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c049fc99 JY |
1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r | |
4 | 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 | **/\r | |
13 | \r | |
14 | #include "DmaProtection.h"\r | |
15 | \r | |
16 | EFI_ACPI_SDT_PROTOCOL *mAcpiSdt;\r | |
17 | UINT64 mBelow4GMemoryLimit;\r | |
18 | UINT64 mAbove4GMemoryLimit;\r | |
19 | \r | |
20 | EDKII_PLATFORM_VTD_POLICY_PROTOCOL *mPlatformVTdPolicy;\r | |
21 | \r | |
22 | /**\r | |
23 | return the UEFI memory information.\r | |
24 | \r | |
25 | @param[out] Below4GMemoryLimit The below 4GiB memory limit\r | |
26 | @param[out] Above4GMemoryLimit The above 4GiB memory limit\r | |
27 | **/\r | |
28 | VOID\r | |
29 | ReturnUefiMemoryMap (\r | |
30 | OUT UINT64 *Below4GMemoryLimit,\r | |
31 | OUT UINT64 *Above4GMemoryLimit\r | |
32 | )\r | |
33 | {\r | |
34 | EFI_STATUS Status;\r | |
35 | EFI_MEMORY_DESCRIPTOR *EfiMemoryMap;\r | |
36 | EFI_MEMORY_DESCRIPTOR *EfiMemoryMapEnd;\r | |
37 | EFI_MEMORY_DESCRIPTOR *EfiEntry;\r | |
38 | EFI_MEMORY_DESCRIPTOR *NextEfiEntry;\r | |
39 | EFI_MEMORY_DESCRIPTOR TempEfiEntry;\r | |
40 | UINTN EfiMemoryMapSize;\r | |
41 | UINTN EfiMapKey;\r | |
42 | UINTN EfiDescriptorSize;\r | |
43 | UINT32 EfiDescriptorVersion;\r | |
44 | UINT64 MemoryBlockLength;\r | |
45 | \r | |
46 | *Below4GMemoryLimit = 0;\r | |
47 | *Above4GMemoryLimit = 0;\r | |
48 | \r | |
49 | //\r | |
50 | // Get the EFI memory map.\r | |
51 | //\r | |
52 | EfiMemoryMapSize = 0;\r | |
53 | EfiMemoryMap = NULL;\r | |
54 | Status = gBS->GetMemoryMap (\r | |
55 | &EfiMemoryMapSize,\r | |
56 | EfiMemoryMap,\r | |
57 | &EfiMapKey,\r | |
58 | &EfiDescriptorSize,\r | |
59 | &EfiDescriptorVersion\r | |
60 | );\r | |
61 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r | |
62 | \r | |
63 | do {\r | |
64 | //\r | |
65 | // Use size returned back plus 1 descriptor for the AllocatePool.\r | |
66 | // We don't just multiply by 2 since the "for" loop below terminates on\r | |
67 | // EfiMemoryMapEnd which is dependent upon EfiMemoryMapSize. Otherwize\r | |
68 | // we process bogus entries and create bogus E820 entries.\r | |
69 | //\r | |
70 | EfiMemoryMap = (EFI_MEMORY_DESCRIPTOR *) AllocatePool (EfiMemoryMapSize);\r | |
71 | ASSERT (EfiMemoryMap != NULL);\r | |
72 | Status = gBS->GetMemoryMap (\r | |
73 | &EfiMemoryMapSize,\r | |
74 | EfiMemoryMap,\r | |
75 | &EfiMapKey,\r | |
76 | &EfiDescriptorSize,\r | |
77 | &EfiDescriptorVersion\r | |
78 | );\r | |
79 | if (EFI_ERROR (Status)) {\r | |
80 | FreePool (EfiMemoryMap);\r | |
81 | }\r | |
82 | } while (Status == EFI_BUFFER_TOO_SMALL);\r | |
83 | \r | |
84 | ASSERT_EFI_ERROR (Status);\r | |
85 | \r | |
86 | //\r | |
87 | // Sort memory map from low to high\r | |
88 | //\r | |
89 | EfiEntry = EfiMemoryMap;\r | |
90 | NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r | |
91 | EfiMemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) EfiMemoryMap + EfiMemoryMapSize);\r | |
92 | while (EfiEntry < EfiMemoryMapEnd) {\r | |
93 | while (NextEfiEntry < EfiMemoryMapEnd) {\r | |
94 | if (EfiEntry->PhysicalStart > NextEfiEntry->PhysicalStart) {\r | |
