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878ddf1f 1/*++\r
2\r
3Copyright (c) 2006, Intel Corporation \r
4All rights reserved. This program and the accompanying materials \r
5are licensed and made available under the terms and conditions of the BSD License \r
6which accompanies this distribution. The full text of the license may be found at \r
7http://opensource.org/licenses/bsd-license.php \r
8 \r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
11\r
12Module Name:\r
13\r
14 Runtime.c\r
15\r
16Abstract:\r
17\r
18 Runtime Architectural Protocol as defined in the DXE CIS\r
19\r
20 This code is used to produce the EFI runtime virtual switch over\r
21\r
22 THIS IS VERY DANGEROUS CODE BE VERY CAREFUL IF YOU CHANGE IT\r
23\r
24 The transition for calling EFI Runtime functions in physical mode to calling\r
25 them in virtual mode is very very complex. Every pointer in needs to be \r
26 converted from physical mode to virtual mode. Be very careful walking linked\r
27 lists! Then to make it really hard the code it's self needs be relocated into\r
28 the new virtual address space.\r
29\r
30 So here is the concept. The code in this module will never ever be called in\r
31 virtual mode. This is the code that collects the information needed to convert\r
32 to virtual mode (DXE core registers runtime stuff with this code). Since this \r
33 code is used to fixup all runtime images, it CAN NOT fix it's self up. So some\r
34 code has to stay behind and that is us.\r
35\r
36 Also you need to be careful about when you allocate memory, as once we are in \r
37 runtime (including our EVT_SIGNAL_EXIT_BOOT_SERVICES event) you can no longer \r
38 allocate memory.\r
39\r
40 Any runtime driver that gets loaded before us will not be callable in virtual \r
41 mode. This is due to the fact that the DXE core can not register the info \r
42 needed with us. This is good, since it keeps the code in this file from \r
43 getting registered.\r
44\r
45\r
46Revision History:\r
47\r
48 - Move the CalculateCrc32 function from Runtime Arch Protocol to Boot Service.\r
49 Runtime Arch Protocol definition no longer contains CalculateCrc32. Boot Service\r
50 Table now contains an item named CalculateCrc32.\r
51\r
52--*/\r
53\r
54\r
55#include "Runtime.h"\r
56\r
57//\r
58// This is a only short term solution.\r
59// There is a change coming to the Runtime AP that\r
60// will make it so the Runtime driver will not have to allocate any buffers. \r
61//\r
62#define MAX_RUNTIME_IMAGE_NUM (64)\r
63#define MAX_RUNTIME_EVENT_NUM (64)\r
64RUNTIME_IMAGE_RELOCATION_DATA mRuntimeImageBuffer[MAX_RUNTIME_IMAGE_NUM];\r
65RUNTIME_NOTIFY_EVENT_DATA mRuntimeEventBuffer[MAX_RUNTIME_EVENT_NUM];\r
66UINTN mRuntimeImageNumber;\r
67UINTN mRuntimeEventNumber;\r
68\r
69//\r
70// The handle onto which the Runtime Architectural Protocol instance is installed\r
71//\r
72EFI_HANDLE mRuntimeHandle = NULL;\r
73\r
74//\r
75// The Runtime Architectural Protocol instance produced by this driver\r
76//\r
77EFI_RUNTIME_ARCH_PROTOCOL mRuntime = {\r
78 RuntimeDriverRegisterImage,\r
79 RuntimeDriverRegisterEvent\r
80};\r
81\r
82//\r
83// Global Variables\r
84//\r
85LIST_ENTRY mRelocationList = INITIALIZE_LIST_HEAD_VARIABLE(mRelocationList);\r
86LIST_ENTRY mEventList = INITIALIZE_LIST_HEAD_VARIABLE(mEventList);\r
87BOOLEAN mEfiVirtualMode = FALSE;\r
