--- /dev/null
+/** @file\r
+ This file declares Capsule On Disk PPI. This PPI is used to find and load the\r
+ capsule on files that are relocated into a temp file under rootdir.\r
+\r
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
+\r
+**/\r
+\r
+#ifndef __PEI_CAPSULE_ON_DISK_PPI_H__\r
+#define __PEI_CAPSULE_ON_DISK_PPI_H__\r
+\r
+#define EFI_PEI_CAPSULE_ON_DISK_PPI_GUID \\r
+ { \\r
+ 0x71a9ea61, 0x5a35, 0x4a5d, {0xac, 0xef, 0x9c, 0xf8, 0x6d, 0x6d, 0x67, 0xe0 } \\r
+ }\r
+\r
+typedef struct _EFI_PEI_CAPSULE_ON_DISK_PPI EFI_PEI_CAPSULE_ON_DISK_PPI;\r
+\r
+/**\r
+ Loads a DXE capsule from some media into memory and updates the HOB table\r
+ with the DXE firmware volume information.\r
+\r
+ @param PeiServices General-purpose services that are available to every PEIM.\r
+ @param This Indicates the EFI_PEI_RECOVERY_MODULE_PPI instance.\r
+\r
+ @retval EFI_SUCCESS The capsule was loaded correctly.\r
+ @retval EFI_DEVICE_ERROR A device error occurred.\r
+ @retval EFI_NOT_FOUND A recovery DXE capsule cannot be found.\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EFI_PEI_LOAD_CAPSULE_ON_DISK)(\r
+ IN EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_CAPSULE_ON_DISK_PPI *This\r
+ );\r
+\r
+///\r
+/// Finds and loads the recovery files.\r
+///\r
+struct _EFI_PEI_CAPSULE_ON_DISK_PPI {\r
+ EFI_PEI_LOAD_CAPSULE_ON_DISK LoadCapsuleOnDisk; ///< Loads a DXE binary capsule into memory.\r
+};\r
+\r
+extern EFI_GUID gEdkiiPeiCapsuleOnDiskPpiGuid;\r
+\r
+#define EFI_PEI_BOOT_IN_CAPSULE_ON_DISK_MODE_PPI \\r
+ { \\r
+ 0xb08a11e4, 0xe2b7, 0x4b75, { 0xb5, 0x15, 0xaf, 0x61, 0x6, 0x68, 0xbf, 0xd1 } \\r
+ }\r
+\r
+extern EFI_GUID gEfiPeiBootInCapsuleOnDiskModePpiGuid;\r
+\r
+#endif\r