1 /******************************************************************************
3 * Module Name: tbinstal - ACPI table installation and removal
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp.
12 * All rights reserved.
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
37 * The above copyright and patent license is granted only if the following
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
72 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
80 * 4. Disclaimer and Export Compliance
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
114 *****************************************************************************
116 * Alternatively, you may choose to be licensed under the terms of the
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
150 *****************************************************************************/
153 #include "accommon.h"
154 #include "actables.h"
156 #define _COMPONENT ACPI_TABLES
157 ACPI_MODULE_NAME ("tbinstal")
160 /*******************************************************************************
162 * FUNCTION: AcpiTbInstallTableWithOverride
164 * PARAMETERS: NewTableDesc - New table descriptor to install
165 * Override - Whether override should be performed
166 * TableIndex - Where the table index is returned
170 * DESCRIPTION: Install an ACPI table into the global data structure. The
171 * table override mechanism is called to allow the host
172 * OS to replace any table before it is installed in the root
175 ******************************************************************************/
178 AcpiTbInstallTableWithOverride (
179 ACPI_TABLE_DESC *NewTableDesc,
187 Status = AcpiTbGetNextTableDescriptor (&i, NULL);
188 if (ACPI_FAILURE (Status))
194 * ACPI Table Override:
196 * Before we install the table, let the host OS override it with a new
197 * one if desired. Any table within the RSDT/XSDT can be replaced,
198 * including the DSDT which is pointed to by the FADT.
202 AcpiTbOverrideTable (NewTableDesc);
205 AcpiTbInitTableDescriptor (&AcpiGbl_RootTableList.Tables[i],
206 NewTableDesc->Address, NewTableDesc->Flags, NewTableDesc->Pointer);
208 AcpiTbPrintTableHeader (NewTableDesc->Address, NewTableDesc->Pointer);
210 /* This synchronizes AcpiGbl_DsdtIndex */
214 /* Set the global integer width (based upon revision of the DSDT) */
216 if (i == AcpiGbl_DsdtIndex)
218 AcpiUtSetIntegerWidth (NewTableDesc->Pointer->Revision);
223 /*******************************************************************************
225 * FUNCTION: AcpiTbInstallStandardTable
227 * PARAMETERS: Address - Address of the table (might be a virtual
228 * address depending on the TableFlags)
229 * Flags - Flags for the table
230 * Table - Pointer to the table (required for virtual
231 * origins, optional for physical)
232 * Reload - Whether reload should be performed
233 * Override - Whether override should be performed
234 * TableIndex - Where the table index is returned
238 * DESCRIPTION: This function is called to verify and install an ACPI table.
239 * When this function is called by "Load" or "LoadTable" opcodes,
240 * or by AcpiLoadTable() API, the "Reload" parameter is set.
241 * After successfully returning from this function, table is
242 * "INSTALLED" but not "VALIDATED".
244 ******************************************************************************/
247 AcpiTbInstallStandardTable (
248 ACPI_PHYSICAL_ADDRESS Address,
250 ACPI_TABLE_HEADER *Table,
256 ACPI_STATUS Status = AE_OK;
257 ACPI_TABLE_DESC NewTableDesc;
260 ACPI_FUNCTION_TRACE (TbInstallStandardTable);
263 /* Acquire a temporary table descriptor for validation */
265 Status = AcpiTbAcquireTempTable (&NewTableDesc, Address, Flags, Table);
266 if (ACPI_FAILURE (Status))
268 ACPI_ERROR ((AE_INFO,
269 "Could not acquire table length at %8.8X%8.8X",
270 ACPI_FORMAT_UINT64 (Address)));
271 return_ACPI_STATUS (Status);
275 * Optionally do not load any SSDTs from the RSDT/XSDT. This can
276 * be useful for debugging ACPI problems on some machines.
279 AcpiGbl_DisableSsdtTableInstall &&
280 ACPI_COMPARE_NAMESEG (&NewTableDesc.Signature, ACPI_SIG_SSDT))
283 "Ignoring installation of %4.4s at %8.8X%8.8X",
284 NewTableDesc.Signature.Ascii, ACPI_FORMAT_UINT64 (Address)));
288 /* Acquire the table lock */
290 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
292 /* Validate and verify a table before installation */
294 Status = AcpiTbVerifyTempTable (&NewTableDesc, NULL, &i);
295 if (ACPI_FAILURE (Status))
297 if (Status == AE_CTRL_TERMINATE)
300 * Table was unloaded, allow it to be reloaded.