88EFI_GUID mLocalEfiUgaIoProtocolGuid = EFI_UGA_IO_PROTOCOL_GUID;\r
89EFI_MEMORY_DESCRIPTOR *mVirtualMap = NULL;\r
90UINTN mVirtualMapDescriptorSize;\r
91UINTN mVirtualMapMaxIndex;\r
92\r
93EFI_LOADED_IMAGE_PROTOCOL *mMyLoadedImage;\r
94\r
95//\r
96// Worker Functions\r
97//\r
98VOID\r
99RuntimeDriverCalculateEfiHdrCrc (\r
100 IN OUT EFI_TABLE_HEADER *Hdr\r
101 )\r
102/*++\r
103\r
104Routine Description:\r
105\r
106 Calcualte the 32-bit CRC in a EFI table using the Runtime Drivers\r
107 internal function. The EFI Boot Services Table can not be used because\r
108 the EFI Boot Services Table was destroyed at ExitBootServices()\r
109\r
110Arguments:\r
111\r
112 Hdr - Pointer to an EFI standard header\r
113\r
114Returns:\r
115\r
116 None\r
117\r
118--*/\r
119{\r
120 UINT32 Crc;\r
121\r
122 Hdr->CRC32 = 0;\r
123\r
124 Crc = 0;\r
125 RuntimeDriverCalculateCrc32 ((UINT8 *) Hdr, Hdr->HeaderSize, &Crc);\r
126 Hdr->CRC32 = Crc;\r
127}\r
128\r
129EFI_STATUS\r
130EFIAPI\r
131RuntimeDriverRegisterImage (\r
132 IN EFI_RUNTIME_ARCH_PROTOCOL *This,\r
133 IN EFI_PHYSICAL_ADDRESS ImageBase,\r
134 IN UINTN ImageSize,\r
135 IN VOID *RelocationData\r
136 )\r
137/*++\r
138\r
139Routine Description:\r
140\r
141 When a SetVirtualAddressMap() is performed all the runtime images loaded by \r
142 DXE must be fixed up with the new virtual address map. To facilitate this the \r
143 Runtime Architectural Protocol needs to be informed of every runtime driver \r
144 that is registered. All the runtime images loaded by DXE should be registered \r
145 with this service by the DXE Core when ExitBootServices() is called. The \r
146 images that are registered with this service must have successfully been \r
147 loaded into memory with the Boot Service LoadImage(). As a result, no \r
148 parameter checking needs to be performed.\r
149\r
150Arguments:\r
151\r
152 This - The EFI_RUNTIME_ARCH_PROTOCOL instance. \r
153\r
154 ImageBase - Start of image that has been loaded in memory. It is either \r
155 a pointer to the DOS or PE header of the image.\r
156\r
157 ImageSize - Size of the image in bytes.\r
158\r
159 RelocationData - Information about the fixups that were performed on ImageBase \r
160 when it was loaded into memory. This information is needed \r
161 when the virtual mode fix-ups are reapplied so that data that \r
162 has been programmatically updated will not be fixed up. If \r
163 code updates a global variable the code is responsible for \r
164 fixing up the variable for virtual mode.\r
165\r
166Returns: \r
167\r
168 EFI_SUCCESS - The ImageBase has been registered.\r
169\r
170--*/\r
171{\r
172 RUNTIME_IMAGE_RELOCATION_DATA *RuntimeImage;\r
173\r
174 if (mMyLoadedImage->ImageBase == (VOID *) (UINTN) ImageBase) {\r
175 //\r
176 // We don't want to relocate our selves, as we only run in physical mode.\r
177 //\r
178 return EFI_SUCCESS;\r
179 }\r
180\r
181 RuntimeImage = &mRuntimeImageBuffer[mRuntimeImageNumber];\r
182 mRuntimeImageNumber++;\r
183 ASSERT (mRuntimeImageNumber < MAX_RUNTIME_IMAGE_NUM);\r
184\r
185 RuntimeImage->Valid = TRUE;\r
186 RuntimeImage->ImageBase = ImageBase;\r
187 RuntimeImage->ImageSize = ImageSize;\r
188 RuntimeImage->RelocationData = RelocationData;\r
189\r
190 InsertTailList (&mRelocationList, &RuntimeImage->Link);\r
191 return EFI_SUCCESS;\r
192}\r
193\r
