878ddf1f |
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 |
878ddf1f |
16 | --*/\r |
17 | \r |
878ddf1f |
18 | #include <RuntimeLibInternal.h>\r |
19 | \r |
20 | //\r |
21 | // Driver Lib Module Globals\r |
22 | //\r |
f1cd55fe |
23 | static EFI_EVENT mEfiVirtualNotifyEvent;\r |
24 | EFI_RUNTIME_SERVICES *mRT;\r |
878ddf1f |
25 | \r |
878ddf1f |
26 | VOID\r |
27 | EFIAPI\r |
28 | RuntimeDriverExitBootServices (\r |
29 | IN EFI_EVENT Event,\r |
30 | IN VOID *Context\r |
31 | )\r |
32 | /*++\r |
33 | \r |
34 | Routine Description:\r |
35 | \r |
36 | Set AtRuntime flag as TRUE after ExitBootServices\r |
37 | \r |
38 | Arguments:\r |
39 | \r |
40 | Event - The Event that is being processed\r |
41 | \r |
42 | Context - Event Context\r |
43 | \r |
44 | Returns: \r |
45 | \r |
46 | None\r |
47 | \r |
48 | --*/\r |
49 | {\r |
f1cd55fe |
50 | if (EfiAtRuntime()) {\r |
51 | return;\r |
878ddf1f |
52 | }\r |
53 | }\r |
54 | \r |
1cc8ee78 |
55 | STATIC\r |
878ddf1f |
56 | VOID\r |
57 | EFIAPI\r |
58 | RuntimeLibVirtualNotifyEvent (\r |
59 | IN EFI_EVENT Event,\r |
60 | IN VOID *Context\r |
61 | )\r |
62 | /*++\r |
63 | \r |
64 | Routine Description:\r |
65 | \r |
66 | Fixup internal data so that EFI can be call in virtual mode.\r |
67 | Call the passed in Child Notify event and convert any pointers in \r |
68 | lib to virtual mode.\r |
69 | \r |
70 | Arguments:\r |
71 | \r |
72 | Event - The Event that is being processed\r |
73 | \r |
74 | Context - Event Context\r |
75 | \r |
76 | Returns: \r |
77 | \r |
78 | None\r |
79 | \r |
80 | --*/\r |
81 | {\r |
f1cd55fe |
82 | UINTN Index;\r |
878ddf1f |
83 | EFI_EVENT_NOTIFY ChildNotifyEventHandler;\r |
84 | \r |
85 | for (Index = 0; _gDriverSetVirtualAddressMapEvent[Index] != NULL; Index++) {\r |
86 | ChildNotifyEventHandler = _gDriverSetVirtualAddressMapEvent[Index];\r |
87 | ChildNotifyEventHandler (Event, NULL);\r |
88 | }\r |
89 | \r |
c25aaa00 |
90 | //\r |
91 | // Update global for Runtime Services Table\r |
92 | //\r |
93 | EfiConvertPointer (0, (VOID **) &mRT);\r |
878ddf1f |
94 | }\r |
95 | \r |
96 | EFI_STATUS\r |
a5e465a7 |
97 | EFIAPI\r |
878ddf1f |
98 | RuntimeDriverLibConstruct (\r |
99 | IN EFI_HANDLE ImageHandle,\r |
100 | IN EFI_SYSTEM_TABLE *SystemTable\r |
101 | )\r |
102 | /*++\r |
103 | \r |
104 | Routine Description:\r |
105 | \r |
106 | Intialize runtime Driver Lib if it has not yet been initialized. \r |
107 | \r |
108 | Arguments:\r |
109 | \r |
110 | ImageHandle - The firmware allocated handle for the EFI image.\r |
111 | \r |
112 | SystemTable - A pointer to the EFI System Table.\r |
113 | \r |
114 | GoVirtualChildEvent - Caller can register a virtual notification event.\r |
115 | \r |
116 | Returns: \r |
117 | \r |
118 | EFI_STATUS always returns EFI_SUCCESS except EFI_ALREADY_STARTED if already started.\r |
119 | \r |
120 | --*/\r |
121 | {\r |
878ddf1f |
122 | EFI_STATUS Status;\r |
123 | \r |
124 | mRT = SystemTable->RuntimeServices;\r |
125 | \r |
878ddf1f |
126 | //\r |
127 | // Register SetVirtualAddressMap () notify function\r |
128 | //\r |
f1cd55fe |
129 | if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {\r |
130 | Status = gBS->CreateEvent (\r |
131 | EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,\r |
