[LinuxBIOS] PhyWrite [SPI flash-chips]
anton.borisov at gmail.com
Tue Mar 13 16:37:10 CET 2007
On Mon, 12 Mar 2007 13:30:23 -0400
Richard Smith <smithbone at gmail.com> wrote:
> Carl-Daniel Hailfinger wrote:
> >>> Yeah, sorry, my bad :( I was referring to LPC (PLCC32). I don't know anything
> >>> about SPI.
> >> O'k. Does anyone common w/ SPI flashing / BIOS Saviour tools out there?
> > Easiest would be to desolder the CE# "chip enable" pin, connect it to
> > high level, attach a SPI chip with known-good image on top of it and
> > connect CE# of the new chip to the board.
> Where is the LPC <-> SPI being done? Can the northbridge do both? If
> there is a additional chip (say like an EC) that does the LPC to SPI
> conversion then there might be a way to put that device into recovery
> mode where you can download new bits into the SPI flash.
That sounds tricky. Can't find EC over here (this's casual desktop
> Otherwise you just have to remove the SPI part device and add a SOIC to
> DIP socket and use a DIP part. SOIC sockets are a pain in the ass the use.
> Or like Carl suggests. Lift the enable pin and wire up your own select
> system. Essentially the same as PLCC only less pins.
How to physically route signals is clear. Programming chip - my goal.
Board is ICH7-based, flashrom doesn't detect chip (SST25LF080A). I'm stuck
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