194EFI_STATUS\r
195EFIAPI\r
196RuntimeDriverRegisterEvent (\r
197 IN EFI_RUNTIME_ARCH_PROTOCOL *This,\r
198 IN UINT32 Type,\r
199 IN EFI_TPL NotifyTpl,\r
200 IN EFI_EVENT_NOTIFY NotifyFunction,\r
201 IN VOID *NotifyContext,\r
202 IN EFI_EVENT *Event\r
203 )\r
204/*++\r
205\r
206Routine Description:\r
207\r
208 This function is used to support the required runtime events. Currently only \r
209 runtime events of type EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE needs to be \r
210 registered with this service. All the runtime events that exist in the DXE \r
211 Core should be registered with this service when ExitBootServices() is called. \r
212 All the events that are registered with this service must have been created \r
213 with the Boot Service CreateEvent(). As a result, no parameter checking needs \r
214 to be performed.\r
215\r
216Arguments:\r
217\r
218 This - The EFI_RUNTIME_ARCH_PROTOCOL instance. \r
219\r
220 Type - The same as Type passed into CreateEvent().\r
221\r
222 NotifyTpl - The same as NotifyTpl passed into CreateEvent().\r
223\r
224 NotifyFunction - The same as NotifyFunction passed into CreateEvent().\r
225\r
226 NotifyContext - The same as NotifyContext passed into CreateEvent().\r
227\r
228 Event - The EFI_EVENT returned by CreateEvent(). Event must be in \r
229 runtime memory.\r
230\r
231Returns: \r
232\r
233 EFI_SUCCESS - The Event has been registered.\r
234\r
235--*/\r
236{\r
237 RUNTIME_NOTIFY_EVENT_DATA *RuntimeEvent;\r
238\r
239 RuntimeEvent = &mRuntimeEventBuffer[mRuntimeEventNumber];\r
240 mRuntimeEventNumber++;\r
241 ASSERT (mRuntimeEventNumber < MAX_RUNTIME_EVENT_NUM);\r
242\r
243 RuntimeEvent->Type = Type;\r
244 RuntimeEvent->NotifyTpl = NotifyTpl;\r
245 RuntimeEvent->NotifyFunction = NotifyFunction;\r
246 RuntimeEvent->NotifyContext = NotifyContext;\r
247 RuntimeEvent->Event = Event;\r
248\r
249 InsertTailList (&mEventList, &RuntimeEvent->Link);\r
250 return EFI_SUCCESS;\r
251}\r
252\r
253EFI_STATUS\r
254EFIAPI\r
255RuntimeDriverConvertPointer (\r
256 IN UINTN DebugDisposition,\r
257 IN OUT VOID **ConvertAddress\r
258 )\r
259{\r
260 UINTN Address;\r
261 VOID *PlabelConvertAddress;\r
262 UINT64 VirtEndOfRange;\r
263 EFI_MEMORY_DESCRIPTOR *VirtEntry;\r
264 UINTN Index;\r
265\r
266 //\r
267 // Make sure ConvertAddress is a valid pointer\r
268 //\r
269 if (ConvertAddress == NULL) {\r
270 return EFI_INVALID_PARAMETER;\r
271 }\r
272 //\r
273 // Get the address to convert\r
274 //\r
275 Address = (UINTN) *ConvertAddress;\r
276\r
277 //\r
278 // If this is a null pointer, return if it's allowed\r
279 //\r
280 if (Address == 0) {\r
281 if (DebugDisposition & EFI_OPTIONAL_POINTER) {\r
282 return EFI_SUCCESS;\r
283 }\r
284\r
285 return EFI_INVALID_PARAMETER;\r
286 }\r
287\r
288 PlabelConvertAddress = NULL;\r
289 VirtEntry = mVirtualMap;\r
290 for (Index = 0; Index < mVirtualMapMaxIndex; Index++) {\r
291 //\r
292 // To prevent the inclusion of 64-bit math functions a UINTN was placed in\r
293 // front of VirtEntry->NumberOfPages to cast it to a 32-bit thing on IA-32\r
294 // platforms. If you get this ASSERT remove the UINTN and do a 64-bit\r
295 // multiply.\r
296 //\r
297 ASSERT ((VirtEntry->NumberOfPages < 0xffffffff) || (sizeof (UINTN) > 4));\r
298\r
299 if ((VirtEntry->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r
