[PATCH v2 3/3] tpm: allocate tpm event log if missing

[Ilias Apalodimas]

On Tue, 23 Jun 2026 at 11:38, Ilias Apalodimas
<ilias.apalodimas at linaro.org> wrote:
>
> Hi Ludwig,
>
> On Thu, 18 Jun 2026 at 12:16, Ludwig Nussel <ludwig.nussel at siemens.com> wrote:
> >
> > On 6/16/26 13:46, Ilias Apalodimas wrote:
> > >> [...]
> > >> Anyway, do you want me to submit your two patches as part of the series
> > >> or you want to follow up yourself?
> > >
> > > Carry them over imho, they were rotting in my branches for 1+ years,
> > > but I never had the chance to send them. Your patches were a good
> > > reason to rebase and revive them and they fit right in as can only
> > > rely on tcg2_measurement_init now.  I'll test/check the v4. I haven't
> > > gone through your changes in depth but they seemed reasonable, so I
> > > think this is fairly close on getting in
> >
> > With the patches on top the testsuite weirdly fails in platforms
> > xilinx_versal_virt:
> > https://github.com/u-boot/u-boot/pull/987
> >
> > Works without:
> > https://github.com/u-boot/u-boot/pull/989
> >
> > I can't figure out why though. While investigating I noticed that I need
> > to re-introduce the elog parameter to the measurement functions so the
> > integration actually has a chance for now, short of using dev->priv->log
> > always.
>
> Ok i'll have a look and see if I can figure out why

Ok I had a quick look. The reason is that
if (tcg2_platform_get_tpm2(&dev)) {
log_warning("Missing TPMv2 device for EFI_TCG_PROTOCOL\n");
return EFI_SUCCESS;
}

Has been removed from the EFI init of the subsystem, but the tests run
without a TPM. The init now fails and the entire EFI subsystem fails
to initalize.

Thanks
/Ilias
>
> Thanks
> /Ilias
> >
> > cu
> > Ludwig
> >
> > --
> > Ludwig Nussel
> > Siemens AG
> > www.siemens.com