95 | CopyMem (&TempEfiEntry, EfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));\r | |
96 | CopyMem (EfiEntry, NextEfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));\r | |
97 | CopyMem (NextEfiEntry, &TempEfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));\r | |
98 | }\r | |
99 | \r | |
100 | NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (NextEfiEntry, EfiDescriptorSize);\r | |
101 | }\r | |
102 | \r | |
103 | EfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r | |
104 | NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r | |
105 | }\r | |
106 | \r | |
107 | //\r | |
108 | //\r | |
109 | //\r | |
110 | DEBUG ((DEBUG_INFO, "MemoryMap:\n"));\r | |
111 | EfiEntry = EfiMemoryMap;\r | |
112 | EfiMemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) EfiMemoryMap + EfiMemoryMapSize);\r | |
113 | while (EfiEntry < EfiMemoryMapEnd) {\r | |
114 | MemoryBlockLength = (UINT64) (LShiftU64 (EfiEntry->NumberOfPages, 12));\r | |
115 | DEBUG ((DEBUG_INFO, "Entry(0x%02x) 0x%016lx - 0x%016lx\n", EfiEntry->Type, EfiEntry->PhysicalStart, EfiEntry->PhysicalStart + MemoryBlockLength));\r | |
116 | switch (EfiEntry->Type) {\r | |
117 | case EfiLoaderCode:\r | |
118 | case EfiLoaderData:\r | |
119 | case EfiBootServicesCode:\r | |
120 | case EfiBootServicesData:\r | |
121 | case EfiConventionalMemory:\r | |
122 | case EfiRuntimeServicesCode:\r | |
123 | case EfiRuntimeServicesData:\r | |
124 | case EfiACPIReclaimMemory:\r | |
125 | case EfiACPIMemoryNVS:\r | |
126 | case EfiReservedMemoryType:\r | |
127 | if ((EfiEntry->PhysicalStart + MemoryBlockLength) <= BASE_1MB) {\r | |
128 | //\r | |
129 | // Skip the memory block is under 1MB\r | |
130 | //\r | |
131 | } else if (EfiEntry->PhysicalStart >= BASE_4GB) {\r | |
132 | if (*Above4GMemoryLimit < EfiEntry->PhysicalStart + MemoryBlockLength) {\r | |
133 | *Above4GMemoryLimit = EfiEntry->PhysicalStart + MemoryBlockLength;\r | |
134 | }\r | |
135 | } else {\r | |
136 | if (*Below4GMemoryLimit < EfiEntry->PhysicalStart + MemoryBlockLength) {\r | |
137 | *Below4GMemoryLimit = EfiEntry->PhysicalStart + MemoryBlockLength;\r | |
138 | }\r | |
139 | }\r | |
140 | break;\r | |
141 | }\r | |
142 | EfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r | |
143 | }\r | |
144 | \r | |
145 | FreePool (EfiMemoryMap);\r | |
146 | \r | |
147 | DEBUG ((DEBUG_INFO, "Result:\n"));\r | |
148 | DEBUG ((DEBUG_INFO, "Below4GMemoryLimit: 0x%016lx\n", *Below4GMemoryLimit));\r | |
149 | DEBUG ((DEBUG_INFO, "Above4GMemoryLimit: 0x%016lx\n", *Above4GMemoryLimit));\r | |
150 | \r | |
151 | return ;\r | |
152 | }\r | |
153 | \r | |
f77d35c7 JY |
154 | /**\r |
155 | The scan bus callback function to always enable page attribute.\r | |
156 | \r | |
157 | @param[in] Context The context of the callback.\r | |
158 | @param[in] Segment The segment of the source.\r | |
159 | @param[in] Bus The bus of the source.\r | |
160 | @param[in] Device The device of the source.\r | |
161 | @param[in] Function The function of the source.\r | |
162 | \r | |
163 | @retval EFI_SUCCESS The VTd entry is updated to always enable all DMA access for the specific device.\r | |
