Re: [edk2-devel] [PATCH v3 3/9] ArmVirtPkg/PlatformPeiLib: discover the TPM base address from the DT

["Laszlo Ersek" <lersek@redhat.com>]

On 02/26/20 20:05, Ard Biesheuvel wrote:
> Introduce a boolean PCD that tells us whether TPM support is enabled
> in the build, and if it is, record the TPM base address in the existing
> routine that traverses the device tree in the platform PEIM.
> 
> If a TPM is found, install the gOvmfTpmDiscoveredPpiGuid signalling PPI
> that will unlock the dispatch of OvmfPkg's Tcg2ConfigPei. If TPM2
> support is enabled in the build but no TPM2 device is found, install the
> gPeiTpmInitializationDonePpiGuid PPI, which is normally installed by
> Tcg2ConfigPei if no TPM2 is found, but in our case Tcg2ConfigPei will
> never run so let's do it here instead.
> 
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> ---
>  ArmVirtPkg/ArmVirtPkg.dec                            |   6 ++
>  ArmVirtPkg/ArmVirtQemu.dsc                           |   5 +
>  ArmVirtPkg/ArmVirtQemuKernel.dsc                     |   6 ++
>  ArmVirtPkg/ArmVirtXen.dsc                            |   6 ++
>  ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c   | 101 ++++++++++++++++++--
>  ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.inf |  19 +++-
>  6 files changed, 129 insertions(+), 14 deletions(-)

Thanks for the update!

Acked-by: Laszlo Ersek <lersek@redhat.com>

Laszlo