| 1 | /** @file\r |
| 2 | Get TPM 2.0 physical presence information.\r |
| 3 | \r |
| 4 | This library will get TPM 2.0 physical presence information.\r |
| 5 | \r |
| 6 | Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>\r |
| 7 | This program and the accompanying materials \r |
| 8 | are licensed and made available under the terms and conditions of the BSD License \r |
| 9 | which accompanies this distribution. The full text of the license may be found at \r |
| 10 | http://opensource.org/licenses/bsd-license.php\r |
| 11 | \r |
| 12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| 14 | \r |
| 15 | **/\r |
| 16 | \r |
| 17 | #include <PiPei.h>\r |
| 18 | \r |
| 19 | #include <Guid/Tcg2PhysicalPresenceData.h>\r |
| 20 | #include <Ppi/ReadOnlyVariable2.h>\r |
| 21 | \r |
| 22 | #include <Library/DebugLib.h>\r |
| 23 | #include <Library/PeiServicesLib.h>\r |
| 24 | #include <Library/PeiServicesTablePointerLib.h>\r |
| 25 | #include <Library/Tcg2PhysicalPresenceLib.h>\r |
| 26 | \r |
| 27 | /**\r |
| 28 | Return TPM2 ManagementFlags set by PP interface.\r |
| 29 | \r |
| 30 | @retval ManagementFlags TPM2 Management Flags.\r |
| 31 | **/\r |
| 32 | UINT32\r |
| 33 | EFIAPI\r |
| 34 | Tcg2PhysicalPresenceLibGetManagementFlags (\r |
| 35 | VOID\r |
| 36 | )\r |
| 37 | {\r |
| 38 | EFI_STATUS Status;\r |
| 39 | EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariablePpi;\r |
| 40 | EFI_TCG2_PHYSICAL_PRESENCE_FLAGS PpiFlags;\r |
| 41 | UINTN DataSize;\r |
| 42 | \r |
| 43 | Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);\r |
| 44 | ASSERT_EFI_ERROR (Status);\r |
| 45 | \r |
| 46 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);\r |
| 47 | Status = VariablePpi->GetVariable (\r |
| 48 | VariablePpi,\r |
| 49 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r |
| 50 | &gEfiTcg2PhysicalPresenceGuid,\r |
| 51 | NULL,\r |
| 52 | &DataSize,\r |
| 53 | &PpiFlags\r |
| 54 | );\r |
| 55 | if (EFI_ERROR (Status)) {\r |
| 56 | PpiFlags.PPFlags = TCG2_BIOS_TPM_MANAGEMENT_FLAG_DEFAULT | TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_DEFAULT;\r |
| 57 | }\r |
| 58 | return PpiFlags.PPFlags;\r |
| 59 | }\r |