164 | **/\r | |
165 | EFI_STATUS\r | |
166 | EFIAPI\r | |
167 | ScanBusCallbackAlwaysEnablePageAttribute (\r | |
168 | IN VOID *Context,\r | |
169 | IN UINT16 Segment,\r | |
170 | IN UINT8 Bus,\r | |
171 | IN UINT8 Device,\r | |
172 | IN UINT8 Function\r | |
173 | )\r | |
174 | {\r | |
175 | VTD_SOURCE_ID SourceId;\r | |
176 | EFI_STATUS Status;\r | |
177 | \r | |
178 | SourceId.Bits.Bus = Bus;\r | |
179 | SourceId.Bits.Device = Device;\r | |
180 | SourceId.Bits.Function = Function;\r | |
181 | Status = AlwaysEnablePageAttribute (Segment, SourceId);\r | |
182 | return Status;\r | |
183 | }\r | |
184 | \r | |
185 | /**\r | |
186 | Always enable the VTd page attribute for the device in the DeviceScope.\r | |
187 | \r | |
188 | @param[in] DeviceScope the input device scope data structure\r | |
189 | \r | |
190 | @retval EFI_SUCCESS The VTd entry is updated to always enable all DMA access for the specific device in the device scope.\r | |
191 | **/\r | |
192 | EFI_STATUS\r | |
193 | AlwaysEnablePageAttributeDeviceScope (\r | |
194 | IN EDKII_PLATFORM_VTD_DEVICE_SCOPE *DeviceScope\r | |
195 | )\r | |
196 | {\r | |
197 | UINT8 Bus;\r | |
198 | UINT8 Device;\r | |
199 | UINT8 Function;\r | |
200 | VTD_SOURCE_ID SourceId;\r | |
201 | UINT8 SecondaryBusNumber;\r | |
202 | EFI_STATUS Status;\r | |
203 | \r | |
204 | Status = GetPciBusDeviceFunction (DeviceScope->SegmentNumber, &DeviceScope->DeviceScope, &Bus, &Device, &Function);\r | |
205 | \r | |
206 | if (DeviceScope->DeviceScope.Type == EFI_ACPI_DEVICE_SCOPE_ENTRY_TYPE_PCI_BRIDGE) {\r | |
207 | //\r | |
208 | // Need scan the bridge and add all devices.\r | |
209 | //\r | |
210 | SecondaryBusNumber = PciSegmentRead8 (PCI_SEGMENT_LIB_ADDRESS(DeviceScope->SegmentNumber, Bus, Device, Function, PCI_BRIDGE_SECONDARY_BUS_REGISTER_OFFSET));\r | |
211 | Status = ScanPciBus (NULL, DeviceScope->SegmentNumber, SecondaryBusNumber, ScanBusCallbackAlwaysEnablePageAttribute);\r | |
212 | return Status;\r | |
213 | } else {\r | |
214 | SourceId.Bits.Bus = Bus;\r | |
215 | SourceId.Bits.Device = Device;\r | |
216 | SourceId.Bits.Function = Function;\r | |
217 | Status = AlwaysEnablePageAttribute (DeviceScope->SegmentNumber, SourceId);\r | |
218 | return Status;\r | |
219 | }\r | |
220 | }\r | |
221 | \r | |
222 | /**\r | |
223 | Always enable the VTd page attribute for the device matching DeviceId.\r | |
224 | \r | |
225 | @param[in] PciDeviceId the input PCI device ID\r | |
226 | \r | |
227 | @retval EFI_SUCCESS The VTd entry is updated to always enable all DMA access for the specific device matching DeviceId.\r | |
228 | **/\r | |
229 | EFI_STATUS\r | |
230 | AlwaysEnablePageAttributePciDeviceId (\r | |
231 | IN EDKII_PLATFORM_VTD_PCI_DEVICE_ID *PciDeviceId\r | |
232 | )\r | |
233 | {\r | |
234 | UINTN VtdIndex;\r | |
235 | UINTN PciIndex;\r | |
236 | PCI_DEVICE_DATA *PciDeviceData;\r | |
237 | EFI_STATUS Status;\r | |
238 | \r | |
239 | for (VtdIndex = 0; VtdIndex < mVtdUnitNumber; VtdIndex++) {\r | |
240 | for (PciIndex = 0; PciIndex < mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceDataNumber; PciIndex++) {\r | |
