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>
2021-09-13 22:20:59 +08:00
parent 4d5f39cd22
commit ebbc8ab2cd
2 changed files with 129 additions and 0 deletions
--- a/SecurityPkg/Tcg/Tcg2PlatformDxe/Tcg2PlatformDxe.c
+++ 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;
+}