Arria 10 soc cannot ping the host during uboot

hello everyone! i would like to ask if anyone has done anything with arria 10 soc ,excuse me for not speaking english very well, i used the same network card ksz9031 as the development board, the hardware connection of the pin of the nic is the same, in uboot source also found the configuration of the part of the network card, source code provided by the official, the network command parameter(ipaddr, serverip, ethaddr, gatewayip) is configured, however,the host cannot be ping, all nic parameters read by mii are 0, ask if you have done similar development, how to solve the network problem. thank you very much for reading this and giving me some help.

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