241 | PciDeviceData = &mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceData[PciIndex];\r | |
242 | \r | |
243 | if (((PciDeviceId->VendorId == 0xFFFF) || (PciDeviceId->VendorId == PciDeviceData->PciDeviceId.VendorId)) &&\r | |
244 | ((PciDeviceId->DeviceId == 0xFFFF) || (PciDeviceId->DeviceId == PciDeviceData->PciDeviceId.DeviceId)) &&\r | |
245 | ((PciDeviceId->RevisionId == 0xFF) || (PciDeviceId->RevisionId == PciDeviceData->PciDeviceId.RevisionId)) &&\r | |
246 | ((PciDeviceId->SubsystemVendorId == 0xFFFF) || (PciDeviceId->SubsystemVendorId == PciDeviceData->PciDeviceId.SubsystemVendorId)) &&\r | |
247 | ((PciDeviceId->SubsystemDeviceId == 0xFFFF) || (PciDeviceId->SubsystemDeviceId == PciDeviceData->PciDeviceId.SubsystemDeviceId)) ) {\r | |
248 | Status = AlwaysEnablePageAttribute (mVtdUnitInformation[VtdIndex].Segment, PciDeviceData->PciSourceId);\r | |
249 | if (EFI_ERROR(Status)) {\r | |
250 | continue;\r | |
251 | }\r | |
252 | }\r | |
253 | }\r | |
254 | }\r | |
255 | return EFI_SUCCESS;\r | |
256 | }\r | |
257 | \r | |
258 | /**\r | |
259 | Always enable the VTd page attribute for the device.\r | |
260 | \r | |
261 | @param[in] DeviceInfo the exception device information\r | |
262 | \r | |
263 | @retval EFI_SUCCESS The VTd entry is updated to always enable all DMA access for the specific device in the device info.\r | |
264 | **/\r | |
265 | EFI_STATUS\r | |
266 | AlwaysEnablePageAttributeExceptionDeviceInfo (\r | |
267 | IN EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO *DeviceInfo\r | |
268 | )\r | |
269 | {\r | |
270 | switch (DeviceInfo->Type) {\r | |
271 | case EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_DEVICE_SCOPE:\r | |
272 | return AlwaysEnablePageAttributeDeviceScope ((VOID *)(DeviceInfo + 1));\r | |
273 | case EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_PCI_DEVICE_ID:\r | |
274 | return AlwaysEnablePageAttributePciDeviceId ((VOID *)(DeviceInfo + 1));\r | |
275 | default:\r | |
276 | return EFI_UNSUPPORTED;\r | |
277 | }\r | |
278 | }\r | |
279 | \r | |
c049fc99 JY |
280 | /**\r |
281 | Initialize platform VTd policy.\r | |
282 | **/\r | |
283 | VOID\r | |
284 | InitializePlatformVTdPolicy (\r | |
285 | VOID\r | |
286 | )\r | |
287 | {\r | |
f77d35c7 JY |
288 | EFI_STATUS Status;\r |
289 | UINTN DeviceInfoCount;\r | |
290 | VOID *DeviceInfo;\r | |
291 | EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO *ThisDeviceInfo;\r | |
292 | UINTN Index;\r | |
c049fc99 JY |
293 | \r |
294 | //\r | |
295 | // It is optional.\r | |
296 | //\r | |
297 | Status = gBS->LocateProtocol (\r | |
298 | &gEdkiiPlatformVTdPolicyProtocolGuid,\r | |
299 | NULL,\r | |
300 | (VOID **)&mPlatformVTdPolicy\r | |
301 | );\r | |
302 | if (!EFI_ERROR(Status)) {\r | |
f77d35c7 | 303 | DEBUG ((DEBUG_INFO, "InitializePlatformVTdPolicy\n"));\r |
c049fc99 JY |
304 | Status = mPlatformVTdPolicy->GetExceptionDeviceList (mPlatformVTdPolicy, &DeviceInfoCount, &DeviceInfo);\r |
305 | if (!EFI_ERROR(Status)) {\r | |
f77d35c7 | 306 | ThisDeviceInfo = DeviceInfo;\r |
c049fc99 | 307 | for (Index = 0; Index < DeviceInfoCount; Index++) {\r |
f77d35c7 JY |
