自定义网站建设,宜章网站建设,wordpress 耗时,北海市高德小学简介文章目录1.bmc_wtd_cpld#xff1a;syscpld.c中wd_en和wd_kick节点对应寄存器#xff0c;crontab#xff0c;FUNCNAME2.AST芯片WDT切换主备#xff1a;BMC用WDT2作为主备切换的控制器2.1 AC后读取#xff1a;bmc处于主primary flash#xff08;设完后#xff1a;实际主syscpld.c中wd_en和wd_kick节点对应寄存器crontabFUNCNAME2.AST芯片WDT切换主备BMC用WDT2作为主备切换的控制器2.1 AC后读取bmc处于主primary flash设完后实际主wtd1主wtd2主2.2 切换spi备wtd2的2c寄存器设为0x93换另一个flash后reboot后从备起设完后实际备wtd1主wtd2备2.3 用WDT1切主设完后实际备wtd1备wtd2备2.4 用WDT2切主设完后实际备wtd1备wtd2主2.5 用WDT1切主设完后实际主wtd1主wtd2主2.6 关于清空寄存器设完后WTD1主WTD2主实际主2.7 结论从主切到备需要一个wdt的status是default也就是0的wdt然后用0x93切换3.BMC喂狗实现sys/class/gpio/gpio1/value获取gpio1值3.1 watch-dog.hwatch-dog.cmain.cMakefilerun-watch-dog.shsetup-watch-dog.shwatch-dog_0.1.bb4.post code1.bmc_wtd_cpldsyscpld.c中wd_en和wd_kick节点对应寄存器crontabFUNCNAME PATH/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin
WATCHDOG_LOG/tmp/watchdog.logusage(){program$(basename $0)echo Usage:echo $program operationecho operation : start stop kick query restartecho Examples:echo $program startecho
}kick()
{ret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret 0x1 ];thenecho 0x7c /sys/bus/i2c/devices/0-000d/wd_kickelseusageexitfiret$(date)echo $ret ${FUNCNAME[0]} $WATCHDOG_LOG
}enable()
{ret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret ! 0x1 ];thenecho 0x1 /sys/bus/i2c/devices/0-000d/wd_enelseusageexitfiret$(date)echo $ret ${FUNCNAME[0]} $WATCHDOG_LOG
}disable()
{ret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret 0x1 ];thenecho 0x0 /sys/bus/i2c/devices/0-000d/wd_enecho 0x7c /sys/bus/i2c/devices/0-000d/wd_kickelseusageexitfiret$(date)echo $ret ${FUNCNAME[0]} $WATCHDOG_LOG
}check_parameter()
{if [ $# -ne 1 ];thenusageexitficase ${1} instart | stop | kick |query |restart);;*) #除上面的其他的usageexit;;esac
}check_parameter $case ${1} instart)ret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret 0x1 ];thenusageexitfienablekick;;stop)disableexit;;kick)kickexit;;restart)ret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret 0x1 ];thenusageexitfienablekickexit;;query)ret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret 0x1 ];thenecho ENABLEelseecho DISABLEfiexit;;
esacwhile true
doret$(head -1 /sys/bus/i2c/devices/0-000d/wd_en)if [ $ret 0x1 ];thenkickfisleep 30
donerootbmc-oob:~# ps | grep wd588 root 2904 S runsv /etc/sv/wd591 root 3036 S {wd} /bin/bash /usr/local/bin/wd start779 root 3036 S grep wd
rootbmc-oob:~# wd query
ENABLE
rootbmc-oob:~# wd stop
rootbmc-oob:~# wd query
DISABLE
rootbmc-oob:~# wd restart
rootbmc-oob:~# wd kick
rootbmc-oob:~# wd query
ENABLEinit()
{ret$(ps |grep crond|grep -v grep)if [ x$ret x ];thenecho No found crond processexitfiif [ ! -d /crontabs ];thenmkdir /crontabstouch /crontabs/rootficrontab -c /etc/cron/crontabs/ /etc/cron/crontabs/rootcp /var/log/watchdog.sh /usr/local/bin/watchdog.sh
