From: Jon Povey
Sent: Monday, February 09, 2009 10:10 PM
>
> On DM355, I'm noticing that U-Boot (1.2.0 supplied with EVM) doesn't
> correctly deal with bad blocks when reading the kernel image, my
> understanding is that "nboot" isn't aware of them and just reads bad
> data.
>
> Having a look at the latest U-Boot sources on the project's gitweb, it's
> not clear if this is fixed yet; looks like there are some new .jffs2
> variants of nand commands that claim to skip bad blocks, but
> common/cmd_nand.c:546 in nand_load_image() is the less-than-reassuring
> comment:
>
> /* FIXME: skip bad blocks */
>
> If anyone has been here before and has any clues, they would be welcome.
The '.e' variants of the nand command (like nand read.e, nand write.e) do bad
block aware operations. These call the nand_{read|write}_skip_bad() routines in
drivers/mtd/nand/nand_util.c
Thanks,
Sekhar
> So far in production we've seen about 2% NAND chips with bad blocks
> where we want to put kernel images, so it looks like I might be learning
> a lot more about U-Boot than I care to.
>
> Thanks,
>
> --
> Jon Povey, Design Engineer
> [email protected] | +44(0)1280 825983
>
>
> 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
>
> _______________________________________________
> Davinci-linux-open-source mailing list
> [email protected]
> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
_______________________________________________
Davinci-linux-open-source mailing list
[email protected]
http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
