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fb0b259e | 1 | /** @file\r |
48557c65 | 2 | This file implements Runtime Architectural Protocol as defined in the\r |
3 | Platform Initialization specification 1.0 VOLUME 2 DXE Core Interface.\r | |
f2abdc91 | 4 | \r |
f2abdc91 | 5 | This code is used to produce the EFI runtime virtual switch over\r |
6 | \r | |
7 | THIS IS VERY DANGEROUS CODE BE VERY CAREFUL IF YOU CHANGE IT\r | |
8 | \r | |
9 | The transition for calling EFI Runtime functions in physical mode to calling\r | |
10 | them in virtual mode is very very complex. Every pointer in needs to be\r | |
11 | converted from physical mode to virtual mode. Be very careful walking linked\r | |
12 | lists! Then to make it really hard the code it's self needs be relocated into\r | |
13 | the new virtual address space.\r | |
14 | \r | |
15 | So here is the concept. The code in this module will never ever be called in\r | |
16 | virtual mode. This is the code that collects the information needed to convert\r | |
17 | to virtual mode (DXE core registers runtime stuff with this code). Since this\r | |
48557c65 | 18 | code is used to fix up all runtime images, it CAN NOT fix it's self up. So some\r |
f2abdc91 | 19 | code has to stay behind and that is us.\r |
20 | \r | |
21 | Also you need to be careful about when you allocate memory, as once we are in\r | |
22 | runtime (including our EVT_SIGNAL_EXIT_BOOT_SERVICES event) you can no longer\r | |
23 | allocate memory.\r | |
24 | \r | |
25 | Any runtime driver that gets loaded before us will not be callable in virtual\r | |
26 | mode. This is due to the fact that the DXE core can not register the info\r | |
27 | needed with us. This is good, since it keeps the code in this file from\r | |
28 | getting registered.\r | |
29 | \r | |
30 | \r | |
31 | Revision History:\r | |
32 | \r | |
33 | - Move the CalculateCrc32 function from Runtime Arch Protocol to Boot Service.\r | |
34 | Runtime Arch Protocol definition no longer contains CalculateCrc32. Boot Service\r | |
35 | Table now contains an item named CalculateCrc32.\r | |
36 | \r | |
9fc78752 | 37 | \r |
bd1957b4 | 38 | Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r |
9d510e61 | 39 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
9fc78752 | 40 | \r |
fb0b259e | 41 | **/\r |
f2abdc91 | 42 | \r |
43 | #include "Runtime.h"\r | |
44 | \r | |
45 | //\r | |
46 | // Global Variables\r | |
47 | //\r | |
1436aea4 MK |
48 | EFI_MEMORY_DESCRIPTOR *mVirtualMap = NULL;\r |
49 | UINTN mVirtualMapDescriptorSize;\r | |
50 | UINTN mVirtualMapMaxIndex;\r | |
51 | VOID *mMyImageBase;\r | |
f2abdc91 | 52 | \r |
53 | //\r | |
54 | // The handle onto which the Runtime Architectural Protocol instance is installed\r | |
55 | //\r | |
1436aea4 | 56 | EFI_HANDLE mRuntimeHandle = NULL;\r |
f2abdc91 | 57 | \r |
58 | //\r | |
59 | // The Runtime Architectural Protocol instance produced by this driver\r | |
60 | //\r | |
1436aea4 | 61 | EFI_RUNTIME_ARCH_PROTOCOL mRuntime = {\r |
f2abdc91 | 62 | INITIALIZE_LIST_HEAD_VARIABLE (mRuntime.ImageHead),\r |
63 | INITIALIZE_LIST_HEAD_VARIABLE (mRuntime.EventHead),\r | |
64 | \r | |
65 | //\r | |
66 | // Make sure Size != sizeof (EFI_MEMORY_DESCRIPTOR). This will\r | |
