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dttable.c revision 1.18.6.1
      1       1.1    jruoho /******************************************************************************
      2       1.1    jruoho  *
      3       1.1    jruoho  * Module Name: dttable.c - handling for specific ACPI tables
      4       1.1    jruoho  *
      5       1.1    jruoho  *****************************************************************************/
      6       1.1    jruoho 
      7  1.18.6.1  perseant /******************************************************************************
      8  1.18.6.1  perseant  *
      9  1.18.6.1  perseant  * 1. Copyright Notice
     10  1.18.6.1  perseant  *
     11  1.18.6.1  perseant  * Some or all of this work - Copyright (c) 1999 - 2024, Intel Corp.
     12       1.1    jruoho  * All rights reserved.
     13       1.1    jruoho  *
     14  1.18.6.1  perseant  * 2. License
     15  1.18.6.1  perseant  *
     16  1.18.6.1  perseant  * 2.1. This is your license from Intel Corp. under its intellectual property
     17  1.18.6.1  perseant  * rights. You may have additional license terms from the party that provided
     18  1.18.6.1  perseant  * you this software, covering your right to use that party's intellectual
     19  1.18.6.1  perseant  * property rights.
     20  1.18.6.1  perseant  *
     21  1.18.6.1  perseant  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
     22  1.18.6.1  perseant  * copy of the source code appearing in this file ("Covered Code") an
     23  1.18.6.1  perseant  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
     24  1.18.6.1  perseant  * base code distributed originally by Intel ("Original Intel Code") to copy,
     25  1.18.6.1  perseant  * make derivatives, distribute, use and display any portion of the Covered
     26  1.18.6.1  perseant  * Code in any form, with the right to sublicense such rights; and
     27  1.18.6.1  perseant  *
     28  1.18.6.1  perseant  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
     29  1.18.6.1  perseant  * license (with the right to sublicense), under only those claims of Intel
     30  1.18.6.1  perseant  * patents that are infringed by the Original Intel Code, to make, use, sell,
     31  1.18.6.1  perseant  * offer to sell, and import the Covered Code and derivative works thereof
     32  1.18.6.1  perseant  * solely to the minimum extent necessary to exercise the above copyright
     33  1.18.6.1  perseant  * license, and in no event shall the patent license extend to any additions
     34  1.18.6.1  perseant  * to or modifications of the Original Intel Code. No other license or right
     35  1.18.6.1  perseant  * is granted directly or by implication, estoppel or otherwise;
     36  1.18.6.1  perseant  *
     37  1.18.6.1  perseant  * The above copyright and patent license is granted only if the following
     38  1.18.6.1  perseant  * conditions are met:
     39  1.18.6.1  perseant  *
     40  1.18.6.1  perseant  * 3. Conditions
     41  1.18.6.1  perseant  *
     42  1.18.6.1  perseant  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
     43  1.18.6.1  perseant  * Redistribution of source code of any substantial portion of the Covered
     44  1.18.6.1  perseant  * Code or modification with rights to further distribute source must include
     45  1.18.6.1  perseant  * the above Copyright Notice, the above License, this list of Conditions,
     46  1.18.6.1  perseant  * and the following Disclaimer and Export Compliance provision. In addition,
     47  1.18.6.1  perseant  * Licensee must cause all Covered Code to which Licensee contributes to
     48  1.18.6.1  perseant  * contain a file documenting the changes Licensee made to create that Covered
     49  1.18.6.1  perseant  * Code and the date of any change. Licensee must include in that file the
     50  1.18.6.1  perseant  * documentation of any changes made by any predecessor Licensee. Licensee
     51  1.18.6.1  perseant  * must include a prominent statement that the modification is derived,
     52  1.18.6.1  perseant  * directly or indirectly, from Original Intel Code.
