Fw: [U-Boot-Users] AMD MirrorBit FLASH Support?

[Frederic Soulier]

Hi there,

We use AMD and Fujitsu mirrorbit Flash chips on our custom board.
It works fine with U-Boot since Mirrorbit flash command operations are the
same as classical AMD parts.

However few specifications change between classical and mirrorbit flashes :

- Programming time is 100us with mirrorbit  (16 us for classical), and
because of this :
- Mirrorbit allow to write several words in one command (write buffer
programming)

 If you want full support for Mirrorbit flashes in U-Boot, you have simply
to code the write buffering feature.
I do not use this, so standard AMD/Fujitsu/ST code is working fine for me.

Frederic Soulier
OS engineer
Audemat-Aztec, Strasbourg, France


> ----- Original Message -----
> From: "Tom Guilliams" <tguilliams at sbs.com>
> To: <u-boot-users at lists.sourceforge.net>
> Sent: Tuesday, April 22, 2003 1:22 AM
> Subject: [U-Boot-Users] AMD MirrorBit FLASH Support?
>
>
> > Does anyone know of support for the AMD MirrorBit FLASH parts?  For
> example,
> > the AM29LV256M - 256MB, x8/x16 data width.  There's really not much to
> > change compared to strataflash but I thought I'd ask in case someone's
> > already done it.  I don't see anything in the source tree but I could be
> > wrong.
> >
> > - Tom
> >
> >
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