From 4f998a6c11ca05dc19bafe54ecd43ed74bd2cb3c Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Mon, 13 Sep 2021 22:20:59 +0800
Subject: [PATCH 3/8] SecrutiyPkg/Tcg: Import Tcg2PlatformDxe from
 edk2-platforms

Import Tcg2PlatformDxe from edk2-platforms without any modifications.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
---
 .../Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.c     | 85 +++++++++++++++++++
 .../Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.inf   | 44 ++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.c
 create mode 100644 SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.inf

diff --git a/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.c b/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.c
new file mode 100644
index 0000000000..150cf748ff
--- /dev/null
+++ b/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.c
@@ -0,0 +1,85 @@
+/** @file
+  Platform specific TPM2 component for configuring the Platform Hierarchy.
+
+  Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/TpmPlatformHierarchyLib.h>
+#include <Protocol/DxeSmmReadyToLock.h>
+
+/**
+   This callback function will run at the SmmReadyToLock event.
+
+   Configuration of the TPM's Platform Hierarchy Authorization Value (platformAuth)
+   and Platform Hierarchy Authorization Policy (platformPolicy) can be defined through this function.
+
+  @param  Event   Pointer to this event
+  @param  Context Event hanlder private data
+ **/
+VOID
+EFIAPI
+SmmReadyToLockEventCallBack (
+  IN EFI_EVENT  Event,
+  IN VOID       *Context
+  )
+{
+  EFI_STATUS   Status;
+  VOID         *Interface;
+
+  //
+  // Try to locate it because EfiCreateProtocolNotifyEvent will trigger it once when registration.
+  // Just return if it is not found.
+  //
+  Status = gBS->LocateProtocol (
+                  &gEfiDxeSmmReadyToLockProtocolGuid,
+                  NULL,
+                  &Interface
+                  );
+  if (EFI_ERROR (Status)) {
+    return ;
+  }
+
+  ConfigureTpmPlatformHierarchy ();
+
+  gBS->CloseEvent (Event);
+}
+
+/**
+   The driver's entry point. Will register a function for callback during SmmReadyToLock event to
+   configure the TPM's platform authorization.
+
+   @param[in] ImageHandle  The firmware allocated handle for the EFI image.
+   @param[in] SystemTable  A pointer to the EFI System Table.
+
+   @retval EFI_SUCCESS     The entry point is executed successfully.
+   @retval other           Some error occurs when executing this entry point.
+**/
+EFI_STATUS
+EFIAPI
+Tcg2PlatformDxeEntryPoint (
+  IN    EFI_HANDLE                  ImageHandle,
+  IN    EFI_SYSTEM_TABLE            *SystemTable
+  )
+{
+  VOID       *Registration;
+  EFI_EVENT  Event;
+
+  Event = EfiCreateProtocolNotifyEvent (
+            &gEfiDxeSmmReadyToLockProtocolGuid,
+            TPL_CALLBACK,
+            SmmReadyToLockEventCallBack,
+            NULL,
+            &Registration
+            );
+
+  ASSERT (Event != NULL);
+
+  return EFI_SUCCESS;
+}
diff --git a/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.inf b/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.inf
new file mode 100644
index 0000000000..af29c1cd98
--- /dev/null
+++ b/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.inf
@@ -0,0 +1,44 @@
+### @file
+# Platform specific TPM2 component.
+#
+# Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+###
+
+[Defines]
+  INF_VERSION                    = 0x00010017
+  BASE_NAME                      = Tcg2PlatformDxe
+  FILE_GUID                      = 5CAB08D5-AD8F-4d8b-B828-D17A8D9FE977
+  VERSION_STRING                 = 1.0
+  MODULE_TYPE                    = DXE_DRIVER
+  ENTRY_POINT                    = Tcg2PlatformDxeEntryPoint
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF
+#
+
+[LibraryClasses]
+  BaseLib
+  UefiBootServicesTableLib
+  UefiDriverEntryPoint
+  DebugLib
+  UefiLib
+  TpmPlatformHierarchyLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  MinPlatformPkg/MinPlatformPkg.dec
+  SecurityPkg/SecurityPkg.dec
+
+[Sources]
+  Tcg2PlatformDxe.c
+
+[Protocols]
+  gEfiDxeSmmReadyToLockProtocolGuid             ## SOMETIMES_CONSUMES ## NOTIFY
+
+[Depex]
+  gEfiTcg2ProtocolGuid
-- 
2.27.0

