SecuritPkg: Tcg2Smm: Add PlatformClass to TPM2 Table

[mirror_edk2.git] / SecurityPkg / Tcg / Tcg2Smm / Tcg2Smm.c

diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
index 0c3b19ca74cc894fc94d30b840f47e2857d983bb..5a1fd3e363c7202375b93c0feb389d4da1686ca1 100644 (file)
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
@@ -512,6 +512,16 @@ PublishTpm2 (
   mTpm2AcpiTemplate.Header.Revision = PcdGet8(PcdTpm2AcpiTableRev);\r
   DEBUG((DEBUG_INFO, "Tpm2 ACPI table revision is %d\n", mTpm2AcpiTemplate.Header.Revision));\r
 \r
+  //\r
+  // PlatformClass is only valid for version 4 and above\r
+  //    BIT0~15:  PlatformClass \r
+  //    BIT16~31: Reserved\r
+  //\r
+  if (mTpm2AcpiTemplate.Header.Revision >= EFI_TPM2_ACPI_TABLE_REVISION_4) {\r
+    mTpm2AcpiTemplate.Flags = (mTpm2AcpiTemplate.Flags & 0xFFFF0000) | PcdGet8(PcdTpmPlatformClass);\r
+    DEBUG((DEBUG_INFO, "Tpm2 ACPI table PlatformClass is %d\n", (mTpm2AcpiTemplate.Flags & 0x0000FFFF)));\r
+  }\r
+\r
   //\r
   // Measure to PCR[0] with event EV_POST_CODE ACPI DATA\r
   //\r