1 /** @file 2 DxeSmmReadyToLock Protocol on ExitPmAuth Protocol Thunk driver. 3 EDK platform uses ExitPmAuth point to lock SMRAM and SMM API. 4 But EDKII uses DxeSmmReadyToLock. We need a thunk driver to convert this event. 5 6 Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR> 7 8 This program and the accompanying materials 9 are licensed and made available under the terms and conditions 10 of the BSD License which accompanies this distribution. The 11 full text of the license may be found at 12 http://opensource.org/licenses/bsd-license.php 13 14 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 15 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 16 17 **/ 18 19 #include "DxeSmmReadyToLockOnExitPmAuthThunk.h" 20 21 /** 22 ExitPmAuth Protocol notification event handler. 23 24 @param[in] Event Event whose notification function is being invoked. 25 @param[in] Context Pointer to the notification function's context. 26 **/ 27 VOID 28 EFIAPI 29 ExitPmAuthProtocolNotification ( 30 IN EFI_EVENT Event, 31 IN VOID *Context 32 ) 33 { 34 EFI_STATUS Status; 35 EFI_HANDLE ImageHandle; 36 VOID *ExitPmAuth; 37 38 // 39 // Add more check to locate protocol after got event, because 40 // ECP will signal this event immediately once it is register 41 // just in case it is already installed. 42 // 43 Status = gBS->LocateProtocol ( 44 &gExitPmAuthProtocolGuid, 45 NULL, 46 &ExitPmAuth 47 ); 48 if (EFI_ERROR (Status)) { 49 return ; 50 } 51 52 // 53 // Install DxeSmmReadyToLock protocol to let PI SMM lock 54 // 55 ImageHandle = NULL; 56 Status = gBS->InstallProtocolInterface ( 57 &ImageHandle, 58 &gEfiDxeSmmReadyToLockProtocolGuid, 59 EFI_NATIVE_INTERFACE, 60 NULL 61 ); 62 ASSERT_EFI_ERROR (Status); 63 } 64 65 /** 66 Entry Point for DxeSmmReadyToLock Protocol on ExitPmAuth Protocol Thunk driver. 67 68 @param[in] ImageHandle Image handle of this driver. 69 @param[in] SystemTable A Pointer to the EFI System Table. 70 71 @retval EFI_SUCCESS The entry point is executed successfully. 72 **/ 73 EFI_STATUS 74 EFIAPI 75 DxeSmmReadyToLockMain ( 76 IN EFI_HANDLE ImageHandle, 77 IN EFI_SYSTEM_TABLE *SystemTable 78 ) 79 { 80 VOID *Registration; 81 82 // 83 // Install notifications for required protocols 84 // 85 EfiCreateProtocolNotifyEvent ( 86 &gExitPmAuthProtocolGuid, 87 TPL_CALLBACK, 88 ExitPmAuthProtocolNotification, 89 NULL, 90 &Registration 91 ); 92 93 return EFI_SUCCESS; 94 } 95
