[U-Boot] checking from uboot

[andrew_]

hi,
 I want to check the whether my ethernet, Mictor, RF interface,high speed
link ,DDR from uboot.I want to do it automaticlly by uboot.ie when uboot
gets loaded i want to check whether these devices are working  by
uboot.please tell me about the functions i have to make use of.please help.



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