SecurityPkg: Tpm2DeviceLib: Enable CapCRBIdleBypass support

Directly transition from CMD completion to CMD Ready state if device
supports IdleByPass

Cc: Long Qin <qin.long@intel.com>
Cc: Yao Jiewen <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Long Qin <qin.long@intel.com>

SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.c

@@ -31,6 +31,18 @@ Tpm2GetPtpInterface (
   IN VOID *Register
   );
 
+/**
+  Return PTP CRB interface IdleByPass state.
+
+  @param[in] Register                Pointer to PTP register.
+
+  @return PTP CRB interface IdleByPass state.
+**/
+UINT8
+Tpm2GetIdleByPass (
+  IN VOID *Register
+  );
+
 /**
   This service enables the sending of commands to the TPM2.
 
@@ -140,6 +152,7 @@ Tpm2DeviceLibConstructor (
   )
 {
   TPM2_PTP_INTERFACE_TYPE  PtpInterface;
+  UINT8                    IdleByPass;
 
   //
   // Cache current active TpmInterfaceType only when needed
@@ -148,5 +161,11 @@ Tpm2DeviceLibConstructor (
     PtpInterface = Tpm2GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
     PcdSet8S(PcdActiveTpmInterfaceType, PtpInterface);
   }
+
+  if (PcdGet8(PcdActiveTpmInterfaceType) == PtpInterfaceCrb && PcdGet8(PcdCRBIdleByPass) == 0xFF) {
+    IdleByPass = Tpm2GetIdleByPass((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
+    PcdSet8S(PcdCRBIdleByPass, IdleByPass);
+  }
+
   return EFI_SUCCESS;
 }