1 /** @file 2 DXE SMM Ready To Lock protocol introduced in the PI 1.2 specification. 3 4 According to PI 1.4a specification, this UEFI protocol indicates that 5 resources and services that should not be used by the third party code 6 are about to be locked. 7 This protocol is a mandatory protocol published by PI platform code. 8 This protocol in tandem with the End of DXE Event facilitates transition 9 of the platform from the environment where all of the components are 10 under the authority of the platform manufacturer to the environment where 11 third party extensible modules such as UEFI drivers and UEFI applications 12 are executed. The protocol is published immediately after signaling of the 13 End of DXE Event. PI modules that need to lock or protect their resources 14 in anticipation of the invocation of 3rd party extensible modules should 15 register for notification on installation of this protocol and effect the 16 appropriate protections in their notification handlers. For example, PI 17 platform code may choose to use notification handler to lock SMM by invoking 18 EFI_SMM_ACCESS2_PROTOCOL.Lock() function. 19 20 Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR> 21 This program and the accompanying materials 22 are licensed and made available under the terms and conditions of the BSD License 23 which accompanies this distribution. The full text of the license may be found at 24 http://opensource.org/licenses/bsd-license.php 25 26 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 27 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 28 29 **/ 30 31 #ifndef _DXE_SMM_READY_TO_LOCK_H_ 32 #define _DXE_SMM_READY_TO_LOCK_H_ 33 34 #define EFI_DXE_SMM_READY_TO_LOCK_PROTOCOL_GUID \ 35 { \ 36 0x60ff8964, 0xe906, 0x41d0, { 0xaf, 0xed, 0xf2, 0x41, 0xe9, 0x74, 0xe0, 0x8e } \ 37 } 38 39 extern EFI_GUID gEfiDxeSmmReadyToLockProtocolGuid; 40 41 #endif 42
