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1 | /** @file\r | |
2 | The realization of EFI_RAM_DISK_PROTOCOL.\r | |
3 | \r | |
4 | Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>\r | |
5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
7 | \r | |
8 | **/\r | |
9 | \r | |
10 | #include "RamDiskImpl.h"\r | |
11 | \r | |
12 | RAM_DISK_PRIVATE_DATA mRamDiskPrivateDataTemplate = {\r | |
13 | RAM_DISK_PRIVATE_DATA_SIGNATURE,\r | |
14 | NULL\r | |
15 | };\r | |
16 | \r | |
17 | MEDIA_RAM_DISK_DEVICE_PATH mRamDiskDeviceNodeTemplate = {\r | |
18 | {\r | |
19 | MEDIA_DEVICE_PATH,\r | |
20 | MEDIA_RAM_DISK_DP,\r | |
21 | {\r | |
22 | (UINT8) (sizeof (MEDIA_RAM_DISK_DEVICE_PATH)),\r | |
23 | (UINT8) ((sizeof (MEDIA_RAM_DISK_DEVICE_PATH)) >> 8)\r | |
24 | }\r | |
25 | }\r | |
26 | };\r | |
27 | \r | |
28 | BOOLEAN mRamDiskSsdtTableKeyValid = FALSE;\r | |
29 | UINTN mRamDiskSsdtTableKey;\r | |
30 | \r | |
31 | \r | |
32 | /**\r | |
33 | Initialize the RAM disk device node.\r | |
34 | \r | |
35 | @param[in] PrivateData Points to RAM disk private data.\r | |
36 | @param[in, out] RamDiskDevNode Points to the RAM disk device node.\r | |
37 | \r | |
38 | **/\r | |
39 | VOID\r | |
40 | RamDiskInitDeviceNode (\r | |
41 | IN RAM_DISK_PRIVATE_DATA *PrivateData,\r | |
42 | IN OUT MEDIA_RAM_DISK_DEVICE_PATH *RamDiskDevNode\r | |
43 | )\r | |
44 | {\r | |
45 | WriteUnaligned64 (\r | |
46 | (UINT64 *) &(RamDiskDevNode->StartingAddr[0]),\r | |
47 | (UINT64) PrivateData->StartingAddr\r | |
48 | );\r | |
49 | WriteUnaligned64 (\r | |
50 | (UINT64 *) &(RamDiskDevNode->EndingAddr[0]),\r | |
51 | (UINT64) PrivateData->StartingAddr + PrivateData->Size - 1\r | |
52 | );\r | |
53 | CopyGuid (&RamDiskDevNode->TypeGuid, &PrivateData->TypeGuid);\r | |
54 | RamDiskDevNode->Instance = PrivateData->InstanceNumber;\r | |
55 | }\r | |
56 | \r | |
57 | \r | |
58 | /**\r | |
59 | Initialize and publish NVDIMM root device SSDT in ACPI table.\r | |
60 | \r | |
61 | @retval EFI_SUCCESS The NVDIMM root device SSDT is published.\r | |
62 | @retval Others The NVDIMM root device SSDT is not published.\r | |
63 | \r | |
64 | **/\r | |
65 | EFI_STATUS\r | |
66 | RamDiskPublishSsdt (\r | |
67 | VOID\r | |
68 | )\r | |
69 | {\r | |
70 | EFI_STATUS Status;\r | |
71 | EFI_ACPI_DESCRIPTION_HEADER *Table;\r | |
72 | UINTN SectionInstance;\r | |
73 | UINTN TableSize;\r | |
74 | \r | |
75 | Status = EFI_SUCCESS;\r | |
76 | SectionInstance = 0;\r | |
77 | \r | |
78 | //\r | |
79 | // Scan all the EFI raw section instances in FV to find the NVDIMM root\r | |
80 | // device SSDT.\r | |
81 | //\r | |
82 | while (TRUE) {\r | |
83 | Status = GetSectionFromFv (\r | |
84 | &gEfiCallerIdGuid,\r | |
85 | EFI_SECTION_RAW,\r | |
86 | SectionInstance,\r | |
87 | (VOID **) &Table,\r | |
88 | &TableSize\r | |
89 | );\r | |
90 | if (EFI_ERROR (Status)) {\r | |
91 | break;\r | |
92 | }\r | |
93 | \r | |
94 | if (Table->OemTableId == SIGNATURE_64 ('R', 'a', 'm', 'D', 'i', 's', 'k', ' ')) {\r | |
95 | Status = mAcpiTableProtocol->InstallAcpiTable (\r | |
96 | mAcpiTableProtocol,\r | |
97 | Table,\r | |
98 | TableSize,\r | |
99 | &mRamDiskSsdtTableKey\r | |
100 | );\r | |
101 | ASSERT_EFI_ERROR (Status);\r | |
102 | \r | |
103 | if (!EFI_ERROR (Status)) {\r | |
104 | mRamDiskSsdtTableKeyValid = TRUE;\r | |
105 | }\r | |
106 | \r | |
107 | FreePool (Table);\r | |
108 | return Status;\r | |
109 | } else {\r | |
110 | FreePool (Table);\r | |
111 | SectionInstance++;\r | |
112 | }\r | |
113 | }\r | |
114 | \r | |
115 | return Status;\r | |
116 | }\r | |
117 | \r | |
118 | \r | |
119 | /**\r | |
120 | Publish the RAM disk NVDIMM Firmware Interface Table (NFIT) to the ACPI\r | |
121 | table.\r | |
122 | \r | |
123 | @param[in] PrivateData Points to RAM disk private data.\r | |
124 | \r | |
125 | @retval EFI_SUCCESS The RAM disk NFIT has been published.\r | |
