Thank you Stefan,
On Tue, Oct 21, 2008 at 05:54:21PM +0200, Stefan Roese wrote:
On Tuesday 21 October 2008, Ayman M. El-Khashab wrote:
it is stuck inside the relocation or immediately after it branches to the code in RAM.
I suggest that you enable DEBUG in lib_ppc/board.c (define DEBUG before the #includes). This will show you a little more.
I should have mentioned that we have DEBUG enabled and we've also run the RAM test that is included in u-boot. The ram test does pass.
But you may be correct that U-Boot hangs/crashes upon relocation. This is most likely a problem with the DDR2 configuration. You might have noticed the latest autocalibration changes for the 4xx DDR2 controller. It's worth to give these new methods a try.
I am not familiar with those, I thought that once the SDRAM is operating you cannot alter those calibration and timing/delay registers. Is this calibration something that is enabled in u-boot or just via the register accesses to the memory controller?
Thanks Ayman