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To: Joseph Edward Hemann <j.hemann@utexas.edu>
Cc: marcandre.lureau@redhat.com, edk2-devel@lists.01.org
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Thu, 23 Aug 2018 13:44:18 +0200
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Subject: Re: Issues with OVMF detecting TPM2.0
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On 08/22/18 21:27, Joseph Edward Hemann wrote:
> Hello Laszlo,
> I have been trying to test measured boot using OVMF with swtpm and
> qemu, but I'm having issues.
> 
> For EDK2  I'm using git commit 3a0c1bf64b5deaa4e227b31 (pulled Jul
> 31), building OVMF with
>  build flags -DTPM2_ENABLE=TRUE -DSECURE_BOOT_ENABLE=TRUE
> -DMEM_VARSTORE_EMU_ENABLE=FALSE -DDEBUG_ON_SERIAL_PORT=TRUE

Commit 3a0c1bf64b5d:

- contains commit f15cb995bb38 ("SecurityPkg: Cache TPM interface type
info"), which is known to have caused a regression (see
<https://bugzilla.tianocore.org/show_bug.cgi?id=1075>), and

- does not contain commit 3781f14c31e0
("SecurityPkg/Library/Tpm2DeviceLibDTpm: fix
s/Constructor/CONSTRUCTOR"), in which Marc-André fixed the regression
(i.e., TianoCore#1075).

In other words, your test tree falls between the introduction of the
regression, and its fix.

Please re-test with an edk2 tree at least as recent as commit
3781f14c31e0 (commit date: 2018-Aug-09).

Thanks,
Laszlo