[flashrom] Status of dediprog support?

Steven Zakulec spzakulec at gmail.com
Tue Jan 18 05:03:55 CET 2011


On Fri, Jan 14, 2011 at 4:11 PM, Stefan Reinauer <stepan at coreboot.org>wrote:

> * Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net> [101213
> 09:20]:
> > Hi Carl,
> >
> > I'd have answered sooner, but right now I'm switching net providers and
> > have only very sporadic access to email.
> >
> > Auf 10.12.2010 21:43, Carl Worth schrieb:
> > > I was delighted to find flashrom when I needed to recently flash a chip
> > > with a Dediprog SF100 and I googled for "dediprog linux".
> > > [...]
> > > Is there some further testing I could help do before this support is
> > > enabled by default?
> > >
> >
> > Here is the todo list for the Dediprog driver in flashrom:
> > - Implement fast write support. I know how to do most of it, but I won't
> > have time to tackle that before January at the earliest. That would give
> > you native write speed. I'd tell you how to do it, but that would be
> > roughly as difficult as writing it myself (I only have lots of USB
> > traces and some reverse engineered data).
> > - Check _every_ SPI chip if it can handle the FAST READ (0x0b) command
> > and mark the ones which can't, because the Dediprog driver uses FAST
> > READ by default, and all other SPI programmer drivers use the standard
> > READ (0x03) command, so a read test for any given chip with the Dediprog
> > is useless for all other programmer drivers...
> > - Hook up speed setting support (dediprog_set_spi_speed needs to be
> > handled the same way as dediprog_set_spi_voltage, and that also means it
> > should take the frequency as parameter instead of some obscure frequency
> > ID).
>
> This is a good TODO list. But I think we should enable dediprog for a
> wider audience by setting it to default on in the Makefile before that.
> This will make the chance for getting the SPI chips tested by someone
> using the dediprog much more likely.
>
> Stefan


>
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>

Hi, I hope to have a (partial?) list of the chips that support fast_read by
this weekend.
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