I use watchdog to reset the system:
echo 1 > /dev/watchdog
[ 36.166011] watchdog watchdog0: watchdog did not stop!
after 120 second, Linux reset:
[0000.204] [TegraBoot] (version 00.00.2014.50-mobile-d44d4bf0)
[0000.209] Processing in cold boot mode Bootloader 2
[0000.214] A02 Bootrom Patch rev = 255
[0000.217] Power-up reason: ap watchdog timeout
[0000.222] No Battery Present
[0000.224] RamCode = 0
[0000.227] Platform has Ddr4 type ram
[0000.230] max77620 disabling SD1 Remote Sense
[0000.235] Setting Ddr voltage to 1125mv
[0000.239] Serial Number of Pmic Max77663: 0x81fe5
[0000.246] Entering ramdump check
[0000.249] Get RamDumpCarveOut = 0xff23f000
[0000.254] RamDumpCarveOut=0xff23f000, RamDumperFlag=0x0
[0000.259] Last reboot was clean, booting normally!
[0000.264] Sdram initialization is successful
[0000.268] SecureOs Carveout Base=0xff800000 Size=0x00800000
[0000.273] GSC1 Carveout Base=0xff700000 Size=0x00100000
[0000.279] GSC2 Carveout Base=0xff600000 Size=0x00100000
[0000.284] GSC3 Carveout Base=0xff500000 Size=0x00100000
[0000.289] GSC4 Carveout Base=0xff400000 Size=0x00100000
[0000.295] GSC5 Carveout Base=0xff300000 Size=0x00100000
[0000.300] BpmpFw Carveout Base=0xff2c0000 Size=0x00040000
[0000.306] Lp0 Carveout Base=0xff2bf000 Size=0x00001000
[0000.325] RamDump Carveout Base=0xff23f000 Size=0x00080000
[0000.330] Platform-DebugCarveout: 0
[0000.334] Nck Carveout Base=0xff03f000 Size=0x00200000
[0000.339] Non secure mode, and RB not enabled.
[0000.380] Using GPT Primary to query partitions
[0000.385] Loading Tboot-CPU binary
[0000.434] Verifying bootloader in OdmNonSecureSBK mode
[0000.445] Bootloader load address is 0xa0000000, entry address is 0xa0000258
[0000.452] Bootloader downloaded successfully.
[0000.456] Downloaded Tboot-CPU binary to 0xa0000258
[0000.462] MAX77620_GPIO1 Configured.
[0000.465] MAX77620_GPIO5 Configured.
[0000.469] CPU power rail is up
[0000.472] CPU clock enabled
[0000.477] Performing RAM repair
[0000.480] Updating A64 Warmreset Address to 0xa00002e9
[0000.508] Bootloader DTB Load Address: 0x83000000
[0000.536] Kernel DTB Load Address: 0x83100000
[0000.542] Loading cboot binary
[0000.636] Verifying bootloader in OdmNonSecureSBK mode
[0000.679] Bootloader load address is 0x92c00000, entry address is 0x92c00258
[0000.687] Bootloader downloaded successfully.
[0000.691] GPT: Partition NOT found !
[0000.694] Find Partition via GPT Failed
[0000.698] Find Partition via PT Failed
[0000.702] function NvTbootGetBinaryOffsets: 0x1 error
[0000.707] Error in NvTbootLoadBinary: 0x1 !
[0000.711] Next binary entry address: 0x92c00258
[0000.715] BoardId: 2180
[0000.723] dram memory type is 3
[0000.727] WB0 init successful
[0000.753] Bpmp FW successfully loaded
[0000.756] Set NvDecSticky Bits
[0000.760] GSC1 address : ff700000
[0000.764] GSC2 address ff63fffc value c0edbbcc
[0000.770] GSC2 address : ff600000
[0000.774] GSC3 address : ff500000
[0000.778] GSC4 address : ff400000
[0000.783] GSC5 address : ff300000
[0000.786] GSC MC Settings done
[0000.790] TOS plaintext Image length 28752
[0000.794] Monitor size 28752
[0000.797] OS size 0
[0000.800] *** Secure OS image signature not verified ***
[0000.805] Loading and Validation of Secure OS Successful
[0000.810] NvTbootPackSdramParams: start.
[0000.817] NvTbootPackSdramParams: done.
[0000.820] Tegraboot started after 183718 us
[0000.825] Basic modules init took 313405 us
[0000.829] Sec Bootdevice Read Time = 216 ms, Read Size = 9476 KB
[0000.835] Sec Bootdevice Write Time = -1940251271 ms, Write Size = -68719477 KB
[0000.842] Next stage binary read took 23855 us
[0000.847] Carveout took 214227 us
[0000.850] CPU initialization took 105475 us
[0000.854] Total time taken by TegraBoot 656962 us
[0000.859] Starting CPU & Halting co-processor
but stopped here forever, please explain it, thanks!