Antminer z15 does not start, it works in a constant reboot mode.

Antminer z15 does not start, it works in a constant reboot mode. Help me understand what the problem is, I attach the log. Please tell me what can be done.

Booting Linux on physical CPU 0x0
Linux version 4.6.0-xilinx-g0387054-dirty (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #45 SMP PREEMPT Wed Jun 19 15:03:51 CST 2019
CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: Xilinx Zynq
cma: Reserved 16 MiB at 0x0e000000
Memory policy: Data cache writealloc
On node 0 totalpages: 61440
free_area_init_node: node 0, pgdat c0b3c280, node_mem_map cde10000
  Normal zone: 480 pages used for memmap
  Normal zone: 0 pages reserved
  Normal zone: 61440 pages, LIFO batch:15
percpu: Embedded 12 pages/cpu @cddf1000 s20032 r8192 d20928 u49152
pcpu-alloc: s20032 r8192 d20928 u49152 alloc=12*4096
pcpu-alloc: [0] 0 [0] 1 
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 60960
Kernel command line: mem=240M console=ttyPS0,115200 ramdisk_size=33554432 root=/dev/ram rw earlyprintk
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 203836K/245760K available (6348K kernel code, 243K rwdata, 1928K rodata, 1024K init, 233K bss, 25540K reserved, 16384K cma-reserved, 0K highmem)
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0xcf800000 - 0xff800000   ( 768 MB)
    lowmem  : 0xc0000000 - 0xcf000000   ( 240 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc0915150   (9269 kB)
      .init : 0xc0a00000 - 0xc0b00000   (1024 kB)
      .data : 0xc0b00000 - 0xc0b3cfe0   ( 244 kB)
       .bss : 0xc0b3cfe0 - 0xc0b77428   ( 234 kB)
Preemptible hierarchical RCU implementation.
	Build-time adjustment of leaf fanout to 32.
	RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=2
NR_IRQS:16 nr_irqs:16 16
efuse mapped to cf800000
ps7-slcr mapped to cf802000
L2C: platform modifies aux control register: 0x72360000 -> 0x72760000
L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000
L2C-310 erratum 769419 enabled
L2C-310 enabling early BRESP for Cortex-A9
L2C-310 full line of zeros enabled for Cortex-A9
L2C-310 ID prefetch enabled, offset 1 lines
L2C-310 dynamic clock gating enabled, standby mode enabled
L2C-310 cache controller enabled, 8 ways, 512 kB
L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76760001
zynq_clock_init: clkc starts at cf802100
Zynq clock init
sched_clock: 64 bits at 333MHz, resolution 3ns, wraps every 4398046511103ns
clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0x4ce07af025, max_idle_ns: 440795209040 ns
Switching to timer-based delay loop, resolution 3ns
clocksource: ttc_clocksource: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 537538477 ns
ps7-ttc #0 at cf80a000, irq=18
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 666.66 BogoMIPS (lpj=3333333)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x100000 - 0x100058
CPU1: failed to boot: -1
Brought up 1 CPUs
SMP: Total of 1 processors activated (666.66 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
cpuidle: using governor menu
hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 4 bytes.
zynq-ocm f800c000.ps7-ocmc: ZYNQ OCM pool: 256 KiB @ 0xcf880000
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
media: Linux media interface: v0.10
Linux video capture interface: v2.00
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
EDAC MC: Ver: 3.0.0
Advanced Linux Sound Architecture Driver Initialized.
clocksource: Switched to clocksource arm_global_timer
NET: Registered protocol family 2
TCP established hash table entries: 2048 (order: 1, 8192 bytes)
TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
UDP hash table entries: 256 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
PCI: CLS 0 bytes, default 64
Trying to unpack rootfs image as initramfs...
