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bcab901b PG |
1 | /** @file\r |
2 | AML Node Interface.\r | |
3 | \r | |
4 | Copyright (c) 2019 - 2020, Arm Limited. All rights reserved.<BR>\r | |
5 | \r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
7 | **/\r | |
8 | \r | |
9 | #include <AmlNodeDefines.h>\r | |
10 | \r | |
11 | #include <AmlCoreInterface.h>\r | |
12 | #include <ResourceData/AmlResourceData.h>\r | |
13 | #include <String/AmlString.h>\r | |
14 | #include <Tree/AmlNode.h>\r | |
15 | #include <Tree/AmlTree.h>\r | |
16 | #include <Utils/AmlUtility.h>\r | |
17 | \r | |
18 | /** Returns the tree node type (Root/Object/Data).\r | |
19 | \r | |
20 | @param [in] Node Pointer to a Node.\r | |
21 | \r | |
22 | @return The node type.\r | |
23 | EAmlNodeUnknown if invalid parameter.\r | |
24 | **/\r | |
25 | EAML_NODE_TYPE\r | |
26 | EFIAPI\r | |
27 | AmlGetNodeType (\r | |
28 | IN AML_NODE_HEADER * Node\r | |
29 | )\r | |
30 | {\r | |
31 | if (!IS_AML_NODE_VALID (Node)) {\r | |
32 | ASSERT (0);\r | |
33 | return EAmlNodeUnknown;\r | |
34 | }\r | |
35 | \r | |
36 | return Node->NodeType;\r | |
37 | }\r | |
38 | \r | |
39 | /** Get the RootNode information.\r | |
40 | The Node must be a root node.\r | |
41 | \r | |
42 | @param [in] RootNode Pointer to a root node.\r | |
43 | @param [out] SdtHeaderBuffer Buffer to copy the ACPI DSDT/SSDT header to.\r | |
44 | \r | |
45 | @retval EFI_SUCCESS The function completed successfully.\r | |
46 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
47 | **/\r | |
48 | EFI_STATUS\r | |
49 | EFIAPI\r | |
50 | AmlGetRootNodeInfo (\r | |
51 | IN AML_ROOT_NODE * RootNode,\r | |
52 | OUT EFI_ACPI_DESCRIPTION_HEADER * SdtHeaderBuffer\r | |
53 | )\r | |
54 | {\r | |
55 | if (!IS_AML_ROOT_NODE (RootNode) ||\r | |
56 | (SdtHeaderBuffer == NULL)) {\r | |
57 | ASSERT (0);\r | |
58 | return EFI_INVALID_PARAMETER;\r | |
59 | }\r | |
60 | \r | |
61 | CopyMem (\r | |
62 | SdtHeaderBuffer,\r | |
63 | RootNode->SdtHeader,\r | |
64 | sizeof (EFI_ACPI_DESCRIPTION_HEADER)\r | |
65 | );\r | |
66 | \r | |
67 | return EFI_SUCCESS;\r | |
68 | }\r | |
69 | \r | |
70 | /** Get the ObjectNode information.\r | |
71 | The Node must be an object node.\r | |
72 | \r | |
73 | @ingroup NodeInterfaceApi\r | |
74 | \r | |
75 | @param [in] ObjectNode Pointer to an object node.\r | |
76 | @param [out] OpCode Pointer holding the OpCode.\r | |
77 | Optional, can be NULL.\r | |
78 | @param [out] SubOpCode Pointer holding the SubOpCode.\r | |
79 | Optional, can be NULL.\r | |
80 | @param [out] PkgLen Pointer holding the PkgLen.\r | |
81 | The PkgLen is 0 for nodes\r | |
82 | not having the Pkglen attribute.\r | |
83 | Optional, can be NULL.\r | |
84 | @param [out] IsNameSpaceNode Pointer holding TRUE if the node is defining\r | |
85 | or changing the NameSpace scope.\r | |
86 | E.g.: The "Name ()" and "Scope ()" ASL\r | |
