In message 20060217092048.GA4381@false you wrote:
"Because of the reset configuration for CS0# this is a mirror of the onboard Flash memory. To be able to re-map memory U-Boot then jumps to its link address."
I don't get the second sentence. Flash is executed near the beginning of address space, exactly where the SDRAM shall get mapped. How is this possible ?
How is what possible? Jumping to the link addresses? Because the flash gets mirrores many times. Mapping of SDRAM? Because we change the flash mapping from the reset configuration via a pre,liminary into the final mapping.
As far as i understand my (working) u-boot code, relocation just works for my MPC875 board just because SDRAM is 64MB and Flash is 16MB in size. So when both are mapped to 0x0 just the first 16MB overlap and
RAM gets mapped only long after flash has been reconfigured, and then it's out of the way.
My concern was, if you are interested in my extensions.
Yes, of course.
Best regards,
Wolfgang Denk