First release of write support for DiskOnChip 2000

David Woodhouse (David.Woodhouse@mvhi.com)
Fri, 20 Aug 1999 17:01:15 +0100


I've just released the 19990820 version of the Linux-MTD code, which contains
a preliminary attempt at write support for the NFTL flash filing system used
on the DiskOnChip devices.

It appears to work if you're nice to it, although it gets confused if the NFTL
doesn't _exactly_ meet the specs (or my understanding of them).

Anyway, there's also an nftl_format program included with it, so if you use
that to create your NFTL filesystem on the flash, you shouldn't have any
problems. My contact in M-Systems is on vacation at the moment, so I'll work
on interoperability with their code when he gets back in a couple of weeks'
time.

In the meantime, it needs error correction to be implemented, it needs some
proper arbitration of access to the flash other than sti(), and some other
cleanups. My request for clever people who know about Reed-Solomon ECC codes
to package up their brain and send it to me still remains.

I'd like to offer my thanks to M-Systems for seeing the light and helping me
out with specifications for the beast, even though it took me two years to get
them to do so :)

Get it at http://www.linux-mtd.infradead.org/

---- ---- ----
David Woodhouse David.Woodhouse@mvhi.com Office: (+44) 1223 810302
Project Leader, Process Information Systems Mobile: (+44) 976 658355
Axiom (Cambridge) Ltd., Swaffham Bulbeck, Cambridge, CB5 0NA, UK.
finger dwmw2@ferret.lmh.ox.ac.uk for PGP key.

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