87 | statements add/modify the NameSpace scope.\r | |
88 | Their corresponding node are NameSpace nodes.\r | |
89 | Optional, can be NULL.\r | |
90 | \r | |
91 | @retval EFI_SUCCESS The function completed successfully.\r | |
92 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
93 | **/\r | |
94 | EFI_STATUS\r | |
95 | EFIAPI\r | |
96 | AmlGetObjectNodeInfo (\r | |
97 | IN AML_OBJECT_NODE * ObjectNode,\r | |
fe2d8189 MK |
98 | OUT UINT8 * OpCode OPTIONAL,\r |
99 | OUT UINT8 * SubOpCode OPTIONAL,\r | |
100 | OUT UINT32 * PkgLen OPTIONAL,\r | |
bcab901b PG |
101 | OUT BOOLEAN * IsNameSpaceNode OPTIONAL\r |
102 | )\r | |
103 | {\r | |
104 | if (!IS_AML_OBJECT_NODE (ObjectNode)) {\r | |
105 | ASSERT (0);\r | |
106 | return EFI_INVALID_PARAMETER;\r | |
107 | }\r | |
108 | \r | |
109 | if (OpCode != NULL) {\r | |
110 | *OpCode = ObjectNode->AmlByteEncoding->OpCode;\r | |
111 | }\r | |
112 | if (SubOpCode != NULL) {\r | |
113 | *SubOpCode = ObjectNode->AmlByteEncoding->SubOpCode;\r | |
114 | }\r | |
115 | if (PkgLen != NULL) {\r | |
116 | *PkgLen = ObjectNode->PkgLen;\r | |
117 | }\r | |
118 | if (IsNameSpaceNode != NULL) {\r | |
119 | *IsNameSpaceNode = AmlNodeHasAttribute (ObjectNode, AML_IN_NAMESPACE);\r | |
120 | }\r | |
121 | \r | |
122 | return EFI_SUCCESS;\r | |
123 | }\r | |
124 | \r | |
125 | /** Returns the count of the fixed arguments for the input Node.\r | |
126 | \r | |
127 | @param [in] Node Pointer to an object node.\r | |
128 | \r | |
129 | @return Number of fixed arguments of the object node.\r | |
130 | Return 0 if the node is not an object node.\r | |
131 | **/\r | |
132 | UINT8\r | |
133 | AmlGetFixedArgumentCount (\r | |
134 | IN AML_OBJECT_NODE * Node\r | |
135 | )\r | |
136 | {\r | |
137 | if (IS_AML_OBJECT_NODE (Node) &&\r | |
138 | (Node->AmlByteEncoding != NULL)) {\r | |
139 | return (UINT8)Node->AmlByteEncoding->MaxIndex;\r | |
140 | }\r | |
141 | \r | |
142 | return 0;\r | |
143 | }\r | |
144 | \r | |
145 | /** Get the data type of the DataNode.\r | |
146 | The Node must be a data node.\r | |
147 | \r | |
148 | @param [in] DataNode Pointer to a data node.\r | |
149 | @param [out] DataType Pointer holding the data type of the data buffer.\r | |
150 | \r | |
151 | @retval EFI_SUCCESS The function completed successfully.\r | |
152 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
153 | **/\r | |
154 | EFI_STATUS\r | |
155 | EFIAPI\r | |
156 | AmlGetNodeDataType (\r | |
157 | IN AML_DATA_NODE * DataNode,\r | |
158 | OUT EAML_NODE_DATA_TYPE * DataType\r | |
159 | )\r | |
160 | {\r | |
161 | if (!IS_AML_DATA_NODE (DataNode) ||\r | |
162 | (DataType == NULL)) {\r | |
163 | ASSERT (0);\r | |
164 | return EFI_INVALID_PARAMETER;\r | |
165 | }\r | |
166 | \r | |
167 | *DataType = DataNode->DataType;\r | |
168 | \r | |
169 | return EFI_SUCCESS;\r | |
170 | }\r | |
171 | \r | |
172 | /** Get the descriptor Id of the resource data element\r | |