}add_task()
{echo * * * * * /usr/local/bin/watchdog.sh kick /etc/cron/crontabs/rootecho * * * * * date /var/log/date.log /etc/cron/crontabs/root
}del_task()
{sed -i /\* \* \* \* \* \/usr\/local\/bin\/watchdog.sh kick/d /etc/cron/crontabs/root #最后一个d代表删除
}2.AST芯片WDT切换主备BMC用WDT2作为主备切换的控制器
2.1 AC后读取bmc处于主primary flash设完后实际主wtd1主wtd2主 如下0x100十六进制不是二进制代表default flashoffset为30寄存器。
2.2 切换spi备wtd2的2c寄存器设为0x93换另一个flash后reboot后从备起设完后实际备wtd1主wtd2备 如下202第1位不是第0位和第9位置为1发现这时确实WDT2可控当前在备flash启动。
2.3 用WDT1切主设完后实际备wtd1备wtd2备 如下10是wdt1状态寄存器30是wdt2状态寄存器。302和202第1位都为1即second boot code。
2.4 用WDT2切主设完后实际备wtd1备wtd2主 2.5 用WDT1切主设完后实际主wtd1主wtd2主 2.6 关于清空寄存器设完后WTD1主WTD2主实际主 wdt1和wdt2都切到备flash。 如下clear寄存器清除wdt1的status保留了reset次数但是将code source主备清除为0主。 再用wdt2切换主。 这次切到了主。 用wdt1切换到备。 清空wdt1的status。这时如果用我们的测试脚本bootsource会判断是在主其实是在备。 尝试wdt1用0x13切换主成功切到主。
2.7 结论从主切到备需要一个wdt的status是default也就是0的wdt然后用0x93切换
从备切到主需要满足两三个wdt中都从备切到主。比如wdt1是备wdt2是备那要对wdt1wdt2都设一次0x93。如果wdt1wdt2中一个是备那对对应的wdt设0x93。
还有因为清空寄存器造成的虽然在备但是wdt都是显示在主这时候用0x13就可以切到主。用wdt2进行切换主备。避免使用清空寄存器0x14/0x34。
a0x00000100 #256 (1 0000 0000)
b$(( ((a 0xff00) 8 ) ))
c$((a 0xff00))
d$((a 8))
echo $b
echo $c
echo $d
# $ ./a.sh
# 1
# 256
# 1# 检查当前BMC是在主还是备启动的检查函数boot_source实现如下:
check_boot_source()
{# WDT1 is on page 646 of ast2500v16.pdf# and WDT2 is on page 649 of ast2500v16.pdf# get watch dog1 timeout status registerwdt1$(devmem 0x1e785010)# get watch dog2 timeout status registerwdt2$(devmem 0x1e785030)wdt1_timeout_cnt$(( ((wdt1 0xff00) 8) )) #取出高8位自动转为十进制wdt2_timeout_cnt$(( ((wdt2 0xff00) 8) ))wdt1_boot_code_source$(( ((wdt1 0x2) 1) )) #取出第1位不是第0wdt2_boot_code_source$(( ((wdt2 0x2) 1) ))boot_code_source0# Check both WDT1 and WDT2 to indicate the boot sourceif [ $wdt1_timeout_cnt -ge 1 ] [ $wdt1_boot_code_source -eq 1 ]; thenboot_code_source1elif [ $wdt2_timeout_cnt -ge 1 ] [ $wdt2_boot_code_source -eq 1 ]; thenboot_code_source1fiecho $boot_code_source
}bmc_boot_info() {wdt1$(devmem 0x1e785010)wdt2$(devmem 0x1e785030)wdt1_timeout_cnt$(( ((wdt1 0xff00) 8) ))wdt2_timeout_cnt$(( ((wdt2 0xff00) 8) ))boot_code_source$(check_boot_source)boot_sourceMaster Flashif [ $((boot_code_source)) -eq 1 ]; thenboot_sourceSlave Flashfiecho WDT1 Timeout Count: $wdt1_timeout_cntecho WDT2 Timeout Count: $wdt2_timeout_cntecho Current BMC Boot Code Source: $boot_source
}bmc_boot_from() {# Enable watchdog reset_system_after_timeout bit and WDT_enable_signal bit.# Refer to ast2500v16.pdf page 650th.boot_source0x00000013boot_code_source$(check_boot_source)if [ $1 master ]; thenif [ $((boot_code_source)) -eq 0 ]; thenecho Current boot source is master, no need to switch.return 0fi# Set bit_7 to 0 : Use default boot code whenever WDT reset.boot_source0x00000033elif [ $1 slave ]; thenif [ $((boot_code_source)) -eq 1 ]; thenecho Current boot source is slave, no need to switch.return 0fi# No matter BMC boot from any one of master and slave.