132 | EFI_TPL_NOTIFY,\r |
133 | RuntimeLibVirtualNotifyEvent,\r |
134 | NULL,\r |
135 | &mEfiVirtualNotifyEvent\r |
136 | );\r |
137 | ASSERT_EFI_ERROR (Status);\r |
138 | }\r |
878ddf1f |
139 | \r |
140 | return EFI_SUCCESS;\r |
141 | }\r |
142 | \r |
143 | EFI_STATUS\r |
a5e465a7 |
144 | EFIAPI\r |
878ddf1f |
145 | RuntimeDriverLibDeconstruct (\r |
f9081b64 |
146 | IN EFI_HANDLE ImageHandle,\r |
147 | IN EFI_SYSTEM_TABLE *SystemTable\r |
878ddf1f |
148 | )\r |
149 | /*++\r |
150 | \r |
151 | Routine Description:\r |
152 | \r |
153 | This routine will free some resources which have been allocated in\r |
154 | EfiInitializeRuntimeDriverLib(). If a runtime driver exits with an error, \r |
155 | it must call this routine to free the allocated resource before the exiting.\r |
156 | \r |
157 | Arguments:\r |
158 | \r |
159 | None\r |
160 | \r |
161 | Returns: \r |
162 | \r |
163 | EFI_SUCCESS - Shotdown the Runtime Driver Lib successfully\r |
164 | EFI_UNSUPPORTED - Runtime Driver lib was not initialized at all\r |
165 | \r |
166 | --*/\r |
167 | {\r |
168 | EFI_STATUS Status;\r |
169 | \r |
878ddf1f |
170 | //\r |
171 | // Close SetVirtualAddressMap () notify function\r |
172 | //\r |
f1cd55fe |
173 | if (_gDriverSetVirtualAddressMapEvent[0] != NULL) {\r |
174 | Status = gBS->CloseEvent (mEfiVirtualNotifyEvent);\r |
175 | ASSERT_EFI_ERROR (Status);\r |
176 | }\r |
878ddf1f |
177 | \r |
178 | return EFI_SUCCESS;\r |
179 | }\r |
180 | \r |
181 | BOOLEAN\r |
e8a3bee0 |
182 | EFIAPI\r |
878ddf1f |
183 | EfiAtRuntime (\r |
184 | VOID\r |
185 | )\r |
186 | /*++\r |
187 | \r |
188 | Routine Description:\r |
189 | Return TRUE if ExitBootService () has been called\r |
190 | \r |
191 | Arguments:\r |
192 | NONE\r |
193 | \r |
194 | Returns: \r |
195 | TRUE - If ExitBootService () has been called\r |
196 | \r |
197 | --*/\r |
198 | {\r |
e8d4831b |
199 | EFI_GUID Guid;\r |
878ddf1f |
200 | SAL_RETURN_REGS ReturnReg;\r |
201 | \r |
e8d4831b |
202 | *((UINT64 *) &Guid) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_LO;\r |
203 | *(((UINT64 *)&Guid) + 1) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_HI;\r |
204 | \r |
878ddf1f |
205 | ReturnReg = EfiCallEsalService (&Guid, IsEfiRuntime, 0, 0, 0, 0, 0, 0, 0);\r |
206 | \r |
207 | return (BOOLEAN) (ReturnReg.r9 == 1);\r |
208 | }\r |
209 | \r |
210 | BOOLEAN\r |
e8a3bee0 |
211 | EFIAPI\r |
878ddf1f |
212 | EfiGoneVirtual (\r |
213 | VOID\r |
214 | )\r |
215 | /*++\r |
216 | \r |
217 | Routine Description:\r |
218 | Return TRUE if SetVirtualAddressMap () has been called\r |
219 | \r |
220 | Arguments:\r |
221 | NONE\r |
222 | \r |
223 | Returns: \r |
224 | TRUE - If SetVirtualAddressMap () has been called\r |
225 | \r |
226 | --*/\r |
227 | {\r |
e8d4831b |
228 | EFI_GUID Guid;\r |
878ddf1f |
229 | SAL_RETURN_REGS ReturnReg;\r |
230 | \r |
e8d4831b |
231 | *((UINT64 *) &Guid) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_LO;\r |
232 | *(((UINT64 *)&Guid) + 1) = EFI_EXTENDED_SAL_VIRTUAL_SERVICES_PROTOCOL_GUID_HI;\r |
233 | \r |
878ddf1f |
234 | ReturnReg = EfiCallEsalService (&Guid, IsVirtual, 0, 0, 0, 0, 0, 0, 0);\r |
235 | \r |
236 | return (BOOLEAN) (ReturnReg.r9 == 1);\r |
237 | }\r |
e8a3bee0 |
238 | \r |