rootfs image is not initramfs (no cpio magic); looks like an initrd
Freeing initrd memory: 12476K (cced3000 - cdb02000)
hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
futex hash table entries: 512 (order: 3, 32768 bytes)
workingset: timestamp_bits=28 max_order=16 bucket_order=0
jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
dma-pl330 f8003000.ps7-dma: Loaded driver for PL330 DMAC-241330
dma-pl330 f8003000.ps7-dma: 	DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
e0000000.serial: ttyPS0 at MMIO 0xe0000000 (irq = 158, base_baud = 6249999) is a xuartps
console [ttyPS0] enabled
xdevcfg f8007000.ps7-dev-cfg: ioremap 0xf8007000 to cf86e000
[drm] Initialized drm 1.1.0 20060810
brd: module loaded
loop: module loaded
CAN device driver interface
gpiod_set_value: invalid GPIO
libphy: MACB_mii_bus: probed
macb e000b000.ethernet eth0: Cadence GEM rev 0x00020118 at 0xe000b000 irq 31 (00:0a:35:00:00:00)
Generic PHY e000b000.etherne:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=e000b000.etherne:00, irq=-1)
e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
usbcore: registered new interface driver usb-storage
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
Xilinx Zynq CpuIdle Driver started
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: SDHCI controller on e0100000.ps7-sdio [e0100000.ps7-sdio] using ADMA
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
nand: Micron MT29F2G08ABAEAWP
nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
nand: NAND_ECC_HW
nand: NAND_ECC_HW_SYNDROME
mtd->writesize = 2048
ecc->strength = 1
ecc->size = 2048
mtd->writesize = 2048
chip->ecc_strength_ds = 4
chip->ecc_step_ds = 512
nand: WARNING: pl35x-nand: the ECC used on your system is too weak compared to the one required by the NAND chip
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
5 ofpart partitions found on MTD device pl35x-nand
Creating 5 MTD partitions on "pl35x-nand":
0x000000000000-0x000002800000 : "BOOT.bin-env-dts-kernel"
0x000002800000-0x000004800000 : "ramfs"
0x000004800000-0x000005000000 : "configs"
0x000005000000-0x000006000000 : "reserve"
0x000006000000-0x000008000000 : "ramfs-bak"
nf_conntrack version 0.5.0 (3635 buckets, 14540 max)
ip_tables: (C) 2000-2006 Netfilter Core Team
NET: Registered protocol family 10
ip6_tables: (C) 2000-2006 Netfilter Core Team
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
can: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
can: netlink gateway (rev 20130117) max_hops=1
zynq_pm_ioremap: no compatible node found for 'xlnx,zynq-ddrc-a05'
zynq_pm_late_init: Unable to map DDRC IO memory.
Registering SWP/SWPB emulation handler
hctosys: unable to open rtc device (rtc0)
ALSA device list:
  No soundcards found.
RAMDISK: gzip image found at block 0
EXT4-fs (ram0): couldn't mount as ext3 due to feature incompatibilities
EXT4-fs (ram0): mounted filesystem without journal. Opts: (null)
VFS: Mounted root (ext4 filesystem) on device 1:0.
devtmpfs: mounted
Freeing unused kernel memory: 1024K (c0a00000 - c0b00000)
EXT4-fs (ram0): re-mounted. Opts: block_validity,delalloc,barrier,user_xattr
random: dd urandom read with 0 bits of entropy available
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
macb e000b000.ethernet eth0: unable to generate target frequency: 25000000 Hz
macb e000b000.ethernet eth0: link up (100/Full)
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
In axi fpga driver!
request_mem_region OK!
AXI fpga dev virtual address is 0xcf9cc000
*base_vir_addr = 0xb031
In fpga mem driver!
request_mem_region OK!
fpga mem virtual address is 0xd2000000
Apr 22 14:20:54 (none) local0.err cgminer: Miner compile time: Fri Jul  3 11:39:06 CST 2020 type: Antminer Z15
Apr 22 14:20:54 (none) local0.warn cgminer: Started cgminer 4.9.0
Apr 22 14:20:54 (none) local0.notice cgminer[971]: z15 init...
Apr 22 14:20:54 (none) local0.notice cgminer[971]: httpListenThread start ret=0
Apr 22 14:20:56 (none) local0.notice cgminer[971]: FPGA version: B031
Apr 22 14:20:56 (none) local0.notice cgminer[971]: No 2 Fan find, check again
Apr 22 14:20:58 (none) local0.notice cgminer[971]: No 2 Fan find, check again
Apr 22 14:20:59 (none) local0.notice cgminer[971]: No 2 Fan find, check again
Apr 22 14:21:00 (none) local0.notice cgminer[971]: fan-num 2 fan-map 12
Apr 22 14:21:00 (none) local0.notice cgminer[971]: check_chain
Apr 22 14:21:00 (none) local0.notice cgminer[971]: Chain 0 existed!
Apr 22 14:21:00 (none) local0.notice cgminer[971]: Chain 1 existed!
Apr 22 14:21:00 (none) local0.notice cgminer[971]: Chain 2 existed!