173 | contained in the DataNode.\r | |
174 | \r | |
175 | The Node must be a data node.\r | |
176 | The Node must have the resource data type, i.e. have the\r | |
177 | EAmlNodeDataTypeResourceData data type.\r | |
178 | \r | |
179 | @param [in] DataNode Pointer to a data node containing a\r | |
180 | resource data element.\r | |
181 | @param [out] ResourceDataType Pointer holding the descriptor Id of\r | |
182 | the resource data.\r | |
183 | \r | |
184 | @retval EFI_SUCCESS The function completed successfully.\r | |
185 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
186 | **/\r | |
187 | EFI_STATUS\r | |
188 | EFIAPI\r | |
189 | AmlGetResourceDataType (\r | |
190 | IN AML_DATA_NODE * DataNode,\r | |
191 | OUT AML_RD_HEADER * ResourceDataType\r | |
192 | )\r | |
193 | {\r | |
194 | if (!IS_AML_DATA_NODE (DataNode) ||\r | |
195 | (ResourceDataType == NULL) ||\r | |
196 | (DataNode->DataType != EAmlNodeDataTypeResourceData)) {\r | |
197 | ASSERT (0);\r | |
198 | return EFI_INVALID_PARAMETER;\r | |
199 | }\r | |
200 | \r | |
201 | *ResourceDataType = AmlRdGetDescId (DataNode->Buffer);\r | |
202 | \r | |
203 | return EFI_SUCCESS;\r | |
204 | }\r | |
205 | \r | |
206 | /** Get the data buffer and size of the DataNode.\r | |
207 | The Node must be a data node.\r | |
208 | \r | |
209 | BufferSize is always updated to the size of buffer of the DataNode.\r | |
210 | \r | |
211 | If:\r | |
212 | - the content of BufferSize is >= to the DataNode's buffer size;\r | |
213 | - Buffer is not NULL;\r | |
214 | then copy the content of the DataNode's buffer in Buffer.\r | |
215 | \r | |
216 | @param [in] DataNode Pointer to a data node.\r | |
217 | @param [out] Buffer Buffer to write the data to.\r | |
218 | Optional, if NULL, only update BufferSize.\r | |
219 | @param [in, out] BufferSize Pointer holding:\r | |
220 | - At entry, the size of the Buffer;\r | |
221 | - At exit, the size of the DataNode's\r | |
222 | buffer size.\r | |
223 | \r | |
224 | @retval EFI_SUCCESS The function completed successfully.\r | |
225 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
226 | **/\r | |
227 | EFI_STATUS\r | |
228 | EFIAPI\r | |
229 | AmlGetDataNodeBuffer (\r | |
230 | IN AML_DATA_NODE * DataNode,\r | |
fe2d8189 | 231 | OUT UINT8 * Buffer OPTIONAL,\r |
bcab901b PG |
232 | IN OUT UINT32 * BufferSize\r |
233 | )\r | |
234 | {\r | |
235 | if (!IS_AML_DATA_NODE (DataNode) ||\r | |
236 | (BufferSize == NULL)) {\r | |
237 | ASSERT (0);\r | |
238 | return EFI_INVALID_PARAMETER;\r | |
239 | }\r | |
240 | \r | |
241 | if ((*BufferSize >= DataNode->Size) &&\r | |
242 | (Buffer != NULL)) {\r | |
243 | CopyMem (Buffer, DataNode->Buffer, DataNode->Size);\r | |
244 | }\r | |
245 | \r | |
246 | *BufferSize = DataNode->Size;\r | |
247 | \r | |
248 | return EFI_SUCCESS;\r | |
249 | }\r | |
250 | \r | |
251 | /** Update the ACPI DSDT/SSDT table header.\r | |
252 | \r | |
