blob: be559a959555048dda3932f076cc06e803b01f32 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/** @file
CPU Features PEIM driver to initialize CPU features.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/RegisterCpuFeaturesLib.h>
#include <Library/HobLib.h>
#include <Guid/CpuFeaturesInitDone.h>
EFI_PEI_PPI_DESCRIPTOR mPeiCpuFeaturesInitDonePpiDesc = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEdkiiCpuFeaturesInitDoneGuid,
NULL
};
/**
CPU Features driver entry point function.
It will perform CPU features initialization, except for
PcdCpuFeaturesInitOnS3Resume is FALSE on S3 resume.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCCESS CPU Features is initialized successfully.
**/
EFI_STATUS
EFIAPI
CpuFeaturesPeimInitialize (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_BOOT_MODE BootMode;
Status = PeiServicesGetBootMode (&BootMode);
ASSERT_EFI_ERROR (Status);
if (BootMode == BOOT_ON_S3_RESUME &&
!PcdGetBool (PcdCpuFeaturesInitOnS3Resume)) {
//
// Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE
// on S3 boot mode
//
return EFI_SUCCESS;
}
CpuFeaturesDetect ();
CpuFeaturesInitialize ();
//
// Install CPU Features Init Done PPI
//
Status = PeiServicesInstallPpi(&mPeiCpuFeaturesInitDonePpiDesc);
ASSERT_EFI_ERROR (Status);
//
// Build HOB to let CpuFeatureDxe driver skip the initialization process.
//
BuildGuidHob (&gEdkiiCpuFeaturesInitDoneGuid, 0);
return EFI_SUCCESS;
}
|
