[flashrom] flashrom output for chipset Intel QM67

[Stefan Tauner]

On Thu, 28 Jun 2012 07:46:32 +0100
David Jones <dj61451 at gmail.com> wrote:

> Just a quick note to say I was able to read some of the flash content from
> this board:
> 
> 0x54: 0x00000000 FREG0: WARNING: Flash Descriptor region
> (0x00000000-0x00000fff) is read-only.
> 0x58: 0x09ff0600 FREG1: BIOS region (0x00600000-0x009fffff) is read-write.
> 0x5C: 0x05ff0005 FREG2: WARNING: Management Engine region
> (0x00005000-0x005fffff) is locked.
> 0x60: 0x00040001 FREG3: Gigabit Ethernet region (0x00001000-0x00004fff) is
> read-write.
> 0x64: 0x00001fff FREG4: Platform Data region is unused.
> 
> The "Management Engine region" being locked seems to cause the ultimate
> read failure. By forcing the read to only capture the other sections
> (changing the address to flash->read in flashrom.c:1500) I can get about
> 4Mb of data. The data from the BIOS region section seems to be settings as
> opposed to the actual bios firmware.
> 
> I don't understand SPI enough to know why the remaning region is locked or
> where to start looking to see if I can unlock it. If anyone has any
> suggestions please let me know.

hi!

i dont have time to answer in detail, but we are very aware of the
problem and dont have a good solution for it, SPI as such is not
involved in the problem but what intel calls "security". please search
in the ml archive and the coreboot blog for "locked region" and see
http://flashrom.org/trac/flashrom/browser/trunk/Documentation/mysteries_intel.txt#L17
-- 
Kind regards/Mit freundlichen Grüßen, Stefan Tauner