In message 406D1751.1040304@email.si you wrote:
to my custom PXA255 board I decided to run some memory tests. I used mtest in u-boot and got the following results: => mtest Pattern 00000000 Writing... ^H^H^H^H^H^H^H^H^H^HReading... Mem error @ 0xA3EDBAEC: found A3EDBB0C, expected 00F76EBB
Mem error @ 0xA3EDBAF0: found A3EDBAFC, expected 00F76EBC
...
Memory test finds some errors during write/read 0x00000000 pattern and it hangs before it can read back 0xFFFFFFFF. I suppose this is not the expected board behaviour.
Well, it IS the expected behaviour in case of memory problem, when the behaviour of the system is completely undefined.
Has anybody any idea what is going on ?
You have memory problems.
Is this a config error ? (I should probably check the setting in configs/board.h)
Ooops??? I think it is pretty clear what it means when a memory test returns memory errors. To me this means that either the memory test or the memory itself is broken. Since the test is working fine on many other boards it's probably your hardware.
Best regards,
Wolfgang Denk