1 /******************************************************************************
3 * Module Name: tbrsdt - ACPI RSDT table utilities
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
13 * All rights reserved.
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
38 * The above copyright and patent license is granted only if the following
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
73 * 3.4. Intel retains all right, title, and interest in and to the Original
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
81 * 4. Disclaimer and Export Compliance
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
119 #include <contrib/dev/acpica/acpi.h>
120 #include <contrib/dev/acpica/actables.h>
123 #define _COMPONENT ACPI_TABLES
124 ACPI_MODULE_NAME ("tbrsdt")
127 /*******************************************************************************
129 * FUNCTION: AcpiTbVerifyRsdp
131 * PARAMETERS: Address - RSDP (Pointer to RSDT)
135 * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
137 ******************************************************************************/
141 ACPI_POINTER *Address)
143 ACPI_TABLE_DESC TableInfo;
145 RSDP_DESCRIPTOR *Rsdp;
148 ACPI_FUNCTION_TRACE ("TbVerifyRsdp");
151 switch (Address->PointerType)
153 case ACPI_LOGICAL_POINTER:
155 Rsdp = Address->Pointer.Logical;
158 case ACPI_PHYSICAL_POINTER:
160 * Obtain access to the RSDP structure
162 Status = AcpiOsMapMemory (Address->Pointer.Physical,
163 sizeof (RSDP_DESCRIPTOR),
165 if (ACPI_FAILURE (Status))
167 return_ACPI_STATUS (Status);
172 return_ACPI_STATUS (AE_BAD_PARAMETER);
175 /* Verify RSDP signature and checksum */
177 Status = AcpiTbValidateRsdp (Rsdp);
178 if (ACPI_FAILURE (Status))
183 /* The RSDP supplied is OK */
185 TableInfo.Pointer = ACPI_CAST_PTR (ACPI_TABLE_HEADER, Rsdp);
186 TableInfo.Length = sizeof (RSDP_DESCRIPTOR);
187 TableInfo.Allocation = ACPI_MEM_MAPPED;
189 /* Save the table pointers and allocation info */
191 Status = AcpiTbInitTableDescriptor (ACPI_TABLE_RSDP, &TableInfo);
192 if (ACPI_FAILURE (Status))
197 /* Save the RSDP in a global for easy access */
199 AcpiGbl_RSDP = ACPI_CAST_PTR (RSDP_DESCRIPTOR, TableInfo.Pointer);
200 return_ACPI_STATUS (Status);
206 if (AcpiGbl_TableFlags & ACPI_PHYSICAL_POINTER)
208 AcpiOsUnmapMemory (Rsdp, sizeof (RSDP_DESCRIPTOR));
210 return_ACPI_STATUS (Status);
214 /*******************************************************************************
216 * FUNCTION: AcpiTbGetRsdtAddress
218 * PARAMETERS: OutAddress - Where the address is returned
220 * RETURN: None, Address
222 * DESCRIPTION: Extract the address of either the RSDT or XSDT, depending on the
223 * version of the RSDP and whether the XSDT pointer is valid
225 ******************************************************************************/
228 AcpiTbGetRsdtAddress (
229 ACPI_POINTER *OutAddress)
232 ACPI_FUNCTION_ENTRY ();
235 OutAddress->PointerType = AcpiGbl_TableFlags | ACPI_LOGICAL_ADDRESSING;
237 /* Use XSDT if it is present */
239 if ((AcpiGbl_RSDP->Revision >= 2) &&
240 ACPI_GET_ADDRESS (AcpiGbl_RSDP->XsdtPhysicalAddress))
242 OutAddress->Pointer.Value =
243 ACPI_GET_ADDRESS (AcpiGbl_RSDP->XsdtPhysicalAddress);
244 AcpiGbl_RootTableType = ACPI_TABLE_TYPE_XSDT;
248 /* No XSDT, use the RSDT */
250 OutAddress->Pointer.Value = AcpiGbl_RSDP->RsdtPhysicalAddress;
251 AcpiGbl_RootTableType = ACPI_TABLE_TYPE_RSDT;
256 /*******************************************************************************
258 * FUNCTION: AcpiTbValidateRsdt
260 * PARAMETERS: TablePtr - Addressable pointer to the RSDT.
