projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| cd70de1c MK |
1 | /** @file\r |
| 2 | Implements the GetCryptoServices() API that retuns a pointer to the EDK II\r | |
| 3 | Crypto Protocol.\r | |
| 4 | \r | |
| 5 | Copyright (C) Microsoft Corporation. All rights reserved.\r | |
| 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 7 | \r | |
| 8 | **/\r | |
| 9 | #include <PiDxe.h>\r | |
| 10 | #include <Library/BaseLib.h>\r | |
| 11 | #include <Library/DebugLib.h>\r | |
| 12 | #include <Library/UefiBootServicesTableLib.h>\r | |
| 13 | #include <Protocol/Crypto.h>\r | |
| 14 | \r | |
| 15 | EDKII_CRYPTO_PROTOCOL *mCryptoProtocol = NULL;\r | |
| 16 | \r | |
| 17 | /**\r | |
| 18 | Internal worker function that returns the pointer to an EDK II Crypto\r | |
| 19 | Protocol/PPI. The layout of the PPI, DXE Protocol, and SMM Protocol are\r | |
| 20 | identical which allows the implementation of the BaseCryptLib functions that\r | |
| 21 | call through a Protocol/PPI to be shared for the PEI, DXE, and SMM\r | |
| 22 | implementations.\r | |
| 23 | \r | |
| 24 | This DXE implementation returns the pointer to the EDK II Crypto Protocol\r | |
| 25 | that was found in the library constructor DxeCryptLibConstructor().\r | |
| 26 | **/\r | |
| 27 | VOID *\r | |
| 28 | GetCryptoServices (\r | |
| 29 | VOID\r | |
| 30 | )\r | |
| 31 | {\r | |
| 32 | return (VOID *)mCryptoProtocol;\r | |
| 33 | }\r | |
| 34 | \r | |
| 8acb61df G |
35 | /**\r |
| 36 | Locate the valid Crypto Protocol.\r | |
| 37 | \r | |
| 38 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
| 39 | @param SystemTable A pointer to the EFI System Table.\r | |
| 40 | \r | |
| 41 | @retval EFI_SUCCESS The constructor executed correctly.\r | |
| 42 | @retval EFI_NOT_FOUND Found no valid Crypto Protocol.\r | |
| 43 | **/\r | |
| cd70de1c MK |
44 | EFI_STATUS\r |
| 45 | EFIAPI\r | |
| 46 | DxeCryptLibConstructor (\r | |
| 47 | IN EFI_HANDLE ImageHandle,\r | |
| 48 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
| 49 | )\r | |
| 50 | {\r | |
| 51 | EFI_STATUS Status;\r | |
| 52 | UINTN Version;\r | |
| 53 | \r | |
| 54 | Status = gBS->LocateProtocol (\r | |
| 55 | &gEdkiiCryptoProtocolGuid,\r | |
| 56 | NULL,\r | |
| 57 | (VOID **)&mCryptoProtocol\r | |
| 58 | );\r | |
| 59 | \r | |
| 60 | if (EFI_ERROR (Status) || mCryptoProtocol == NULL) {\r | |
| 61 | DEBUG((DEBUG_ERROR, "[DxeCryptLib] Failed to locate Crypto Protocol. Status = %r\n", Status));\r | |
| 62 | ASSERT_EFI_ERROR (Status);\r | |
| 63 | ASSERT (mCryptoProtocol != NULL);\r | |
| 64 | mCryptoProtocol = NULL;\r | |
| 65 | return EFI_NOT_FOUND;\r | |
| 66 | }\r | |
| 67 | \r | |
| 68 | Version = mCryptoProtocol->GetVersion ();\r | |
| 69 | if (Version < EDKII_CRYPTO_VERSION) {\r | |
| 70 | DEBUG((DEBUG_ERROR, "[DxeCryptLib] Crypto Protocol unsupported version %d\n", Version));\r | |
| 71 | ASSERT (Version >= EDKII_CRYPTO_VERSION);\r | |
| 72 | mCryptoProtocol = NULL;\r | |
| 73 | return EFI_NOT_FOUND;\r | |
| 74 | }\r | |
| 75 | \r | |
| 76 | return EFI_SUCCESS;\r | |
| 77 | }\r |