126 | @retval others The RAM disk NFIT has not been published.\r | |
127 | \r | |
128 | **/\r | |
129 | EFI_STATUS\r | |
130 | RamDiskPublishNfit (\r | |
131 | IN RAM_DISK_PRIVATE_DATA *PrivateData\r | |
132 | )\r | |
133 | {\r | |
134 | EFI_STATUS Status;\r | |
135 | EFI_MEMORY_DESCRIPTOR *MemoryMap;\r | |
136 | EFI_MEMORY_DESCRIPTOR *MemoryMapEntry;\r | |
137 | EFI_MEMORY_DESCRIPTOR *MemoryMapEnd;\r | |
138 | UINTN TableIndex;\r | |
139 | VOID *TableHeader;\r | |
140 | EFI_ACPI_TABLE_VERSION TableVersion;\r | |
141 | UINTN TableKey;\r | |
142 | EFI_ACPI_DESCRIPTION_HEADER *NfitHeader;\r | |
143 | EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE\r | |
144 | *SpaRange;\r | |
145 | VOID *Nfit;\r | |
146 | UINT32 NfitLen;\r | |
147 | UINTN MemoryMapSize;\r | |
148 | UINTN MapKey;\r | |
149 | UINTN DescriptorSize;\r | |
150 | UINT32 DescriptorVersion;\r | |
151 | UINT64 CurrentData;\r | |
152 | UINT8 Checksum;\r | |
153 | BOOLEAN MemoryFound;\r | |
154 | \r | |
155 | //\r | |
156 | // Get the EFI memory map.\r | |
157 | //\r | |
158 | MemoryMapSize = 0;\r | |
159 | MemoryMap = NULL;\r | |
160 | MemoryFound = FALSE;\r | |
161 | \r | |
162 | Status = gBS->GetMemoryMap (\r | |
163 | &MemoryMapSize,\r | |
164 | MemoryMap,\r | |
165 | &MapKey,\r | |
166 | &DescriptorSize,\r | |
167 | &DescriptorVersion\r | |
168 | );\r | |
169 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r | |
170 | do {\r | |
171 | MemoryMap = (EFI_MEMORY_DESCRIPTOR *) AllocatePool (MemoryMapSize);\r | |
172 | ASSERT (MemoryMap != NULL);\r | |
173 | Status = gBS->GetMemoryMap (\r | |
174 | &MemoryMapSize,\r | |
175 | MemoryMap,\r | |
176 | &MapKey,\r | |
177 | &DescriptorSize,\r | |
178 | &DescriptorVersion\r | |
179 | );\r | |
180 | if (EFI_ERROR (Status)) {\r | |
181 | FreePool (MemoryMap);\r | |
182 | }\r | |
183 | } while (Status == EFI_BUFFER_TOO_SMALL);\r | |
184 | ASSERT_EFI_ERROR (Status);\r | |
185 | \r | |
186 | MemoryMapEntry = MemoryMap;\r | |
187 | MemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) MemoryMap + MemoryMapSize);\r | |
188 | while ((UINTN) MemoryMapEntry < (UINTN) MemoryMapEnd) {\r | |
189 | if ((MemoryMapEntry->Type == EfiReservedMemoryType) &&\r | |
190 | (MemoryMapEntry->PhysicalStart <= PrivateData->StartingAddr) &&\r | |
191 | (MemoryMapEntry->PhysicalStart +\r | |
192 | MultU64x32 (MemoryMapEntry->NumberOfPages, EFI_PAGE_SIZE)\r | |
193 | >= PrivateData->StartingAddr + PrivateData->Size)) {\r | |
194 | MemoryFound = TRUE;\r | |
195 | DEBUG ((\r | |
196 | EFI_D_INFO,\r | |
197 | "RamDiskPublishNfit: RAM disk with reserved meomry type, will publish to NFIT.\n"\r | |
198 | ));\r | |
199 | break;\r | |
200 | }\r | |
201 | MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);\r | |
202 | }\r | |
203 | FreePool (MemoryMap);\r | |
204 | \r | |
205 | if (!MemoryFound) {\r | |
206 | return EFI_NOT_FOUND;\r | |
207 | }\r | |
208 | \r | |
209 | //\r | |
210 | // Determine whether there is a NFIT already in the ACPI table.\r | |
211 | //\r | |
212 | Status = EFI_SUCCESS;\r | |
213 | TableIndex = 0;\r | |
214 | TableKey = 0;\r | |
215 | TableHeader = NULL;\r | |
216 | \r | |
217 | while (!EFI_ERROR (Status)) {\r | |
218 | Status = mAcpiSdtProtocol->GetAcpiTable (\r | |
219 | TableIndex,\r | |
220 | (EFI_ACPI_SDT_HEADER **)&TableHeader,\r | |
221 | &TableVersion,\r | |
222 | &TableKey\r | |
223 | );\r | |
224 | if (!EFI_ERROR (Status)) {\r | |
225 | TableIndex++;\r | |
226 | \r | |
227 | if (((EFI_ACPI_SDT_HEADER *)TableHeader)->Signature ==\r | |
228 | EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_STRUCTURE_SIGNATURE) {\r | |
229 | break;\r | |
230 | }\r | |
231 | }\r | |
232 | }\r | |
233 | \r | |
234 | if (!EFI_ERROR (Status)) {\r | |
235 | //\r | |
236 | // A NFIT is already in the ACPI table.\r | |
237 | //\r | |
238 | DEBUG ((\r | |
239 | EFI_D_INFO,\r | |
