/** @file | |
DxeSmmReadyToLock Protocol on ExitPmAuth Protocol Thunk driver. | |
EDK platform uses ExitPmAuth point to lock SMRAM and SMM API. | |
But EDKII uses DxeSmmReadyToLock. We need a thunk driver to convert this event. | |
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions | |
of the BSD License which accompanies this distribution. The | |
full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include "DxeSmmReadyToLockOnExitPmAuthThunk.h" | |
/** | |
ExitPmAuth Protocol notification event handler. | |
@param[in] Event Event whose notification function is being invoked. | |
@param[in] Context Pointer to the notification function's context. | |
**/ | |
VOID | |
EFIAPI | |
ExitPmAuthProtocolNotification ( | |
IN EFI_EVENT Event, | |
IN VOID *Context | |
) | |
{ | |
EFI_STATUS Status; | |
EFI_HANDLE ImageHandle; | |
VOID *ExitPmAuth; | |
// | |
// Add more check to locate protocol after got event, because | |
// ECP will signal this event immediately once it is register | |
// just in case it is already installed. | |
// | |
Status = gBS->LocateProtocol ( | |
&gExitPmAuthProtocolGuid, | |
NULL, | |
&ExitPmAuth | |
); | |
if (EFI_ERROR (Status)) { | |
return ; | |
} | |
// | |
// Install DxeSmmReadyToLock protocol to let PI SMM lock | |
// | |
ImageHandle = NULL; | |
Status = gBS->InstallProtocolInterface ( | |
&ImageHandle, | |
&gEfiDxeSmmReadyToLockProtocolGuid, | |
EFI_NATIVE_INTERFACE, | |
NULL | |
); | |
ASSERT_EFI_ERROR (Status); | |
} | |
/** | |
Entry Point for DxeSmmReadyToLock Protocol on ExitPmAuth Protocol Thunk driver. | |
@param[in] ImageHandle Image handle of this driver. | |
@param[in] SystemTable A Pointer to the EFI System Table. | |
@retval EFI_SUCCESS The entry point is executed successfully. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
DxeSmmReadyToLockMain ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
VOID *Registration; | |
// | |
// Install notifications for required protocols | |
// | |
EfiCreateProtocolNotifyEvent ( | |
&gExitPmAuthProtocolGuid, | |
TPL_CALLBACK, | |
ExitPmAuthProtocolNotification, | |
NULL, | |
&Registration | |
); | |
return EFI_SUCCESS; | |
} |