Porting uboot (2015.01) to a new Hardware Platform

?Hi
I must port uboot (2015.01) to a new platform (ti am335x soc). I don't know again really uboot and I search some documentation to do that (a sort of "Porting uboot to your new Hardware platform step by step" document).
I think to start by a copy of the beagle black board (with the same SOC :am335x)
Some one can help me ?
Thanks

Manuel

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