1 /******************************************************************************
2 *
3 * Module Name: tbinstal - ACPI table installation and removal
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44
45 #define __TBINSTAL_C__
46
47 #include "acpi.h"
48 #include "accommon.h"
49 #include "acnamesp.h"
50 #include "actables.h"
51
52
53 #define _COMPONENT ACPI_TABLES
54 ACPI_MODULE_NAME ("tbinstal")
55
56
57 /******************************************************************************
58 *
59 * FUNCTION: AcpiTbVerifyTable
60 *
61 * PARAMETERS: TableDesc - table
62 *
63 * RETURN: Status
64 *
65 * DESCRIPTION: this function is called to verify and map table
66 *
67 *****************************************************************************/
68
69 ACPI_STATUS
70 AcpiTbVerifyTable (
71 ACPI_TABLE_DESC *TableDesc)
72 {
73 ACPI_STATUS Status = AE_OK;
74
75
76 ACPI_FUNCTION_TRACE (TbVerifyTable);
77
78
79 /* Map the table if necessary */
80
81 if (!TableDesc->Pointer)
82 {
83 if ((TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) ==
84 ACPI_TABLE_ORIGIN_MAPPED)
85 {
86 TableDesc->Pointer = AcpiOsMapMemory (
87 TableDesc->Address, TableDesc->Length);
88 }
89
90 if (!TableDesc->Pointer)
91 {
92 return_ACPI_STATUS (AE_NO_MEMORY);
93 }
94 }
95
96 /* FACS is the odd table, has no standard ACPI header and no checksum */
97
98 if (!ACPI_COMPARE_NAME (&TableDesc->Signature, ACPI_SIG_FACS))
99 {
100 /* Always calculate checksum, ignore bad checksum if requested */
101
102 Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
103 }
104
105 return_ACPI_STATUS (Status);
106 }
107
108
109 /*******************************************************************************
110 *
111 * FUNCTION: AcpiTbAddTable
112 *
113 * PARAMETERS: TableDesc - Table descriptor
114 * TableIndex - Where the table index is returned
115 *
116 * RETURN: Status
117 *
118 * DESCRIPTION: This function is called to add an ACPI table. It is used to
119 * dynamically load tables via the Load and LoadTable AML
120 * operators.
121 *
122 ******************************************************************************/
123
124 ACPI_STATUS
125 AcpiTbAddTable (
126 ACPI_TABLE_DESC *TableDesc,
127 UINT32 *TableIndex)
128 {
129 UINT32 i;
130 ACPI_STATUS Status = AE_OK;
131 ACPI_TABLE_HEADER *OverrideTable = NULL;
132
133
134 ACPI_FUNCTION_TRACE (TbAddTable);
135
136
137 if (!TableDesc->Pointer)
138 {
139 Status = AcpiTbVerifyTable (TableDesc);
140 if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
141 {
142 return_ACPI_STATUS (Status);
143 }
144 }
145
146 /*
147 * Validate the incoming table signature.
148 *
149 * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
150 * 2) We added support for OEMx tables, signature "OEM".
151 * 3) Valid tables were encountered with a null signature, so we just
152 * gave up on validating the signature, (05/2008).
153 * 4) We encountered non-AML tables such as the MADT, which caused
154 * interpreter errors and kernel faults. So now, we once again allow
155 * only "SSDT", "OEMx", and now, also a null signature. (05/2011).
156 */
157 if ((TableDesc->Pointer->Signature[0] != 0x00) &&
158 (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) &&
159 (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3)))
160 {
161 ACPI_ERROR ((AE_INFO,
162 "Table has invalid signature [%4.4s] (0x%8.8X), must be SSDT or OEMx",
163 AcpiUtValidAcpiName (*(UINT32 *) TableDesc->Pointer->Signature) ?
164 TableDesc->Pointer->Signature : "????",
165 *(UINT32 *) TableDesc->Pointer->Signature));
166
167 return_ACPI_STATUS (AE_BAD_SIGNATURE);
168 }
169
170 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
171
172 /* Check if table is already registered */
173
174 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
175 {
176 if (!AcpiGbl_RootTableList.Tables[i].Pointer)
177 {
178 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
179 if (ACPI_FAILURE (Status) ||
180 !AcpiGbl_RootTableList.Tables[i].Pointer)
181 {
182 continue;
183 }
184 }
185
186 /*
187 * Check for a table match on the entire table length,
188 * not just the header.
