移植 uboot 无法调通网络功能No ethernet found

Candy524

按照用户手册教程移植uboot时，启动时出现No ethernet found，已联网
选择emmc启动时可以ping通虚拟机，也有网络连接
但sd卡尝试移植时就出现问题

U-Boot 2016.03 (Oct 07 2022 - 20:12:13 +0800)

CPU:   Freescale i.MX6ULL rev1.1 792 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 105C) at 46C
Reset cause: POR
Board: I.MX6U ALPHA|MINI
I2C:   ready
DRAM:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
In:    serial
Out:   serial
Err:   serial
switch to partitions #0, OK
mmc0 is current device
Net:   Board Net Initialization Failed
No ethernet found.
Normal Boot
Hit any key to stop autoboot:  0
Unknown command 'console=ttymxc0,115200' - try 'help'
=> ping 192.168.1.253
No ethernet found.
ping failed; host 192.168.1.253 is not alive
=>

xiaoxiao315

底板用的是2.4版本的话要照最新资料的文档移植一下