300 if (Address >= VirtEntry->PhysicalStart) {\r
301 VirtEndOfRange = VirtEntry->PhysicalStart + (((UINTN) VirtEntry->NumberOfPages) * EFI_PAGE_SIZE);\r
302 if (Address < VirtEndOfRange) {\r
303 //\r
304 // Compute new address\r
305 //\r
306 *ConvertAddress = (VOID *) (Address - (UINTN) VirtEntry->PhysicalStart + (UINTN) VirtEntry->VirtualStart);\r
307 return EFI_SUCCESS;\r
308 } else if (Address < (VirtEndOfRange + 0x200000)) {\r
309 //\r
310 // On Itanium GP defines a window +/- 2 MB inside an image.\r
311 // The compiler may asign a GP value outside of the image. Thus\r
312 // it could fall out side of any of our valid regions\r
313 //\r
314 PlabelConvertAddress = (VOID *) (Address - (UINTN) VirtEntry->PhysicalStart + (UINTN) VirtEntry->VirtualStart);\r
315 }\r
316 }\r
317 }\r
318\r
319 VirtEntry = NextMemoryDescriptor (VirtEntry, mVirtualMapDescriptorSize);\r
320 }\r
321\r
322 if (DebugDisposition & EFI_IPF_GP_POINTER) {\r
323 //\r
324 // If it's an IPF GP and the GP was outside the image handle that case.\r
325 //\r
326 if (PlabelConvertAddress != NULL) {\r
327 *ConvertAddress = PlabelConvertAddress;\r
328 return EFI_SUCCESS;\r
329 }\r
330 }\r
331\r
332 return EFI_NOT_FOUND;\r
333}\r
334\r
335EFI_STATUS\r
336RuntimeDriverConvertInternalPointer (\r
337 IN OUT VOID **ConvertAddress\r
338 )\r
339{\r
340 return RuntimeDriverConvertPointer (0x0, ConvertAddress);\r
341}\r
342\r
343EFI_STATUS\r
344EFIAPI\r
345RuntimeDriverSetVirtualAddressMap (\r
346 IN UINTN MemoryMapSize,\r
347 IN UINTN DescriptorSize,\r
348 IN UINT32 DescriptorVersion,\r
349 IN EFI_MEMORY_DESCRIPTOR *VirtualMap\r
350 )\r
351{\r
352 RUNTIME_NOTIFY_EVENT_DATA *RuntimeEvent;\r
353 RUNTIME_IMAGE_RELOCATION_DATA *RuntimeImage;\r
354 LIST_ENTRY *Link;\r
355 UINTN Index;\r
356 UINTN Index1;\r
357 EFI_DRIVER_OS_HANDOFF_HEADER *DriverOsHandoffHeader;\r
358 EFI_DRIVER_OS_HANDOFF *DriverOsHandoff;\r
359\r
360 //\r
361 // Can only switch to virtual addresses once the memory map is locked down,\r
362 // and can only set it once\r
363 //\r
364 if (!EfiAtRuntime () || mEfiVirtualMode) {\r
365 return EFI_UNSUPPORTED;\r
366 }\r
367 //\r
368 // Only understand the original descriptor format\r
369 //\r
370 if (DescriptorVersion != EFI_MEMORY_DESCRIPTOR_VERSION || DescriptorSize < sizeof (EFI_MEMORY_DESCRIPTOR)) {\r
371 return EFI_INVALID_PARAMETER;\r
372 }\r
373 //\r
374 // BugBug: Add code here to verify the memory map. We should\r
375 // cache a copy of the system memory map in the EFI System Table\r
376 // as a GUID pointer pair.\r
377 //\r
378 //\r
379 // Make sure all virtual translations are satisfied\r
380 //\r
381 mVirtualMapMaxIndex = MemoryMapSize / DescriptorSize;\r
382\r
383 //\r
384 // BugBug :The following code does not work hence commented out.\r
385 // Need to be replaced by something that works.\r
386 //\r
387 // VirtEntry = VirtualMap;\r
388 // for (Index = 0; Index < mVirtualMapMaxIndex; Index++) {\r
389 // if (((VirtEntry->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) &&\r
390 // (VirtEntry->VirtualStart != 0) ) {\r
391 // return EFI_NO_MAPPING;\r
392 // }\r
393 // VirtEntry = NextMemoryDescriptor(VirtEntry, DescriptorSize);\r
394 // }\r
395 //\r
396 // We are now committed to go to virtual mode, so lets get to it!\r
397 //\r
398 mEfiVirtualMode = TRUE;\r
399\r
400 //\r
