Re: [tpmdd-devel] [PATCH v5 3/3] tpm: add securityfs support for TPM 2.0 firmware event log

[Stefan Berger]

On 11/24/2016 04:10 PM, Jarkko Sakkinen wrote:
> On Wed, Nov 23, 2016 at 12:27:37PM -0500, Nayna Jain wrote:
> > Unlike the device driver support for TPM 1.2, the TPM 2.0 does
> > not support the securityfs pseudo files for displaying the
> > firmware event log.
> >
> > This patch enables support for providing the TPM 2.0 event log in
> > binary form. TPM 2.0 event log supports a crypto agile format that
> > records multiple digests, which is different from TPM 1.2. This
> > patch enables the tpm_bios_log_setup for TPM 2.0  and adds the
> > event log parser which understand the TPM 2.0 crypto agile format.
> >
> > Signed-off-by: Nayna Jain <nayna@xxxxxxxxxxxxxxxxxx>
> I don't want to say much about this before I've tested it. I wonder
> what cheap hardware I could use to test this. Any advice is on this
> from anyone is much appreciated.

Virtual hardware would be cheap :-)

I tested this series with QEMU + vTPM + SeaBIOS with TPM 1.2 + TPM 2 
support (basing the log on ACPI). I had to fix an endianess issue on the 
SeaBIOS side, which made it work. So for this version of the patches I 
can give it my tested-by:

Tested-by: Stefan Berger <stefanb@xxxxxxxxxxxxxxxxxx>


> /Jarkko
>
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