     53  1.18.6.1  perseant  *
     54  1.18.6.1  perseant  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
     55  1.18.6.1  perseant  * Redistribution of source code of any substantial portion of the Covered
     56  1.18.6.1  perseant  * Code or modification without rights to further distribute source must
     57  1.18.6.1  perseant  * include the following Disclaimer and Export Compliance provision in the
     58  1.18.6.1  perseant  * documentation and/or other materials provided with distribution. In
     59  1.18.6.1  perseant  * addition, Licensee may not authorize further sublicense of source of any
     60  1.18.6.1  perseant  * portion of the Covered Code, and must include terms to the effect that the
     61  1.18.6.1  perseant  * license from Licensee to its licensee is limited to the intellectual
     62  1.18.6.1  perseant  * property embodied in the software Licensee provides to its licensee, and
     63  1.18.6.1  perseant  * not to intellectual property embodied in modifications its licensee may
     64  1.18.6.1  perseant  * make.
     65  1.18.6.1  perseant  *
     66  1.18.6.1  perseant  * 3.3. Redistribution of Executable. Redistribution in executable form of any
     67  1.18.6.1  perseant  * substantial portion of the Covered Code or modification must reproduce the
     68  1.18.6.1  perseant  * above Copyright Notice, and the following Disclaimer and Export Compliance
     69  1.18.6.1  perseant  * provision in the documentation and/or other materials provided with the
     70  1.18.6.1  perseant  * distribution.
     71  1.18.6.1  perseant  *
     72  1.18.6.1  perseant  * 3.4. Intel retains all right, title, and interest in and to the Original
     73  1.18.6.1  perseant  * Intel Code.
     74  1.18.6.1  perseant  *
     75  1.18.6.1  perseant  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
     76  1.18.6.1  perseant  * Intel shall be used in advertising or otherwise to promote the sale, use or
     77  1.18.6.1  perseant  * other dealings in products derived from or relating to the Covered Code
     78  1.18.6.1  perseant  * without prior written authorization from Intel.
     79  1.18.6.1  perseant  *
     80  1.18.6.1  perseant  * 4. Disclaimer and Export Compliance
     81  1.18.6.1  perseant  *
     82  1.18.6.1  perseant  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
     83  1.18.6.1  perseant  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
     84  1.18.6.1  perseant  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
     85  1.18.6.1  perseant  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
     86  1.18.6.1  perseant  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
     87  1.18.6.1  perseant  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
     88  1.18.6.1  perseant  * PARTICULAR PURPOSE.
     89  1.18.6.1  perseant  *
     90  1.18.6.1  perseant  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
     91  1.18.6.1  perseant  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
     92  1.18.6.1  perseant  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
     93  1.18.6.1  perseant  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
     94  1.18.6.1  perseant  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
     95  1.18.6.1  perseant  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
     96  1.18.6.1  perseant  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
     97  1.18.6.1  perseant  * LIMITED REMEDY.
     98  1.18.6.1  perseant  *
     99  1.18.6.1  perseant  * 4.3. Licensee shall not export, either directly or indirectly, any of this
    100  1.18.6.1  perseant  * software or system incorporating such software without first obtaining any
    101  1.18.6.1  perseant  * required license or other approval from the U. S. Department of Commerce or
    102  1.18.6.1  perseant  * any other agency or department of the United States Government. In the
    103  1.18.6.1  perseant  * event Licensee exports any such software from the United States or
    104  1.18.6.1  perseant  * re-exports any such software from a foreign destination, Licensee shall
    105  1.18.6.1  perseant  * ensure that the distribution and export/re-export of the software is in
    106  1.18.6.1  perseant  * compliance with all laws, regulations, orders, or other restrictions of the
    107  1.18.6.1  perseant  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
    108  1.18.6.1  perseant  * any of its subsidiaries will export/re-export any technical data, process,
    109  1.18.6.1  perseant  * software, or service, directly or indirectly, to any country for which the
    110  1.18.6.1  perseant  * United States government or any agency thereof requires an export license,
    111  1.18.6.1  perseant  * other governmental approval, or letter of assurance, without first obtaining
    112  1.18.6.1  perseant  * such license, approval or letter.
