projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| d09c1d4b MX |
1 | /** @file\r |
| 2 | TdxHelper Functions which are used in SEC phase\r | |
| 3 | \r | |
| 4 | Copyright (c) 2022 - 2023, Intel Corporation. All rights reserved.<BR>\r | |
| 5 | \r | |
| 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 7 | \r | |
| 8 | **/\r | |
| 9 | \r | |
| 10 | #include <PiPei.h>\r | |
| 11 | \r | |
| 12 | /**\r | |
| 13 | In Tdx guest, some information need to be passed from host VMM to guest\r | |
| 14 | firmware. For example, the memory resource, etc. These information are\r | |
| 15 | prepared by host VMM and put in TdHob which is described in TdxMetadata.\r | |
| 16 | TDVF processes the TdHob to accept memories.\r | |
| 17 | \r | |
| 18 | @retval EFI_SUCCESS Successfully process the TdHob\r | |
| 19 | @retval Others Other error as indicated\r | |
| 20 | **/\r | |
| 21 | EFI_STATUS\r | |
| 22 | EFIAPI\r | |
| 23 | TdxHelperProcessTdHob (\r | |
| 24 | VOID\r | |
| 25 | )\r | |
| 26 | {\r | |
| 27 | return EFI_UNSUPPORTED;\r | |
| 28 | }\r | |
| 29 | \r | |
| 30 | /**\r | |
| 31 | In Tdx guest, TdHob is passed from host VMM to guest firmware and it contains\r | |
| 32 | the information of the memory resource. From the security perspective before\r | |
| 33 | it is consumed, it should be measured and extended.\r | |
| 34 | *\r | |
| 35 | * @retval EFI_SUCCESS Successfully measure the TdHob\r | |
| 36 | * @retval Others Other error as indicated\r | |
| 37 | */\r | |
| 38 | EFI_STATUS\r | |
| 39 | EFIAPI\r | |
| 40 | TdxHelperMeasureTdHob (\r | |
| 41 | VOID\r | |
| 42 | )\r | |
| 43 | {\r | |
| 44 | return EFI_UNSUPPORTED;\r | |
| 45 | }\r | |
| 46 | \r | |
| 47 | /**\r | |
| 48 | * In Tdx guest, Configuration FV (CFV) is treated as external input because it\r | |
| 49 | * may contain the data provided by VMM. From the sucurity perspective Cfv image\r | |
| 50 | * should be measured before it is consumed.\r | |
| 51 | *\r | |
| 52 | * @retval EFI_SUCCESS Successfully measure the CFV image\r | |
| 53 | * @retval Others Other error as indicated\r | |
| 54 | */\r | |
| 55 | EFI_STATUS\r | |
| 56 | EFIAPI\r | |
| 57 | TdxHelperMeasureCfvImage (\r | |
| 58 | VOID\r | |
| 59 | )\r | |
| 60 | {\r | |
| 61 | return EFI_UNSUPPORTED;\r | |
| 62 | }\r | |
| 63 | \r | |
| 64 | /**\r | |
| 65 | Build the GuidHob for tdx measurements which were done in SEC phase.\r | |
| 66 | The measurement values are stored in WorkArea.\r | |
| 67 | \r | |
| 68 | @retval EFI_SUCCESS The GuidHob is built successfully\r | |
| 69 | @retval Others Other errors as indicated\r | |
| 70 | **/\r | |
| 71 | EFI_STATUS\r | |
| 72 | EFIAPI\r | |
| 73 | TdxHelperBuildGuidHobForTdxMeasurement (\r | |
| 74 | VOID\r | |
| 75 | )\r | |
| 76 | {\r | |
| 77 | return EFI_UNSUPPORTED;\r | |
| 78 | }\r |