[edk2-devel] [PATCH v3 0/5] SEV-ES TPM enablement fixes

[Laszlo Ersek]

On 04/29/21 19:12, Lendacky, Thomas wrote:
> This patch series provides fixes for using TPM support with an SEV-ES
> guest.
> 
> The fixes include:
> 
> - Decode ModRM byte for MOVZX and MOVSX opcodes.
> - Add MMIO support for MOV opcodes 0xA0-0xA3.
> - Create a new TPM MMIO ready PPI guid, gOvmfTpmMmioAccessiblePpiGuid
> - Mark TPM MMIO range as un-encrypted during PEI phase for an SEV-ES
>   guest and install the TPM MMIO ready PPI guid.
> - Update the Tcg2Config Depex to ensure the new PEIM runs before the
>   Tcg2Config PEIM
> 
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3345
> 
> ---
> 
> These patches are based on commit:
> ab957f036f67 ("BaseTools/Source/Python: New Target/ToolChain/Arch in DSC [BuildOptions]")

Merged in commit range ab957f036f67..1e6b0394d6c0, via
<https://github.com/tianocore/edk2/pull/1620>.

Thanks,
Laszlo

> 
> Changes since:
> 
> v2:
> - Update the TPM PEIM to only perform the mapping change when SEV-ES is
>   active (with a comment in the code to explain why).
> - Update the TPM PEIM file header comment.
> - Updates to the INF file (INF_VERSION, Packages, LibraryClasses, etc.).
> - Updates to PEIM file order in DSC and FDF files.
> - Split out Tcg2Config Depex change to a separate patch.
> 
> v1:
> - Create a TPM PEIM that will map the TPM address range as unencrypted and
>   install a new PPI to indicate the mapping change is complete.
> 
> Cc: Laszlo Ersek <lersek at redhat.com>
> Cc: Ard Biesheuvel <ardb+tianocore at kernel.org>
> Cc: Jordan Justen <jordan.l.justen at intel.com>
> Cc: Brijesh Singh <brijesh.singh at amd.com>
> Cc: Erdem Aktas <erdemaktas at google.com>
> Cc: James Bottomley <jejb at linux.ibm.com>
> Cc: Jiewen Yao <jiewen.yao at intel.com>
> Cc: Min Xu <min.m.xu at intel.com>
> Cc: Marc-André Lureau <marcandre.lureau at redhat.com>
> Cc: Stefan Berger <stefanb at linux.ibm.com>
> 
> Tom Lendacky (5):
>   OvfmPkg/VmgExitLib: Properly decode MMIO MOVZX and MOVSX opcodes
>   OvmfPkg/VmgExitLib: Add support for new MMIO MOV opcodes
>   OvmfPkg: Define a new PPI GUID to signal TPM MMIO accessability
>   OvmfPkg/Tcg2ConfigPei: Mark TPM MMIO range as unencrypted for SEV-ES
>   OvmfPkg/Tcg2ConfigPei: Update Depex for IA32 and X64
> 
>  OvmfPkg/OvmfPkg.dec                                       |   4 +
>  OvmfPkg/AmdSev/AmdSevX64.dsc                              |   1 +
>  OvmfPkg/OvmfPkgIa32.dsc                                   |   1 +
>  OvmfPkg/OvmfPkgIa32X64.dsc                                |   1 +
>  OvmfPkg/OvmfPkgX64.dsc                                    |   1 +
>  OvmfPkg/AmdSev/AmdSevX64.fdf                              |   1 +
>  OvmfPkg/OvmfPkgIa32.fdf                                   |   1 +
>  OvmfPkg/OvmfPkgIa32X64.fdf                                |   1 +
>  OvmfPkg/OvmfPkgX64.fdf                                    |   1 +
>  OvmfPkg/Tcg/Tcg2Config/Tcg2ConfigPei.inf                  |   2 +-
>  OvmfPkg/Tcg/TpmMmioSevDecryptPei/TpmMmioSevDecryptPei.inf |  40 +++++++
>  OvmfPkg/Library/VmgExitLib/VmgExitVcHandler.c             | 120 +++++++++++++++++++-
>  OvmfPkg/Tcg/TpmMmioSevDecryptPei/TpmMmioSevDecryptPeim.c  |  87 ++++++++++++++
>  13 files changed, 258 insertions(+), 3 deletions(-)
>  create mode 100644 OvmfPkg/Tcg/TpmMmioSevDecryptPei/TpmMmioSevDecryptPei.inf
>  create mode 100644 OvmfPkg/Tcg/TpmMmioSevDecryptPei/TpmMmioSevDecryptPeim.c
> 



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