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求助:DM8127 UBL串口启动



公司新打了一批DM8127的电路板,小弟最近在调试,用的串口启动方式。当我用 teraterm 传入 IPNC_RDK v3.5 编译出的 u-boot.min.uart 时,出现了好几种不同的情况:

1.没反应,连 banner 都没打印;

2.只打印了 banner,然后挂掉:

3.display_dram_config后挂掉:

4.UBL 运行起来了,但只要一键入 loadb 命令,直接挂掉:

请有经验的大神帮忙分析出现这种现象的原因,在线等待,谢谢!