67 | // prevent people from having pointer math bugs in their code.\r | |
68 | // now you have to use *DescriptorSize to make things work.\r | |
69 | //\r | |
70 | sizeof (EFI_MEMORY_DESCRIPTOR) + sizeof (UINT64) - (sizeof (EFI_MEMORY_DESCRIPTOR) % sizeof (UINT64)),\r | |
71 | EFI_MEMORY_DESCRIPTOR_VERSION,\r | |
72 | 0,\r | |
73 | NULL,\r | |
74 | NULL,\r | |
75 | FALSE,\r | |
76 | FALSE\r | |
77 | };\r | |
78 | \r | |
79 | //\r | |
80 | // Worker Functions\r | |
81 | //\r | |
1436aea4 | 82 | \r |
9fc78752 | 83 | /**\r |
f2abdc91 | 84 | \r |
48557c65 | 85 | Calculate the 32-bit CRC in a EFI table using the Runtime Drivers\r |
f2abdc91 | 86 | internal function. The EFI Boot Services Table can not be used because\r |
9fc78752 | 87 | the EFI Boot Services Table was destroyed at ExitBootServices().\r |
88 | This is a internal function.\r | |
f2abdc91 | 89 | \r |
f2abdc91 | 90 | \r |
9fc78752 | 91 | @param Hdr Pointer to an EFI standard header\r |
f2abdc91 | 92 | \r |
9fc78752 | 93 | **/\r |
94 | VOID\r | |
95 | RuntimeDriverCalculateEfiHdrCrc (\r | |
96 | IN OUT EFI_TABLE_HEADER *Hdr\r | |
97 | )\r | |
f2abdc91 | 98 | {\r |
99 | UINT32 Crc;\r | |
100 | \r | |
1436aea4 | 101 | Hdr->CRC32 = 0;\r |
f2abdc91 | 102 | \r |
1436aea4 MK |
103 | Crc = 0;\r |
104 | RuntimeDriverCalculateCrc32 ((UINT8 *)Hdr, Hdr->HeaderSize, &Crc);\r | |
f2abdc91 | 105 | Hdr->CRC32 = Crc;\r |
106 | }\r | |
107 | \r | |
9fc78752 | 108 | /**\r |
f2abdc91 | 109 | \r |
110 | Determines the new virtual address that is to be used on subsequent memory accesses.\r | |
111 | \r | |
f2abdc91 | 112 | \r |
9fc78752 | 113 | @param DebugDisposition Supplies type information for the pointer being converted.\r |
114 | @param ConvertAddress A pointer to a pointer that is to be fixed to be the value needed\r | |
115 | for the new virtual address mappings being applied.\r | |
f2abdc91 | 116 | \r |
9fc78752 | 117 | @retval EFI_SUCCESS The pointer pointed to by Address was modified.\r |
118 | @retval EFI_NOT_FOUND The pointer pointed to by Address was not found to be part\r | |
119 | of the current memory map. This is normally fatal.\r | |
120 | @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r | |
f2abdc91 | 121 | \r |
9fc78752 | 122 | **/\r |
123 | EFI_STATUS\r | |
124 | EFIAPI\r | |
125 | RuntimeDriverConvertPointer (\r | |
126 | IN UINTN DebugDisposition,\r | |
127 | IN OUT VOID **ConvertAddress\r | |
128 | )\r | |
f2abdc91 | 129 | {\r |
1436aea4 MK |
130 | UINTN Address;\r |
131 | UINT64 VirtEndOfRange;\r | |
132 | EFI_MEMORY_DESCRIPTOR *VirtEntry;\r | |
133 | UINTN Index;\r | |
f2abdc91 | 134 | \r |
135 | //\r | |
136 | // Make sure ConvertAddress is a valid pointer\r | |
137 | //\r | |
138 | if (ConvertAddress == NULL) {\r | |
139 | return EFI_INVALID_PARAMETER;\r | |
140 | }\r | |
1436aea4 | 141 | \r |
f2abdc91 | 142 | //\r |
143 | // Get the address to convert\r | |
144 | //\r | |
1436aea4 | 145 | Address = (UINTN)*ConvertAddress;\r |
f2abdc91 | 146 | \r |
147 | //\r | |
148 | // If this is a null pointer, return if it's allowed\r | |
149 | //\r | |
150 | if (Address == 0) {\r | |
57dba20b | 151 | if ((DebugDisposition & EFI_OPTIONAL_PTR) != 0) {\r |
f2abdc91 | 152 | return EFI_SUCCESS;\r |
153 | }\r | |
154 | \r | |
155 | return EFI_INVALID_PARAMETER;\r | |