240 | "RamDiskPublishNfit: A NFIT is already exist in the ACPI Table.\n"\r | |
241 | ));\r | |
242 | \r | |
243 | NfitHeader = (EFI_ACPI_DESCRIPTION_HEADER *)TableHeader;\r | |
244 | NfitLen = NfitHeader->Length + sizeof (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE);\r | |
245 | Nfit = AllocateZeroPool (NfitLen);\r | |
246 | if (Nfit == NULL) {\r | |
247 | return EFI_OUT_OF_RESOURCES;\r | |
248 | }\r | |
249 | CopyMem (Nfit, TableHeader, NfitHeader->Length);\r | |
250 | \r | |
251 | //\r | |
252 | // Update the NFIT head pointer.\r | |
253 | //\r | |
254 | NfitHeader = (EFI_ACPI_DESCRIPTION_HEADER *)Nfit;\r | |
255 | \r | |
256 | //\r | |
257 | // Uninstall the origin NFIT from the ACPI table.\r | |
258 | //\r | |
259 | Status = mAcpiTableProtocol->UninstallAcpiTable (\r | |
260 | mAcpiTableProtocol,\r | |
261 | TableKey\r | |
262 | );\r | |
263 | ASSERT_EFI_ERROR (Status);\r | |
264 | \r | |
265 | if (EFI_ERROR (Status)) {\r | |
266 | FreePool (Nfit);\r | |
267 | return Status;\r | |
268 | }\r | |
269 | \r | |
270 | //\r | |
271 | // Append the System Physical Address (SPA) Range Structure at the end\r | |
272 | // of the origin NFIT.\r | |
273 | //\r | |
274 | SpaRange = (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE *)\r | |
275 | ((UINT8 *)Nfit + NfitHeader->Length);\r | |
276 | \r | |
277 | //\r | |
278 | // Update the length field of the NFIT\r | |
279 | //\r | |
280 | NfitHeader->Length = NfitLen;\r | |
281 | \r | |
282 | //\r | |
283 | // The checksum will be updated after the new contents are appended.\r | |
284 | //\r | |
285 | NfitHeader->Checksum = 0;\r | |
286 | } else {\r | |
287 | //\r | |
288 | // Assumption is made that if no NFIT is in the ACPI table, there is no\r | |
289 | // NVDIMM root device in the \SB scope.\r | |
290 | // Therefore, a NVDIMM root device will be reported via Secondary System\r | |
291 | // Description Table (SSDT).\r | |
292 | //\r | |
293 | Status = RamDiskPublishSsdt ();\r | |
294 | if (EFI_ERROR (Status)) {\r | |
295 | return Status;\r | |
296 | }\r | |
297 | \r | |
298 | //\r | |
299 | // No NFIT is in the ACPI table, we will create one here.\r | |
300 | //\r | |
301 | DEBUG ((\r | |
302 | EFI_D_INFO,\r | |
303 | "RamDiskPublishNfit: No NFIT is in the ACPI Table, will create one.\n"\r | |
304 | ));\r | |
305 | \r | |
306 | NfitLen = sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE) +\r | |
307 | sizeof (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE);\r | |
308 | Nfit = AllocateZeroPool (NfitLen);\r | |
309 | if (Nfit == NULL) {\r | |
310 | return EFI_OUT_OF_RESOURCES;\r | |
311 | }\r | |
312 | \r | |
313 | SpaRange = (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE *)\r | |
314 | ((UINT8 *)Nfit + sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE));\r | |
315 | \r | |
316 | NfitHeader = (EFI_ACPI_DESCRIPTION_HEADER *)Nfit;\r | |
317 | NfitHeader->Signature = EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_STRUCTURE_SIGNATURE;\r | |
318 | NfitHeader->Length = NfitLen;\r | |
319 | NfitHeader->Revision = EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_REVISION;\r | |
320 | NfitHeader->Checksum = 0;\r | |
321 | NfitHeader->OemRevision = PcdGet32 (PcdAcpiDefaultOemRevision);\r | |
322 | NfitHeader->CreatorId = PcdGet32 (PcdAcpiDefaultCreatorId);\r | |
323 | NfitHeader->CreatorRevision = PcdGet32 (PcdAcpiDefaultCreatorRevision);\r | |
324 | CurrentData = PcdGet64 (PcdAcpiDefaultOemTableId);\r | |
325 | CopyMem (NfitHeader->OemId, PcdGetPtr (PcdAcpiDefaultOemId), sizeof (NfitHeader->OemId));\r | |
326 | CopyMem (&NfitHeader->OemTableId, &CurrentData, sizeof (UINT64));\r | |
327 | }\r | |
328 | \r | |
329 | //\r | |
330 | // Fill in the content of the SPA Range Structure.\r | |
331 | //\r | |
332 | SpaRange->Type = EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE_TYPE;\r | |