# Set bit_7 to 1 : Use second boot code whenever WDT reset.# And the sencond boot code stands for the other boot source.boot_source0x000000b3fiecho BMC will switch to $1 after 10 seconds.../usr/local/bin/watch-dog stop# Clear WDT1 counter and boot code source statusdevmem 0x1e785014 w 0x77# Clear WDT2 counter and boot code source statusdevmem 0x1e785034 w 0x77# Set WDT time out 10s, 0x00989680 10,000,000 usdevmem 0x1e785024 32 0x00989680# WDT magic number to restart WDT counter to decrease.devmem 0x1e785028 32 0x4755devmem 0x1e78502c 32 $boot_source
}3.BMC喂狗实现sys/class/gpio/gpio1/value获取gpio1值 bmc喂狗gpio硬件管脚 bmc监听gpio中断硬件管脚
导出GPIO:echo $gpio_num /sys/class/gpio/exporteg: echo 1 /sys/class/gpio/export执行完以上命令后如果该gpio接口存在且未被占用则会出现如下目录/sys/class/gpio/gpio1设置方向:gpio的方向分为两类in和outin:表示该gpio用于输入。如该gpio连接一个按钮out:表示该gpio用于输出。如该gpio连接一个led灯指定为in模式的命令echo in /sys/class/gpio/gpio1/direction指定为out模式的命令如下echo out /sys/class/gpio/gpio1/direction //默认value为0echo low /sys/class/gpio/gpio1/direction //指定方向为out且value为0echo high /sys/class/gpio/gpio1/direction //指定方向为out且value为1设置高低:只用当方向为out模式时才能指定gpio接口的电压的高低。这个很容易理解因为如果是in模式的话它的电平高低取决于所连接外设的电平高低我们只能读取它的值不能更改它的值echo 1 /sys/class/gpio/gpio1/value //指定gpio1为高电平echo 0 /sys/class/gpio/gpio1/value //指定gpio1为低电平 3.1 watch-dog.h #ifndef SENSOR_MON__h
#define SENSOR_MON__h#include stdio.h
#include string.h
#include pthread.h
#include unistd.h
#include stdlib.h
#include signal.h
#include sys/time.h
#include time.h
#include sys/file.h
#include sys/stat.h
#include sys/types.h
#include errno.h
#include dirent.h
#include stdarg.h
#include syslog.h
#include openbmc/libgpio.h
#include fcntl.h
#include stdbool.h
#include poll.h
#include ctype.h
#include assert.h
#include libgen.h
#include linux/limits.h//#define GPIO_KICK_NUM 885
//#define GPIO_KICK_NAME GPIOL5
#define WDT_MASK_PATH /sys/bus/i2c/devices/82-000d/bmc_wdt_mask
#define GPIO_KICK_SHADOW BMC_CPLD_GPIO69_WDOtypedef enum {WD_FUNC_START, //0WD_FUNC_STOP,WD_FUNC_KICK,WD_FUNC_UNKNOWN,
} wd_func;typedef enum {MASK_ENABLE 1,MASK_DISABLE 0,
} wd_mask;// 如下LOG替换syslog , syslog像printf定义在syslog.h, 打印在/var/log/message
#define LOG(mode,format, ...) syslog(mode, format, __VA_ARGS__)int bmc_wd_set(wd_mask value);
void feed_dog_func();#endifwatch-dog.c
#include watch-dog.hint bmc_wd_set(wd_mask value){ // bmc设置cpld寄存器控制wtd芯片是外置芯片不是bmc芯片内置的开关FILE* pFile fopen(WDT_MASK_PATH, w);char regvalue[4] {0};int ret 0;if(value MASK_DISABLE){ // 0sprintf(regvalue,0x0);}else if(value MASK_ENABLE){sprintf(regvalue,0x1);}ret fwrite(regvalue, sizeof(regvalue) , 1, pFile ); //ret为次数即fwrite中的1if(ret1){fflush(pFile);ret 0;}else{ret -1;}fclose(pFile);return ret;