156 | }\r | |
157 | \r | |
48557c65 | 158 | VirtEntry = mVirtualMap;\r |
f2abdc91 | 159 | for (Index = 0; Index < mVirtualMapMaxIndex; Index++) {\r |
160 | //\r | |
48557c65 | 161 | // To prevent the inclusion of 64-bit math functions a UINTN was placed in\r |
f2abdc91 | 162 | // front of VirtEntry->NumberOfPages to cast it to a 32-bit thing on IA-32\r |
163 | // platforms. If you get this ASSERT remove the UINTN and do a 64-bit\r | |
164 | // multiply.\r | |
165 | //\r | |
1436aea4 | 166 | ASSERT (((UINTN)VirtEntry->NumberOfPages < 0xffffffff) || (sizeof (UINTN) > 4));\r |
f2abdc91 | 167 | \r |
168 | if ((VirtEntry->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r | |
169 | if (Address >= VirtEntry->PhysicalStart) {\r | |
1436aea4 | 170 | VirtEndOfRange = VirtEntry->PhysicalStart + (((UINTN)VirtEntry->NumberOfPages) * EFI_PAGE_SIZE);\r |
f2abdc91 | 171 | if (Address < VirtEndOfRange) {\r |
172 | //\r | |
173 | // Compute new address\r | |
174 | //\r | |
1436aea4 | 175 | *ConvertAddress = (VOID *)(Address - (UINTN)VirtEntry->PhysicalStart + (UINTN)VirtEntry->VirtualStart);\r |
f2abdc91 | 176 | return EFI_SUCCESS;\r |
177 | }\r | |
178 | }\r | |
179 | }\r | |
180 | \r | |
43025b29 | 181 | VirtEntry = NEXT_MEMORY_DESCRIPTOR (VirtEntry, mVirtualMapDescriptorSize);\r |
f2abdc91 | 182 | }\r |
183 | \r | |
184 | return EFI_NOT_FOUND;\r | |
185 | }\r | |
186 | \r | |
9fc78752 | 187 | /**\r |
f2abdc91 | 188 | \r |
189 | Determines the new virtual address that is to be used on subsequent memory accesses\r | |
190 | for internal pointers.\r | |
9fc78752 | 191 | This is a internal function.\r |
f2abdc91 | 192 | \r |
f2abdc91 | 193 | \r |
9fc78752 | 194 | @param ConvertAddress A pointer to a pointer that is to be fixed to be the value needed\r |
195 | for the new virtual address mappings being applied.\r | |
f2abdc91 | 196 | \r |
9fc78752 | 197 | @retval EFI_SUCCESS The pointer pointed to by Address was modified.\r |
198 | @retval EFI_NOT_FOUND The pointer pointed to by Address was not found to be part\r | |
199 | of the current memory map. This is normally fatal.\r | |
200 | @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r | |
f2abdc91 | 201 | \r |
9fc78752 | 202 | **/\r |
203 | EFI_STATUS\r | |
204 | RuntimeDriverConvertInternalPointer (\r | |
1436aea4 | 205 | IN OUT VOID **ConvertAddress\r |
9fc78752 | 206 | )\r |
f2abdc91 | 207 | {\r |
208 | return RuntimeDriverConvertPointer (0x0, ConvertAddress);\r | |
209 | }\r | |
210 | \r | |
9fc78752 | 211 | /**\r |
212 | \r | |
213 | Changes the runtime addressing mode of EFI firmware from physical to virtual.\r | |
214 | \r | |
215 | \r | |
216 | @param MemoryMapSize The size in bytes of VirtualMap.\r | |
217 | @param DescriptorSize The size in bytes of an entry in the VirtualMap.\r | |
218 | @param DescriptorVersion The version of the structure entries in VirtualMap.\r | |
219 | @param VirtualMap An array of memory descriptors which contain new virtual\r | |
220 | address mapping information for all runtime ranges.\r | |
221 | \r | |
222 | @retval EFI_SUCCESS The virtual address map has been applied.\r | |
223 | @retval EFI_UNSUPPORTED EFI firmware is not at runtime, or the EFI firmware is already in\r | |
224 | virtual address mapped mode.\r | |