333 | SpaRange->Length = sizeof (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE);\r | |
334 | SpaRange->SystemPhysicalAddressRangeBase = PrivateData->StartingAddr;\r | |
335 | SpaRange->SystemPhysicalAddressRangeLength = PrivateData->Size;\r | |
336 | CopyGuid (&SpaRange->AddressRangeTypeGUID, &PrivateData->TypeGuid);\r | |
337 | \r | |
338 | Checksum = CalculateCheckSum8((UINT8 *)Nfit, NfitHeader->Length);\r | |
339 | NfitHeader->Checksum = Checksum;\r | |
340 | \r | |
341 | //\r | |
342 | // Publish the NFIT to the ACPI table.\r | |
343 | // Note, since the NFIT might be modified by other driver, therefore, we\r | |
344 | // do not track the returning TableKey from the InstallAcpiTable().\r | |
345 | //\r | |
346 | Status = mAcpiTableProtocol->InstallAcpiTable (\r | |
347 | mAcpiTableProtocol,\r | |
348 | Nfit,\r | |
349 | NfitHeader->Length,\r | |
350 | &TableKey\r | |
351 | );\r | |
352 | ASSERT_EFI_ERROR (Status);\r | |
353 | \r | |
354 | FreePool (Nfit);\r | |
355 | \r | |
356 | if (EFI_ERROR (Status)) {\r | |
357 | return Status;\r | |
358 | }\r | |
359 | \r | |
360 | PrivateData->InNfit = TRUE;\r | |
361 | \r | |
362 | return EFI_SUCCESS;\r | |
363 | }\r | |
364 | \r | |
365 | \r | |
366 | /**\r | |
367 | Unpublish the RAM disk NVDIMM Firmware Interface Table (NFIT) from the\r | |
368 | ACPI table.\r | |
369 | \r | |
370 | @param[in] PrivateData Points to RAM disk private data.\r | |
371 | \r | |
372 | @retval EFI_SUCCESS The RAM disk NFIT has been unpublished.\r | |
373 | @retval others The RAM disk NFIT has not been unpublished.\r | |
374 | \r | |
375 | **/\r | |
376 | EFI_STATUS\r | |
377 | RamDiskUnpublishNfit (\r | |
378 | IN RAM_DISK_PRIVATE_DATA *PrivateData\r | |
379 | )\r | |
380 | {\r | |
381 | EFI_STATUS Status;\r | |
382 | UINTN TableIndex;\r | |
383 | VOID *TableHeader;\r | |
384 | EFI_ACPI_TABLE_VERSION TableVersion;\r | |
385 | UINTN TableKey;\r | |
386 | EFI_ACPI_DESCRIPTION_HEADER *NewNfitHeader;\r | |
387 | EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE\r | |
388 | *SpaRange;\r | |
389 | VOID *NewNfit;\r | |
390 | VOID *NewNfitPtr;\r | |
391 | EFI_ACPI_6_1_NFIT_STRUCTURE_HEADER *NfitStructHeader;\r | |
392 | UINT32 NewNfitLen;\r | |
393 | UINT32 RemainLen;\r | |
394 | UINT8 Checksum;\r | |
395 | \r | |
396 | //\r | |
397 | // Find the NFIT in the ACPI table.\r | |
398 | //\r | |
399 | Status = EFI_SUCCESS;\r | |
400 | TableIndex = 0;\r | |
401 | TableKey = 0;\r | |
402 | TableHeader = NULL;\r | |
403 | \r | |
404 | while (!EFI_ERROR (Status)) {\r | |
405 | Status = mAcpiSdtProtocol->GetAcpiTable (\r | |
406 | TableIndex,\r | |
407 | (EFI_ACPI_SDT_HEADER **)&TableHeader,\r | |
408 | &TableVersion,\r | |
409 | &TableKey\r | |
410 | );\r | |
411 | if (!EFI_ERROR (Status)) {\r | |
412 | TableIndex++;\r | |
413 | \r | |
414 | if (((EFI_ACPI_SDT_HEADER *)TableHeader)->Signature ==\r | |
415 | EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE_STRUCTURE_SIGNATURE) {\r | |
416 | break;\r | |
417 | }\r | |
418 | }\r | |
419 | }\r | |
420 | \r | |
421 | if (EFI_ERROR (Status)) {\r | |
422 | //\r | |
423 | // No NFIT is found in the ACPI table.\r | |
424 | //\r | |
425 | return EFI_NOT_FOUND;\r | |
426 | }\r | |
427 | \r | |
428 | NewNfitLen = ((EFI_ACPI_DESCRIPTION_HEADER *)TableHeader)->Length -\r | |
429 | sizeof (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE);\r | |
430 | \r | |
431 | //\r | |
432 | // After removing this RAM disk from the NFIT, if no other structure is in\r | |
433 | // the NFIT, we just remove the NFIT and the SSDT which is used to report\r | |
434 | // the NVDIMM root device.\r | |
435 | //\r | |
436 | if (NewNfitLen == sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE)) {\r | |
437 | //\r | |
438 | // Remove the NFIT.\r | |
439 | //\r | |
440 | Status = mAcpiTableProtocol->UninstallAcpiTable (\r | |