253 | The input SdtHeader information is copied to the tree RootNode.\r | |
254 | The table Length field is automatically updated.\r | |
255 | The checksum field is only updated when serializing the tree.\r | |
256 | \r | |
257 | @param [in] RootNode Pointer to a root node.\r | |
258 | @param [in] SdtHeader Pointer to an ACPI DSDT/SSDT table header.\r | |
259 | \r | |
260 | @retval EFI_SUCCESS The function completed successfully.\r | |
261 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
262 | **/\r | |
263 | EFI_STATUS\r | |
264 | EFIAPI\r | |
265 | AmlUpdateRootNode (\r | |
266 | IN AML_ROOT_NODE * RootNode,\r | |
267 | IN CONST EFI_ACPI_DESCRIPTION_HEADER * SdtHeader\r | |
268 | )\r | |
269 | {\r | |
270 | EFI_STATUS Status;\r | |
271 | UINT32 Length;\r | |
272 | \r | |
273 | if (!IS_AML_ROOT_NODE (RootNode) ||\r | |
274 | (SdtHeader == NULL) ||\r | |
275 | ((SdtHeader->Signature !=\r | |
276 | EFI_ACPI_6_3_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) &&\r | |
277 | (SdtHeader->Signature !=\r | |
278 | EFI_ACPI_6_3_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE))) {\r | |
279 | ASSERT (0);\r | |
280 | return EFI_INVALID_PARAMETER;\r | |
281 | }\r | |
282 | \r | |
283 | CopyMem (\r | |
284 | RootNode->SdtHeader,\r | |
285 | SdtHeader,\r | |
286 | sizeof (EFI_ACPI_DESCRIPTION_HEADER)\r | |
287 | );\r | |
288 | \r | |
289 | // Update the Length field.\r | |
290 | Status = AmlComputeSize ((AML_NODE_HEADER*)RootNode, &Length);\r | |
291 | if (EFI_ERROR (Status)) {\r | |
292 | ASSERT (0);\r | |
293 | return Status;\r | |
294 | }\r | |
295 | \r | |
296 | RootNode->SdtHeader->Length = Length +\r | |
297 | (UINT32)sizeof (EFI_ACPI_DESCRIPTION_HEADER);\r | |
298 | \r | |
299 | return Status;\r | |
300 | }\r | |
301 | \r | |
302 | /** Update an object node representing an integer with a new value.\r | |
303 | \r | |
304 | The object node must have one of the following OpCodes:\r | |
305 | - AML_BYTE_PREFIX\r | |
306 | - AML_WORD_PREFIX\r | |
307 | - AML_DWORD_PREFIX\r | |
308 | - AML_QWORD_PREFIX\r | |
309 | - AML_ZERO_OP\r | |
310 | - AML_ONE_OP\r | |
311 | \r | |
312 | The following OpCode is not supported:\r | |
313 | - AML_ONES_OP\r | |
314 | \r | |
315 | @param [in] IntegerOpNode Pointer an object node containing an integer.\r | |
316 | Must not be an object node with an AML_ONES_OP\r | |
317 | OpCode.\r | |
318 | @param [in] NewInteger New integer value to set.\r | |
319 | \r | |
320 | @retval EFI_SUCCESS The function completed successfully.\r | |
321 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
322 | **/\r | |
323 | EFI_STATUS\r | |
324 | EFIAPI\r | |
325 | AmlUpdateInteger (\r | |
326 | IN AML_OBJECT_NODE * IntegerOpNode,\r | |
327 | IN UINT64 NewInteger\r | |
328 | )\r | |
329 | {\r | |
330 | EFI_STATUS Status;\r | |
331 | \r | |
332 | INT8 ValueWidthDiff;\r | |
333 | \r | |
334 | if (!IS_AML_OBJECT_NODE (IntegerOpNode) ||\r | |
