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