225 | @retval EFI_INVALID_PARAMETER DescriptorSize or DescriptorVersion is invalid.\r | |
226 | @retval EFI_NO_MAPPING A virtual address was not supplied for a range in the memory\r | |
227 | map that requires a mapping.\r | |
228 | @retval EFI_NOT_FOUND A virtual address was supplied for an address that is not found\r | |
229 | in the memory map.\r | |
230 | \r | |
231 | **/\r | |
f2abdc91 | 232 | EFI_STATUS\r |
233 | EFIAPI\r | |
234 | RuntimeDriverSetVirtualAddressMap (\r | |
235 | IN UINTN MemoryMapSize,\r | |
236 | IN UINTN DescriptorSize,\r | |
237 | IN UINT32 DescriptorVersion,\r | |
238 | IN EFI_MEMORY_DESCRIPTOR *VirtualMap\r | |
239 | )\r | |
f2abdc91 | 240 | {\r |
1436aea4 MK |
241 | EFI_STATUS Status;\r |
242 | EFI_RUNTIME_EVENT_ENTRY *RuntimeEvent;\r | |
243 | EFI_RUNTIME_IMAGE_ENTRY *RuntimeImage;\r | |
244 | LIST_ENTRY *Link;\r | |
245 | EFI_PHYSICAL_ADDRESS VirtImageBase;\r | |
f2abdc91 | 246 | \r |
247 | //\r | |
248 | // Can only switch to virtual addresses once the memory map is locked down,\r | |
249 | // and can only set it once\r | |
250 | //\r | |
251 | if (!mRuntime.AtRuntime || mRuntime.VirtualMode) {\r | |
252 | return EFI_UNSUPPORTED;\r | |
253 | }\r | |
1436aea4 | 254 | \r |
f2abdc91 | 255 | //\r |
256 | // Only understand the original descriptor format\r | |
257 | //\r | |
1436aea4 | 258 | if ((DescriptorVersion != EFI_MEMORY_DESCRIPTOR_VERSION) || (DescriptorSize < sizeof (EFI_MEMORY_DESCRIPTOR))) {\r |
f2abdc91 | 259 | return EFI_INVALID_PARAMETER;\r |
260 | }\r | |
1436aea4 | 261 | \r |
f2abdc91 | 262 | //\r |
263 | // We are now committed to go to virtual mode, so lets get to it!\r | |
264 | //\r | |
265 | mRuntime.VirtualMode = TRUE;\r | |
266 | \r | |
267 | //\r | |
268 | // ConvertPointer() needs this mVirtualMap to do the conversion. So set up\r | |
269 | // globals we need to parse the virtual address map.\r | |
270 | //\r | |
271 | mVirtualMapDescriptorSize = DescriptorSize;\r | |
272 | mVirtualMapMaxIndex = MemoryMapSize / DescriptorSize;\r | |
273 | mVirtualMap = VirtualMap;\r | |
274 | \r | |
275 | //\r | |
9d3dae39 | 276 | // ReporstStatusCodeLib will check and make sure this service can be called in runtime mode.\r |
f2abdc91 | 277 | //\r |
f9876ecf | 278 | REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_EFI_RUNTIME_SERVICE | EFI_SW_RS_PC_SET_VIRTUAL_ADDRESS_MAP));\r |
f2abdc91 | 279 | \r |
b0121d76 EL |
280 | //\r |
281 | // Report Status Code here since EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event will be signalled.\r | |
282 | //\r | |
283 | REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_VIRTUAL_ADDRESS_CHANGE_EVENT));\r | |
284 | \r | |
f2abdc91 | 285 | //\r |
286 | // Signal all the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE events.\r | |
287 | // All runtime events are stored in a list in Runtime AP.\r | |
288 | //\r | |
289 | for (Link = mRuntime.EventHead.ForwardLink; Link != &mRuntime.EventHead; Link = Link->ForwardLink) {\r | |
50d7ebad | 290 | RuntimeEvent = BASE_CR (Link, EFI_RUNTIME_EVENT_ENTRY, Link);\r |
f2abdc91 | 291 | if ((RuntimeEvent->Type & EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE) == EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE) {\r |
d342d318 LE |
