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From: "Ricardo Araújo" <ricardo@lsd.ufcg.edu.br>
To: "Ricardo Araújo" <ricardo@lsd.ufcg.edu.br>
Cc: edk2-devel@lists.01.org
Subject: Re: Missing boot related measurements at TPM 2.0 PCRs 0-7 with OVMF
Date: Wed, 1 Aug 2018 14:50:45 -0300 (BRT)	[thread overview]
Message-ID: <1169526465.93534.1533145845454.JavaMail.zimbra@lsd.ufcg.edu.br> (raw)
In-Reply-To: <551258016.93465.1533144825411.JavaMail.zimbra@lsd.ufcg.edu.br>

The commit I was referring to is: https://github.com/tianocore/edk2/commit/f15cb995bb3880b77e15afe6facd3da05e599a17

Regards,

Ricardo Araujo - 
www.lsd.ufcg.edu.br/~ricardo 

----- Mensagem original -----
De: "Ricardo Araújo" <ricardo@lsd.ufcg.edu.br>
Para: edk2-devel@lists.01.org
Enviadas: Quarta-feira, 1 de agosto de 2018 14:33:45
Assunto: [edk2] Missing boot related measurements at TPM 2.0 PCRs 0-7 with OVMF

Hi everyone, 

I'm using OVMF with a simulated TPM 2.0 (from https://github.com/stefanberger/swtpm) and I noticed lately that PCRs 0-7 are zeroed after booting the vm (ubuntu 18.04) and the only message related to this in dmesg is: 

[ 2.286690] tpm_tis 00:06: 2.0 TPM (device-id 0x1, rev-id 1) 
[ 2.303753] tpm tpm0: A TPM error (256) occurred continue selftest 
[ 2.314199] tpm tpm0: starting up the TPM manually 

I found this started to happen after this commit , previous commits to that are showing boot time measurements on PCR 0-7 normally and the error message is gone. Has anyone experienced the same behavior? I followed the instructions here for building OVMF but I added the parameters -D TPM2_ENABLE=TRUE -D SECURE_BOOT_ENABLE=TRUE -D HTTP_BOOT_ENABLE=TRUE. Is there anything else I need to add to enable these measurements? 

Regards, 

Ricardo Araujo 
www.lsd.ufcg.edu.br/~ricardo 

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  reply	other threads:[~2018-08-01 17:50 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-01 17:33 Missing boot related measurements at TPM 2.0 PCRs 0-7 with OVMF Ricardo Araújo
2018-08-01 17:50 ` Ricardo Araújo [this message]
2018-08-01 21:49   ` Laszlo Ersek
2018-08-02  2:04     ` Zhang, Chao B
2018-08-02 13:14       ` Laszlo Ersek
2018-08-03  0:22         ` Zhang, Chao B
2018-08-03 13:39           ` Ricardo Araújo
2018-08-03 14:45             ` Laszlo Ersek
2018-08-06 15:26               ` Zhang, Chao B
2018-08-09 14:09                 ` Marc-André Lureau
2018-08-09 14:55                   ` Laszlo Ersek
2018-08-09 15:46                     ` Zhang, Chao B
2018-08-09 16:09                       ` Laszlo Ersek

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