401 // ConvertPointer() needs this mVirtualMap to do the conversion. So set up\r
402 // globals we need to parse the virtual address map.\r
403 //\r
404 mVirtualMapDescriptorSize = DescriptorSize;\r
405 mVirtualMap = VirtualMap;\r
406\r
407 //\r
408 // Signal all the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE events.\r
409 // The core call RuntimeDriverRegisterEvent() for\r
410 // every runtime event and we stored them in the mEventList\r
411 //\r
412 //\r
413 // Currently the bug in StatusCode/RuntimeLib has been fixed, it will\r
414 // check whether in Runtime or not (this is judged by looking at\r
415 // mEfiAtRuntime global So this ReportStatusCode will work\r
416 //\r
417 REPORT_STATUS_CODE (\r
418 EFI_PROGRESS_CODE,\r
419 (EFI_SOFTWARE_EFI_BOOT_SERVICE | EFI_SW_RS_PC_SET_VIRTUAL_ADDRESS_MAP)\r
420 );\r
421\r
422 //\r
423 // BugBug - Commented out for now because the status code driver is not\r
424 // ready for runtime yet. The Status Code driver calls data hub with does\r
425 // a bunch of Boot Service things (locks, AllocatePool) and hangs somewhere\r
426 // on the way.\r
427 //\r
428 // ReportStatusCode (\r
429 // EfiProgressCode, EfiMaxErrorSeverity,\r
430 // 0x03, 0x01, 12, // ReadyToBoot Progress code\r
431 // 0x00, 30, L"ConvertPointer"\r
432 // );\r
433 //\r
434 for (Link = mEventList.ForwardLink; Link != &mEventList; Link = Link->ForwardLink) {\r
435 RuntimeEvent = _CR (Link, RUNTIME_NOTIFY_EVENT_DATA, Link);\r
436 if ((RuntimeEvent->Type & EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE) == EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE) {\r
437 RuntimeEvent->NotifyFunction (\r
438 RuntimeEvent->Event,\r
439 RuntimeEvent->NotifyContext\r
440 );\r
441 }\r
442 }\r
443 //\r
444 // Relocate runtime images. Runtime images loaded before the runtime AP was\r
445 // started will not be relocated, since they would not have gotten registered.\r
446 // This includes the code in this file.\r
447 //\r
448 for (Link = mRelocationList.ForwardLink; Link != &mRelocationList; Link = Link->ForwardLink) {\r
449 RuntimeImage = _CR (Link, RUNTIME_IMAGE_RELOCATION_DATA, Link);\r
450 if (RuntimeImage->Valid) {\r
451 RelocatePeImageForRuntime (RuntimeImage);\r
452 }\r
453 }\r
454 //\r
455 // Convert all the Runtime Services except ConvertPointer() and SetVirtualAddressMap()\r
456 // and recompute the CRC-32\r
457 //\r
458 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->GetTime);\r
459 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->SetTime);\r
460 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->GetWakeupTime);\r
461 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->SetWakeupTime);\r
462 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->ResetSystem);\r
463 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->GetNextHighMonotonicCount);\r
464 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->GetVariable);\r
465 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->SetVariable);\r
466 RuntimeDriverConvertInternalPointer ((VOID **) &gRT->GetNextVariableName);\r
467 RuntimeDriverCalculateEfiHdrCrc (&gRT->Hdr);\r
468\r
469 //\r
470 // Convert the UGA OS Handoff Table if it is present in the Configuration Table\r
471 //\r
472 for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {\r
473 if (CompareGuid (&mLocalEfiUgaIoProtocolGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {\r