292 | //\r |
293 | // Work around the bug in the Platform Init specification (v1.7),\r | |
294 | // reported as Mantis#2017: "EFI_RUNTIME_EVENT_ENTRY.Event" should have\r | |
295 | // type EFI_EVENT, not (EFI_EVENT*). The PI spec documents the field\r | |
296 | // correctly as "The EFI_EVENT returned by CreateEvent()", but the type\r | |
297 | // of the field doesn't match the natural language description. Therefore\r | |
298 | // we need an explicit cast here.\r | |
299 | //\r | |
f2abdc91 | 300 | RuntimeEvent->NotifyFunction (\r |
1436aea4 | 301 | (EFI_EVENT)RuntimeEvent->Event,\r |
f2abdc91 | 302 | RuntimeEvent->NotifyContext\r |
303 | );\r | |
304 | }\r | |
305 | }\r | |
306 | \r | |
307 | //\r | |
308 | // Relocate runtime images. All runtime images are stored in a list in Runtime AP.\r | |
309 | //\r | |
310 | for (Link = mRuntime.ImageHead.ForwardLink; Link != &mRuntime.ImageHead; Link = Link->ForwardLink) {\r | |
50d7ebad | 311 | RuntimeImage = BASE_CR (Link, EFI_RUNTIME_IMAGE_ENTRY, Link);\r |
f2abdc91 | 312 | //\r |
313 | // We don't want to relocate our selves, as we only run in physical mode.\r | |
314 | //\r | |
315 | if (mMyImageBase != RuntimeImage->ImageBase) {\r | |
1436aea4 MK |
316 | VirtImageBase = (EFI_PHYSICAL_ADDRESS)(UINTN)RuntimeImage->ImageBase;\r |
317 | Status = RuntimeDriverConvertPointer (0, (VOID **)&VirtImageBase);\r | |
f2abdc91 | 318 | ASSERT_EFI_ERROR (Status);\r |
319 | \r | |
320 | PeCoffLoaderRelocateImageForRuntime (\r | |
1436aea4 | 321 | (EFI_PHYSICAL_ADDRESS)(UINTN)RuntimeImage->ImageBase,\r |
f2abdc91 | 322 | VirtImageBase,\r |
1436aea4 | 323 | (UINTN)RuntimeImage->ImageSize,\r |
f2abdc91 | 324 | RuntimeImage->RelocationData\r |
325 | );\r | |
326 | \r | |
1436aea4 | 327 | InvalidateInstructionCacheRange (RuntimeImage->ImageBase, (UINTN)RuntimeImage->ImageSize);\r |
f2abdc91 | 328 | }\r |
329 | }\r | |
330 | \r | |
331 | //\r | |
332 | // Convert all the Runtime Services except ConvertPointer() and SetVirtualAddressMap()\r | |
333 | // and recompute the CRC-32\r | |
334 | //\r | |
1436aea4 MK |
335 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->GetTime);\r |
336 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->SetTime);\r | |
337 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->GetWakeupTime);\r | |
338 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->SetWakeupTime);\r | |
339 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->ResetSystem);\r | |
340 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->GetNextHighMonotonicCount);\r | |
341 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->GetVariable);\r | |
342 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->SetVariable);\r | |
343 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->GetNextVariableName);\r | |
344 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->QueryVariableInfo);\r | |
345 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->UpdateCapsule);\r | |
346 | RuntimeDriverConvertInternalPointer ((VOID **)&gRT->QueryCapsuleCapabilities);\r | |
f2abdc91 | 347 | RuntimeDriverCalculateEfiHdrCrc (&gRT->Hdr);\r |
348 | \r | |
349 | //\r | |
b010fb77 | 350 | // UEFI don't require System Configuration Tables Conversion.\r |
fb0b259e | 351 | //\r |
