petalinux制作的文件系统 板子EMMC启动 遇到问题

QIQQQ

Board: Xilinx ZynqMP
DRAM:  2 GiB
usb dr_mode not found
PMUFW:  v1.1
EL Level:       EL2
Chip ID:        zu3eg
NAND:  0 MiB
MMC:   mmc@ff160000: 0, mmc@ff170000: 1
In:    serial@ff000000
Out:   serial@ff000000
Err:   serial@ff000000
Bootmode: SD_MODE1
Reset reason:   EXTERNAL
Net:   
ZYNQ GEM: ff0e0000, mdio bus ff0e0000, phyaddr -1, interface rgmii-id

Warning: ethernet@ff0e0000 using MAC address from DT
eth0: ethernet@ff0e0000
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1...
## Executing script at 20000000
Wrong image format for "source" command
SCRIPT FAILED: continuing...
MMC: no card present
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1...
Warning: SPI speed fallback to 100 kHz
SF: Detected n25q256ax1 with page size 256 Bytes, erase size 64 KiB, total 32 MiB
Offset exceeds device limit
sf - SPI flash sub-system

Usage:
sf probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus
                                  and chip select
sf read addr offset|partition len       - read `len' bytes starting at
                                          `offset' or from start of mtd
                                          `partition'to memory at `addr'
sf write addr offset|partition len      - write `len' bytes from memory
                                          at `addr' to flash at `offset'
                                          or to start of mtd `partition'
sf erase offset|partition [+]len        - erase `len' bytes from `offset'
                                          or from start of mtd `partition'
                                         `+len' round up `len' to block size
sf update addr offset|partition len     - erase and write `len' bytes from memory
                                          at `addr' to flash at `offset'
                                          or to start of mtd `partition'
sf protect lock/unlock sector len       - protect/unprotect 'len' bytes starting
                                          at address 'sector'

SCRIPT FAILED: continuing...


no devices available
SCRIPT FAILED: continuing...
starting USB...
No working controllers found
USB is stopped. Please issue 'usb start' first.
starting USB...
No working controllers found
USB is stopped. Please issue 'usb start' first.
scanning bus for devices...
SATA link 0 timeout.
SATA link 1 timeout.
AHCI 0001.0301 32 slots 2 ports 6 Gbps 0x3 impl SATA mode
flags: 64bit ncq pm clo only pmp fbss pio slum part ccc apst

Device 0: unknown device
starting USB...
No working controllers found
ethernet@ff0e0000 Waiting for PHY auto negotiation to complete. done
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
BOOTP broadcast 10
BOOTP broadcast 11
BOOTP broadcast 12
BOOTP broadcast 13
BOOTP broadcast 14
BOOTP broadcast 15
BOOTP broadcast 16
BOOTP broadcast 17

Retry time exceeded; starting again
missing environment variable: pxeuuid
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/01-00-0a-35-00-22-01
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/00000000
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/0000000
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/000000
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/00000
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/0000
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/000
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/00
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/0
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default-arm-zynqmp-zynqmp
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default-arm-zynqmp
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default-arm
*** ERROR: `serverip' not set
missing environment variable: bootfile
Retrieving file: pxelinux.cfg/default
*** ERROR: `serverip' not set
Config file not found
starting USB...
No working controllers found
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
BOOTP broadcast 10
BOOTP broadcast 11
BOOTP broadcast 12
BOOTP broadcast 13
BOOTP broadcast 14
BOOTP broadcast 15
BOOTP broadcast 16
BOOTP broadcast 17

Retry time exceeded; starting again
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
BOOTP broadcast 10
BOOTP broadcast 11
BOOTP broadcast 12
BOOTP broadcast 13
BOOTP broadcast 14
BOOTP broadcast 15
BOOTP broadcast 16
BOOTP broadcast 17

Retry time exceeded; starting again


为什么会出现这种情况，