Hello David, Am 14.01.2008 um 06:12 schrieb David Baird:
> I'm having trouble with getting Linux to boot farther than early_init. > [...] > So, I experimented further and discovered that different memory > regions seem to be aliased on to each other every 2*32*256 bytes. This sounds either like a wrong programming of an BRx/ORx memory controller register pair (which, AFAIK, the PPC405 does not have), or like a messed up address map in EDK. My guess is that an optimized/ sloppy implementation of the address decoder for some peripheral in an EDK system could produce something like you described; or there's a block RAM that's attached to a controller in the wrong way; or the bank/address parameters of the DDR controller don't match the physical setup... there's a lot that can go wrong obviously on a configurable SoC. Can you be more specific about your hardware platform? Is this a reference design? What board are you using? Regards - Enno -- Dipl.-Ing. Enno Luebbers Computer Engineering Group University of Paderborn Warburger Str. 100 33098 Paderborn http://wwwcs.upb.de/cs/ag-platzner phone: 05251 / 60-5397 fax: 05251 / 60-5377 _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
