Add TPM2 implementation.

signed off by: jiewen.yao@intel.com
reviewed by: guo.dong@intel.com

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14687 6f19259b-4bc3-4df7-8a09-765794883524

SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c

@@ -104,6 +104,20 @@ GLOBAL_VARIABLE_ENTRY mGlobalVariableList2[] = {
   {L"Key####",                               VARIABLE_ATTRIBUTE_NV_BS_RT},
 };
 
+/**
+
+  SecureBoot Hook for auth variable update.
+
+  @param[in] VariableName                 Name of Variable to be found.
+  @param[in] VendorGuid                   Variable vendor GUID.
+**/
+VOID
+EFIAPI
+SecureBootHook (
+  IN CHAR16                                 *VariableName,
+  IN EFI_GUID                               *VendorGuid
+  );
+
 /**
   Routine used to track statistical information about variable usage.
   The data is stored in the EFI system table so it can be accessed later.
@@ -2981,6 +2995,15 @@ Done:
   InterlockedDecrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState);
   ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);
 
+  if (!AtRuntime ()) {
+    if (!EFI_ERROR (Status)) {
+      SecureBootHook (
+        VariableName,
+        VendorGuid
+        );
+    }
+  }
+
   return Status;
 }