Hello Wolfgang, 2014-10-22 18:56 GMT+02:00 Wolfgang Denk <w...@denx.de>: > Dear Dirk, > > In message > <CANVMifLGzKz+=-k-e9_ssxbxpypdg1yqexc-tscapi7wvxq...@mail.gmail.com> you > wrote: >> I had exactly the same behaviour some time ago and tracked it down to >> this (and posted it on the mailing list, but sadly got no feedback): > > Thanks a lot for this pointer.
I am really glad this was helpful. It was very nasty to track down, so I was really concerned when I found it. For that reson I chose "u-boot ppc does not work with gcc 4.8" as a topic when I reported it to U-Boot mailing list and put you on CC on august 5th. But maybe I should have been more explicit, something like "APOCALYPSE NOW: u-boot ppc does not work with gcc 4.8" ;) This problem is *not* fixed by the links Marek addressed. Just a quick explanation of what is going on: Since gcc 4.8 we have new sections .data.rel.ro and .data.rel.ro.local. They contain absolute addresses that should really be fixed up in our relocation process but are not considered yet. In your case you wre running u-boot referencing the not fixed-up addresses which worked perfectly as long as they still pointed to valid content. But as soon as you erased flash this was no longer the case. To make debugging even more fun, behaviour also depends on cache contents. In my original mail I referenced this potential solution, at least it worked for me: https://gcc.gnu.org/ml/gcc-help/2014-02/msg00054.html Cheers DIrk _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
