projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| c1d93242 JY |
1 | /** @file\r |
| 2 | Implement TPM1.2 Startup related command.\r | |
| 3 | \r | |
| 4 | Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>\r | |
| 5 | This program and the accompanying materials\r | |
| 6 | are licensed and made available under the terms and conditions of the BSD License\r | |
| 7 | which accompanies this distribution. The full text of the license may be found at\r | |
| 8 | http://opensource.org/licenses/bsd-license.php\r | |
| 9 | \r | |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 12 | \r | |
| 13 | **/\r | |
| 14 | \r | |
| 15 | #include <Uefi.h>\r | |
| 16 | #include <IndustryStandard/Tpm12.h>\r | |
| 17 | #include <Library/BaseMemoryLib.h>\r | |
| 18 | #include <Library/BaseLib.h>\r | |
| 19 | #include <Library/Tpm12DeviceLib.h>\r | |
| 20 | \r | |
| 21 | #pragma pack(1)\r | |
| 22 | \r | |
| 23 | typedef struct {\r | |
| 24 | TPM_RQU_COMMAND_HDR Hdr;\r | |
| 25 | } TPM_CMD_FORCE_CLEAR;\r | |
| 26 | \r | |
| 27 | typedef struct {\r | |
| 28 | TPM_RSP_COMMAND_HDR Hdr;\r | |
| 29 | } TPM_RSP_FORCE_CLEAR;\r | |
| 30 | \r | |
| 31 | #pragma pack()\r | |
| 32 | \r | |
| 33 | /**\r | |
| 34 | Send ForceClear command to TPM1.2.\r | |
| 35 | \r | |
| 36 | @retval EFI_SUCCESS Operation completed successfully.\r | |
| 37 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
| 38 | **/\r | |
| 39 | EFI_STATUS\r | |
| 40 | EFIAPI\r | |
| 41 | Tpm12ForceClear (\r | |
| 42 | VOID\r | |
| 43 | )\r | |
| 44 | {\r | |
| 45 | EFI_STATUS Status;\r | |
| 46 | UINT32 TpmRecvSize;\r | |
| 47 | UINT32 TpmSendSize;\r | |
| 48 | TPM_CMD_FORCE_CLEAR SendBuffer;\r | |
| 49 | TPM_RSP_FORCE_CLEAR RecvBuffer;\r | |
| 50 | UINT32 ReturnCode;\r | |
| 51 | \r | |
| 52 | //\r | |
| 53 | // send Tpm command TPM_ORD_ForceClear\r | |
| 54 | //\r | |
| 55 | TpmRecvSize = sizeof (TPM_RSP_FORCE_CLEAR);\r | |
| 56 | TpmSendSize = sizeof (TPM_CMD_FORCE_CLEAR);\r | |
| 57 | SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
| 58 | SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize);\r | |
| 59 | SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_ForceClear);\r | |
| 60 | \r | |
| 61 | Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 *)&SendBuffer, &TpmRecvSize, (UINT8 *)&RecvBuffer);\r | |
| 62 | if (EFI_ERROR (Status)) {\r | |
| 63 | return Status;\r | |
| 64 | }\r | |
| 65 | ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r | |
| 66 | switch (ReturnCode) {\r | |
| 67 | case TPM_SUCCESS:\r | |
| 68 | return EFI_SUCCESS;\r | |
| 69 | default:\r | |
| 70 | return EFI_DEVICE_ERROR;\r | |
| 71 | }\r | |
| 72 | } |