[coreboot] Newbee patch for A49LF040A (Alix2c2) please have a look.

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Fri Jun 6 21:28:15 CEST 2008

Hi Jens,

On 06.06.2008 20:50, Jens Kuehnel wrote:
> Hi coreboot list,
> I visited the coreboot/flashrom talk during linuxtag, and was really 

I remember... you were the one who brought hardware to the workshop.

> impressed how "easy" it is can help/to hack. My target is to let 
> coreboot run on my alix2c2 (the one with only 2 network cards).
> The advantage for me is, its similar to an existing target (not too 
> hard), but far enough to learn something.

That's great.

> My first problem it that flashrom does not support my flashchip.
> But I hope I can fix this. :-) Patch attached.

Thanks for the patch. Unfortunately it seems your mailer wrapped the
patch. Thunderbird users either
- have to attach the patch or
- select HTML composition, then choose "Preformat", then paste the patch
and then send it and confirm converting the mail to plain text.

> But before I break my flash. Is it possible to destroy the chip, by 
> using the wrong method?

In theory, this should not happen. In practice, old or extremely cheap
flash chips can have sticky bits after a few erase cycles. I think the
risk for your board is almost zero.

> The chip is a AMIC A49LF040A. It look like a SST 49LF040 replacement, I 
> found the IDs @ http://www.amictechnology.com/pdf/A49LF040A.pdf.
> I have a "LPC.1A", which means I can recover from bad flashes. But I 
> don't like to solder SMD.
> Can someone with more experience look over it, before I test it? Thanks 
> a lot!

I'd like to do that, but the patch was so mangled that I had problems
reading it. It looks like you put vendor and device ID together in
AMIC_A49LF040A. The vendor ID you want is probably AMIC_ID_NOPREFIX.

> Greetings from Frankfurt/M (Germany)

Greetings from Tuebingen (same country)


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