| 1 | /** @file
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| 2 | The EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL is related to EDK II-specific implementation
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| 3 | and used to abstract the swap operation of boot block and backup block of FV in EFI
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| 4 | SMM environment. This swap is especially needed when updating the boot block of FV.
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| 5 | If a power failure happens during the boot block update, the swapped backup block
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| 6 | (now the boot block) can boot the machine with the old boot block backed up in it.
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| 7 | The swap operation is platform dependent, so other protocols such as SMM FTW (Fault
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| 8 | Tolerant Write) should use this protocol instead of handling hardware directly.
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| 9 |
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| 10 | Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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| 11 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 12 |
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| 13 | **/
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| 14 |
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| 15 | #ifndef __SMM_SWAP_ADDRESS_RANGE_H__
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| 16 | #define __SMM_SWAP_ADDRESS_RANGE_H__
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| 17 |
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| 18 | #include <Protocol/SwapAddressRange.h>
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| 19 |
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| 20 | #define EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL_GUID \
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| 21 | { \
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| 22 | 0x67c4f112, 0x3385, 0x4e55, { 0x9c, 0x5b, 0xc0, 0x5b, 0x71, 0x7c, 0x42, 0x28 } \
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| 23 | }
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| 24 |
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| 25 | //
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| 26 | // SMM Swap Address Range protocol structure is the same as Swap Address Range protocol.
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| 27 | // The SMM one is intend to run in SMM environment, which means it can be used by
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| 28 | // SMM drivers after ExitPmAuth.
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| 29 | //
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| 30 | typedef EFI_SWAP_ADDRESS_RANGE_PROTOCOL EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL;
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| 31 |
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| 32 | extern EFI_GUID gEfiSmmSwapAddressRangeProtocolGuid;
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| 33 |
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| 34 | #endif
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