308 | if (ThisDeviceInfo->Type == EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_END) {\r |
309 | break;\r | |
310 | }\r | |
311 | AlwaysEnablePageAttributeExceptionDeviceInfo (ThisDeviceInfo);\r | |
312 | ThisDeviceInfo = (VOID *)((UINTN)ThisDeviceInfo + ThisDeviceInfo->Length);\r | |
c049fc99 JY |
313 | }\r |
314 | FreePool (DeviceInfo);\r | |
315 | }\r | |
316 | }\r | |
317 | }\r | |
318 | \r | |
319 | /**\r | |
320 | Setup VTd engine.\r | |
321 | **/\r | |
322 | VOID\r | |
323 | SetupVtd (\r | |
324 | VOID\r | |
325 | )\r | |
326 | {\r | |
327 | EFI_STATUS Status;\r | |
328 | VOID *PciEnumerationComplete;\r | |
329 | UINTN Index;\r | |
330 | UINT64 Below4GMemoryLimit;\r | |
331 | UINT64 Above4GMemoryLimit;\r | |
332 | \r | |
333 | //\r | |
334 | // PCI Enumeration must be done\r | |
335 | //\r | |
336 | Status = gBS->LocateProtocol (\r | |
337 | &gEfiPciEnumerationCompleteProtocolGuid,\r | |
338 | NULL,\r | |
339 | &PciEnumerationComplete\r | |
340 | );\r | |
341 | ASSERT_EFI_ERROR (Status);\r | |
342 | \r | |
343 | ReturnUefiMemoryMap (&Below4GMemoryLimit, &Above4GMemoryLimit);\r | |
344 | Below4GMemoryLimit = ALIGN_VALUE_UP(Below4GMemoryLimit, SIZE_256MB);\r | |
345 | DEBUG ((DEBUG_INFO, " Adjusted Below4GMemoryLimit: 0x%016lx\n", Below4GMemoryLimit));\r | |
346 | \r | |
347 | mBelow4GMemoryLimit = Below4GMemoryLimit;\r | |
348 | mAbove4GMemoryLimit = Above4GMemoryLimit;\r | |
349 | \r | |
350 | //\r | |
351 | // 1. setup\r | |
352 | //\r | |
353 | DEBUG ((DEBUG_INFO, "GetDmarAcpiTable\n"));\r | |
354 | Status = GetDmarAcpiTable ();\r | |
355 | if (EFI_ERROR (Status)) {\r | |
356 | return;\r | |
357 | }\r | |
358 | DEBUG ((DEBUG_INFO, "ParseDmarAcpiTable\n"));\r | |
359 | Status = ParseDmarAcpiTableDrhd ();\r | |
360 | if (EFI_ERROR (Status)) {\r | |
361 | return;\r | |
362 | }\r | |
363 | DEBUG ((DEBUG_INFO, "PrepareVtdConfig\n"));\r | |
364 | PrepareVtdConfig ();\r | |
365 | \r | |
366 | //\r | |
367 | // 2. initialization\r | |
368 | //\r | |
369 | DEBUG ((DEBUG_INFO, "SetupTranslationTable\n"));\r | |
370 | Status = SetupTranslationTable ();\r | |
371 | if (EFI_ERROR (Status)) {\r | |
372 | return;\r | |
373 | }\r | |
374 | \r | |
375 | InitializePlatformVTdPolicy ();\r | |
376 | \r | |
377 | ParseDmarAcpiTableRmrr ();\r | |
378 | \r | |
379 | for (Index = 0; Index < mVtdUnitNumber; Index++) {\r | |
380 | DEBUG ((DEBUG_INFO,"VTD Unit %d (Segment: %04x)\n", Index, mVtdUnitInformation[Index].Segment));\r | |
381 | if (mVtdUnitInformation[Index].ExtRootEntryTable != NULL) {\r | |
382 | DumpDmarExtContextEntryTable (mVtdUnitInformation[Index].ExtRootEntryTable);\r | |
383 | }\r | |
384 | if (mVtdUnitInformation[Index].RootEntryTable != NULL) {\r | |
385 | DumpDmarContextEntryTable (mVtdUnitInformation[Index].RootEntryTable);\r | |
386 | }\r | |
387 | }\r | |
388 | \r | |
389 | //\r | |
390 | // 3. enable\r | |
391 | //\r | |
392 | DEBUG ((DEBUG_INFO, "EnableDmar\n"));\r | |
393 | Status = EnableDmar ();\r | |
394 | if (EFI_ERROR (Status)) {\r | |
395 | return;\r | |
396 | }\r | |
397 | DEBUG ((DEBUG_INFO, "DumpVtdRegs\n"));\r | |
398 | DumpVtdRegsAll ();\r | |
399 | }\r | |
400 | \r | |
