diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdeModulePkg/Include/Protocol/SmmSwapAddressRange.h | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdeModulePkg/Include/Protocol/SmmSwapAddressRange.h')
| -rw-r--r-- | roms/edk2/MdeModulePkg/Include/Protocol/SmmSwapAddressRange.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Include/Protocol/SmmSwapAddressRange.h b/roms/edk2/MdeModulePkg/Include/Protocol/SmmSwapAddressRange.h new file mode 100644 index 000000000..d2c9fc554 --- /dev/null +++ b/roms/edk2/MdeModulePkg/Include/Protocol/SmmSwapAddressRange.h @@ -0,0 +1,34 @@ +/** @file
+ The EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL is related to EDK II-specific implementation
+ and used to abstract the swap operation of boot block and backup block of FV in EFI
+ SMM environment. This swap is especially needed when updating the boot block of FV.
+ If a power failure happens during the boot block update, the swapped backup block
+ (now the boot block) can boot the machine with the old boot block backed up in it.
+ The swap operation is platform dependent, so other protocols such as SMM FTW (Fault
+ Tolerant Write) should use this protocol instead of handling hardware directly.
+
+Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __SMM_SWAP_ADDRESS_RANGE_H__
+#define __SMM_SWAP_ADDRESS_RANGE_H__
+
+#include <Protocol/SwapAddressRange.h>
+
+#define EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL_GUID \
+ { \
+ 0x67c4f112, 0x3385, 0x4e55, { 0x9c, 0x5b, 0xc0, 0x5b, 0x71, 0x7c, 0x42, 0x28 } \
+ }
+
+//
+// SMM Swap Address Range protocol structure is the same as Swap Address Range protocol.
+// The SMM one is intend to run in SMM environment, which means it can be used by
+// SMM drivers after ExitPmAuth.
+//
+typedef EFI_SWAP_ADDRESS_RANGE_PROTOCOL EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL;
+
+extern EFI_GUID gEfiSmmSwapAddressRangeProtocolGuid;
+
+#endif
|