projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 80c4b236 JF |
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 | |
| 0acd8697 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 80c4b236 JF |
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 | |
| bf5a306a | 15 | #include <Library/HobLib.h>\r |
| 80c4b236 JF |
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 | // Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE\r | |
| 53 | // on S3 boot mode\r | |
| 54 | //\r | |
| 55 | return EFI_SUCCESS;\r | |
| 56 | }\r | |
| 57 | \r | |
| 58 | CpuFeaturesDetect ();\r | |
| 59 | \r | |
| 60 | CpuFeaturesInitialize ();\r | |
| 61 | \r | |
| 62 | //\r | |
| 63 | // Install CPU Features Init Done PPI\r | |
| 64 | //\r | |
| 65 | Status = PeiServicesInstallPpi(&mPeiCpuFeaturesInitDonePpiDesc);\r | |
| 66 | ASSERT_EFI_ERROR (Status);\r | |
| 67 | \r | |
| bf5a306a ED |
68 | //\r |
| 69 | // Build HOB to let CpuFeatureDxe driver skip the initialization process.\r | |
| 70 | //\r | |
| 71 | BuildGuidHob (&gEdkiiCpuFeaturesInitDoneGuid, 0);\r | |
| 72 | \r | |
| 80c4b236 JF |
73 | return EFI_SUCCESS;\r |
| 74 | }\r | |
| 75 | \r |