[coreboot] Where to get ME image/flash descriptors for the x220?

[Taiidan at gmx.com]

On 03/05/2017 05:20 AM, Arthur Heymans wrote:

> "Taiidan at gmx.com" <Taiidan at gmx.com> writes:
>
>> Well I managed to download the latest BIOS from the lenovo site, which
>> includes an ME update now the issue is that I can't seem to figure out
>> how to extract it from the .FL1 and .FL2 files.
>>
> Those might have a length too long to fit a flash so you need to trim
> those down before using ifdtool on those (If they contain and ifd of
> course)
> so depending on size of rom
> dd if=FL1(or 2)file of=vendor_bios.rom bs=1 count=xM
>
> and then ifdtool -x vendor_bios.rom
It didn't work :( after that still "no flash descriptor found in this image"

These are the files and the flash chip on the board is 8M
8523776 '$01CB000.FL1'
8523776 '$01CB000.FL2'
8523776 '$01CB100.FL2'
All of them have different hashes, but I do not know what makes them 
different (maybe it is for various board revisions?)

>
>> I would also like to know as to how I can re-flash the EC firmware if
>> that could potentially cause problems, I of course do not know if it
>> has DMA.
>>
> Only existing tool to flash EC is using vendor tool.
> EC are only accessed trough port mapped IO (or on newer ones also via
> memory mapped IO). EC itself does not have DMA afaik.
>