189 */
190 if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
191 {
192 continue;
193 }
194
195 if (ACPI_MEMCMP (TableDesc->Pointer,
196 AcpiGbl_RootTableList.Tables[i].Pointer,
197 AcpiGbl_RootTableList.Tables[i].Length))
198 {
199 continue;
200 }
201
202 /*
203 * Note: the current mechanism does not unregister a table if it is
204 * dynamically unloaded. The related namespace entries are deleted,
205 * but the table remains in the root table list.
206 *
207 * The assumption here is that the number of different tables that
208 * will be loaded is actually small, and there is minimal overhead
209 * in just keeping the table in case it is needed again.
210 *
211 * If this assumption changes in the future (perhaps on large
212 * machines with many table load/unload operations), tables will
213 * need to be unregistered when they are unloaded, and slots in the
214 * root table list should be reused when empty.
215 */
216
217 /*
218 * Table is already registered.
219 * We can delete the table that was passed as a parameter.
220 */
221 AcpiTbDeleteTable (TableDesc);
222 *TableIndex = i;
223
224 if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED)
225 {
226 /* Table is still loaded, this is an error */
227
228 Status = AE_ALREADY_EXISTS;
229 goto Release;
230 }
231 else
232 {
233 /* Table was unloaded, allow it to be reloaded */
234
235 TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer;
236 TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address;
237 Status = AE_OK;
238 goto PrintHeader;
239 }
240 }
241
242 /*
243 * ACPI Table Override:
244 * Allow the host to override dynamically loaded tables.
245 */
246 Status = AcpiOsTableOverride (TableDesc->Pointer, &OverrideTable);
247 if (ACPI_SUCCESS (Status) && OverrideTable)
248 {
249 ACPI_INFO ((AE_INFO,
250 "%4.4s @ 0x%p Table override, replaced with:",
251 TableDesc->Pointer->Signature,
252 ACPI_CAST_PTR (void, TableDesc->Address)));
253
254 /* We can delete the table that was passed as a parameter */
255
256 AcpiTbDeleteTable (TableDesc);
257
258 /* Setup descriptor for the new table */
259
260 TableDesc->Address = ACPI_PTR_TO_PHYSADDR (OverrideTable);
261 TableDesc->Pointer = OverrideTable;
262 TableDesc->Length = OverrideTable->Length;
263 TableDesc->Flags = ACPI_TABLE_ORIGIN_OVERRIDE;
264 }
265
266 /* Add the table to the global root table list */
267
268 Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
269 TableDesc->Length, TableDesc->Flags, TableIndex);
270 if (ACPI_FAILURE (Status))
271 {
272 goto Release;
273 }
274
275 PrintHeader:
276 AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
277
278 Release:
279 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
280 return_ACPI_STATUS (Status);
281 }
282
283
284 /*******************************************************************************
285 *
286 * FUNCTION: AcpiTbResizeRootTableList
287 *
288 * PARAMETERS: None
289 *
290 * RETURN: Status
291 *
292 * DESCRIPTION: Expand the size of global table array
293 *
294 ******************************************************************************/
295
296 ACPI_STATUS
297 AcpiTbResizeRootTableList (
298 void)
299 {
300 ACPI_TABLE_DESC *Tables;
301
302
303 ACPI_FUNCTION_TRACE (TbResizeRootTableList);
304
305
306 /* AllowResize flag is a parameter to AcpiInitializeTables */
307
308 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE))
309 {
310 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed"));
311 return_ACPI_STATUS (AE_SUPPORT);
312 }
313
314 /* Increase the Table Array size */
315
316 Tables = ACPI_ALLOCATE_ZEROED (
317 ((ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount +
318 ACPI_ROOT_TABLE_SIZE_INCREMENT) *
319 sizeof (ACPI_TABLE_DESC));
320 if (!Tables)
321 {
322 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array"));
323 return_ACPI_STATUS (AE_NO_MEMORY);
324 }
325
326 /* Copy and free the previous table array */
327
328 if (AcpiGbl_RootTableList.Tables)
329 {
330 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables,
331 (ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount * sizeof (ACPI_TABLE_DESC));
332
333 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
334 {
335 ACPI_FREE (AcpiGbl_RootTableList.Tables);
336 }
337 }
338
339 AcpiGbl_RootTableList.Tables = Tables;
340 AcpiGbl_RootTableList.MaxTableCount += ACPI_ROOT_TABLE_SIZE_INCREMENT;
341 AcpiGbl_RootTableList.Flags |= (UINT8) ACPI_ROOT_ORIGIN_ALLOCATED;
342
343 return_ACPI_STATUS (AE_OK);
344 }
345
346
347 /*******************************************************************************
348 *
349 * FUNCTION: AcpiTbStoreTable
350 *
351 * PARAMETERS: Address - Table address
352 * Table - Table header
353 * Length - Table length
354 * Flags - flags
355 *
356 * RETURN: Status and table index.