}void feed_dog_func() // bmc通过gpio的0.5s高低电平来喂狗
{int ret 0;struct timespec n_sleep;n_sleep.tv_sec 0; //secondes, integer part sleep duration // 整数n_sleep.tv_nsec 5e8L; //nanoseconds, decimal part sleep duration // 小数 0.5s上行整数0这行小数5gpio_desc_t* desc gpio_open_by_shadow(GPIO_KICK_SHADOW); // libgpio-ctrl.so中的接口if (!desc) {syslog(LOG_INFO ,gpio_open_by_shadow fail\n);return ;}ret gpio_set_direction(desc, GPIO_DIRECTION_OUT);if (ret -1){syslog(LOG_ERR ,gpio_change_direction err \n);gpio_close(desc);return ;}ret gpio_set_edge(desc, GPIO_EDGE_NONE);if (ret -1){syslog(LOG_ERR ,gpio_change_edge err \n);gpio_close(desc);return ;}
//BMC启动时喂狗硬件gpio管脚每隔500ms翻转一次高低电平并关闭中断MASK如下
//cmm cpld 0X71 地址 bit0 是中断MASK 为1时MASK使能即看门狗关闭为0时MASK失效即看门狗打开
//i2cset -f -y 82 0xd 0x71 0xfe 做成bmc_wdt_mask节点retbmc_wd_set(MASK_DISABLE); // 0开wtdif(ret 0){syslog(LOG_INFO ,bmc_wd_set OK\n);}else{syslog(LOG_ERR ,bmc_wd_set Fail\n);gpio_close(desc);return;}while(1){gpio_set_value(desc,GPIO_VALUE_HIGH);nanosleep(n_sleep, NULL); // 0.5s 高电平gpio_set_value(desc,GPIO_VALUE_LOW);nanosleep(n_sleep, NULL); // 0.5s 低电平}gpio_close(desc);return ;
}main.c
#include watch-dog.hint func_start()
{int ret 0;retbmc_wd_set(MASK_DISABLE); //mask和disable都是否定if(ret 0){syslog(LOG_INFO ,func_start OK\n);}else{syslog(LOG_ERR ,func_start Fail\n);return -1;}return 0;
}int func_stop()
{int ret 0;retbmc_wd_set(MASK_ENABLE);if(ret 0){syslog(LOG_INFO ,func_stop OK\n);}else{syslog(LOG_ERR ,func_stop Fail\n);return -1;}return 0;
}void usage(void)
{fprintf(stderr, usage: watch-dog start/stop/kick \n);exit (1);
}int func_kick()
{int rc,ret,pid_file;int pid_value;char piddata[12];char file_path[60];pthread_t tid_feed;ret snprintf(file_path, sizeof(file_path), /var/run/watch_dog.pid); // /var/run/a 也可以记录当前进程pid号if ((ret 0) || (ret sizeof(file_path))) {syslog(LOG_ERR ,watch_dog:too long for lockfile\n);return -1;}pid_file open(file_path, O_CREAT | O_RDWR, 0666);if (pid_file 0) {syslog(LOG_ERR ,watch_dog: failed to acquire lock\n);exit(1);}else{pid_valuegetpid();snprintf(piddata, sizeof(piddata), %d\n, pid_value);retwrite(pid_file, piddata, sizeof(piddata)); //先open再writeif(ret 0) {syslog(LOG_ERR ,watch_dog: write pid err\n);}}rc flock(pid_file, LOCK_EX | LOCK_NB); // Linux文件锁flock: 检测进程是否已经存在if(rc){if(EWOULDBLOCK errno){syslog(LOG_ERR ,Another watch_dog instance is running...\n);exit(1);}}syslog(LOG_INFO ,watch_dog: daemon started\n);pthread_create(tid_feed,NULL,(void *)feed_dog_func,NULL); //一个pthread_create只创建一个线程pthread_join(tid_feed,NULL);if (pid_file 0) {unlink(file_path); //#includeunistd.h , unlink删除文件}syslog(LOG_INFO ,watch_dog: daemon end\n);return 0;
}wd_func wd_func_judge(char * desc)