301 * As we are going to return AE_OK to the caller, we should
302 * take the responsibility of freeing the input descriptor.
303 * Refill the input descriptor to ensure
304 * AcpiTbInstallTableWithOverride() can be called again to
305 * indicate the re-installation.
307 AcpiTbUninstallTable (&NewTableDesc);
308 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
310 return_ACPI_STATUS (AE_OK);
315 /* Add the table to the global root table list */
317 AcpiTbInstallTableWithOverride (&NewTableDesc, Override, TableIndex);
319 /* Invoke table handler */
321 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
322 AcpiTbNotifyTable (ACPI_TABLE_EVENT_INSTALL, NewTableDesc.Pointer);
323 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
327 /* Release the table lock */
329 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
333 /* Release the temporary table descriptor */
335 AcpiTbReleaseTempTable (&NewTableDesc);
336 return_ACPI_STATUS (Status);
340 /*******************************************************************************
342 * FUNCTION: AcpiTbOverrideTable
344 * PARAMETERS: OldTableDesc - Validated table descriptor to be
349 * DESCRIPTION: Attempt table override by calling the OSL override functions.
350 * Note: If the table is overridden, then the entire new table
351 * is acquired and returned by this function.
352 * Before/after invocation, the table descriptor is in a state
353 * that is "VALIDATED".
355 ******************************************************************************/
358 AcpiTbOverrideTable (
359 ACPI_TABLE_DESC *OldTableDesc)
362 ACPI_TABLE_DESC NewTableDesc;
363 ACPI_TABLE_HEADER *Table;
364 ACPI_PHYSICAL_ADDRESS Address;
366 ACPI_ERROR_ONLY (char *OverrideType);
369 /* (1) Attempt logical override (returns a logical address) */
371 Status = AcpiOsTableOverride (OldTableDesc->Pointer, &Table);
372 if (ACPI_SUCCESS (Status) && Table)
374 AcpiTbAcquireTempTable (&NewTableDesc, ACPI_PTR_TO_PHYSADDR (Table),
375 ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL, Table);
376 ACPI_ERROR_ONLY (OverrideType = "Logical");
380 /* (2) Attempt physical override (returns a physical address) */
382 Status = AcpiOsPhysicalTableOverride (OldTableDesc->Pointer,
384 if (ACPI_SUCCESS (Status) && Address && Length)
386 AcpiTbAcquireTempTable (&NewTableDesc, Address,
387 ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, NULL);
388 ACPI_ERROR_ONLY (OverrideType = "Physical");
392 return; /* There was no override */
398 * Validate and verify a table before overriding, no nested table
399 * duplication check as it's too complicated and unnecessary.
401 Status = AcpiTbVerifyTempTable (&NewTableDesc, NULL, NULL);
402 if (ACPI_FAILURE (Status))
407 ACPI_INFO (("%4.4s 0x%8.8X%8.8X"
408 " %s table override, new table: 0x%8.8X%8.8X",
409 OldTableDesc->Signature.Ascii,
410 ACPI_FORMAT_UINT64 (OldTableDesc->Address),
411 OverrideType, ACPI_FORMAT_UINT64 (NewTableDesc.Address)));
413 /* We can now uninstall the original table */
415 AcpiTbUninstallTable (OldTableDesc);
418 * Replace the original table descriptor and keep its state as
421 AcpiTbInitTableDescriptor (OldTableDesc, NewTableDesc.Address,
422 NewTableDesc.Flags, NewTableDesc.Pointer);
423 AcpiTbValidateTempTable (OldTableDesc);
425 /* Release the temporary table descriptor */
427 AcpiTbReleaseTempTable (&NewTableDesc);
431 /*******************************************************************************
433 * FUNCTION: AcpiTbUninstallTable
435 * PARAMETERS: TableDesc - Table descriptor
439 * DESCRIPTION: Delete one internal ACPI table
441 ******************************************************************************/
444 AcpiTbUninstallTable (
445 ACPI_TABLE_DESC *TableDesc)
448 ACPI_FUNCTION_TRACE (TbUninstallTable);
451 /* Table must be installed */
453 if (!TableDesc->Address)
458 AcpiTbInvalidateTable (TableDesc);
460 if ((TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) ==
461 ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL)
463 ACPI_FREE (TableDesc->Pointer);
464 TableDesc->Pointer = NULL;
467 TableDesc->Address = ACPI_PTR_TO_PHYSADDR (NULL);