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1 | /*++\r |
2 | \r |
3 | Copyright (c) 2006, Intel Corporation \r |
4 | All rights reserved. This program and the accompanying materials \r |
5 | are licensed and made available under the terms and conditions of the BSD License \r |
6 | which accompanies this distribution. The full text of the license may be found at \r |
7 | http://opensource.org/licenses/bsd-license.php \r |
8 | \r |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
11 | \r |
12 | Module Name:\r |
13 | \r |
14 | RuntimeLib.c\r |
15 | \r |
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16 | --*/\r |
17 | \r |
18 | #include <RuntimeLibInternal.h>\r |
19 | \r |
20 | //\r |
21 | // Driver Lib Module Globals\r |
22 | //\r |
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23 | \r |
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24 | STATIC EFI_EVENT mEfiVirtualNotifyEvent;\r |
25 | STATIC BOOLEAN mEfiGoneVirtual = FALSE;\r |
26 | STATIC BOOLEAN mEfiAtRuntime = FALSE;\r |
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27 | EFI_RUNTIME_SERVICES *mRT;\r |
28 | \r |
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29 | VOID\r |
30 | EFIAPI\r |
31 | RuntimeDriverExitBootServices (\r |
32 | IN EFI_EVENT Event,\r |
33 | IN VOID *Context\r |
34 | )\r |
35 | /*++\r |
36 | \r |
37 | Routine Description:\r |
38 | \r |
39 | Set AtRuntime flag as TRUE after ExitBootServices\r |
40 | \r |
41 | Arguments:\r |
42 | \r |
43 | Event - The Event that is being processed\r |
44 | \r |
45 | Context - Event Context\r |
46 | \r |
47 | Returns: \r |
48 | \r |
49 | None\r |
50 | \r |
51 | --*/\r |
52 | {\r |
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53 | //\r |
54 | // Clear out BootService globals\r |
55 | //\r |
56 | gBS = NULL;\r |
57 | \r |
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58 | mEfiAtRuntime = TRUE;\r |
59 | }\r |
60 | \r |
61 | STATIC\r |
62 | VOID\r |
63 | EFIAPI\r |
64 | RuntimeLibVirtualNotifyEvent (\r |
65 | IN EFI_EVENT Event,\r |
66 | IN VOID *Context\r |
67 | )\r |
68 | /*++\r |
69 | \r |
70 | Routine Description:\r |
71 | \r |
72 | Fixup internal data so that EFI can be call in virtual mode.\r |
73 | Call the passed in Child Notify event and convert any pointers in \r |
74 | lib to virtual mode.\r |
75 | \r |
76 | Arguments:\r |
77 | \r |
78 | Event - The Event that is being processed\r |
79 | \r |
80 | Context - Event Context\r |
81 | \r |
82 | Returns: \r |
83 | \r |
84 | None\r |
85 | \r |
86 | --*/\r |
87 | {\r |
88 | UINTN Index;\r |
89 | EFI_EVENT_NOTIFY ChildNotifyEventHandler;\r |
90 | \r |
91 | for (Index = 0; \r |
92 | _gDriverSetVirtualAddressMapEvent[Index] != NULL;\r |
93 | Index++) {\r |
94 | ChildNotifyEventHandler = _gDriverSetVirtualAddressMapEvent[Index];\r |
95 | ChildNotifyEventHandler (Event, NULL);\r |
96 | }\r |
97 | \r |
98 | //\r |
99 | // Update global for Runtime Services Table and IO\r |
100 | //\r |
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101 | EfiConvertPointer (0, (VOID **) &mRT);\r |
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102 | \r |
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103 | mEfiGoneVirtual = TRUE;\r |
104 | }\r |
105 | \r |
106 | EFI_STATUS\r |
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107 | EFIAPI\r |
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108 | RuntimeDriverLibConstruct (\r |
109 | IN EFI_HANDLE ImageHandle,\r |
110 | IN EFI_SYSTEM_TABLE *SystemTable\r |
111 | )\r |
112 | /*++\r |
113 | \r |
114 | Routine Description:\r |
115 | \r |
116 | Intialize runtime Driver Lib if it has not yet been initialized. \r |
117 | \r |
118 | Arguments:\r |
119 | \r |
120 | ImageHandle - The firmware allocated handle for the EFI image.\r |
