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1 | /** @file |
2 | CPU Features PEIM driver to initialize CPU features. | |
3 | ||
4 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> | |
5 | This program and the accompanying materials | |
6 | are licensed and made available under the terms and conditions of the BSD License | |
7 | which accompanies this distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | ||
15 | #include <PiPei.h> | |
16 | ||
17 | #include <Library/BaseLib.h> | |
18 | #include <Library/DebugLib.h> | |
19 | #include <Library/PeiServicesLib.h> | |
20 | #include <Library/RegisterCpuFeaturesLib.h> | |
21 | ||
22 | #include <Guid/CpuFeaturesInitDone.h> | |
23 | ||
24 | EFI_PEI_PPI_DESCRIPTOR mPeiCpuFeaturesInitDonePpiDesc = { | |
25 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), | |
26 | &gEdkiiCpuFeaturesInitDoneGuid, | |
27 | NULL | |
28 | }; | |
29 | ||
30 | /** | |
31 | CPU Features driver entry point function. | |
32 | ||
33 | It will perform CPU features initialization, except for | |
34 | PcdCpuFeaturesInitOnS3Resume is FALSE on S3 resume. | |
35 | ||
36 | @param FileHandle Handle of the file being invoked. | |
37 | @param PeiServices Describes the list of possible PEI Services. | |
38 | ||
39 | @retval EFI_SUCCESS CPU Features is initialized successfully. | |
40 | **/ | |
41 | EFI_STATUS | |
42 | EFIAPI | |
43 | CpuFeaturesPeimInitialize ( | |
44 | IN EFI_PEI_FILE_HANDLE FileHandle, | |
45 | IN CONST EFI_PEI_SERVICES **PeiServices | |
46 | ) | |
47 | { | |
48 | EFI_STATUS Status; | |
49 | EFI_BOOT_MODE BootMode; | |
50 | ||
51 | Status = PeiServicesGetBootMode (&BootMode); | |
52 | ASSERT_EFI_ERROR (Status); | |
53 | ||
54 | if (BootMode == BOOT_ON_S3_RESUME && | |
55 | !PcdGetBool (PcdCpuFeaturesInitOnS3Resume)) { | |
56 | // | |
57 | // Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE | |
58 | // on S3 boot mode | |
59 | // | |
60 | return EFI_SUCCESS; | |
61 | } | |
62 | ||
63 | CpuFeaturesDetect (); | |
64 | ||
65 | CpuFeaturesInitialize (); | |
66 | ||
67 | // | |
68 | // Install CPU Features Init Done PPI | |
69 | // | |
70 | Status = PeiServicesInstallPpi(&mPeiCpuFeaturesInitDonePpiDesc); | |
71 | ASSERT_EFI_ERROR (Status); | |
72 | ||
73 | return EFI_SUCCESS; | |
74 | } | |
75 |