441 | mAcpiTableProtocol,\r | |
442 | TableKey\r | |
443 | );\r | |
444 | ASSERT_EFI_ERROR (Status);\r | |
445 | if (EFI_ERROR (Status)) {\r | |
446 | return Status;\r | |
447 | }\r | |
448 | \r | |
449 | //\r | |
450 | // Remove the SSDT which is used by RamDiskDxe driver to report the NVDIMM\r | |
451 | // root device.\r | |
452 | // We do not care the return status since this SSDT might already be\r | |
453 | // uninstalled by other drivers to update the information of the NVDIMM\r | |
454 | // root device.\r | |
455 | //\r | |
456 | if (mRamDiskSsdtTableKeyValid) {\r | |
457 | mRamDiskSsdtTableKeyValid = FALSE;\r | |
458 | \r | |
459 | mAcpiTableProtocol->UninstallAcpiTable (\r | |
460 | mAcpiTableProtocol,\r | |
461 | mRamDiskSsdtTableKey\r | |
462 | );\r | |
463 | }\r | |
464 | \r | |
465 | return EFI_SUCCESS;\r | |
466 | }\r | |
467 | \r | |
468 | NewNfit = AllocateZeroPool (NewNfitLen);\r | |
469 | if (NewNfit == NULL) {\r | |
470 | return EFI_OUT_OF_RESOURCES;\r | |
471 | }\r | |
472 | \r | |
473 | //\r | |
474 | // Get a copy of the old NFIT header content.\r | |
475 | //\r | |
476 | CopyMem (NewNfit, TableHeader, sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE));\r | |
477 | NewNfitHeader = (EFI_ACPI_DESCRIPTION_HEADER *)NewNfit;\r | |
478 | NewNfitHeader->Length = NewNfitLen;\r | |
479 | NewNfitHeader->Checksum = 0;\r | |
480 | \r | |
481 | //\r | |
482 | // Copy the content of required NFIT structures.\r | |
483 | //\r | |
484 | NewNfitPtr = (UINT8 *)NewNfit + sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE);\r | |
485 | RemainLen = NewNfitLen - sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE);\r | |
486 | NfitStructHeader = (EFI_ACPI_6_1_NFIT_STRUCTURE_HEADER *)\r | |
487 | ((UINT8 *)TableHeader + sizeof (EFI_ACPI_6_1_NVDIMM_FIRMWARE_INTERFACE_TABLE));\r | |
488 | while (RemainLen > 0) {\r | |
489 | if ((NfitStructHeader->Type == EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE_TYPE) &&\r | |
490 | (NfitStructHeader->Length == sizeof (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE))) {\r | |
491 | SpaRange = (EFI_ACPI_6_1_NFIT_SYSTEM_PHYSICAL_ADDRESS_RANGE_STRUCTURE *)NfitStructHeader;\r | |
492 | \r | |
493 | if ((SpaRange->SystemPhysicalAddressRangeBase == PrivateData->StartingAddr) &&\r | |
494 | (SpaRange->SystemPhysicalAddressRangeLength == PrivateData->Size) &&\r | |
495 | (CompareGuid (&SpaRange->AddressRangeTypeGUID, &PrivateData->TypeGuid))) {\r | |
496 | //\r | |
497 | // Skip the SPA Range Structure for the RAM disk to be unpublished\r | |
498 | // from NFIT.\r | |
499 | //\r | |
500 | NfitStructHeader = (EFI_ACPI_6_1_NFIT_STRUCTURE_HEADER *)\r | |
501 | ((UINT8 *)NfitStructHeader + NfitStructHeader->Length);\r | |
502 | continue;\r | |
503 | }\r | |
504 | }\r | |
505 | \r | |
506 | //\r | |
507 | // Copy the content of origin NFIT.\r | |
508 | //\r | |
509 | CopyMem (NewNfitPtr, NfitStructHeader, NfitStructHeader->Length);\r | |
510 | NewNfitPtr = (UINT8 *)NewNfitPtr + NfitStructHeader->Length;\r | |
511 | \r | |
512 | //\r | |
513 | // Move to the header of next NFIT structure.\r | |
514 | //\r | |
515 | RemainLen -= NfitStructHeader->Length;\r | |
516 | NfitStructHeader = (EFI_ACPI_6_1_NFIT_STRUCTURE_HEADER *)\r | |
517 | ((UINT8 *)NfitStructHeader + NfitStructHeader->Length);\r | |
518 | }\r | |
519 | \r | |
520 | Checksum = CalculateCheckSum8((UINT8 *)NewNfit, NewNfitHeader->Length);\r | |
521 | NewNfitHeader->Checksum = Checksum;\r | |
522 | \r | |
523 | Status = mAcpiTableProtocol->UninstallAcpiTable (\r | |
524 | mAcpiTableProtocol,\r | |
525 | TableKey\r | |
526 | );\r | |
527 | ASSERT_EFI_ERROR (Status);\r | |
528 | \r | |
529 | if (EFI_ERROR (Status)) {\r | |
530 | FreePool (NewNfit);\r | |
531 | return Status;\r | |
532 | }\r | |
533 | \r | |
534 | //\r | |
535 | // Publish the NFIT to the ACPI table.\r | |
