[coreboot] GM45 ich9deblob and intel ME question

Michal Widlok michalwd1979 at gmail.com
Sun Jun 4 12:16:11 CEST 2017

I know that libreboot completely remove intel ME from old boards based
on GM45 chipset (like lenovo T400), and recently I found that it is
possible to neutralize it on newer chipsets also:
Since some of my T400 laptops still running on original BIOS (mostly
because of external video card and battery management with tp_smapi),
I was thinking if it is possible to use ich9deblob to remove intel ME
from original bios image. I have a special connector added to the
laptops so reading/writing flash images is quick and easy now.
The question is: Can I generate new descriptors with ich9deblob from
factory.rom (original bios image) and then add the descriptors with
"dd" to it just like to the libreboot image? Like:
flashrom -r factory.rom
dd if=deblobbed_descriptor.bin of=factory.rom bs=1 count=12k conv=notrunc
flashrom -w factory.rom

Thanks in advance,
Michael Widlok

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