[coreboot] More experiments with disabling the ME

[Federico Amedeo Izzo]

On 11/11/2016 10:16 AM, Persmule wrote:
> Hi everybody,
> After a manual shutdown and repower, the integrated NIC is functional
> again. Has similar phenominon been observed yet?
>> Now my x220 has survived nearly one hour, and the MEI has disappeared from PCI bus, but, additionally, the integrated NIC ceased to be functional with such error seen from dmesg:
>>
Hi Persmule,
Thanks for trying out Nicola's script to clean the ME blob.

Be careful whenever you try changing ME blob to poweroff completely the
computer, and start again, because apparently if you don't reboot the ME
won't load the new firmware from the flash.
In fact it happened to me that after flashing a non valid ME firmware on
my X201 the computer survived the reboot but became a brick after shutdown.

The possibility of replacing the ME blob inside an official (Lenovo or
other) bios is very interesting because it extends also to hardware not
supported by coreboot, and probabily to CPUs newer than Ivy Bridge
(Trammell Hudson tested it on a Skylake mobile CPU
https://www.coreboot.org/pipermail/coreboot/2016-November/082335.html)



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