Re: [BUG] Nuvoton NCPT650 TPM 2.0 mode not working

From: Jarkko Sakkinen
Date: Mon Nov 26 2018 - 16:13:12 EST


On Mon, Nov 26, 2018 at 08:15:38PM +0100, Michael Niewöhner wrote:
> Hi again,
>
> after some experiments I finally found a solution...
> There seems to be a bug in TPM2.0 firmware version (1.3.1.0) included in Lenovos
> UEFI image but they do not provide an update.
>
> I have extracted the firmware version 1.3.2.8 from Dell's XPS15 TPM2.0 firmware
> update and used this to replace the firmware in my Lenovo UEFI image.
> After flashing this version via UEFI Setup the TPM2.0 gets detected and now is
> fully working. WTF.

That can be called as true craftmanship :-) Awesome work! Maybe you
should even consider blogging this. Sounds interesting.

> For anyone having the same problem: binwalk, uefi-firmware-parser, uefipatch and
> flashrom are your friends ;-)
>
> Best regards
> Michael

/Jarkko