401 | /**\r | |
402 | ACPI notification function.\r | |
403 | \r | |
404 | @param[in] Table A pointer to the ACPI table header.\r | |
405 | @param[in] Version The ACPI table's version.\r | |
406 | @param[in] TableKey The table key for this ACPI table.\r | |
407 | \r | |
408 | @retval EFI_SUCCESS The notification function is executed.\r | |
409 | **/\r | |
410 | EFI_STATUS\r | |
411 | EFIAPI\r | |
412 | AcpiNotificationFunc (\r | |
413 | IN EFI_ACPI_SDT_HEADER *Table,\r | |
414 | IN EFI_ACPI_TABLE_VERSION Version,\r | |
415 | IN UINTN TableKey\r | |
416 | )\r | |
417 | {\r | |
418 | if (Table->Signature == EFI_ACPI_4_0_DMA_REMAPPING_TABLE_SIGNATURE) {\r | |
419 | DEBUG((DEBUG_INFO, "Vtd AcpiNotificationFunc\n"));\r | |
420 | SetupVtd ();\r | |
421 | }\r | |
422 | return EFI_SUCCESS;\r | |
423 | }\r | |
424 | \r | |
425 | /**\r | |
426 | Exit boot service callback function.\r | |
427 | \r | |
428 | @param[in] Event The event handle.\r | |
429 | @param[in] Context The event content.\r | |
430 | **/\r | |
431 | VOID\r | |
432 | EFIAPI\r | |
433 | OnExitBootServices (\r | |
434 | IN EFI_EVENT Event,\r | |
435 | IN VOID *Context\r | |
436 | )\r | |
437 | {\r | |
438 | DEBUG ((DEBUG_INFO, "Vtd OnExitBootServices\n"));\r | |
439 | DumpVtdRegsAll ();\r | |
c50596a7 JY |
440 | \r |
441 | if ((PcdGet8(PcdVTdPolicyPropertyMask) & BIT1) == 0) {\r | |
442 | DisableDmar ();\r | |
443 | DumpVtdRegsAll ();\r | |
444 | }\r | |
c049fc99 JY |
445 | }\r |
446 | \r | |
447 | /**\r | |
448 | Legacy boot callback function.\r | |
449 | \r | |
450 | @param[in] Event The event handle.\r | |
451 | @param[in] Context The event content.\r | |
452 | **/\r | |
453 | VOID\r | |
454 | EFIAPI\r | |
455 | OnLegacyBoot (\r | |
456 | EFI_EVENT Event,\r | |
457 | VOID *Context\r | |
458 | )\r | |
459 | {\r | |
460 | DEBUG ((DEBUG_INFO, "Vtd OnLegacyBoot\n"));\r | |
461 | DumpVtdRegsAll ();\r | |
462 | DisableDmar ();\r | |
463 | DumpVtdRegsAll ();\r | |
464 | }\r | |
465 | \r | |
466 | /**\r | |
467 | Initialize DMA protection.\r | |
468 | **/\r | |
469 | VOID\r | |
470 | InitializeDmaProtection (\r | |
471 | VOID\r | |
472 | )\r | |
473 | {\r | |
474 | EFI_STATUS Status;\r | |
475 | EFI_EVENT ExitBootServicesEvent;\r | |
476 | EFI_EVENT LegacyBootEvent;\r | |
477 | \r | |
478 | Status = gBS->LocateProtocol (&gEfiAcpiSdtProtocolGuid, NULL, (VOID **) &mAcpiSdt);\r | |
479 | ASSERT_EFI_ERROR (Status);\r | |
480 | \r | |
481 | Status = mAcpiSdt->RegisterNotify (TRUE, AcpiNotificationFunc);\r | |
482 | ASSERT_EFI_ERROR (Status);\r | |
483 | \r | |
484 | Status = gBS->CreateEventEx (\r | |
485 | EVT_NOTIFY_SIGNAL,\r | |
01df5103 | 486 | TPL_CALLBACK,\r |
c049fc99 JY |
487 | OnExitBootServices,\r |
488 | NULL,\r | |
489 | &gEfiEventExitBootServicesGuid,\r | |
490 | &ExitBootServicesEvent\r | |
491 | );\r | |
492 | ASSERT_EFI_ERROR (Status);\r | |
493 | \r | |
494 | Status = EfiCreateEventLegacyBootEx (\r | |
01df5103 | 495 | TPL_CALLBACK,\r |
c049fc99 JY |
496 | OnLegacyBoot,\r |
497 | NULL,\r | |
498 | &LegacyBootEvent\r | |
499 | );\r | |
500 | ASSERT_EFI_ERROR (Status);\r | |
501 | \r | |
502 | return ;\r | |
503 | }\r |