u-boot hang on starting

riccardo
I tried to flash te u-boot following a howto founded on the web.

When I try to run the bootloader i get this:

Supervivi> go 0x31000000
go to 0x31000000
  argument 0 = 0x00000000
  argument 1 = 0x00000000
  argument 2 = 0x00000000
  argument 3 = 0x00000000

and it stops.

What can I do?

davef
Did you put the correct file size in for u-boot?  Did you check that the
uploaded file size was the same as the original file? 

Was the HowTo Forrest Bao's article?

riccardo
Now it's ok.

I founded this one
http://bill.station51.net/index.php?post/2010/01/16/U-Boot-on-Mini2440

Thank you.