    113  1.18.6.1  perseant  *
    114  1.18.6.1  perseant  *****************************************************************************
    115  1.18.6.1  perseant  *
    116  1.18.6.1  perseant  * Alternatively, you may choose to be licensed under the terms of the
    117  1.18.6.1  perseant  * following license:
    118  1.18.6.1  perseant  *
    119       1.2  christos  * Redistribution and use in source and binary forms, with or without
    120       1.2  christos  * modification, are permitted provided that the following conditions
    121       1.2  christos  * are met:
    122       1.2  christos  * 1. Redistributions of source code must retain the above copyright
    123       1.2  christos  *    notice, this list of conditions, and the following disclaimer,
    124       1.2  christos  *    without modification.
    125       1.2  christos  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
    126       1.2  christos  *    substantially similar to the "NO WARRANTY" disclaimer below
    127       1.2  christos  *    ("Disclaimer") and any redistribution must be conditioned upon
    128       1.2  christos  *    including a substantially similar Disclaimer requirement for further
    129       1.2  christos  *    binary redistribution.
    130       1.2  christos  * 3. Neither the names of the above-listed copyright holders nor the names
    131       1.2  christos  *    of any contributors may be used to endorse or promote products derived
    132       1.2  christos  *    from this software without specific prior written permission.
    133       1.2  christos  *
    134       1.2  christos  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    135       1.2  christos  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    136      1.15  christos  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    137       1.2  christos  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    138  1.18.6.1  perseant  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    139  1.18.6.1  perseant  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    140  1.18.6.1  perseant  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    141  1.18.6.1  perseant  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    142  1.18.6.1  perseant  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    143  1.18.6.1  perseant  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    144  1.18.6.1  perseant  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    145  1.18.6.1  perseant  *
    146  1.18.6.1  perseant  * Alternatively, you may choose to be licensed under the terms of the
    147  1.18.6.1  perseant  * GNU General Public License ("GPL") version 2 as published by the Free
    148  1.18.6.1  perseant  * Software Foundation.
    149  1.18.6.1  perseant  *
    150  1.18.6.1  perseant  *****************************************************************************/
    151       1.1    jruoho 
    152       1.7  christos /* Compile routines for the basic ACPI tables */
    153       1.1    jruoho 
    154       1.1    jruoho #include "aslcompiler.h"
    155       1.1    jruoho 
    156       1.1    jruoho #define _COMPONENT          DT_COMPILER
    157       1.1    jruoho         ACPI_MODULE_NAME    ("dttable")
    158       1.1    jruoho 
    159       1.1    jruoho 
    160       1.1    jruoho /******************************************************************************
    161       1.1    jruoho  *
    162       1.1    jruoho  * FUNCTION:    DtCompileRsdp
    163       1.1    jruoho  *
    164       1.1    jruoho  * PARAMETERS:  PFieldList          - Current field list pointer
    165       1.1    jruoho  *
    166       1.1    jruoho  * RETURN:      Status
    167       1.1    jruoho  *
    168       1.1    jruoho  * DESCRIPTION: Compile RSDP.
