Tcg2PlatformDxe.c

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#include <PiDxe.h>
 
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/TpmPlatformHierarchyLib.h>
#include <Protocol/DxeSmmReadyToLock.h>
 
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);
}
 
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;
}