{if (!strcmp(desc, start)){ // strcmp相同返回0if(1)执行shell中if(0)执行return WD_FUNC_START;}else if (!strcmp(desc, stop)){return WD_FUNC_STOP;}else if (!strcmp(desc, kick)){return WD_FUNC_KICK;}return WD_FUNC_UNKNOWN;
}int main(int argc, char* argv[])
{wd_func wd_func_sel WD_FUNC_UNKNOWN;if (argc ! 2) {usage();}wd_func_sel wd_func_judge(argv[1]);if ( wd_func_sel WD_FUNC_UNKNOWN ){usage();}switch (wd_func_sel){case WD_FUNC_START :func_start();break;case WD_FUNC_STOP :func_stop();break;case WD_FUNC_KICK :func_kick();break;default :break;}return 0;
}Makefile
#
all: watch-dog
SRC $(wildcard ./*.c)
CFLAGS -Wall -Werror -D _XOPEN_SOURCE -pthread -lm -stdc99watch-dog: $(SRC)$(CC) $(CFLAGS) -o $ $^ $(LDFLAGS).PHONY: cleanclean:rm -rf *.o watch-dogrun-watch-dog.sh
exec /usr/local/bin/watch-dog kicksetup-watch-dog.sh
WDTFUNC/usr/local/bin/watch-dog
# /etc/init.d/setup-watch-dog.sh: start and stop the watch-dog
export PATH${PATH:$PATH:}/usr/sbin:/sbin:/usr/local/bin
case $1 instart)echo -n Starting watch dog kick daemon...runsv /etc/sv/watch-dog /dev/null 21 # runsv找/etc/sv/watch-dog/run文件运行echo done.;;stop)echo -n Stopping watch dog daemon...$WDTFUNC stop /dev/null 21 echo done.;;*)echo Usage: /etc/init.d/setup-watch-dog.sh {start|stop}exit 1;;
esac
exit 0watch-dog_0.1.bb
SUMMARY watch dog Daemon
DESCRIPTION Daemon for watch dog
SECTION base
PR r1
LICENSE GPLv2
LIC_FILES_CHKSUM file://COPYING;md5eb723b61539feef013de476e68b5c50a
SRC_URI file://COPYING \file://main.c \file://watch-dog.c \file://watch-dog.h \file://Makefile \file://setup-watch-dog.sh \file://run-watch-dog.sh \
S ${WORKDIR}
binfiles watch-dog \
pkgdir watch-dog
LDFLAGS -lgpio-ctrl
DEPENDS libgpio-ctrl update-rc.d-native
RDEPENDS_${PN} libgpio-ctrl bashinstall_sysv() {install -d ${D}${sysconfdir}/init.dinstall -d ${D}${sysconfdir}/rcS.dinstall -d ${D}${sysconfdir}/svinstall -d ${D}${sysconfdir}/sv/watch-doginstall -d ${D}${sysconfdir}/watch-doginstall -m 755 setup-watch-dog.sh ${D}${sysconfdir}/init.d/setup-watch-dog.shinstall -m 755 run-watch-dog.sh ${D}${sysconfdir}/sv/watch-dog/run #将run-watch-dog.sh复制到/etc/sv/watch-dog/run文件里update-rc.d -r ${D} setup-watch-dog.sh defaults 93 5 #defaults 开机自动执行setup-watch-dog.sh start reboot自动执行setup-watch-dog.sh stop
}do_install() {dst${D}/usr/local/fbpackages/${pkgdir}bin${D}/usr/local/bininstall -d $dstinstall -d $binfor f in ${binfiles}; doinstall -m 755 $f ${dst}/$fln -snf ../fbpackages/${pkgdir}/$f ${bin}/$fdoneinstall_sysv
}FBPACKAGEDIR ${prefix}/local/fbpackages
FILES_${PN} ${FBPACKAGEDIR}/watch-dog ${prefix}/local/bin ${sysconfdir}4.post code // obmc-pal.c
/* IPMI SEL: System Firmware Error string table */
struct system_fw_progress {uint8_t EventData1;char DecodeString[128];