536 | // Note, since the NFIT might be modified by other driver, therefore, we\r | |
537 | // do not track the returning TableKey from the InstallAcpiTable().\r | |
538 | //\r | |
539 | Status = mAcpiTableProtocol->InstallAcpiTable (\r | |
540 | mAcpiTableProtocol,\r | |
541 | NewNfit,\r | |
542 | NewNfitLen,\r | |
543 | &TableKey\r | |
544 | );\r | |
545 | ASSERT_EFI_ERROR (Status);\r | |
546 | \r | |
547 | FreePool (NewNfit);\r | |
548 | if (EFI_ERROR (Status)) {\r | |
549 | return Status;\r | |
550 | }\r | |
551 | \r | |
552 | return EFI_SUCCESS;\r | |
553 | }\r | |
554 | \r | |
555 | \r | |
556 | /**\r | |
557 | Register a RAM disk with specified address, size and type.\r | |
558 | \r | |
559 | @param[in] RamDiskBase The base address of registered RAM disk.\r | |
560 | @param[in] RamDiskSize The size of registered RAM disk.\r | |
561 | @param[in] RamDiskType The type of registered RAM disk. The GUID can be\r | |
562 | any of the values defined in section 9.3.6.9, or a\r | |
563 | vendor defined GUID.\r | |
564 | @param[in] ParentDevicePath\r | |
565 | Pointer to the parent device path. If there is no\r | |
566 | parent device path then ParentDevicePath is NULL.\r | |
567 | @param[out] DevicePath On return, points to a pointer to the device path\r | |
568 | of the RAM disk device.\r | |
569 | If ParentDevicePath is not NULL, the returned\r | |
570 | DevicePath is created by appending a RAM disk node\r | |
571 | to the parent device path. If ParentDevicePath is\r | |
572 | NULL, the returned DevicePath is a RAM disk device\r | |
573 | path without appending. This function is\r | |
574 | responsible for allocating the buffer DevicePath\r | |
575 | with the boot service AllocatePool().\r | |
576 | \r | |
577 | @retval EFI_SUCCESS The RAM disk is registered successfully.\r | |
578 | @retval EFI_INVALID_PARAMETER DevicePath or RamDiskType is NULL.\r | |
579 | RamDiskSize is 0.\r | |
580 | @retval EFI_ALREADY_STARTED A Device Path Protocol instance to be created\r | |
581 | is already present in the handle database.\r | |
582 | @retval EFI_OUT_OF_RESOURCES The RAM disk register operation fails due to\r | |
583 | resource limitation.\r | |
584 | \r | |
585 | **/\r | |
586 | EFI_STATUS\r | |
587 | EFIAPI\r | |
588 | RamDiskRegister (\r | |
589 | IN UINT64 RamDiskBase,\r | |
590 | IN UINT64 RamDiskSize,\r | |
591 | IN EFI_GUID *RamDiskType,\r | |
592 | IN EFI_DEVICE_PATH *ParentDevicePath OPTIONAL,\r | |
593 | OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r | |
594 | )\r | |
595 | {\r | |
596 | EFI_STATUS Status;\r | |
597 | RAM_DISK_PRIVATE_DATA *PrivateData;\r | |
598 | RAM_DISK_PRIVATE_DATA *RegisteredPrivateData;\r | |
599 | MEDIA_RAM_DISK_DEVICE_PATH *RamDiskDevNode;\r | |
600 | UINTN DevicePathSize;\r | |
601 | LIST_ENTRY *Entry;\r | |
602 | \r | |
603 | if ((0 == RamDiskSize) || (NULL == RamDiskType) || (NULL == DevicePath)) {\r | |
604 | return EFI_INVALID_PARAMETER;\r | |
605 | }\r | |
606 | \r | |
607 | //\r | |
608 | // Add check to prevent data read across the memory boundary\r | |
609 | //\r | |
610 | if ((RamDiskSize > MAX_UINTN) ||\r | |
611 | (RamDiskBase > MAX_UINTN - RamDiskSize + 1)) {\r | |
612 | return EFI_INVALID_PARAMETER;\r | |
613 | }\r | |
614 | \r | |
615 | RamDiskDevNode = NULL;\r | |
616 | \r | |
617 | //\r | |
618 | // Create a new RAM disk instance and initialize its private data\r | |
619 | //\r | |
620 | PrivateData = AllocateCopyPool (\r | |
621 | sizeof (RAM_DISK_PRIVATE_DATA),\r | |
622 | &mRamDiskPrivateDataTemplate\r | |
623 | );\r | |
624 | if (NULL == PrivateData) {\r | |
625 | return EFI_OUT_OF_RESOURCES;\r | |
626 | }\r | |
627 | \r | |
628 | PrivateData->StartingAddr = RamDiskBase;\r | |
629 | PrivateData->Size = RamDiskSize;\r | |
630 | CopyGuid (&PrivateData->TypeGuid, RamDiskType);\r | |
