[flashrom] ITE 8518 flashing through keyboard port

[Curi0]

According to the schematic the power lines are shared. How could I check if
the EC is powered when accessing the flashing chip ?

On Fri, May 25, 2018, 3:02 PM Mike Banon <mikebdp2 at gmail.com> wrote:

> > Directly flashing the SPI chip maybe be dangerous since the EC can
> interfere unless the SPI chip is desoldered.
>
> EC will not interfere if the board will be powered off, and you could
> directly flash a SPI chip without desoldering by attaching a test clip
> to it (which is connected to a flashrom-supported programmer like a
> cheap CH341A). Examples of the instruction:
> https://www.flashrom.org/ISP ,
> http://dangerousprototypes.com/docs/Flashing_a_BIOS_chip_with_Bus_Pirate
> (for CH341A its the same, just a connection scheme and flashrom
> commands are a little bit different)
>
> On Fri, May 25, 2018 at 9:06 AM, Curi0 <zkqri0 at gmail.com> wrote:
> > Hi,
> > I have a laptop with ITE 8518 and I want to try to port coreboot. The SPI
> > flash chip is shared between the EC and BIOS and is connected to the ITE
> > 8518. Directly flashing the SPI chip maybe be dangerous since the EC can
> > interfere unless the SPI chip is desoldered.
> >
> > The ITE 8518 has a mode where the keyboard connector can be used a
> parallel
> > port for flashing
> > (
> http://www.recomb-omsk.ru/published/SC/html/scripts/doc/94689_datasheet_IT8512E_F_V0.4.1.pdf
> > similar chip) but there isn't any information on the software required.
> This
> > video (https://www.youtube.com/watch?v=GYedPOLiUOo) shows flashing the
> BIOS
> > using a proprietary programmer software so it should be possible.
> >
> > So is there any way I could reverse engineer the parallel port if I don't
> > have access to the ITE flashing software and the programmer in the video
> > costs $150 and even if it could be reverse engineered there won't be any
> way
> > to see the raw parallel port commands it sends.Possibly there are some
> > documents floating on the internet with the information.
> >
> > Curi0
> >
> > _______________________________________________
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> > flashrom at flashrom.org
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>
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