certain conditions; type `license' for details.\n\n"); + + + if ((fd = open("/dev/watchdog", O_WRONLY)) < 0) { + perror("Could not open /dev/watchdog"); + exit(1); + } + + /* Handler for Ctrl+C */ + signal(SIGINT, sighandler); + + while (1) { + cmdline = readline(show_prompt()); + parse_cmd(cmdline); + /* Free the memory malloc'ed by readline */ + free(cmdline); + } + + /* Should never reach here */ + return 0; +} |