RE: [RFC] Change ECC algorithm from userspace

Jon Povey
2011-10-28T10:33:52Z

linux-mtd-bounces@lists.infradead.org wrote:
> I want to be able to use 1-bit ECC for the first partition where I
> save the loader binary and has to be accessed by the ROM boot but use
> a 4-bit ECC for my rootfs partition.
>
> Does anyone have this same issue?

DM355 and DM365 has similar issues as the RBL expects a different OOB/ECC
layout to Linux.

> What is the best approach to store data in a NAND device using
> different ECC techniques?

What I have done is write a utility that calculates ECC and writes to
the mtd device in RAW mode. So to rewrite the bootloader I take care of
the ECC and layout at application level without changing the kernel.

--
Jon Povey
jon.povey@racelogic.co.uk

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