Dear Marcel,
On Monday, January 03, 2011 07:57:33 pm Marcel wrote:
Great, I've got it to boot.
I have no idea why it suddenly works, but I guess after reviewing my config and changing a couple of things one of those things must have been the cause.
CONFIG_SYS_TEXT_BASE is 0x7f300000 which is the final jump address as mentioned in AT91bootstrap.
If this address is near end of SDRAM, and since u-boot relocates itself to end of SDRAM, you might risk an overlap, depending on malloc and stack sizes.
I'd advise to have AT91Bootstrap load u-boot to the very SDRAM start (so I did for our board).
I guess the issue is solved now and I'll certainly check out at91bootstrap to create my own low level init in u-boot. It eventually saves time at production level I think and I generally like to keep things as simple as possible anyways. Since all initialisation code is in at91bootstrap I guess I can just move it from there to u-boot (sounds easy, but I guess there's some more to it).
It might not be THAT easy. Also be aware that at91bootstrap is not GPL-ed...
Reinhard