Apr 22 14:21:00 (none) local0.notice cgminer[971]: chain0 every_chain_reset_PIC16F1704_pic_new
Apr 22 14:21:01 (none) local0.notice cgminer[971]: reset_PIC16F1704_pic_new ok
Apr 22 14:21:01 (none) local0.notice cgminer[971]: chain1 every_chain_reset_PIC16F1704_pic_new
Apr 22 14:21:03 (none) local0.notice cgminer[971]: reset_PIC16F1704_pic_new ok
Apr 22 14:21:03 (none) local0.notice cgminer[971]: chain2 every_chain_reset_PIC16F1704_pic_new
Apr 22 14:21:04 (none) local0.notice cgminer[971]: reset_PIC16F1704_pic_new ok
Apr 22 14:21:04 (none) local0.notice cgminer[971]: chain0 every_chain_jump_from_loader_to_app_PIC16F1704_new
Apr 22 14:21:05 (none) local0.notice cgminer[971]: jump_from_loader_to_app_PIC16F1704_new ok
Apr 22 14:21:05 (none) local0.notice cgminer[971]: chain1 every_chain_jump_from_loader_to_app_PIC16F1704_new
Apr 22 14:21:05 (none) local0.notice cgminer[971]: jump_from_loader_to_app_PIC16F1704_new ok
Apr 22 14:21:05 (none) local0.notice cgminer[971]: chain2 every_chain_jump_from_loader_to_app_PIC16F1704_new
Apr 22 14:21:06 (none) local0.notice cgminer[971]: jump_from_loader_to_app_PIC16F1704_new ok
Apr 22 14:21:07 (none) local0.notice cgminer[971]: reset_all_hash_board_low 4386
Apr 22 14:21:07 (none) local0.notice cgminer[971]: pic_heart_beat_func_new
Apr 22 14:21:08 (none) local0.notice cgminer[971]: every_chain_disable_PIC16F1704_dc_dc_new
Apr 22 14:21:08 (none) local0.notice cgminer[971]: disable_PIC16F1704_dc_dc_new ok
Apr 22 14:21:08 (none) local0.notice cgminer[971]: disable_PIC16F1704_dc_dc_new ok
Apr 22 14:21:08 (none) local0.notice cgminer[971]: disable_PIC16F1704_dc_dc_new ok
Apr 22 14:21:09 (none) local0.notice cgminer[971]: every_chain_enable_PIC16F1704_dc_dc_new
Apr 22 14:21:09 (none) local0.notice cgminer[971]: enable_PIC16F1704_dc_dc_new ok
Apr 22 14:21:10 (none) local0.notice cgminer[971]: enable_PIC16F1704_dc_dc_new ok
Apr 22 14:21:10 (none) local0.notice cgminer[971]: enable_PIC16F1704_dc_dc_new ok
Apr 22 14:21:10 (none) local0.notice cgminer[971]: reset_all_hash_board_high 4392
Apr 22 14:21:10 (none) local0.notice cgminer[971]: tty_init
Apr 22 14:21:10 (none) local0.notice cgminer[971]: tty_init_chain chainid = 0
Apr 22 14:21:10 (none) local0.err cgminer[971]: create rx read thread for chain 0 ok
Apr 22 14:21:10 (none) local0.notice cgminer[971]: Start A New Asic Response.Chain Id:[0]
Apr 22 14:21:11 (none) local0.err cgminer[971]: create tx read thread for chain 0 ok
Apr 22 14:21:11 (none) local0.notice cgminer[971]: open device over
Apr 22 14:21:11 (none) local0.notice cgminer[971]: tty_init_chain chainid = 1
Apr 22 14:21:11 (none) local0.err cgminer[971]: create rx read thread for chain 1 ok
Apr 22 14:21:11 (none) local0.notice cgminer[971]: Start A New Asic Response.Chain Id:[1]
Apr 22 14:21:11 (none) local0.err cgminer[971]: create tx read thread for chain 1 ok
Apr 22 14:21:11 (none) local0.notice cgminer[971]: open device over
Apr 22 14:21:11 (none) local0.notice cgminer[971]: tty_init_chain chainid = 2
Apr 22 14:21:11 (none) local0.err cgminer[971]: create rx read thread for chain 2 ok
Apr 22 14:21:11 (none) local0.notice cgminer[971]: Start A New Asic Response.Chain Id:[2]
Apr 22 14:21:11 (none) local0.err cgminer[971]: create tx read thread for chain 2 ok
Apr 22 14:21:11 (none) local0.notice cgminer[971]: open device over
Apr 22 14:21:15 (none) local0.notice cgminer[971]: calculate_address_interval:addrInterval = 64
Apr 22 14:21:17 (none) local0.notice cgminer[971]: check_every_chain_asic_number
Apr 22 14:21:19 (none) local0.notice cgminer[971]: check_asic_reg: chain J0 has 3 ASIC
Apr 22 14:21:21 (none) local0.notice cgminer[971]: check_asic_reg: chain J1 has 3 ASIC
Apr 22 14:21:22 (none) local0.notice cgminer[971]: check_asic_reg: chain J2 has 3 ASIC
Apr 22 14:21:23 (none) local0.notice cgminer[971]: chain0 pic version 04
Apr 22 14:21:24 (none) local0.notice cgminer[971]: chain1 pic version 04
Apr 22 14:21:24 (none) local0.notice cgminer[971]: chain2 pic version 04
Apr 22 14:21:24 (none) local0.notice cgminer[971]: start listen on 6060 ...
