<< Older BIOS image with forcing secondary BIOS boot >> root@sonic:~# journalctl -a | grep reboot Jan 09 11:58:17 sonic cron[431]: (CRON) INFO (Running @reboot jobs) Jan 09 11:58:17 sonic systemd[1]: Starting LSB: Execute the kexec -e command to reboot system... Jan 09 11:58:17 sonic systemd[1]: Started LSB: Execute the kexec -e command to reboot system. Jan 09 11:58:18 sonic track_reboot_reason.sh[284]: Secondary BIOS booted Jan 09 11:58:18 sonic systemd[1]: Started Read Dell S6100 reboot cause. Jan 09 11:58:19 sonic process-reboot-cause[680]: Starting up... Jan 09 11:58:19 sonic process-reboot-cause[680]: Previous reboot cause: Power Loss root@sonic:~# << Latest BIOS image with forcing secondary BIOS boot >> root@sonic:~# journalctl -a | grep reboot Jan 09 12:06:46 sonic systemd[1]: Starting Read Dell S6100 reboot cause... Jan 09 12:06:47 sonic cron[438]: (CRON) INFO (Running @reboot jobs) Jan 09 12:06:47 sonic systemd[1]: Starting LSB: Execute the kexec -e command to reboot system... Jan 09 12:06:47 sonic systemd[1]: Started LSB: Execute the kexec -e command to reboot system. Jan 09 12:06:48 sonic systemd[1]: Started Read Dell S6100 reboot cause. Jan 09 12:06:48 sonic process-reboot-cause[950]: Starting up... Jan 09 12:06:49 sonic process-reboot-cause[950]: Previous reboot cause: User issued 'reboot' command [User: admin, Time: Thu Jan 9 12:00:22 UTC 2020] root@sonic:~# root@sonic:~# cat /host/reboot-cause/platform/bios_minor_version 3.25.0.2-6d root@sonic:~# << Watchdog timeout >> BIOS Boot Selector for S6100 Primary BIOS Version 3.25.0.2-6d SMF Version: MSS 2.1, FPGA 1.1 Last POR=0x11, Reset Cause=0x33 POST Configuration CPU Signature 406D8 CPU FamilyID=6, Model=4D, SteppingId=8, Processor=0 Microcode Revision 12A Platform ID: 0x10041A49 PMG_CST_CFG_CTL: 0x40006 BBL_CR_CTL3: 0x7E2801FF Misc EN: 0x840081 Gen PM Con1: 0x203808 Therm Status: 0x884A0000 POST Control=0xEA000101, Status=0xE6000000 Last boot POST Status=0xDF00 BIOS initializations... CPGC Memtest ................................ PASS POST: RTC Battery OK at last cold boot RTC date 1/9/2020 12:08:23 POST SPD test ............................... PASS POST Lower DRAM Memory test .... Perf cnt (curr,fixed): 0x1FE929170,0x3FD256280 ... ... << Forcing secondary bios to boot >> ... BIOS (Dell, Inc.) Boot Selector S6100 3.25.0.3 4 IO card / 2 port sfp+ mgmt Booting Backup BIOS SMF Version 0x11: Last POR=0x11, Reset=0x55 POST Configuration CPU Signature 406D8 CPU FamilyID=6, Model=4D, SteppingId=8, Processor=0 Microcode Revision 125 Platform ID: 0x10041A49 PMG_CST_CFG_CTL: 0x40006 BBL_CR_CTL3: 0x7E2801FF Misc EN: 0x840081 Gen PM Con1: 0x3008 Therm Status: 0x884C0000 POST Control=0xEA000101, Status=0xE600DF00 BIOS initializations... root@sonic:~# journalctl -a | grep reboot Jan 09 12:12:13 sonic systemd[1]: Starting LSB: Execute the kexec -e command to reboot system... Jan 09 12:12:13 sonic cron[458]: (CRON) INFO (Running @reboot jobs) Jan 09 12:12:14 sonic systemd[1]: Started LSB: Execute the kexec -e command to reboot system. Jan 09 12:12:14 sonic track_reboot_reason.sh[286]: Secondary BIOS booted <<< Notified secondary bios booted Jan 09 12:12:15 sonic systemd[1]: Started Read Dell S6100 reboot cause. Jan 09 12:12:15 sonic process-reboot-cause[1048]: Starting up... Jan 09 12:12:16 sonic process-reboot-cause[1048]: Previous reboot cause: Watchdog root@sonic:~# root@sonic:~# show reboot-cause Watchdog root@sonic:~# python reset.py ('Watchdog', None) root@sonic:~# root@sonic:~# cat /host/reboot-cause/platform/reset_reason <<< To hold BIOS resets values First reset - 33 Second reset - 0 Third reset - 0 Fourth reset - 0 root@sonic:~#