| | 1 | /** @file\r |
| | 2 | CPU Features PEIM driver to initialize CPU features.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| | 6 | \r |
| | 7 | **/\r |
| | 8 | \r |
| | 9 | #include <PiPei.h>\r |
| | 10 | \r |
| | 11 | #include <Library/BaseLib.h>\r |
| | 12 | #include <Library/DebugLib.h>\r |
| | 13 | #include <Library/PeiServicesLib.h>\r |
| | 14 | #include <Library/RegisterCpuFeaturesLib.h>\r |
| | 15 | #include <Library/HobLib.h>\r |
| | 16 | \r |
| | 17 | #include <Guid/CpuFeaturesInitDone.h>\r |
| | 18 | \r |
| | 19 | EFI_PEI_PPI_DESCRIPTOR mPeiCpuFeaturesInitDonePpiDesc = {\r |
| | 20 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r |
| | 21 | &gEdkiiCpuFeaturesInitDoneGuid,\r |
| | 22 | NULL\r |
| | 23 | };\r |
| | 24 | \r |
| | 25 | /**\r |
| | 26 | CPU Features driver entry point function.\r |
| | 27 | \r |
| | 28 | It will perform CPU features initialization, except for\r |
| | 29 | PcdCpuFeaturesInitOnS3Resume is FALSE on S3 resume.\r |
| | 30 | \r |
| | 31 | @param FileHandle Handle of the file being invoked.\r |
| | 32 | @param PeiServices Describes the list of possible PEI Services.\r |
| | 33 | \r |
| | 34 | @retval EFI_SUCCESS CPU Features is initialized successfully.\r |
| | 35 | **/\r |
| | 36 | EFI_STATUS\r |
| | 37 | EFIAPI\r |
| | 38 | CpuFeaturesPeimInitialize (\r |
| | 39 | IN EFI_PEI_FILE_HANDLE FileHandle,\r |
| | 40 | IN CONST EFI_PEI_SERVICES **PeiServices\r |
| | 41 | )\r |
| | 42 | {\r |
| | 43 | EFI_STATUS Status;\r |
| | 44 | EFI_BOOT_MODE BootMode;\r |
| | 45 | \r |
| | 46 | Status = PeiServicesGetBootMode (&BootMode);\r |
| | 47 | ASSERT_EFI_ERROR (Status);\r |
| | 48 | \r |
| | 49 | if ((BootMode == BOOT_ON_S3_RESUME) &&\r |
| | 50 | !PcdGetBool (PcdCpuFeaturesInitOnS3Resume))\r |
| | 51 | {\r |
| | 52 | //\r |
| | 53 | // Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE\r |
| | 54 | // on S3 boot mode\r |
| | 55 | //\r |
| | 56 | return EFI_SUCCESS;\r |
| | 57 | }\r |
| | 58 | \r |
| | 59 | CpuFeaturesDetect ();\r |
| | 60 | \r |
| | 61 | CpuFeaturesInitialize ();\r |
| | 62 | \r |
| | 63 | //\r |
| | 64 | // Install CPU Features Init Done PPI\r |
| | 65 | //\r |
| | 66 | Status = PeiServicesInstallPpi (&mPeiCpuFeaturesInitDonePpiDesc);\r |
| | 67 | ASSERT_EFI_ERROR (Status);\r |
| | 68 | \r |
| | 69 | //\r |
| | 70 | // Build HOB to let CpuFeatureDxe driver skip the initialization process.\r |
| | 71 | //\r |
| | 72 | BuildGuidHob (&gEdkiiCpuFeaturesInitDoneGuid, 0);\r |
| | 73 | \r |
| | 74 | return EFI_SUCCESS;\r |
| | 75 | }\r |
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