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42eedea9 | 1 | /** @file\r |
60c93673 | 2 | UEFI Runtime Library implementation for non IPF processor types.\r |
ebcc8fb7 | 3 | \r |
60c93673 | 4 | Copyright (c) 2006 - 2008 Intel Corporation. <BR>\r |
ebcc8fb7 | 5 | All rights reserved. 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 | |
6c401377 | 15 | #include "RuntimeLibInternal.h"\r |
ebcc8fb7 | 16 | \r |
17 | ///\r | |
18 | /// Driver Lib Module Globals\r | |
19 | ///\r | |
20 | \r | |
fe467413 | 21 | EFI_EVENT mEfiVirtualNotifyEvent;\r |
22 | EFI_EVENT mEfiExitBootServicesEvent;\r | |
23 | BOOLEAN mEfiGoneVirtual = FALSE;\r | |
24 | BOOLEAN mEfiAtRuntime = FALSE;\r | |
51969ecb | 25 | EFI_RUNTIME_SERVICES *gInternalRT;\r |
ebcc8fb7 | 26 | \r |
27 | /**\r | |
42eedea9 | 28 | Set AtRuntime flag as TRUE after ExitBootServices.\r |
ebcc8fb7 | 29 | \r |
30 | @param[in] Event The Event that is being processed\r | |
31 | @param[in] Context Event Context\r | |
32 | **/\r | |
33 | VOID\r | |
34 | EFIAPI\r | |
21998b67 | 35 | RuntimeLibExitBootServicesEvent (\r |
ebcc8fb7 | 36 | IN EFI_EVENT Event,\r |
37 | IN VOID *Context\r | |
38 | )\r | |
39 | {\r | |
40 | //\r | |
41 | // Clear out BootService globals\r | |
42 | //\r | |
43 | gBS = NULL;\r | |
44 | \r | |
45 | mEfiAtRuntime = TRUE;\r | |
46 | }\r | |
47 | \r | |
48 | /**\r | |
49 | Fixup internal data so that EFI can be call in virtual mode.\r | |
50 | Call the passed in Child Notify event and convert any pointers in\r | |
51 | lib to virtual mode.\r | |
52 | \r | |
53 | @param[in] Event The Event that is being processed\r | |
54 | @param[in] Context Event Context\r | |
55 | **/\r | |
ebcc8fb7 | 56 | VOID\r |
57 | EFIAPI\r | |
58 | RuntimeLibVirtualNotifyEvent (\r | |
59 | IN EFI_EVENT Event,\r | |
60 | IN VOID *Context\r | |
61 | )\r | |
62 | {\r | |
ebcc8fb7 | 63 | //\r |
64 | // Update global for Runtime Services Table and IO\r | |
65 | //\r | |
51969ecb | 66 | EfiConvertPointer (0, (VOID **) &gInternalRT);\r |
ebcc8fb7 | 67 | \r |
68 | mEfiGoneVirtual = TRUE;\r | |
69 | }\r | |
70 | \r | |
71 | /**\r | |
a9b896f4 | 72 | Initialize runtime Driver Lib if it has not yet been initialized.\r |
60c93673 LG |
73 | It will ASSERT() if gRT is NULL or gBS is NULL.\r |
74 | It will ASSERT() if that operation fails.\r | |
ebcc8fb7 | 75 | \r |
76 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
77 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
78 | \r | |
79 | @return EFI_STATUS always returns EFI_SUCCESS except EFI_ALREADY_STARTED if already started.\r | |
80 | **/\r | |
81 | EFI_STATUS\r | |
82 | EFIAPI\r | |
83 | RuntimeDriverLibConstruct (\r | |
84 | IN EFI_HANDLE ImageHandle,\r | |
85 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
86 | )\r | |
87 | {\r | |
88 | EFI_STATUS Status;\r | |
89 | \r | |
60c93673 LG |
90 | ASSERT (gRT != NULL);\r |
91 | ASSERT (gBS != NULL);\r | |
92 | \r | |
51969ecb | 93 | gInternalRT = gRT;\r |
ebcc8fb7 | 94 | //\r |
95 | // Register SetVirtualAddressMap () notify function\r | |
96 | //\r | |
57a31578 | 97 | Status = gBS->CreateEventEx (\r |
98 | EVT_NOTIFY_SIGNAL,\r | |
ebcc8fb7 | 99 | TPL_NOTIFY,\r |
100 | RuntimeLibVirtualNotifyEvent,\r | |
101 | NULL,\r | |
57a31578 | 102 | &gEfiEventVirtualAddressChangeGuid,\r |
ebcc8fb7 | 103 | &mEfiVirtualNotifyEvent\r |
104 | );\r | |
105 | \r | |
106 | ASSERT_EFI_ERROR (Status);\r | |
107 | \r | |
57a31578 | 108 | Status = gBS->CreateEventEx (\r |
109 | EVT_NOTIFY_SIGNAL,\r | |
21998b67 | 110 | TPL_NOTIFY,\r |