264 * DESCRIPTION: Validate signature for the RSDT or XSDT
266 ******************************************************************************/
270 ACPI_TABLE_HEADER *TablePtr)
275 ACPI_FUNCTION_NAME ("TbValidateRsdt");
279 * Search for appropriate signature, RSDT or XSDT
281 if (AcpiGbl_RootTableType == ACPI_TABLE_TYPE_RSDT)
283 NoMatch = ACPI_STRNCMP ((char *) TablePtr, RSDT_SIG,
284 sizeof (RSDT_SIG) -1);
288 NoMatch = ACPI_STRNCMP ((char *) TablePtr, XSDT_SIG,
289 sizeof (XSDT_SIG) -1);
294 /* Invalid RSDT or XSDT signature */
297 "Invalid signature where RSDP indicates RSDT/XSDT should be located\n"));
299 ACPI_DUMP_BUFFER (AcpiGbl_RSDP, 20);
301 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR,
302 "RSDT/XSDT signature at %X (%p) is invalid\n",
303 AcpiGbl_RSDP->RsdtPhysicalAddress,
304 (void *) (ACPI_NATIVE_UINT) AcpiGbl_RSDP->RsdtPhysicalAddress));
306 if (AcpiGbl_RootTableType == ACPI_TABLE_TYPE_RSDT)
308 ACPI_REPORT_ERROR (("Looking for RSDT\n"))
312 ACPI_REPORT_ERROR (("Looking for XSDT\n"))
315 ACPI_DUMP_BUFFER ((char *) TablePtr, 48);
317 return (AE_BAD_SIGNATURE);
324 /*******************************************************************************
326 * FUNCTION: AcpiTbGetTableRsdt
332 * DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
334 ******************************************************************************/
340 ACPI_TABLE_DESC TableInfo;
342 ACPI_POINTER Address;
345 ACPI_FUNCTION_TRACE ("TbGetTableRsdt");
348 /* Get the RSDT/XSDT via the RSDP */
350 AcpiTbGetRsdtAddress (&Address);
352 TableInfo.Type = ACPI_TABLE_XSDT;
353 Status = AcpiTbGetTable (&Address, &TableInfo);
354 if (ACPI_FAILURE (Status))
356 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not get the RSDT/XSDT, %s\n",
357 AcpiFormatException (Status)));
359 return_ACPI_STATUS (Status);
362 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
363 "RSDP located at %p, points to RSDT physical=%8.8X%8.8X\n",
365 ACPI_FORMAT_UINT64 (Address.Pointer.Value)));
367 /* Check the RSDT or XSDT signature */
369 Status = AcpiTbValidateRsdt (TableInfo.Pointer);
370 if (ACPI_FAILURE (Status))
372 return_ACPI_STATUS (Status);
375 /* Get the number of tables defined in the RSDT or XSDT */
377 AcpiGbl_RsdtTableCount = AcpiTbGetTableCount (AcpiGbl_RSDP,
380 /* Convert and/or copy to an XSDT structure */
382 Status = AcpiTbConvertToXsdt (&TableInfo);
383 if (ACPI_FAILURE (Status))
385 return_ACPI_STATUS (Status);
388 /* Save the table pointers and allocation info */
390 Status = AcpiTbInitTableDescriptor (ACPI_TABLE_XSDT, &TableInfo);
391 if (ACPI_FAILURE (Status))
393 return_ACPI_STATUS (Status);
396 AcpiGbl_XSDT = ACPI_CAST_PTR (XSDT_DESCRIPTOR, TableInfo.Pointer);
398 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "XSDT located at %p\n", AcpiGbl_XSDT));
399 return_ACPI_STATUS (Status);