357 *
358 * DESCRIPTION: Add an ACPI table to the global table list
359 *
360 ******************************************************************************/
361
362 ACPI_STATUS
363 AcpiTbStoreTable (
364 ACPI_PHYSICAL_ADDRESS Address,
365 ACPI_TABLE_HEADER *Table,
366 UINT32 Length,
367 UINT8 Flags,
368 UINT32 *TableIndex)
369 {
370 ACPI_STATUS Status;
371 ACPI_TABLE_DESC *NewTable;
372
373
374 /* Ensure that there is room for the table in the Root Table List */
375
376 if (AcpiGbl_RootTableList.CurrentTableCount >=
377 AcpiGbl_RootTableList.MaxTableCount)
378 {
379 Status = AcpiTbResizeRootTableList();
380 if (ACPI_FAILURE (Status))
381 {
382 return (Status);
383 }
384 }
385
386 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount];
387
388 /* Initialize added table */
389
390 NewTable->Address = Address;
391 NewTable->Pointer = Table;
392 NewTable->Length = Length;
393 NewTable->OwnerId = 0;
394 NewTable->Flags = Flags;
395
396 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature);
397
398 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount;
399 AcpiGbl_RootTableList.CurrentTableCount++;
400 return (AE_OK);
401 }
402
403
404 /*******************************************************************************
405 *
406 * FUNCTION: AcpiTbDeleteTable
407 *
408 * PARAMETERS: TableIndex - Table index
409 *
410 * RETURN: None
411 *
412 * DESCRIPTION: Delete one internal ACPI table
413 *
414 ******************************************************************************/
415
416 void
417 AcpiTbDeleteTable (
418 ACPI_TABLE_DESC *TableDesc)
419 {
420
421 /* Table must be mapped or allocated */
422
423 if (!TableDesc->Pointer)
424 {
425 return;
426 }
427
428 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK)
429 {
430 case ACPI_TABLE_ORIGIN_MAPPED:
431 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
432 break;
433
434 case ACPI_TABLE_ORIGIN_ALLOCATED:
435 ACPI_FREE (TableDesc->Pointer);
436 break;
437
438 default:
439 break;
440 }
441
442 TableDesc->Pointer = NULL;
443 }
444
445
446 /*******************************************************************************
447 *
448 * FUNCTION: AcpiTbTerminate
449 *
450 * PARAMETERS: None
451 *
452 * RETURN: None
453 *
454 * DESCRIPTION: Delete all internal ACPI tables
455 *
456 ******************************************************************************/
457
458 void
459 AcpiTbTerminate (
460 void)
461 {
462 UINT32 i;
463
464
465 ACPI_FUNCTION_TRACE (TbTerminate);
466
467
468 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
469
470 /* Delete the individual tables */
471
472 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
473 {
474 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]);
475 }
476
477 /*
478 * Delete the root table array if allocated locally. Array cannot be
479 * mapped, so we don't need to check for that flag.
480 */
481 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
482 {
483 ACPI_FREE (AcpiGbl_RootTableList.Tables);
484 }
485
486 AcpiGbl_RootTableList.Tables = NULL;
487 AcpiGbl_RootTableList.Flags = 0;
488 AcpiGbl_RootTableList.CurrentTableCount = 0;
489
490 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));
491 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
492 }
493
494
495 /*******************************************************************************
496 *
497 * FUNCTION: AcpiTbDeleteNamespaceByOwner
498 *
499 * PARAMETERS: TableIndex - Table index
500 *
501 * RETURN: Status
502 *
503 * DESCRIPTION: Delete all namespace objects created when this table was loaded.
504 *
505 ******************************************************************************/
506
507 ACPI_STATUS
508 AcpiTbDeleteNamespaceByOwner (
509 UINT32 TableIndex)
510 {
511 ACPI_OWNER_ID OwnerId;
512 ACPI_STATUS Status;
513
514
515 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner);
516
517
518 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
519 if (ACPI_FAILURE (Status))
520 {
521 return_ACPI_STATUS (Status);
522 }
523
524 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount)
525 {
526 /* The table index does not exist */
527
528 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
529 return_ACPI_STATUS (AE_NOT_EXIST);
530 }
531
532 /* Get the owner ID for this table, used to delete namespace nodes */
533
534 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
535 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
536
537 /*
538 * Need to acquire the namespace writer lock to prevent interference
539 * with any concurrent namespace walks. The interpreter must be
540 * released during the deletion since the acquisition of the deletion
541 * lock may block, and also since the execution of a namespace walk
542 * must be allowed to use the interpreter.