    169       1.1    jruoho  *
    170       1.1    jruoho  *****************************************************************************/
    171       1.1    jruoho 
    172       1.1    jruoho ACPI_STATUS
    173       1.1    jruoho DtCompileRsdp (
    174       1.1    jruoho     DT_FIELD                **PFieldList)
    175       1.1    jruoho {
    176       1.1    jruoho     DT_SUBTABLE             *Subtable;
    177       1.2  christos     ACPI_TABLE_RSDP         *Rsdp;
    178       1.2  christos     ACPI_RSDP_EXTENSION     *RsdpExtension;
    179       1.1    jruoho     ACPI_STATUS             Status;
    180       1.1    jruoho 
    181       1.1    jruoho 
    182       1.2  christos     /* Compile the "common" RSDP (ACPI 1.0) */
    183       1.2  christos 
    184       1.1    jruoho     Status = DtCompileTable (PFieldList, AcpiDmTableInfoRsdp1,
    185      1.12  christos         &AslGbl_RootTable);
    186       1.1    jruoho     if (ACPI_FAILURE (Status))
    187       1.1    jruoho     {
    188       1.1    jruoho         return (Status);
    189       1.1    jruoho     }
    190       1.1    jruoho 
    191      1.12  christos     Rsdp = ACPI_CAST_PTR (ACPI_TABLE_RSDP, AslGbl_RootTable->Buffer);
    192       1.2  christos     DtSetTableChecksum (&Rsdp->Checksum);
    193       1.1    jruoho 
    194       1.2  christos     if (Rsdp->Revision > 0)
    195       1.1    jruoho     {
    196       1.2  christos         /* Compile the "extended" part of the RSDP as a subtable */
    197       1.2  christos 
    198       1.1    jruoho         Status = DtCompileTable (PFieldList, AcpiDmTableInfoRsdp2,
    199      1.11  christos             &Subtable);
    200       1.1    jruoho         if (ACPI_FAILURE (Status))
    201       1.1    jruoho         {
    202       1.1    jruoho             return (Status);
    203       1.1    jruoho         }
    204       1.1    jruoho 
    205      1.12  christos         DtInsertSubtable (AslGbl_RootTable, Subtable);
    206       1.2  christos 
    207       1.2  christos         /* Set length and extended checksum for entire RSDP */
    208       1.2  christos 
    209       1.2  christos         RsdpExtension = ACPI_CAST_PTR (ACPI_RSDP_EXTENSION, Subtable->Buffer);
    210      1.12  christos         RsdpExtension->Length = AslGbl_RootTable->Length + Subtable->Length;
    211       1.2  christos         DtSetTableChecksum (&RsdpExtension->ExtendedChecksum);
    212       1.1    jruoho     }
    213       1.1    jruoho 
    214       1.1    jruoho     return (AE_OK);
    215       1.1    jruoho }
    216       1.1    jruoho 
    217       1.1    jruoho 
    218       1.1    jruoho /******************************************************************************
    219       1.1    jruoho  *
    220       1.7  christos  * FUNCTION:    DtCompileFadt
    221       1.1    jruoho  *
    222       1.1    jruoho  * PARAMETERS:  List                - Current field list pointer
    223       1.1    jruoho  *
    224       1.1    jruoho  * RETURN:      Status
    225       1.1    jruoho  *
    226      1.16  christos  * DESCRIPTION: Compile FADT (signature FACP).
    227       1.1    jruoho  *
    228       1.1    jruoho  *****************************************************************************/
    229       1.1    jruoho 
    230      1.16  christos #define ACPI_XDSDT_LOCATION_IN_LIST         11
    231      1.16  christos 
    232       1.1    jruoho ACPI_STATUS
    233       1.7  christos DtCompileFadt (
    234       1.1    jruoho     void                    **List)
    235       1.1    jruoho {
    236       1.7  christos     ACPI_STATUS             Status;
    237       1.1    jruoho     DT_SUBTABLE             *Subtable;
    238       1.1    jruoho     DT_SUBTABLE             *ParentTable;
    239       1.1    jruoho     DT_FIELD                **PFieldList = (DT_FIELD **) List;
    240      1.16  christos     DT_FIELD                *DsdtFieldList;
    241      1.16  christos     ACPI_TABLE_FADT         *Table;
    242       1.9  christos     UINT8                   Revision;
