[U-Boot] data alignment problem with redundant env

Andre Schwarz andre.schwarz at matrix-vision.de
Wed Apr 6 11:05:45 CEST 2011


Wolfgang,

>>> Which board would that be?  I don't see this on any board I tested.
>> it is mvblm7 (=MPC8343) and a new MPC8377 based one waiting for
>> the merge window to open.
>>
>>
>> I'm using a gcc-4.3.3 from OpenEmbedded/Angstrom ... if this matters at all.
> Can you please try and use anothe rtool chain, say good ole ELDK 4.2
> for a test?
ok - that's it.

Compiling with ELDK 4.2 gives an environment as expected.

4 bytes crc32 + 1 byte redundancy flags + data :

mvBL-M7> md ff800000 10
ff800000: 56900c81 01626175 64726174 653d3131    V....baudrate=11
ff800010: 35323030 00626f6f 74617267 733d726f    5200.bootargs=ro

Using OpenEmbedded's (Angstrom) gcc 4.3.3 produces a corrupted
layout with data having a 16-Bit alignment leading to a 1 byte offset when
redundancy is used.


Will stick to ELDK 4.2 for U-Boot.

Problem solved, but I'm still irritated how easily things can be broken 
nowadays ...


Regards,
André


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