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TDA2EX17 uboot如何调试

现在我在客制化的板子上调试UBOOT,用的SDK是PROCESSOR_SDK_VISION_03_02_00_00_setuplinux,请教如下问题:

1.如何在线调试uboot,调试完之后需要通过sd卡启动吗?还是有其他比较方便的方法?

2.按照官网提供的VisionSDK_Linux_UserGuide制作启动sd卡之后串口打印如下问题:

U-Boot SPL 2016.05-00008-g1fbee98-dirty (Mar 27 2018 - 16:44:12)
DRA722-GP ES2.1
no pinctrl for hs200_1_8v
no pinctrl for ddr_1_8v
i2c_write: pads on bus probably not configured (status=0x10)
tps65903x: could not set LDO1 voltage.
i2c_write: pads on bus probably not configured (status=0x10)
tps65903x: could not set LDO1 voltage.
*** Warning - bad CRC, using default environment

Timed out in wait_for_event: status=0000
Check if pads/pull-ups of bus are properly configured
Timed out in wait_for_event: status=0000
Check if pads/pull-ups of bus are properly configured
Timed out in wait_for_event: status=0000
Check if pads/pull-ups of bus are properly configured

怀疑是读取eeprom失败导致,请问EEPROM里需要预存什么资料?还是可以跳过EEPROM读?