631 | InitializeListHead (&PrivateData->ThisInstance);\r | |
632 | \r | |
633 | //\r | |
634 | // Generate device path information for the registered RAM disk\r | |
635 | //\r | |
636 | RamDiskDevNode = AllocateCopyPool (\r | |
637 | sizeof (MEDIA_RAM_DISK_DEVICE_PATH),\r | |
638 | &mRamDiskDeviceNodeTemplate\r | |
639 | );\r | |
640 | if (NULL == RamDiskDevNode) {\r | |
641 | Status = EFI_OUT_OF_RESOURCES;\r | |
642 | goto ErrorExit;\r | |
643 | }\r | |
644 | \r | |
645 | RamDiskInitDeviceNode (PrivateData, RamDiskDevNode);\r | |
646 | \r | |
647 | *DevicePath = AppendDevicePathNode (\r | |
648 | ParentDevicePath,\r | |
649 | (EFI_DEVICE_PATH_PROTOCOL *) RamDiskDevNode\r | |
650 | );\r | |
651 | if (NULL == *DevicePath) {\r | |
652 | Status = EFI_OUT_OF_RESOURCES;\r | |
653 | goto ErrorExit;\r | |
654 | }\r | |
655 | \r | |
656 | PrivateData->DevicePath = *DevicePath;\r | |
657 | \r | |
658 | //\r | |
659 | // Check whether the created device path is already present in the handle\r | |
660 | // database\r | |
661 | //\r | |
662 | if (!IsListEmpty(&RegisteredRamDisks)) {\r | |
663 | DevicePathSize = GetDevicePathSize (PrivateData->DevicePath);\r | |
664 | \r | |
665 | EFI_LIST_FOR_EACH (Entry, &RegisteredRamDisks) {\r | |
666 | RegisteredPrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);\r | |
667 | if (DevicePathSize == GetDevicePathSize (RegisteredPrivateData->DevicePath)) {\r | |
668 | //\r | |
669 | // Compare device path\r | |
670 | //\r | |
671 | if ((CompareMem (\r | |
672 | PrivateData->DevicePath,\r | |
673 | RegisteredPrivateData->DevicePath,\r | |
674 | DevicePathSize)) == 0) {\r | |
675 | *DevicePath = NULL;\r | |
676 | Status = EFI_ALREADY_STARTED;\r | |
677 | goto ErrorExit;\r | |
678 | }\r | |
679 | }\r | |
680 | }\r | |
681 | }\r | |
682 | \r | |
683 | //\r | |
684 | // Fill Block IO protocol informations for the RAM disk\r | |
685 | //\r | |
686 | RamDiskInitBlockIo (PrivateData);\r | |
687 | \r | |
688 | //\r | |
689 | // Install EFI_DEVICE_PATH_PROTOCOL & EFI_BLOCK_IO(2)_PROTOCOL on a new\r | |
690 | // handle\r | |
691 | //\r | |
692 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
693 | &PrivateData->Handle,\r | |
694 | &gEfiBlockIoProtocolGuid,\r | |
695 | &PrivateData->BlockIo,\r | |
696 | &gEfiBlockIo2ProtocolGuid,\r | |
697 | &PrivateData->BlockIo2,\r | |
698 | &gEfiDevicePathProtocolGuid,\r | |
699 | PrivateData->DevicePath,\r | |
700 | NULL\r | |
701 | );\r | |
702 | if (EFI_ERROR (Status)) {\r | |
703 | goto ErrorExit;\r | |
704 | }\r | |
705 | \r | |
706 | //\r | |
707 | // Insert the newly created one to the registered RAM disk list\r | |
708 | //\r | |
709 | InsertTailList (&RegisteredRamDisks, &PrivateData->ThisInstance);\r | |
710 | \r | |
711 | gBS->ConnectController (PrivateData->Handle, NULL, NULL, TRUE);\r | |
712 | \r | |
713 | FreePool (RamDiskDevNode);\r | |
714 | \r | |
715 | if ((mAcpiTableProtocol != NULL) && (mAcpiSdtProtocol != NULL)) {\r | |
716 | RamDiskPublishNfit (PrivateData);\r | |
717 | }\r | |
718 | \r | |
719 | return EFI_SUCCESS;\r | |
720 | \r | |
721 | ErrorExit:\r | |
722 | if (RamDiskDevNode != NULL) {\r | |
723 | FreePool (RamDiskDevNode);\r | |
724 | }\r | |
725 | \r | |
726 | if (PrivateData != NULL) {\r | |
727 | if (PrivateData->DevicePath) {\r | |
728 | FreePool (PrivateData->DevicePath);\r | |
729 | }\r | |
730 | \r | |
731 | FreePool (PrivateData);\r | |
732 | }\r | |
733 | \r | |
734 | return Status;\r | |
735 | }\r | |
736 | \r | |
737 | \r | |
738 | /**\r | |
739 | Unregister a RAM disk specified by DevicePath.\r | |
740 | \r | |
741 | @param[in] DevicePath A pointer to the device path that describes a RAM\r | |
742 | Disk device.\r | |
743 | \r | |
744 | @retval EFI_SUCCESS The RAM disk is unregistered successfully.\r | |
745 | @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r | |