543 */
544 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
545 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock);
546
547 AcpiNsDeleteNamespaceByOwner (OwnerId);
548 if (ACPI_FAILURE (Status))
549 {
550 return_ACPI_STATUS (Status);
551 }
552
553 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock);
554
555 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
556 return_ACPI_STATUS (Status);
557 }
558
559
560 /*******************************************************************************
561 *
562 * FUNCTION: AcpiTbAllocateOwnerId
563 *
564 * PARAMETERS: TableIndex - Table index
565 *
566 * RETURN: Status
567 *
568 * DESCRIPTION: Allocates OwnerId in TableDesc
569 *
570 ******************************************************************************/
571
572 ACPI_STATUS
573 AcpiTbAllocateOwnerId (
574 UINT32 TableIndex)
575 {
576 ACPI_STATUS Status = AE_BAD_PARAMETER;
577
578
579 ACPI_FUNCTION_TRACE (TbAllocateOwnerId);
580
581
582 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
583 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
584 {
585 Status = AcpiUtAllocateOwnerId
586 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
587 }
588
589 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
590 return_ACPI_STATUS (Status);
591 }
592
593
594 /*******************************************************************************
595 *
596 * FUNCTION: AcpiTbReleaseOwnerId
597 *
598 * PARAMETERS: TableIndex - Table index
599 *
600 * RETURN: Status
601 *
602 * DESCRIPTION: Releases OwnerId in TableDesc
603 *
604 ******************************************************************************/
605
606 ACPI_STATUS
607 AcpiTbReleaseOwnerId (
608 UINT32 TableIndex)
609 {
610 ACPI_STATUS Status = AE_BAD_PARAMETER;
611
612
613 ACPI_FUNCTION_TRACE (TbReleaseOwnerId);
614
615
616 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
617 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
618 {
619 AcpiUtReleaseOwnerId (
620 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
621 Status = AE_OK;
622 }
623
624 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
625 return_ACPI_STATUS (Status);
626 }
627
628
629 /*******************************************************************************
630 *
631 * FUNCTION: AcpiTbGetOwnerId
632 *
633 * PARAMETERS: TableIndex - Table index
634 * OwnerId - Where the table OwnerId is returned
635 *
636 * RETURN: Status
637 *
638 * DESCRIPTION: returns OwnerId for the ACPI table
639 *
640 ******************************************************************************/
641
642 ACPI_STATUS
643 AcpiTbGetOwnerId (
644 UINT32 TableIndex,
645 ACPI_OWNER_ID *OwnerId)
646 {
647 ACPI_STATUS Status = AE_BAD_PARAMETER;
648
649
650 ACPI_FUNCTION_TRACE (TbGetOwnerId);
651
652
653 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
654 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
655 {
656 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
657 Status = AE_OK;
658 }
659
660 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
661 return_ACPI_STATUS (Status);
662 }
663
664
665 /*******************************************************************************
666 *
667 * FUNCTION: AcpiTbIsTableLoaded
668 *
669 * PARAMETERS: TableIndex - Table index
670 *
671 * RETURN: Table Loaded Flag
672 *
673 ******************************************************************************/
674
675 BOOLEAN
676 AcpiTbIsTableLoaded (
677 UINT32 TableIndex)
678 {
679 BOOLEAN IsLoaded = FALSE;
680
681
682 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
683 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
684 {
685 IsLoaded = (BOOLEAN)
686 (AcpiGbl_RootTableList.Tables[TableIndex].Flags &
687 ACPI_TABLE_IS_LOADED);
688 }
689
690 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
691 return (IsLoaded);
692 }
693
694
695 /*******************************************************************************
696 *
697 * FUNCTION: AcpiTbSetTableLoadedFlag
698 *
699 * PARAMETERS: TableIndex - Table index
700 * IsLoaded - TRUE if table is loaded, FALSE otherwise
701 *
702 * RETURN: None
703 *
704 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
705 *
706 ******************************************************************************/
707
708 void
709 AcpiTbSetTableLoadedFlag (
710 UINT32 TableIndex,
711 BOOLEAN IsLoaded)
712 {
713
714 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
715 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
716 {
717 if (IsLoaded)
718 {
719 AcpiGbl_RootTableList.Tables[TableIndex].Flags |=
720 ACPI_TABLE_IS_LOADED;
721 }
722 else
723 {
724 AcpiGbl_RootTableList.Tables[TableIndex].Flags &=
725 ~ACPI_TABLE_IS_LOADED;
726 }
727 }
728
729 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
730 }
731