[flashrom] Fwd: Intel 82557 Ethernet Pro 100 w/ Fujitsu 29F040-70 chip [revised]

Stefan Tauner stefan.tauner at student.tuwien.ac.at
Thu Jun 16 14:07:15 CEST 2011

On Wed, 15 Jun 2011 15:41:13 -0600
Daniel Fussell <dlf29 at et.byu.edu> wrote:

> Just realized I forgot to include the requested command outputs.  Dough!
> -------- Original Message --------
> Subject: 	Intel 82557 Ethernet Pro 100 w/ Fujitsu 29F040-70 chip
> Date: 	Tue, 14 Jun 2011 19:46:26 -0600
> From: 	Daniel Fussell <dlf29 at et.byu.edu>
> To: 	flashrom at flashrom.org
> Doesn't detect the chip, though whether it's the recent addition of this
> board as a programmer or the unsupported chip I couldn't say.
> If there is a similar 4Mbit chip option you'd like me to try let me
> know.  I think it's perhaps similar to the Am29F040B and MX29F040
> ships.  I've just forced it as those chips, and hexdump shows the
> resulting image showing as all one's.  I'm assuming it's a bad read, but
> as I don't know what was on it to begin with, I can't be sure.

flashrom is missing support for this chip.

the datasheet can be found for example here:
flashrom reads out the correct ids for vendor (0x04) and chip (0xa4)
with the function probe_jedec_common as seen in your log.
there is already a define for the chip in flashchips.h:

after adding the needed data to flashchips.c it will probably work. you
can try copying a similar chip and change it where necessary. patches
are welcome of course ;)

> For all
> I know, the chip is fried.
why do you think that?

Kind regards/Mit freundlichen Grüßen, Stefan Tauner

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