111 | RuntimeLibExitBootServicesEvent,\r | |
112 | NULL,\r | |
57a31578 | 113 | &gEfiEventExitBootServicesGuid,\r |
21998b67 | 114 | &mEfiExitBootServicesEvent\r |
115 | );\r | |
116 | \r | |
117 | ASSERT_EFI_ERROR (Status);\r | |
118 | \r | |
ebcc8fb7 | 119 | return Status;\r |
120 | }\r | |
121 | \r | |
122 | /**\r | |
60c93673 LG |
123 | If a runtime driver exits with an error, it must call this routine \r |
124 | to free the allocated resource before the exiting.\r | |
125 | It will ASSERT() if gBS is NULL.\r | |
126 | It will ASSERT() if that operation fails.\r | |
ebcc8fb7 | 127 | \r |
42eedea9 | 128 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r |
129 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
130 | \r | |
ebcc8fb7 | 131 | @retval EFI_SUCCESS Shutdown the Runtime Driver Lib successfully\r |
132 | @retval EFI_UNSUPPORTED Runtime Driver lib was not initialized at all\r | |
133 | **/\r | |
134 | EFI_STATUS\r | |
135 | EFIAPI\r | |
136 | RuntimeDriverLibDeconstruct (\r | |
137 | IN EFI_HANDLE ImageHandle,\r | |
138 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
139 | )\r | |
140 | {\r | |
141 | EFI_STATUS Status;\r | |
142 | \r | |
143 | //\r | |
144 | // Close SetVirtualAddressMap () notify function\r | |
145 | //\r | |
146 | ASSERT (gBS != NULL);\r | |
147 | Status = gBS->CloseEvent (mEfiVirtualNotifyEvent);\r | |
148 | ASSERT_EFI_ERROR (Status);\r | |
149 | \r | |
21998b67 | 150 | Status = gBS->CloseEvent (mEfiExitBootServicesEvent);\r |
151 | ASSERT_EFI_ERROR (Status);\r | |
152 | \r | |
ebcc8fb7 | 153 | return Status;\r |
154 | }\r | |
155 | \r | |
156 | /**\r | |
1d37ab9f | 157 | This function allows the caller to determine if UEFI ExitBootServices() has been called.\r |
158 | \r | |
159 | This function returns TRUE after all the EVT_SIGNAL_EXIT_BOOT_SERVICES functions have\r | |
160 | executed as a result of the OS calling ExitBootServices(). Prior to this time FALSE\r | |
161 | is returned. This function is used by runtime code to decide it is legal to access\r | |
162 | services that go away after ExitBootServices().\r | |
163 | \r | |
164 | @retval TRUE The system has finished executing the EVT_SIGNAL_EXIT_BOOT_SERVICES event.\r | |
165 | @retval FALSE The system has not finished executing the EVT_SIGNAL_EXIT_BOOT_SERVICES event.\r | |
ebcc8fb7 | 166 | \r |
ebcc8fb7 | 167 | **/\r |
168 | BOOLEAN\r | |
169 | EFIAPI\r | |
170 | EfiAtRuntime (\r | |
171 | VOID\r | |
172 | )\r | |
173 | {\r | |
174 | return mEfiAtRuntime;\r | |
175 | }\r | |
176 | \r | |
177 | /**\r | |
1d37ab9f | 178 | This function allows the caller to determine if UEFI SetVirtualAddressMap() has been called. \r |
179 | \r | |
180 | This function returns TRUE after all the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE functions have\r | |
181 | executed as a result of the OS calling SetVirtualAddressMap(). Prior to this time FALSE\r | |
182 | is returned. This function is used by runtime code to decide it is legal to access services\r | |
183 | that go away after SetVirtualAddressMap().\r | |
184 | \r | |
185 | @retval TRUE The system has finished executing the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
186 | @retval FALSE The system has not finished executing the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
ebcc8fb7 | 187 | \r |
ebcc8fb7 | 188 | **/\r |
189 | BOOLEAN\r | |
190 | EFIAPI\r | |
191 | EfiGoneVirtual (\r | |
192 | VOID\r | |
193 | )\r | |
194 | {\r | |
195 | return mEfiGoneVirtual;\r | |
196 | }\r | |
197 | \r |