335 | (!IsIntegerNode (IntegerOpNode) &&\r | |
336 | !IsSpecialIntegerNode (IntegerOpNode)) ||\r | |
337 | AmlNodeCompareOpCode (IntegerOpNode, AML_ONES_OP, 0)) {\r | |
338 | ASSERT (0);\r | |
339 | return EFI_INVALID_PARAMETER;\r | |
340 | }\r | |
341 | \r | |
342 | Status = AmlNodeSetIntegerValue (IntegerOpNode, NewInteger, &ValueWidthDiff);\r | |
343 | if (EFI_ERROR (Status)) {\r | |
344 | ASSERT (0);\r | |
345 | return Status;\r | |
346 | }\r | |
347 | \r | |
348 | // If the new size is different from the old size, propagate the new size.\r | |
349 | if (ValueWidthDiff != 0) {\r | |
350 | // Propagate the information.\r | |
351 | Status = AmlPropagateInformation (\r | |
352 | (AML_NODE_HEADER*)IntegerOpNode,\r | |
353 | (ValueWidthDiff > 0) ? TRUE : FALSE,\r | |
354 | ABS (ValueWidthDiff),\r | |
355 | 0\r | |
356 | );\r | |
357 | if (EFI_ERROR (Status)) {\r | |
358 | ASSERT (0);\r | |
359 | }\r | |
360 | }\r | |
361 | \r | |
362 | return Status;\r | |
363 | }\r | |
364 | \r | |
365 | /** Update the buffer of a data node.\r | |
366 | \r | |
367 | Note: The data type of the buffer's content must match the data type of the\r | |
368 | DataNode. This is a hard restriction to prevent undesired behaviour.\r | |
369 | \r | |
370 | @param [in] DataNode Pointer to a data node.\r | |
371 | @param [in] DataType Data type of the Buffer's content.\r | |
372 | @param [in] Buffer Buffer containing the new data. The content of\r | |
373 | the Buffer is copied.\r | |
374 | @param [in] Size Size of the Buffer.\r | |
375 | \r | |
376 | @retval EFI_SUCCESS The function completed successfully.\r | |
377 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
378 | @retval EFI_UNSUPPORTED Operation not supporter.\r | |
379 | **/\r | |
380 | EFI_STATUS\r | |
381 | EFIAPI\r | |
382 | AmlUpdateDataNode (\r | |
383 | IN AML_DATA_NODE * DataNode,\r | |
384 | IN EAML_NODE_DATA_TYPE DataType,\r | |
385 | IN UINT8 * Buffer,\r | |
386 | IN UINT32 Size\r | |
387 | )\r | |
388 | {\r | |
389 | EFI_STATUS Status;\r | |
390 | \r | |
391 | UINT32 ExpectedSize;\r | |
392 | AML_OBJECT_NODE * ParentNode;\r | |
393 | EAML_NODE_DATA_TYPE ExpectedArgType;\r | |
394 | EAML_PARSE_INDEX Index;\r | |
395 | \r | |
396 | if (!IS_AML_DATA_NODE (DataNode) ||\r | |
397 | (DataType > EAmlNodeDataTypeMax) ||\r | |
398 | (Buffer == NULL) ||\r | |
399 | (Size == 0)) {\r | |
400 | ASSERT (0);\r | |
401 | return EFI_INVALID_PARAMETER;\r | |
402 | }\r | |
403 | \r | |
404 | ParentNode = (AML_OBJECT_NODE*)AmlGetParent ((AML_NODE_HEADER*)DataNode);\r | |
405 | if (!IS_AML_OBJECT_NODE (ParentNode)) {\r | |
406 | ASSERT (0);\r | |
407 | return EFI_INVALID_PARAMETER;\r | |
408 | }\r | |
409 | \r | |
410 | // The NewNode and OldNode must have the same type.\r | |
411 | // We do not allow to change the argument type of a data node.\r | |
412 | // If required, the initial ASL template should be modified\r | |