    243      1.16  christos     UINT32                  DsdtAddress;
    244      1.16  christos     UINT64                  X_DsdtAddress;
    245      1.16  christos     UINT32                  i;
    246      1.16  christos 
    247       1.1    jruoho 
    248      1.16  christos     /* Get the table revision and 32-bit DSDT Address definition */
    249       1.1    jruoho 
    250      1.16  christos     DsdtFieldList = (*PFieldList)->Next;
    251       1.7  christos     Status = DtCompileTable (PFieldList, AcpiDmTableInfoFadt1,
    252      1.11  christos         &Subtable);
    253       1.7  christos     if (ACPI_FAILURE (Status))
    254       1.1    jruoho     {
    255       1.7  christos         return (Status);
    256       1.7  christos     }
    257       1.1    jruoho 
    258       1.7  christos     ParentTable = DtPeekSubtable ();
    259       1.7  christos     DtInsertSubtable (ParentTable, Subtable);
    260       1.1    jruoho 
    261      1.16  christos     Table = ACPI_CAST_PTR (ACPI_TABLE_FADT, ParentTable->Buffer);
    262      1.16  christos     Revision = Table->Header.Revision;
    263      1.16  christos     DsdtAddress = Table->Dsdt;
    264      1.16  christos 
    265      1.16  christos     /* FADT version 1 has only 32-bit addresses - error if DSDT address is NULL */
    266      1.16  christos 
    267      1.16  christos     if ((Revision == 1) && (!DsdtAddress))
    268      1.16  christos     {
    269      1.16  christos         DtError (ASL_ERROR, ASL_MSG_ZERO_VALUE, DsdtFieldList, NULL);
    270      1.16  christos     }
    271       1.8  christos 
    272       1.9  christos     if (Revision == 2)
    273       1.8  christos     {
    274       1.9  christos         Status = DtCompileTable (PFieldList, AcpiDmTableInfoFadt2,
    275      1.11  christos             &Subtable);
    276       1.9  christos         if (ACPI_FAILURE (Status))
    277       1.9  christos         {
    278       1.9  christos             return (Status);
    279       1.9  christos         }
    280       1.8  christos 
    281       1.9  christos         DtInsertSubtable (ParentTable, Subtable);
    282       1.8  christos     }
    283      1.16  christos 
    284      1.16  christos     else if (Revision > 2)
    285       1.7  christos     {
    286      1.16  christos         /*
    287      1.16  christos          * Rev 3 and greater have 64-bit addresses (as well as 32-bit).
    288      1.16  christos          * Get the 64-bit DSDT (X_DSDT) Address definition. Note: This
    289      1.16  christos          * appears at field list offset 11 within AcpiDmTableInfoFadt3.
    290      1.16  christos          */
    291      1.16  christos         DsdtFieldList = *PFieldList;
    292      1.16  christos         for (i = 0; i < ACPI_XDSDT_LOCATION_IN_LIST; i++)
    293      1.16  christos         {
    294      1.16  christos             DsdtFieldList = DsdtFieldList->Next;
    295      1.16  christos             if (!DsdtFieldList)
    296      1.16  christos             {
    297      1.16  christos                 return (ASL_MSG_BAD_PARSE_TREE);
    298      1.16  christos             }
    299      1.16  christos         }
    300      1.16  christos 
    301       1.9  christos         Status = DtCompileTable (PFieldList, AcpiDmTableInfoFadt3,
    302      1.11  christos             &Subtable);
    303       1.9  christos         if (ACPI_FAILURE (Status))
    304       1.9  christos         {
    305       1.9  christos             return (Status);
    306       1.9  christos         }
    307       1.8  christos 
    308       1.9  christos         DtInsertSubtable (ParentTable, Subtable);
    309       1.8  christos 
    310      1.16  christos         Table = ACPI_CAST_PTR (ACPI_TABLE_FADT, ParentTable->Buffer);
    311      1.16  christos         X_DsdtAddress = Table->XDsdt;
    312      1.16  christos 
    313      1.16  christos         /*
    314      1.16  christos          * Error if both the 32-bit DSDT address and the
    315      1.16  christos          * 64-bit X_DSDT address are zero.
