Re: FAT for NAND Flash

[Yong-iL Joh <tolkien@mizi.com>]

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Studying MTD <studying_mtd@yahoo.com> writes:

> --- Yong-iL Joh <tolkien@mizi.com> wrote:
> > 1. FAT (of Linux)
> > 2. SCMTL (similar to FTL, NFTL,...)
> 
> what is SCMTL ? 
> from where i can get specs of SCMTL.

Oh, mistype! SMCTL.
just name it for convenience.
Smart Media Card Translation Layer. :-)

> is it also having patent ?

I don't know, see SSFDC forum about that.

> > 3. NAND_smc (it's almost same NAND in MTD except
> > handling ECC)
> 
> then how you handle ECC ?

ECC algorithm is same. but different mapping of data in OOB

In SMFS by SSFDC, for the 512+16 bytes/pages models
usage of OOB is following

512 ~ 515       reserved
516             Data Status Byte
517             Block Status Byte
518,519         Block Address Field-1
520~522         ECC Field-2
523,524         Block Address Field-2
525~527         ECC Field-1

> from where i can get your source code.
> Is it working properly .

attatched source of driver is working properly based in 2.4.16-rmk2.
so mtd layer is a bit older.
(if this distribution is illegal, please do not use for commercial.
 I'm not lawyer. :p )

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-- 
Joh, Yong-iL
E-mail: tolkien@nownuri.net tolkien@mizi.com