413 | // accordingly.\r | |
414 | // It is however possible to interchange a raw buffer and a\r | |
415 | // resource data element, since raw data can be misinterpreted\r | |
416 | // as a resource data element.\r | |
417 | ExpectedArgType = DataNode->DataType;\r | |
418 | if ((ExpectedArgType != DataType) &&\r | |
419 | (((ExpectedArgType != EAmlNodeDataTypeRaw) &&\r | |
420 | (ExpectedArgType != EAmlNodeDataTypeResourceData)) ||\r | |
421 | ((DataType != EAmlNodeDataTypeRaw) &&\r | |
422 | (DataType != EAmlNodeDataTypeResourceData)))) {\r | |
423 | ASSERT (0);\r | |
424 | return EFI_UNSUPPORTED;\r | |
425 | }\r | |
426 | \r | |
427 | // Perform some compatibility checks.\r | |
428 | switch (DataType) {\r | |
429 | case EAmlNodeDataTypeNameString:\r | |
430 | {\r | |
431 | // Check the name contained in the Buffer is an AML name\r | |
432 | // with the right size.\r | |
433 | Status = AmlGetNameStringSize ((CONST CHAR8*)Buffer, &ExpectedSize);\r | |
434 | if (EFI_ERROR (Status) ||\r | |
435 | (Size != ExpectedSize)) {\r | |
436 | ASSERT (0);\r | |
437 | return Status;\r | |
438 | }\r | |
439 | break;\r | |
440 | }\r | |
441 | case EAmlNodeDataTypeString:\r | |
442 | {\r | |
443 | ExpectedSize = 0;\r | |
444 | while (ExpectedSize < Size) {\r | |
445 | // Cf ACPI 6.3 specification 20.2.3 Data Objects Encoding.\r | |
446 | // AsciiCharList := Nothing | <AsciiChar AsciiCharList>\r | |
447 | // AsciiChar := 0x01 - 0x7F\r | |
448 | // NullChar := 0x00\r | |
449 | if (Buffer[ExpectedSize] > 0x7F) {\r | |
450 | ASSERT (0);\r | |
451 | return EFI_INVALID_PARAMETER;\r | |
452 | }\r | |
453 | ExpectedSize++;\r | |
454 | }\r | |
455 | \r | |
456 | if (ExpectedSize != Size) {\r | |
457 | ASSERT (0);\r | |
458 | return EFI_INVALID_PARAMETER;\r | |
459 | }\r | |
460 | break;\r | |
461 | }\r | |
462 | case EAmlNodeDataTypeUInt:\r | |
463 | {\r | |
464 | if (AmlIsNodeFixedArgument ((CONST AML_NODE_HEADER*)DataNode, &Index)) {\r | |
465 | if ((ParentNode->AmlByteEncoding == NULL) ||\r | |
466 | (ParentNode->AmlByteEncoding->Format == NULL)) {\r | |
467 | ASSERT (0);\r | |
468 | return EFI_INVALID_PARAMETER;\r | |
469 | }\r | |
470 | \r | |
471 | // It is not possible to change the size of a fixed length UintX.\r | |
472 | // E.g. for PackageOp the first fixed argument is of type EAmlUInt8\r | |
473 | // and represents the count of elements. This type cannot be changed.\r | |
474 | if ((ParentNode->AmlByteEncoding->Format[Index] != EAmlObject) &&\r | |
475 | (DataNode->Size != Size)) {\r | |
476 | ASSERT (0);\r | |
477 | return EFI_UNSUPPORTED;\r | |
478 | }\r | |
479 | }\r | |
480 | break;\r | |
481 | }\r | |
482 | case EAmlNodeDataTypeRaw:\r | |
483 | {\r | |
484 | // Check if the parent node has the byte list flag set.\r | |
485 | if (!AmlNodeHasAttribute (ParentNode, AML_HAS_BYTE_LIST)) {\r | |
486 | ASSERT (0);\r | |
487 | return EFI_INVALID_PARAMETER;\r | |
488 | }\r | |