    316      1.16  christos          */
    317      1.16  christos         if ((!X_DsdtAddress) && (!DsdtAddress))
    318      1.16  christos         {
    319      1.16  christos             DtError (ASL_ERROR, ASL_MSG_TWO_ZERO_VALUES, DsdtFieldList, NULL);
    320      1.16  christos         }
    321      1.16  christos 
    322      1.16  christos         /* Fields specific to FADT Revision 5 (appended to previous) */
    323      1.16  christos 
    324       1.9  christos         if (Revision >= 5)
    325       1.9  christos         {
    326       1.9  christos             Status = DtCompileTable (PFieldList, AcpiDmTableInfoFadt5,
    327      1.11  christos                 &Subtable);
    328       1.9  christos             if (ACPI_FAILURE (Status))
    329       1.9  christos             {
    330       1.9  christos                 return (Status);
    331       1.9  christos             }
    332       1.8  christos 
    333       1.9  christos             DtInsertSubtable (ParentTable, Subtable);
    334       1.1    jruoho         }
    335       1.1    jruoho 
    336      1.16  christos         /* Fields specific to FADT Revision 6 (appended to previous) */
    337      1.16  christos 
    338       1.9  christos         if (Revision >= 6)
    339       1.9  christos         {
    340       1.9  christos             Status = DtCompileTable (PFieldList, AcpiDmTableInfoFadt6,
    341      1.11  christos                 &Subtable);
    342       1.9  christos             if (ACPI_FAILURE (Status))
    343       1.9  christos             {
    344       1.9  christos                 return (Status);
    345       1.9  christos             }
    346       1.8  christos 
    347       1.9  christos             DtInsertSubtable (ParentTable, Subtable);
    348       1.2  christos         }
    349       1.2  christos     }
    350       1.2  christos 
    351       1.7  christos     return (AE_OK);
    352       1.2  christos }
    353       1.2  christos 
    354       1.2  christos 
    355       1.2  christos /******************************************************************************
    356       1.2  christos  *
    357       1.7  christos  * FUNCTION:    DtCompileFacs
    358       1.2  christos  *
    359       1.7  christos  * PARAMETERS:  PFieldList          - Current field list pointer
    360       1.2  christos  *
    361       1.2  christos  * RETURN:      Status
    362       1.2  christos  *
    363       1.7  christos  * DESCRIPTION: Compile FACS.
    364       1.2  christos  *
    365       1.2  christos  *****************************************************************************/
    366       1.2  christos 
    367       1.2  christos ACPI_STATUS
    368       1.7  christos DtCompileFacs (
    369       1.7  christos     DT_FIELD                **PFieldList)
    370       1.2  christos {
    371       1.7  christos     DT_SUBTABLE             *Subtable;
    372       1.7  christos     UINT8                   *ReservedBuffer;
    373       1.2  christos     ACPI_STATUS             Status;
    374       1.7  christos     UINT32                  ReservedSize;
    375       1.2  christos 
    376       1.2  christos 
    377       1.7  christos     Status = DtCompileTable (PFieldList, AcpiDmTableInfoFacs,
    378      1.12  christos         &AslGbl_RootTable);
    379       1.2  christos     if (ACPI_FAILURE (Status))
    380       1.2  christos     {
    381       1.2  christos         return (Status);
    382       1.2  christos     }
    383       1.2  christos 
    384       1.7  christos     /* Large FACS reserved area at the end of the table */
    385       1.2  christos 
    386       1.7  christos     ReservedSize = (UINT32) sizeof (((ACPI_TABLE_FACS *) NULL)->Reserved1);
    387       1.7  christos     ReservedBuffer = UtLocalCalloc (ReservedSize);
    388       1.2  christos 
    389       1.7  christos     DtCreateSubtable (ReservedBuffer, ReservedSize, &Subtable);
    390       1.2  christos 
    391       1.7  christos     ACPI_FREE (ReservedBuffer);
    392      1.12  christos     DtInsertSubtable (AslGbl_RootTable, Subtable);
    393       1.2  christos     return (AE_OK);
    394       1.2  christos }
    395