[U-Boot] Porting u-boot to new PPC440EP board

[Stefan Roese <sr@denx.de>]

On Friday 03 July 2009 05:26:22 yangguang3501 wrote:
> I use a new board designing based on PPC440EP evaluating board, called
> yosemite. I use u-boot version 1.3.1.

1.3.1 is quite old. I strongly suggest that you update to a recent version.

> I reduce the SDRAM and Flash size to 128M and 16M, I do the porting works
> as decribed in th maillist"new board SDRAM conf",which you posted in last
> year. http://lists.denx.de/pipermail/u-boot/2008-November/042924.html
> and now face the same problem when u-boot run to trap_init, and get the
> same error message. When I add blr instruction to the trap_init function,
> it return but hang befor main loop.

You can't just exit the trap. You need to solve the problem that issuing the 
trap before you can really proceed further.

> Would you like tell me how did you
> solve the problem ,  or how can I completely porting u-boot to the new
> board.

This could have several reasons. One is incorrect SDRAM setup. Other are 
possible as well. Not sure what's going on here.

Best regards,
Stefan

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