f2abdc91 | 352 | \r |
353 | //\r | |
354 | // Convert the runtime fields of the EFI System Table and recompute the CRC-32\r | |
355 | //\r | |
1436aea4 MK |
356 | RuntimeDriverConvertInternalPointer ((VOID **)&gST->FirmwareVendor);\r |
357 | RuntimeDriverConvertInternalPointer ((VOID **)&gST->ConfigurationTable);\r | |
358 | RuntimeDriverConvertInternalPointer ((VOID **)&gST->RuntimeServices);\r | |
f2abdc91 | 359 | RuntimeDriverCalculateEfiHdrCrc (&gST->Hdr);\r |
360 | \r | |
361 | //\r | |
362 | // At this point, gRT and gST are physical pointers, but the contents of these tables\r | |
363 | // have been converted to runtime.\r | |
364 | //\r | |
365 | //\r | |
366 | // mVirtualMap is only valid during SetVirtualAddressMap() call\r | |
367 | //\r | |
f78b937c GH |
368 | mVirtualMap = NULL;\r |
369 | mVirtualMapMaxIndex = 0;\r | |
f2abdc91 | 370 | \r |
371 | return EFI_SUCCESS;\r | |
372 | }\r | |
373 | \r | |
9fc78752 | 374 | /**\r |
48557c65 | 375 | Entry Point for Runtime driver.\r |
f2abdc91 | 376 | \r |
48557c65 | 377 | This function installs Runtime Architectural Protocol and registers CalculateCrc32 boot services table,\r |
378 | SetVirtualAddressMap & ConvertPointer runtime services table.\r | |
f2abdc91 | 379 | \r |
9fc78752 | 380 | @param ImageHandle Image handle of this driver.\r |
48557c65 | 381 | @param SystemTable a Pointer to the EFI System Table.\r |
f2abdc91 | 382 | \r |
48557c65 | 383 | @retval EFI_SUCEESS Runtime Driver Architectural Protocol is successfully installed\r |
384 | @return Others Some error occurs when installing Runtime Driver Architectural Protocol.\r | |
f2abdc91 | 385 | \r |
9fc78752 | 386 | **/\r |
387 | EFI_STATUS\r | |
388 | EFIAPI\r | |
389 | RuntimeDriverInitialize (\r | |
1436aea4 MK |
390 | IN EFI_HANDLE ImageHandle,\r |
391 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
9fc78752 | 392 | )\r |
f2abdc91 | 393 | {\r |
1436aea4 MK |
394 | EFI_STATUS Status;\r |
395 | EFI_LOADED_IMAGE_PROTOCOL *MyLoadedImage;\r | |
f2abdc91 | 396 | \r |
397 | //\r | |
48557c65 | 398 | // This image needs to be excluded from relocation for virtual mode, so cache\r |
f2abdc91 | 399 | // a copy of the Loaded Image protocol to test later.\r |
400 | //\r | |
401 | Status = gBS->HandleProtocol (\r | |
402 | ImageHandle,\r | |
403 | &gEfiLoadedImageProtocolGuid,\r | |
1436aea4 | 404 | (VOID **)&MyLoadedImage\r |
f2abdc91 | 405 | );\r |
406 | ASSERT_EFI_ERROR (Status);\r | |
407 | mMyImageBase = MyLoadedImage->ImageBase;\r | |
408 | \r | |
f2abdc91 | 409 | //\r |
410 | // Fill in the entries of the EFI Boot Services and EFI Runtime Services Tables\r | |
411 | //\r | |
412 | gBS->CalculateCrc32 = RuntimeDriverCalculateCrc32;\r | |
413 | gRT->SetVirtualAddressMap = RuntimeDriverSetVirtualAddressMap;\r | |
414 | gRT->ConvertPointer = RuntimeDriverConvertPointer;\r | |
415 | \r | |
416 | //\r | |
417 | // Install the Runtime Architectural Protocol onto a new handle\r | |
418 | //\r | |
419 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
420 | &mRuntimeHandle,\r | |
421 | &gEfiRuntimeArchProtocolGuid,\r | |
422 | &mRuntime,\r | |
423 | NULL\r | |
424 | );\r | |
425 | ASSERT_EFI_ERROR (Status);\r | |
426 | \r | |
48557c65 | 427 | return Status;\r |
f2abdc91 | 428 | }\r |