[U-Boot-Users] Question about MPC8272 HRCW

Jerry Van Baren gerald.vanbaren at smiths-aerospace.com
Tue Jun 21 13:40:23 CEST 2005

raymond yang wrote:
> Still have questions, thanks ahead!


> 3)
> I pull-down the RSTCONF, it doesn't work, only with
> BDI2000 attached and config-file from BDI2000 (RSTCONF
> up of cuz), U-BOOT can start correctly. 
> I.e. 
> Thanks ahead!
> Best Regards
> Raymond

Look in your BDI config file and see what the BDI initialization is 
doing that you are not doing the same.  The answer is in there.

One classic problem is that the BDI config is initializing SDRAM 
properly, but your code is not.  Another classic problem is that the BDI 
is initializing BR/OR registers that you've forgotten to do in your 
start up (or done too late in the start up).

Strip all but the bare essentials out of your BDI config file a piece at 
a time.  When it stops working with the BDI, you found either the 
problem or something essential for the BDI.  Your task is to determine 
which it is ;-).


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