| 1 | /** @file\r |
| 2 | Sample to provide SecGetPerformance function.\r |
| 3 | \r |
| 4 | Copyright (c) 2014, 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 <PiPei.h>\r |
| 16 | \r |
| 17 | #include <Ppi/SecPerformance.h>\r |
| 18 | #include <Ppi/TopOfTemporaryRam.h>\r |
| 19 | \r |
| 20 | #include <Library/BaseMemoryLib.h>\r |
| 21 | #include <Library/TimerLib.h>\r |
| 22 | #include <Library/DebugLib.h>\r |
| 23 | \r |
| 24 | /**\r |
| 25 | This interface conveys performance information out of the Security (SEC) phase into PEI.\r |
| 26 | \r |
| 27 | This service is published by the SEC phase. The SEC phase handoff has an optional\r |
| 28 | EFI_PEI_PPI_DESCRIPTOR list as its final argument when control is passed from SEC into the\r |
| 29 | PEI Foundation. As such, if the platform supports collecting performance data in SEC,\r |
| 30 | this information is encapsulated into the data structure abstracted by this service.\r |
| 31 | This information is collected for the boot-strap processor (BSP) on IA-32.\r |
| 32 | \r |
| 33 | @param[in] PeiServices The pointer to the PEI Services Table.\r |
| 34 | @param[in] This The pointer to this instance of the PEI_SEC_PERFORMANCE_PPI.\r |
| 35 | @param[out] Performance The pointer to performance data collected in SEC phase.\r |
| 36 | \r |
| 37 | @retval EFI_SUCCESS The data was successfully returned.\r |
| 38 | \r |
| 39 | **/\r |
| 40 | EFI_STATUS\r |
| 41 | EFIAPI\r |
| 42 | SecGetPerformance (\r |
| 43 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 44 | IN PEI_SEC_PERFORMANCE_PPI *This,\r |
| 45 | OUT FIRMWARE_SEC_PERFORMANCE *Performance\r |
| 46 | )\r |
| 47 | {\r |
| 48 | UINT32 Size;\r |
| 49 | UINT32 Count;\r |
| 50 | UINT32 TopOfTemporaryRam;\r |
| 51 | UINT64 Ticker;\r |
| 52 | VOID *TopOfTemporaryRamPpi;\r |
| 53 | EFI_STATUS Status;\r |
| 54 | \r |
| 55 | DEBUG ((DEBUG_INFO, "SecGetPerformance\n"));\r |
| 56 | \r |
| 57 | Status = (*PeiServices)->LocatePpi (\r |
| 58 | PeiServices,\r |
| 59 | &gTopOfTemporaryRamPpiGuid,\r |
| 60 | 0,\r |
| 61 | NULL,\r |
| 62 | (VOID **) &TopOfTemporaryRamPpi\r |
| 63 | );\r |
| 64 | if (EFI_ERROR (Status)) {\r |
| 65 | return EFI_NOT_FOUND;\r |
| 66 | }\r |
| 67 | \r |
| 68 | //\r |
| 69 | // |--------------| <- TopOfTemporaryRam\r |
| 70 | // |Number of BSPs|\r |
| 71 | // |--------------|\r |
| 72 | // | BIST |\r |
| 73 | // |--------------|\r |
| 74 | // | .... |\r |
| 75 | // |--------------|\r |
| 76 | // | TSC[63:32] |\r |
| 77 | // |--------------|\r |
| 78 | // | TSC[31:00] |\r |
| 79 | // |--------------|\r |
| 80 | //\r |
| 81 | TopOfTemporaryRam = (UINT32)(UINTN)TopOfTemporaryRamPpi - sizeof(UINT32);\r |
| 82 | TopOfTemporaryRam -= sizeof(UINT32) * 2;\r |
| 83 | Count = *(UINT32 *) (UINTN) (TopOfTemporaryRam - sizeof (UINT32));\r |
| 84 | Size = Count * sizeof (UINT64);\r |
| 85 | \r |
| 86 | Ticker = *(UINT64 *) (UINTN) (TopOfTemporaryRam - sizeof (UINT32) - Size - sizeof (UINT32) * 2);\r |
| 87 | Performance->ResetEnd = GetTimeInNanoSecond (Ticker);\r |
| 88 | \r |
| 89 | return EFI_SUCCESS;\r |
| 90 | }\r |