This may be an issue with the RBL not detecting your NAND chip, if I remember correctly DM355 does not support 4KB page devices at the moment, although it is not very clear and may support some devices, or I have a vague memory that for some 4KB devices it reads them as if they were 2KB page devices, so you can put "hand-crafted" data in the early blocks enough to get UBL loading. I also seem to remember some talk of a new revision of DM355 that could support more recent NAND devices. Maybe someone from TI could comment. I have not been looking into this recently and my memory is flaky.
-- Jon Povey, Design Engineer [email protected] | +44(0)1280 825983 ________________________________ From: [email protected] [mailto:[email protected]] Sent: 23 January 2009 09:12 To: Jon Povey; [email protected]; [email protected] Subject: RE: dm355:ecc query Hi Jon, Actually we are facing a strange problem. I am using MT29F16G08DAA nand chip with page size: 4096 I have written UBL descriptor in block 1, page 0 and UBL in block 2, page 0. When I change boot mode to NAND, I do not see any message on console and as board is not falling back to SD mode, I suspect RBL found valid magic number. But I don't understand why it can't load UBL. On my head I suspect two possibilities a) ECC errors while copying UBL from NAND b) RBL is unable to find UBL (maybe information given in UBL descriptor is taken incorrectly by RBL) I do not have JTAG with me. Regards, Jitendra Racelogic is a limited company registered in England. Registered number 2743719 . Registered Office Unit 10, Swan Business Centre, Osier Way, Buckingham, Bucks, MK18 1TB . The information contained in this electronic mail transmission is intended by Racelogic Ltd for the use of the named individual or entity to which it is directed and may contain information that is confidential or privileged. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email so that the sender's address records can be corrected. The views expressed by the sender of this communication do not necessarily represent those of Racelogic Ltd. Please note that Racelogic reserves the right to monitor e-mail communications passing through its network
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