2 The EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL is related to EDK II-specific implementation
3 and used to abstract the swap operation of boot block and backup block of FV in EFI
4 SMM environment. This swap is especially needed when updating the boot block of FV.
5 If a power failure happens during the boot block update, the swapped backup block
6 (now the boot block) can boot the machine with the old boot block backed up in it.
7 The swap operation is platform dependent, so other protocols such as SMM FTW (Fault
8 Tolerant Write) should use this protocol instead of handling hardware directly.
10 Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
11 SPDX-License-Identifier: BSD-2-Clause-Patent
15 #ifndef __SMM_SWAP_ADDRESS_RANGE_H__
16 #define __SMM_SWAP_ADDRESS_RANGE_H__
18 #include <Protocol/SwapAddressRange.h>
20 #define EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL_GUID \
22 0x67c4f112, 0x3385, 0x4e55, { 0x9c, 0x5b, 0xc0, 0x5b, 0x71, 0x7c, 0x42, 0x28 } \
26 // SMM Swap Address Range protocol structure is the same as Swap Address Range protocol.
27 // The SMM one is intend to run in SMM environment, which means it can be used by
28 // SMM drivers after ExitPmAuth.
30 typedef EFI_SWAP_ADDRESS_RANGE_PROTOCOL EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL
;
32 extern EFI_GUID gEfiSmmSwapAddressRangeProtocolGuid
;