[U-Boot-Users] 440SP DDR2 Issue

[Stefan Roese]

Hi Jeff,

On Friday 28 July 2006 19:15, Jeff Stevens wrote:
> I have a custom board I am trying to bring up that is
> a pretty close architecture to the Luan2 board.  I
> have an unregistered 2GB DDR2 module in the DIMM slot,
> and it works fine using the BDI2000.

Did you ever try a smaller module. I would start with something like 256MB. 
Are you aware that the MMU has to be setup for this big memory module?

> However, using 
> the same DDR2 configuration in U-Boot doesn't work.
> It boots up until the point it transfers over to
> memory.  I have enabled the memory test and it fails
> at the first address.  I have verified all of the
> memory configuration registers, and all seem to be set
> correctly.  I know there is something in the
> configuration I am missing, but I can't seem to figure
> it out.  Please help.  I would greatly appreciate it.

First try smaller modules. If they also don't work, you most likely have a 
problem with your DDR2 setup.

Best regards,
Stefan