746 | @retval EFI_UNSUPPORTED The device specified by DevicePath is not a\r | |
747 | valid ramdisk device path and not supported\r | |
748 | by the driver.\r | |
749 | @retval EFI_NOT_FOUND The RAM disk pointed by DevicePath doesn't\r | |
750 | exist.\r | |
751 | \r | |
752 | **/\r | |
753 | EFI_STATUS\r | |
754 | EFIAPI\r | |
755 | RamDiskUnregister (\r | |
756 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
757 | )\r | |
758 | {\r | |
759 | LIST_ENTRY *Entry;\r | |
760 | LIST_ENTRY *NextEntry;\r | |
761 | BOOLEAN Found;\r | |
762 | UINT64 StartingAddr;\r | |
763 | UINT64 EndingAddr;\r | |
764 | EFI_DEVICE_PATH_PROTOCOL *Header;\r | |
765 | MEDIA_RAM_DISK_DEVICE_PATH *RamDiskDevNode;\r | |
766 | RAM_DISK_PRIVATE_DATA *PrivateData;\r | |
767 | \r | |
768 | if (NULL == DevicePath) {\r | |
769 | return EFI_INVALID_PARAMETER;\r | |
770 | }\r | |
771 | \r | |
772 | //\r | |
773 | // Locate the RAM disk device node.\r | |
774 | //\r | |
775 | RamDiskDevNode = NULL;\r | |
776 | Header = DevicePath;\r | |
777 | do {\r | |
778 | //\r | |
779 | // Test if the current device node is a RAM disk.\r | |
780 | //\r | |
781 | if ((MEDIA_DEVICE_PATH == Header->Type) &&\r | |
782 | (MEDIA_RAM_DISK_DP == Header->SubType)) {\r | |
783 | RamDiskDevNode = (MEDIA_RAM_DISK_DEVICE_PATH *) Header;\r | |
784 | \r | |
785 | break;\r | |
786 | }\r | |
787 | \r | |
788 | Header = NextDevicePathNode (Header);\r | |
789 | } while ((Header->Type != END_DEVICE_PATH_TYPE));\r | |
790 | \r | |
791 | if (NULL == RamDiskDevNode) {\r | |
792 | return EFI_UNSUPPORTED;\r | |
793 | }\r | |
794 | \r | |
795 | Found = FALSE;\r | |
796 | StartingAddr = ReadUnaligned64 ((UINT64 *) &(RamDiskDevNode->StartingAddr[0]));\r | |
797 | EndingAddr = ReadUnaligned64 ((UINT64 *) &(RamDiskDevNode->EndingAddr[0]));\r | |
798 | \r | |
799 | if (!IsListEmpty(&RegisteredRamDisks)) {\r | |
800 | EFI_LIST_FOR_EACH_SAFE (Entry, NextEntry, &RegisteredRamDisks) {\r | |
801 | PrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);\r | |
802 | \r | |
803 | //\r | |
804 | // Unregister the RAM disk given by its starting address, ending address\r | |
805 | // and type guid.\r | |
806 | //\r | |
807 | if ((StartingAddr == PrivateData->StartingAddr) &&\r | |
808 | (EndingAddr == PrivateData->StartingAddr + PrivateData->Size - 1) &&\r | |
809 | (CompareGuid (&RamDiskDevNode->TypeGuid, &PrivateData->TypeGuid))) {\r | |
810 | //\r | |
811 | // Remove the content for this RAM disk in NFIT.\r | |
812 | //\r | |
813 | if (PrivateData->InNfit) {\r | |
814 | RamDiskUnpublishNfit (PrivateData);\r | |
815 | }\r | |
816 | \r | |
817 | //\r | |
818 | // Uninstall the EFI_DEVICE_PATH_PROTOCOL & EFI_BLOCK_IO(2)_PROTOCOL\r | |
819 | //\r | |
820 | gBS->UninstallMultipleProtocolInterfaces (\r | |
821 | PrivateData->Handle,\r | |
822 | &gEfiBlockIoProtocolGuid,\r | |
823 | &PrivateData->BlockIo,\r | |
824 | &gEfiBlockIo2ProtocolGuid,\r | |
825 | &PrivateData->BlockIo2,\r | |
826 | &gEfiDevicePathProtocolGuid,\r | |
827 | (EFI_DEVICE_PATH_PROTOCOL *) PrivateData->DevicePath,\r | |
828 | NULL\r | |
829 | );\r | |
830 | \r | |
831 | RemoveEntryList (&PrivateData->ThisInstance);\r | |
832 | \r | |
833 | if (RamDiskCreateHii == PrivateData->CreateMethod) {\r | |
834 | //\r | |
835 | // If a RAM disk is created within HII, then the RamDiskDxe driver\r | |
836 | // driver is responsible for freeing the allocated memory for the\r | |
837 | // RAM disk.\r | |
838 | //\r | |
839 | FreePool ((VOID *)(UINTN) PrivateData->StartingAddr);\r | |
840 | }\r | |
841 | \r | |
842 | FreePool (PrivateData->DevicePath);\r | |
843 | FreePool (PrivateData);\r | |
844 | Found = TRUE;\r | |
845 | \r | |
846 | break;\r | |
847 | }\r | |
848 | }\r | |
849 | }\r | |
850 | \r | |
851 | if (TRUE == Found) {\r | |
852 | return EFI_SUCCESS;\r | |
853 | } else {\r | |
854 | return EFI_NOT_FOUND;\r | |
855 | }\r | |
856 | }\r |