Dear Stevan Ignjatovic, In message <1238580375.15731.11.ca...@stevan> you wrote: > When I cross-compile u-boot prepared for my custom made board with > mpc885 (CROSS_COMPILE=ppc_8xx-) using the toolchain found in eldk 4.2 > (gcc version 4.2.2) u-boot doesn't boot because of an exception: ... > However, when I cross-compile it using older toolchain (gcc version > 3.3.2) everything's fine: ... > Why does this happen?
Well, we don't know your code, so it is difficult to comment on it? One likely problem might be that you access device registers through pointers instead of using the correct accessor functions, thus missing required memory barrier / eieio / sync instructions etc. Recent compiler versions optimize much better that older ones, so they might optimize away certain parts of such incorrect code. 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: [email protected] The universe, they said, depended for its operation on the balance of four forces which they identified as charm, persuasion, uncertainty and bloody-mindedness. -- Terry Pratchett, "The Light Fantastic" _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
