]>
Commit | Line | Data |
---|---|---|
80c4b236 JF |
1 | /** @file\r |
2 | CPU Features DXE driver to initialize CPU features.\r | |
3 | \r | |
4 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <PiDxe.h>\r | |
16 | \r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/UefiLib.h>\r | |
20 | #include <Library/UefiBootServicesTableLib.h>\r | |
21 | #include <Library/RegisterCpuFeaturesLib.h>\r | |
bf5a306a | 22 | #include <Library/HobLib.h>\r |
80c4b236 JF |
23 | \r |
24 | #include <Protocol/SmmConfiguration.h>\r | |
25 | #include <Guid/CpuFeaturesInitDone.h>\r | |
26 | \r | |
27 | \r | |
28 | /**\r | |
29 | Worker function to perform CPU feature initialization.\r | |
30 | \r | |
31 | **/\r | |
32 | VOID\r | |
33 | CpuFeaturesInitializeWorker (\r | |
34 | VOID\r | |
35 | )\r | |
36 | {\r | |
37 | EFI_STATUS Status;\r | |
38 | EFI_HANDLE Handle;\r | |
39 | \r | |
40 | CpuFeaturesDetect ();\r | |
41 | \r | |
42 | CpuFeaturesInitialize ();\r | |
43 | \r | |
44 | //\r | |
45 | // Install CPU Features Init Done Protocol\r | |
46 | //\r | |
47 | Handle = NULL;\r | |
48 | Status = gBS->InstallProtocolInterface (\r | |
49 | &Handle,\r | |
50 | &gEdkiiCpuFeaturesInitDoneGuid,\r | |
51 | EFI_NATIVE_INTERFACE,\r | |
52 | NULL\r | |
53 | );\r | |
54 | ASSERT_EFI_ERROR (Status);\r | |
55 | }\r | |
56 | \r | |
57 | /**\r | |
58 | Event notification that initialize CPU features when gEfiSmmConfigurationProtocol installs.\r | |
59 | \r | |
60 | @param[in] Event The Event that is being processed, not used.\r | |
61 | @param[in] Context Event Context, not used.\r | |
62 | **/\r | |
63 | VOID\r | |
64 | EFIAPI\r | |
65 | SmmConfigurationEventNotify (\r | |
66 | IN EFI_EVENT Event,\r | |
67 | IN VOID *Context\r | |
68 | )\r | |
69 | {\r | |
70 | EFI_STATUS Status;\r | |
71 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r | |
72 | \r | |
73 | //\r | |
74 | // Make sure this notification is for this handler\r | |
75 | //\r | |
76 | Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **)&SmmConfiguration);\r | |
77 | if (EFI_ERROR (Status)) {\r | |
78 | return;\r | |
79 | }\r | |
80 | \r | |
81 | CpuFeaturesInitializeWorker ();\r | |
82 | }\r | |
83 | \r | |
84 | /**\r | |
85 | CPU Features driver entry point function.\r | |
86 | \r | |
87 | If PcdCpuFeaturesInitAfterSmmRelocation is TRUE, it will register one\r | |
88 | SMM Configuration Protocol notify function to perform CPU features\r | |
89 | initialization. Otherwise, it will perform CPU features initialization\r | |
90 | directly.\r | |
91 | \r | |
92 | @param ImageHandle Image handle this driver.\r | |
93 | @param SystemTable Pointer to the System Table.\r | |
94 | \r | |
95 | @retval EFI_SUCCESS CPU Features is initialized successfully.\r | |
96 | **/\r | |
97 | EFI_STATUS\r | |
98 | EFIAPI\r | |
99 | CpuFeaturesDxeInitialize (\r | |
100 | IN EFI_HANDLE ImageHandle,\r | |
101 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
102 | )\r | |
103 | {\r | |
104 | VOID *Registration;\r | |
bf5a306a ED |
105 | EFI_STATUS Status;\r |
106 | EFI_HANDLE Handle;\r | |
107 | \r | |
108 | if (GetFirstGuidHob (&gEdkiiCpuFeaturesInitDoneGuid) != NULL) {\r | |
109 | //\r | |
110 | // Try to find HOB first. This HOB exist means CPU features have \r | |
111 | // been initialized by CpuFeaturesPei driver, just install \r | |
112 | // gEdkiiCpuFeaturesInitDoneGuid.\r | |
113 | //\r | |
114 | Handle = NULL;\r | |
115 | Status = gBS->InstallProtocolInterface (\r | |
116 | &Handle,\r | |
117 | &gEdkiiCpuFeaturesInitDoneGuid,\r | |
118 | EFI_NATIVE_INTERFACE,\r | |
119 | NULL\r | |
120 | );\r | |
121 | ASSERT_EFI_ERROR (Status);\r | |
122 | return Status;\r | |
123 | }\r | |
80c4b236 JF |
124 | \r |
125 | if (PcdGetBool (PcdCpuFeaturesInitAfterSmmRelocation)) {\r | |
126 | //\r | |
127 | // Install notification callback on SMM Configuration Protocol\r | |
128 | //\r | |
129 | EfiCreateProtocolNotifyEvent (\r | |
130 | &gEfiSmmConfigurationProtocolGuid,\r | |
131 | TPL_CALLBACK,\r | |
132 | SmmConfigurationEventNotify,\r | |
133 | NULL,\r | |
134 | &Registration\r | |
135 | );\r | |
136 | } else {\r | |
137 | CpuFeaturesInitializeWorker ();\r | |
138 | }\r | |
139 | \r | |
140 | return EFI_SUCCESS;\r | |
141 | }\r | |
142 | \r |