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain0 asic0 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain0 asic1 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain0 asic2 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain1 asic0 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain1 asic1 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain1 asic2 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain2 asic0 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain2 asic1 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: pic read chain2 asic2 freq 815
Apr 22 14:21:25 (none) local0.notice cgminer[971]: 1 Goto turbo mode
Apr 22 14:21:26 (none) local0.notice cgminer[971]: set_ticket_mask_chain chainID0 ticket_mask = 0x00000010
Apr 22 14:21:26 (none) local0.notice cgminer[971]: set_ticket_mask_chain chainID1 ticket_mask = 0x00000010
Apr 22 14:21:26 (none) local0.notice cgminer[971]: set_ticket_mask_chain chainID2 ticket_mask = 0x00000010
Apr 22 14:21:26 (none) local0.notice cgminer[971]: software_set_address_chain chainID0 asics 3 addrInterval 64
Apr 22 14:21:26 (none) local0.notice cgminer[971]: software_set_address_chain chainID1 asics 3 addrInterval 64
Apr 22 14:21:26 (none) local0.notice cgminer[971]: software_set_address_chain chainID2 asics 3 addrInterval 64
Apr 22 14:21:27 (none) local0.notice cgminer[971]: enable_read_temperature_from_asic_chain: reg_value=0x07006061 chainid 0
Apr 22 14:21:27 (none) local0.notice cgminer[971]: enable_read_temperature_from_asic_chain: reg_value=0x07006061 chainid 1
Apr 22 14:21:27 (none) local0.notice cgminer[971]: enable_read_temperature_from_asic_chain: reg_value=0x07006061 chainid 2
Apr 22 14:21:28 (none) local0.notice cgminer[971]: chainid0 set_analog_mux_control_chain: analog mux = 00000000
Apr 22 14:21:28 (none) local0.notice cgminer[971]: chainid1 set_analog_mux_control_chain: analog mux = 00000000
Apr 22 14:21:28 (none) local0.notice cgminer[971]: chainid2 set_analog_mux_control_chain: analog mux = 00000000
Apr 22 14:21:28 (none) local0.notice cgminer[971]: dev.timeout = 100000000 us
Apr 22 14:21:28 (none) local0.notice cgminer[971]: bitmain_ZCASH_init: fan_eft : 0  fan_pwm : 50
Apr 22 14:21:31 (none) local0.notice cgminer[971]: bitmain_ZCASH_init done
Apr 22 14:21:31 (none) local0.err cgminer[971]: cgminer time error total_secs = 1650637291.476206 last_total_secs = 1.000000
Apr 22 14:21:32 (none) local0.info cgminer[971]: Pool 2 extranonce set to 1b680000
Apr 22 14:21:32 (none) local0.info cgminer[971]: Pool 0 extranonce set to da630000
Apr 22 14:21:32 (none) local0.info cgminer[971]: Pool 1 extranonce set to 236c0000
Apr 22 14:21:32 (none) local0.notice cgminer[971]: stime.tv_sec 1650637292, block_ntime 1650637289
Apr 22 14:21:33 (none) local0.warn cgminer[971]: Switching to pool 0 stratum+tcp://stratum-zec.antpool.com:8899
Apr 22 14:21:38 (none) local0.warn cgminer[971]: API running in IP access mode on port 4028 (9)
Apr 22 14:21:47 (none) local0.notice cgminer[971]: All asics arrive target freq