121 | \r |
122 | SystemTable - A pointer to the EFI System Table.\r |
123 | \r |
124 | GoVirtualChildEvent - Caller can register a virtual notification event.\r |
125 | \r |
126 | Returns: \r |
127 | \r |
128 | EFI_STATUS always returns EFI_SUCCESS except EFI_ALREADY_STARTED if already started.\r |
129 | \r |
130 | --*/\r |
131 | {\r |
132 | EFI_STATUS Status;\r |
133 | \r |
134 | mRT = SystemTable->RuntimeServices;\r |
135 | \r |
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136 | //\r |
137 | // Register SetVirtualAddressMap () notify function\r |
138 | // \r |
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139 | if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {\r |
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140 | Status = gBS->CreateEvent (\r |
141 | EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,\r |
142 | EFI_TPL_NOTIFY,\r |
143 | RuntimeLibVirtualNotifyEvent,\r |
144 | NULL,\r |
145 | &mEfiVirtualNotifyEvent\r |
146 | );\r |
147 | \r |
148 | ASSERT_EFI_ERROR (Status);\r |
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149 | }\r |
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150 | \r |
151 | return EFI_SUCCESS;\r |
152 | }\r |
153 | \r |
154 | EFI_STATUS\r |
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155 | EFIAPI\r |
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156 | RuntimeDriverLibDeconstruct (\r |
157 | VOID\r |
158 | )\r |
159 | /*++\r |
160 | \r |
161 | Routine Description:\r |
162 | \r |
163 | This routine will free some resources which have been allocated in\r |
164 | EfiInitializeRuntimeDriverLib(). If a runtime driver exits with an error, \r |
165 | it must call this routine to free the allocated resource before the exiting.\r |
166 | \r |
167 | Arguments:\r |
168 | \r |
169 | None\r |
170 | \r |
171 | Returns: \r |
172 | \r |
173 | EFI_SUCCESS - Shotdown the Runtime Driver Lib successfully\r |
174 | EFI_UNSUPPORTED - Runtime Driver lib was not initialized at all\r |
175 | \r |
176 | --*/\r |
177 | {\r |
178 | EFI_STATUS Status;\r |
179 | \r |
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180 | //\r |
181 | // Close SetVirtualAddressMap () notify function\r |
182 | //\r |
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183 | if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {\r |
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184 | Status = gBS->CloseEvent (mEfiVirtualNotifyEvent);\r |
185 | ASSERT_EFI_ERROR (Status);\r |
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186 | }\r |
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187 | \r |
188 | return EFI_SUCCESS;\r |
189 | }\r |
190 | \r |
191 | BOOLEAN\r |
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192 | EFIAPI\r |
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193 | EfiAtRuntime (\r |
194 | VOID\r |
195 | )\r |
196 | /*++\r |
197 | \r |
198 | Routine Description:\r |
199 | Return TRUE if ExitBootServices () has been called\r |
200 | \r |
201 | Arguments:\r |
202 | NONE\r |
203 | \r |
204 | Returns: \r |
205 | TRUE - If ExitBootServices () has been called\r |
206 | \r |
207 | --*/\r |
208 | {\r |
209 | return mEfiAtRuntime;\r |
210 | }\r |
211 | \r |
212 | BOOLEAN\r |
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213 | EFIAPI\r |
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214 | EfiGoneVirtual (\r |
215 | VOID\r |
216 | )\r |
217 | /*++\r |
218 | \r |
219 | Routine Description:\r |
220 | Return TRUE if SetVirtualAddressMap () has been called\r |
221 | \r |
222 | Arguments:\r |
223 | NONE\r |
224 | \r |
225 | Returns: \r |
226 | TRUE - If SetVirtualAddressMap () has been called\r |
227 | \r |
228 | --*/\r |
229 | {\r |
230 | return mEfiGoneVirtual;\r |
231 | }\r |
232 | \r |