X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=SecurityPkg%2FTcg%2FTcg2Smm%2FTcg2Smm.c;h=1c2d8ba389a1e19b392cb800529218ab9d40beea;hp=b4974755b2bda32518e7af05ac619004124b840f;hb=3b5624b01454ed0ce1ae2089cc5b091a9cd07ed2;hpb=4ac4729eb71df262453ad37997319eb0df6b9d65

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
index b4974755b2..1c2d8ba389 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
@@ -50,18 +50,27 @@ GetPtpInterface (
   InterfaceId.Uint32 = MmioRead32 ((UINTN)&((PTP_CRB_REGISTERS *)Register)->InterfaceId);
   InterfaceCapability.Uint32 = MmioRead32 ((UINTN)&((PTP_FIFO_REGISTERS *)Register)->InterfaceCapability);
 
+  if (InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_TIS) {
+    return PtpInterfaceTis;
+  }
+
   if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_CRB) &&
       (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_CRB) &&
       (InterfaceId.Bits.CapCRB != 0)) {
     return PtpInterfaceCrb;
   }
+
   if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_FIFO) &&
       (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_FIFO) &&
       (InterfaceId.Bits.CapFIFO != 0) &&
       (InterfaceCapability.Bits.InterfaceVersion == INTERFACE_CAPABILITY_INTERFACE_VERSION_PTP)) {
     return PtpInterfaceFifo;
   }
-  return PtpInterfaceTis;
+
+  //
+  // No Ptp interface available
+  //
+  return PtpInterfaceMax;
 }
 
 EFI_TPM2_ACPI_TABLE  mTpm2AcpiTemplate = {
@@ -400,6 +409,7 @@ PublishTpm2 (
   case PtpInterfaceTis:
     break;
   default:
+    DEBUG((EFI_D_ERROR, "TPM2 InterfaceType get error! %d\n", InterfaceType));
     break;
   }