};struct system_fw_progress system_fw_error[] {{0x00, Unspecified}, // 一个{}就是一个system_fw_progress结构体129字节{0x01, No system memory is physically installed in the system},{0x02, No usable system memory, all installed memory has experienced an unrecoverable failure}, // 88字节{0x03, Unrecoverable hard-disk/ATAPI/IDE device failure},{0x04, Unrecoverable system-board failure},{0x05, Unrecoverable diskette subsystem failure},{0x06, Unrecoverable hard-disk controller failure},{0x07, Unrecoverable PS/2 or USB keyboard failure},{0x08, Removable boot media not found},{0x09, Unrecoverable video controller failure},{0x0A, No video device detected},{0x0B, Firmware (BIOS) ROM corruption detected},{0x0C, CPU voltage mismatch},{0x0D, CPU speed matching failure},
};struct system_fw_progress system_fw_hang_or_progress[] {{0x00, Unspecified},{0x01, Memory initialization},{0x02, Hard-disk initialization},{0x03, Secondary processor(s) initialization},{0x04, User authentication},{0x05, User-initiated system setup},{0x06, USB resource configuration},{0x07, PCI resource configuration},{0x08, Option ROM initialization},{0x09, Video initialization},{0x0A, Cache initialization},{0x0B, SM Bus initialization},{0x0C, Keyboard controller initialization},{0x0D, Embedded controller/management controller initialization},{0x0E, Docking station attachment},{0x0F, Enabling docking station},{0x10, Docking station ejection},{0x11, Disabling docking station},{0x12, Calling operating system wake-up vector},{0x13, Starting operating system boot process, e.g. calling Int 19h},{0x14, Baseboard or motherboard initialization},{0x15, reserved},{0x16, Floppy initialization},{0x17, Keyboard test},{0x18, Pointing device test},{0x19, Primary processor initialization},
};uint8_t *ed event_data[3];char temp_log[512] {0};char add_sol_log_com[512] logger -p local3.info ;case POST_ERROR:if (((ed[0] 6) 0x03) 0x3) { // table29 eventdata1第6和7位为11switch (ed[0] 0xF) { // table29取eventdata1低四位case 0x00: // sensor offsetstrcat(error_log, System Firmware Error (POST Error), IPMI Post Code); // 50字节if (ed[1] (sizeof(system_fw_error) / sizeof(system_fw_error[0]))) { // 13*129/1290x0dsprintf(temp_log, , %s, system_fw_error[ed[1]].DecodeString); // 88字节ed[1]即eventdata2} else {sprintf(temp_log, , reserved);}break;case 0x01:strcat(error_log, System Firmware Hang, IPMI Post Code);case 0x02:if (strcmp(error_log, ) 0) {strcat(error_log, System Firmware Progress, IPMI Post Code);}if (ed[1] (sizeof(system_fw_hang_or_progress) / sizeof(system_fw_hang_or_progress[0]))) {sprintf(temp_log, , %s, system_fw_hang_or_progress[ed[1]].DecodeString);} else {sprintf(temp_log, , reserved);}break;default:sprintf(temp_log, Unknown);break;}strcat(error_log, temp_log); //138// send post code sel to sol logsprintf(temp_log, %s , error_log);strcat(add_sol_log_com, temp_log);system(add_sol_log_com);break;