489 | break;\r | |
490 | }\r | |
491 | case EAmlNodeDataTypeResourceData:\r | |
492 | {\r | |
493 | // The resource data can be either small or large resource data.\r | |
494 | // Small resource data must be at least 1 byte.\r | |
495 | // Large resource data must be at least as long as the header\r | |
496 | // of a large resource data.\r | |
497 | if (AML_RD_IS_LARGE (Buffer) &&\r | |
498 | (Size < sizeof (ACPI_LARGE_RESOURCE_HEADER))) {\r | |
499 | ASSERT (0);\r | |
500 | return EFI_INVALID_PARAMETER;\r | |
501 | }\r | |
502 | \r | |
503 | // Check if the parent node has the byte list flag set.\r | |
504 | if (!AmlNodeHasAttribute (ParentNode, AML_HAS_BYTE_LIST)) {\r | |
505 | ASSERT (0);\r | |
506 | return EFI_INVALID_PARAMETER;\r | |
507 | }\r | |
508 | \r | |
509 | // Check the size of the buffer is equal to the resource data size\r | |
510 | // encoded in the input buffer.\r | |
511 | ExpectedSize = AmlRdGetSize (Buffer);\r | |
512 | if (ExpectedSize != Size) {\r | |
513 | ASSERT (0);\r | |
514 | return EFI_INVALID_PARAMETER;\r | |
515 | }\r | |
7b2022d3 PG |
516 | \r |
517 | Status = AmlSetRdListCheckSum (ParentNode, 0);\r | |
518 | if (EFI_ERROR (Status)) {\r | |
519 | ASSERT (0);\r | |
520 | return Status;\r | |
521 | }\r | |
522 | \r | |
bcab901b PG |
523 | break;\r |
524 | }\r | |
525 | case EAmlNodeDataTypeFieldPkgLen:\r | |
526 | {\r | |
527 | // Check the parent is a FieldNamed field element.\r | |
528 | if (!AmlNodeCompareOpCode (ParentNode, AML_FIELD_NAMED_OP, 0)) {\r | |
529 | ASSERT (0);\r | |
530 | return EFI_INVALID_PARAMETER;\r | |
531 | }\r | |
532 | break;\r | |
533 | }\r | |
534 | // None and reserved types.\r | |
535 | default:\r | |
536 | {\r | |
537 | ASSERT (0);\r | |
538 | return EFI_INVALID_PARAMETER;\r | |
539 | break;\r | |
540 | }\r | |
541 | } // switch\r | |
542 | \r | |
543 | // If the new size is different from the old size, propagate the new size.\r | |
544 | if (DataNode->Size != Size) {\r | |
545 | // Propagate the information.\r | |
546 | Status = AmlPropagateInformation (\r | |
547 | DataNode->NodeHeader.Parent,\r | |
548 | (Size > DataNode->Size) ? TRUE : FALSE,\r | |
549 | (Size > DataNode->Size) ?\r | |
550 | (Size - DataNode->Size) :\r | |
551 | (DataNode->Size - Size),\r | |
552 | 0\r | |
553 | );\r | |
554 | if (EFI_ERROR (Status)) {\r | |
555 | ASSERT (0);\r | |
556 | return Status;\r | |
557 | }\r | |
558 | \r | |
559 | // Free the old DataNode buffer and allocate a new buffer to store the\r | |
560 | // new data.\r | |
561 | FreePool (DataNode->Buffer);\r | |
562 | DataNode->Buffer = AllocateZeroPool (Size);\r | |
563 | if (DataNode->Buffer == NULL) {\r | |
564 | ASSERT (0);\r | |
565 | return EFI_OUT_OF_RESOURCES;\r | |
566 | }\r | |
567 | DataNode->Size = Size;\r | |
568 | }\r | |
569 | \r | |
570 | CopyMem (DataNode->Buffer, Buffer, Size);\r | |
571 | \r | |
572 | return EFI_SUCCESS;\r | |
573 | }\r |