Re: [flashrom] W836xx : HP Z820 : flashrom -V

[Stefan Tauner]

On Sat, 3 May 2014 14:02:17 -0700
Roberto  wrote:
> Timely email, succesfully used buspirate just two days ago. Still
> struggling though because you lose the Intel ME/ATM functions. The code for
> the ME co-resides with the BIOS code in the flash. But the rest works fine.
> Those functions must be signed with the certificate being stored elsewhere.

It does but probably in the 0x00005000-0x0050ffff range as written in
the flash descriptor (and shown by flashrom). This is pretty much
self-contained and should remain in a working condition if you leave it
alone and just tamper with the BIOS region.

W836xx : HP Z820 : flashrom -V

[Roberto]

I have been using a layout file but only flashing the bootblock at 0xff000
to 0xffffff.

I will do the full BIOS section and see if there is a difference. Let you
know
On May 3, 2014 2:09 PM, "Stefan Tauner" 
wrote:
> On Sat, 3 May 2014 14:02:17 -0700
> Roberto  wrote:
> > Timely email, succesfully used buspirate just two days ago. Still
> > struggling though because you lose the Intel ME/ATM functions. The code
>
> for
> > the ME co-resides with the BIOS code in the flash. But the rest works
>
> fine.
> > Those functions must be signed with the certificate being stored
>
> elsewhere.
>
> It does but probably in the 0x00005000-0x0050ffff range as written in
> the flash descriptor (and shown by flashrom). This is pretty much
> self-contained and should remain in a working condition if you leave it
> alone and just tamper with the BIOS region.