474 DriverOsHandoffHeader = gST->ConfigurationTable[Index].VendorTable;\r
475 for (Index1 = 0; Index1 < DriverOsHandoffHeader->NumberOfEntries; Index1++) {\r
476 DriverOsHandoff = (EFI_DRIVER_OS_HANDOFF *)\r
477 (\r
478 (UINTN) DriverOsHandoffHeader +\r
479 DriverOsHandoffHeader->HeaderSize +\r
480 Index1 *\r
481 DriverOsHandoffHeader->SizeOfEntries\r
482 );\r
483 RuntimeDriverConvertPointer (EFI_OPTIONAL_POINTER, (VOID **) &DriverOsHandoff->DevicePath);\r
484 RuntimeDriverConvertPointer (EFI_OPTIONAL_POINTER, (VOID **) &DriverOsHandoff->PciRomImage);\r
485 }\r
486\r
487 RuntimeDriverConvertPointer (EFI_OPTIONAL_POINTER, (VOID **) &(gST->ConfigurationTable[Index].VendorTable));\r
488 }\r
489 }\r
490 //\r
491 // Convert the runtime fields of the EFI System Table and recompute the CRC-32\r
492 //\r
493 RuntimeDriverConvertInternalPointer ((VOID **) &gST->FirmwareVendor);\r
494 RuntimeDriverConvertInternalPointer ((VOID **) &gST->ConfigurationTable);\r
495 RuntimeDriverConvertInternalPointer ((VOID **) &gST->RuntimeServices);\r
496 RuntimeDriverCalculateEfiHdrCrc (&gST->Hdr);\r
497\r
498 //\r
499 // At this point, gRT and gST are physical pointers, but the contents of these tables\r
500 // have been converted to runtime.\r
501 //\r
502 //\r
503 // mVirtualMap is only valid during SetVirtualAddressMap() call\r
504 //\r
505 mVirtualMap = NULL;\r
506\r
507 return EFI_SUCCESS;\r
508}\r
509\r
510EFI_STATUS\r
511EFIAPI\r
512RuntimeDriverInitialize (\r
513 IN EFI_HANDLE ImageHandle,\r
514 IN EFI_SYSTEM_TABLE *SystemTable\r
515 )\r
516/*++\r
517\r
518Routine Description:\r
519 Install Runtime AP. This code includes the EfiDriverLib, but it functions at\r
520 RT in physical mode. The only Lib services are gBS, gRT, and the DEBUG and\r
521 ASSERT macros (they do ReportStatusCode).\r
522\r
523Arguments:\r
524 (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)\r
525\r
526Returns:\r
527\r
528 EFI_SUCEESS - Runtime Driver Architectural Protocol Installed\r
529\r
530 Other - Return value from gBS->InstallMultipleProtocolInterfaces\r
531\r
532--*/\r
533{\r
534 EFI_STATUS Status;\r
535\r
536 //\r
537 // This image needs to be exclued from relocation for virtual mode, so cache\r
538 // a copy of the Loaded Image protocol to test later.\r
539 //\r
540 Status = gBS->HandleProtocol (\r
541 ImageHandle,\r
542 &gEfiLoadedImageProtocolGuid,\r
543 (VOID **) &mMyLoadedImage\r
544 );\r
545 ASSERT_EFI_ERROR (Status);\r
546\r
547 //\r
548 // Initialize the table used to compute 32-bit CRCs\r
549 //\r
550 RuntimeDriverInitializeCrc32Table ();\r
551\r
552 //\r
553 // Fill in the entries of the EFI Boot Services and EFI Runtime Services Tables\r
554 //\r
555 gBS->CalculateCrc32 = RuntimeDriverCalculateCrc32;\r
556 gRT->SetVirtualAddressMap = RuntimeDriverSetVirtualAddressMap;\r
557 gRT->ConvertPointer = RuntimeDriverConvertPointer;\r
558\r
559 //\r
560 // Install the Runtime Architectural Protocol onto a new handle\r
561 //\r
562 Status = gBS->InstallMultipleProtocolInterfaces (\r
563 &mRuntimeHandle,\r
564 &gEfiRuntimeArchProtocolGuid,\r
565 &mRuntime,\r
566 NULL\r
567 );\r
568 ASSERT_EFI_ERROR (Status);\r
569\r
570 mRuntimeImageNumber = 0;\r
571 mRuntimeEventNumber = 0;\r
572\r
573 return Status;\r
574}\r
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