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Subject: Re: mtd support for large NAND
From: Artem Bityutskiy <dedekind@infradead.org>
To: Charles Manning <manningc2@actrix.gen.nz>
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Date: Tue, 16 Oct 2007 10:27:23 +0300
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On Tue, 2007-10-16 at 13:27 +1300, Charles Manning wrote:
> On Friday 12 October 2007 21:36:09 falls huang wrote:
> > Hello !
> >
> >   How can I simulate a large nandflash(>4G) in linux PC ? I want to
> > take a look at it, but I don't have any develop-board that has 4G
>=20
> There are a few problems you face here. Firstly, mtd does not support >4G=
=20
> which will need fixing.
>=20
> Secondly, even if your system has > 4G it might not be all simultaneously=
=20
> accessible and you will need to use highmem as a way to do temporary mapp=
ings=20
> to access this memory.
>=20
> I might be tempted to try do this using some sort of userspace driver the=
n=20
> just backing the driver with regular files (eg. 8x1G files to simulate 8G=
 of=20
> NAND).

Or create something like blk2mtd.

--=20
Best regards,
Artem Bityutskiy (=D0=91=D0=B8=D1=82=D1=8E=D1=86=D0=BA=D0=B8=D0=B9 =D0=90=
=D1=80=D1=82=D1=91=D0=BC)