Dear Joakim Tjernlund, In message <of5324ec0a.37c044b2-onc12577d1.0031f002-c12577d1.00326...@transmode.se> you wrote: > > > 4 nops after _start does the trick, i.e. the board is up and running fine. ... > How is this going? If nothing else I think you should send > a patch for 83xx, adding the 4 nop's as your(and mine) board is > broken otherwise. Freescale guys seems busy with other things so > I think this is the best thing to do.
I don't like the idea of adding such code without any understanding why it would be needed for some boards, while it is not needed for others. Is it really needed at _start? Or can these NOPs be anywhere, and are just needed to adjust some alignment? When building for example for the MPC8315ERDB board, I see this strange alignment here: -> grep _start_of_vectors System.map fe0001a8 T _start_of_vectors Adding 4 NOPs will move this nicely to the next exception vector address at 0x200. Eventually this is an alignment problem (but then, the "STD_EXCEPTION(0x200, ...)" is supposed to align the respective code to 0x200, and indeed we see fe0001a8 T _start_of_vectors fe000200 t MachineCheck fe000300 t DataStorage fe000400 t InstStorage ... Given the fact that _start_of_vectors is not used anywhere in the 83xx code, all this is a pretty big mystery to me. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de The explanation requiring the fewest assumptions is the most likely to be correct. -- William of Occam _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot