Dear Sphie, in message <OFF1C6B550.9120AF42-ONC1257015.004EFCD3 at brime.fr> you wrote: > > we need to have the start of Ram at 0x0300 0000 because we use the command > mem=40M (for uboot) to force Linux > in the low part of memory and to reserve the high part of memory (218M > exactly ) for ioremap (for our application) but we keep
I don't see any reason why this would prevent you from mapping the RAM at physical address 0. > the same flash mapping (to avoid more problems). I don't know which problems you want to avoid by your chosen memory map, but I guess that the problems you *cause* by this choice are more, and more severe. > Is the only solution is to inverse the mapping with Ram from 0 to 258M and > the flash above ? Yes. > Finally, will Busybox work with Ram starting at 0x03000000 ? No, it will not, as BB is application code which requires a running kernel, and your kernel will not run with such a mapping. Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de "It may be that our role on this planet is not to worship God but to create him." - Arthur C. Clarke
