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

["Lendacky, Thomas" <thomas.lendacky@amd.com>]

On 4/30/21 1:44 PM, Laszlo Ersek wrote:
> 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://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.tianocore.org%2Fshow_bug.cgi%3Fid%3D3345&data=04%7C01%7Cthomas.lendacky%40amd.com%7C66427d33196c49e1cb3608d90c07f4a2%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637554050583398276%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=WdFDHBTgxDnvD%2BbNu1CisWXW7W8t3WhqEqWa4G14tLA%3D&reserved=0
>>
>> ---
>>
>> 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://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Ftianocore%2Fedk2%2Fpull%2F1620&amp;data=04%7C01%7Cthomas.lendacky%40amd.com%7C66427d33196c49e1cb3608d90c07f4a2%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637554050583398276%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=SZ52q4eTMIJ8PIcYBmlk1NXA7STO3xaphIS6oMWfjcI%3D&amp;reserved=0>.

Thanks for all your help getting this fixed, Laszlo!

Tom

> 
> 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@redhat.com>
>> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
>> Cc: Jordan Justen <jordan.l.justen@intel.com>
>> Cc: Brijesh Singh <brijesh.singh@amd.com>
>> Cc: Erdem Aktas <erdemaktas@google.com>
>> Cc: James Bottomley <jejb@linux.ibm.com>
>> Cc: Jiewen Yao <jiewen.yao@intel.com>
>> Cc: Min Xu <min.m.xu@intel.com>
>> Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
>> Cc: Stefan Berger <stefanb@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
>>
>