[coreboot] Unprotecting 29F002BT

Ludwig Jaffe luja at openhardware.de
Thu Jun 5 11:21:03 CEST 2008


a a schrieb:
> Ludwig Jaffe wrote:
> > Hi
> >
> > yes, I will check the jumper to unprotect the flash.
> > Accourding to an1122 this should be the "temporary unprotect"
> > by rising pin1 to 12V=VID.
> > The block-unprotect algorithm (protect all blocks, then unprotect all)
> > should be added to flashrom aswell so we can permanently unprotect the
> > flash.
>
> jep done that .. but i think you did also ?

No, not yet. That is work to do.
Soldering-in the jumper is not the big deal btw.

>
>
> > Greetings
> >
> > LuJa
> >
> >
> >
> > a a schrieb:
> >> Ludwig Jaffe wrote:
> >>> Hi,
> >>>
> >>> looking for the unprotect-algorithm I found the AN1122 from ST.
> >>> The figure 4 shows a way to do this, but, how do we put VID=12V to
> >> Pin#1?
> >>> Does anybody know how this is done or if we should use the
> >>> programmer-mode/way instaed of insystem/mode/way?
> >>>
> >>> Thanks for your comments.
> >>>
> >>> Attached the application-note, and the datasheet of st29F002B series.
> >>>
> >>>
> >>> Greetings
> >>>
> >>> LuJa
> >>>
> >>>
> >> from the other tread i assume you are talking about the
> >> compaq deskpro en sff 600n motherboard which has a jumper (P34 but not
> >> mounted only pads) to connect pin1 to 12Vdc
> >>
> >>
> >> 
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