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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 |