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SecurityPkg/Tcg2Config: remove TPM2_ChangEPS if it is not supported. 

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2793

In current implementation TPM2_ChangeEPS command is always available
in the TPM2 operation pull down list in TCG2 Configuration, which
is confusing when the command is not supported by specific TPM chip.
As a user experience improvement, TPM2_ChangeEPS command should be
removed from the list when it is not supported.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Qi Zhang <qi1.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Qi Zhang 2020-07-28 16:20:40 +08:00 committed by mergify[bot]
parent 1b0d659e6d
commit 3887820e5f
3 changed files with 10 additions and 0 deletions
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2
SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr
View File

@ -144,7 +144,9 @@ formset
option text = STRING_TOKEN(STR_TCG2_DISABLE), value = TCG2_PHYSICAL_PRESENCE_DISABLE, flags = RESET_REQUIRED;
option text = STRING_TOKEN(STR_TCG2_CLEAR), value = TCG2_PHYSICAL_PRESENCE_CLEAR, flags = RESET_REQUIRED;
option text = STRING_TOKEN(STR_TCG2_SET_PCD_BANKS), value = TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS, flags = RESET_REQUIRED;
suppressif ideqval TCG2_CONFIGURATION_INFO.ChangeEPSSupported == 0;
option text = STRING_TOKEN(STR_TCG2_CHANGE_EPS), value = TCG2_PHYSICAL_PRESENCE_CHANGE_EPS, flags = RESET_REQUIRED;
endif
option text = STRING_TOKEN(STR_TCG2_LOG_ALL_DIGESTS), value = TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS, flags = RESET_REQUIRED;
option text = STRING_TOKEN(STR_TCG2_DISABLE_ENDORSEMENT_ENABLE_STORAGE_HIERARCHY), value = TCG2_PHYSICAL_PRESENCE_DISABLE_ENDORSEMENT_ENABLE_STORAGE_HIERARCHY, flags = RESET_REQUIRED;
endoneof;

7
SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c
View File

@ -788,6 +788,7 @@ InstallTcg2ConfigForm (
CHAR16 TempBuffer[1024];
TCG2_CONFIGURATION_INFO Tcg2ConfigInfo;
TPM2_PTP_INTERFACE_TYPE TpmDeviceInterfaceDetected;
BOOLEAN IsCmdImp = FALSE;
DriverHandle = NULL;
ConfigAccess = &PrivateData->ConfigAccess;
@ -870,6 +871,12 @@ InstallTcg2ConfigForm (
HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TPM2_SUPPORTED_HASH_ALGO_CONTENT), TempBuffer, NULL);
}
Status = Tpm2GetCapabilityIsCommandImplemented (TPM_CC_ChangeEPS, &IsCmdImp);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Tpm2GetCapabilityIsCmdImpl fails %r\n", Status));
}
Tcg2ConfigInfo.ChangeEPSSupported = IsCmdImp;
FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), PcdGet32 (PcdTcg2HashAlgorithmBitmap));
HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_BIOS_HASH_ALGO_CONTENT), TempBuffer, NULL);

1
SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigNvData.h
View File

@ -70,6 +70,7 @@ typedef struct {
UINT8 TpmDeviceInterfaceAttempt;
BOOLEAN TpmDeviceInterfacePtpFifoSupported;
BOOLEAN TpmDeviceInterfacePtpCrbSupported;
BOOLEAN ChangeEPSSupported;
} TCG2_CONFIGURATION_INFO;
//