arch/all-pc/acpica/source/compiler/dtcompile.c

   1 /******************************************************************************
   2  *
   3  * Module Name: dtcompile.c - Front-end for data table compiler
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2013, 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 #define __DTCOMPILE_C__
  45 #define _DECLARE_DT_GLOBALS
  46
  47 #include "aslcompiler.h"
  48 #include "dtcompiler.h"
  49
  50 #define _COMPONENT          DT_COMPILER
  51         ACPI_MODULE_NAME    ("dtcompile")
  52
  53 static char                 VersionString[9];
  54
  55
  56 /* Local prototypes */
  57
  58 static ACPI_STATUS
  59 DtInitialize (
  60     void);
  61
  62 static ACPI_STATUS
  63 DtCompileDataTable (
  64     DT_FIELD                **Field);
  65
  66 static void
  67 DtInsertCompilerIds (
  68     DT_FIELD                *FieldList);
  69
  70
  71 /******************************************************************************
  72  *
  73  * FUNCTION:    DtDoCompile
  74  *
  75  * PARAMETERS:  None
  76  *
  77  * RETURN:      Status
  78  *
  79  * DESCRIPTION: Main entry point for the data table compiler.
  80  *
  81  * Note: Assumes Gbl_Files[ASL_FILE_INPUT] is initialized and the file is
  82  *          open at seek offset zero.
  83  *
  84  *****************************************************************************/
  85
  86 ACPI_STATUS
  87 DtDoCompile (
  88     void)
  89 {
  90     ACPI_STATUS             Status;
  91     UINT8                   Event;
  92     DT_FIELD                *FieldList;
  93
  94
  95     /* Initialize globals */
  96
  97     Status = DtInitialize ();
  98     if (ACPI_FAILURE (Status))
  99     {
 100         printf ("Error during compiler initialization, 0x%X\n", Status);
 101         return (Status);
 102     }
 103
 104     /* Preprocessor */
 105
 106     Event = UtBeginEvent ("Preprocess input file");
 107     PrDoPreprocess ();
 108     UtEndEvent (Event);
 109
 110     if (Gbl_PreprocessOnly)
 111     {
 112         return (AE_OK);
 113     }
 114
 115     /*
 116      * Scan the input file (file is already open) and
 117      * build the parse tree
 118      */
 119     Event = UtBeginEvent ("Scan and parse input file");
 120     FieldList = DtScanFile (Gbl_Files[ASL_FILE_INPUT].Handle);
 121     UtEndEvent (Event);
 122
 123     /* Did the parse tree get successfully constructed? */
 124
 125     if (!FieldList)
 126     {
 127         /* TBD: temporary error message. Msgs should come from function above */
 128
 129         DtError (ASL_ERROR, ASL_MSG_SYNTAX, NULL,
 130             "Input file does not appear to be an ASL or data table source file");
 131
 132         Status = AE_ERROR;
 133         goto CleanupAndExit;
 134     }
 135
 136     Event = UtBeginEvent ("Compile parse tree");
 137
 138     /*
 139      * Compile the parse tree
 140      */
 141     Status = DtCompileDataTable (&FieldList);
 142     UtEndEvent (Event);
 143
 144     DtFreeFieldList ();
 145
 146     if (ACPI_FAILURE (Status))
 147     {
 148         /* TBD: temporary error message. Msgs should come from function above */
 149
 150         DtError (ASL_ERROR, ASL_MSG_SYNTAX, NULL,
 151             "Could not compile input file");
 152
 153         goto CleanupAndExit;
 154     }
 155
 156     /* Create/open the binary output file */
 157
 158     Gbl_Files[ASL_FILE_AML_OUTPUT].Filename = NULL;
 159     Status = FlOpenAmlOutputFile (Gbl_OutputFilenamePrefix);
 160     if (ACPI_FAILURE (Status))
 161     {
 162         goto CleanupAndExit;
 163     }
 164
 165     /* Write the binary, then the optional hex file */
 166
 167     DtOutputBinary (Gbl_RootTable);
 168     HxDoHexOutput ();
 169     DtWriteTableToListing ();
 170
 171 CleanupAndExit:
 172
 173     CmCleanupAndExit ();
 174     return (Status);
 175 }
 176
 177
 178 /******************************************************************************
 179  *
 180  * FUNCTION:    DtInitialize
 181  *
 182  * PARAMETERS:  None
 183  *
 184  * RETURN:      Status
 185  *
 186  * DESCRIPTION: Initialize data table compiler globals. Enables multiple
 187  *              compiles per invocation.
 188  *
 189  *****************************************************************************/
 190
 191 static ACPI_STATUS
 192 DtInitialize (
 193     void)
 194 {
 195     ACPI_STATUS             Status;
 196
 197
 198     Status = AcpiOsInitialize ();
 199     if (ACPI_FAILURE (Status))
 200     {
 201         return (Status);
 202     }
 203
 204     Status = AcpiUtInitGlobals ();
 205     if (ACPI_FAILURE (Status))
 206     {
 207         return (Status);
 208     }
 209
 210     Gbl_FieldList = NULL;
 211     Gbl_RootTable = NULL;
 212     Gbl_SubtableStack = NULL;
 213
 214     sprintf (VersionString, "%X", (UINT32) ACPI_CA_VERSION);
 215     return (AE_OK);
 216 }
 217
 218
 219 /******************************************************************************
 220  *
 221  * FUNCTION:    DtInsertCompilerIds
 222  *
 223  * PARAMETERS:  FieldList           - Current field list pointer
 224  *
 225  * RETURN:      None
 226  *
 227  * DESCRIPTION: Insert the IDs (Name, Version) of the current compiler into
 228  *              the original ACPI table header.
 229  *
 230  *****************************************************************************/
 231
 232 static void
 233 DtInsertCompilerIds (
 234     DT_FIELD                *FieldList)
 235 {
 236     DT_FIELD                *Next;
 237     UINT32                  i;
 238
 239
 240     /*
 241      * Don't insert current compiler ID if requested. Used for compiler
 242      * debug/validation only.
 243      */
 244     if (Gbl_UseOriginalCompilerId)
 245     {
 246         return;
 247     }
 248
 249     /* Walk to the Compiler fields at the end of the header */
 250
 251     Next = FieldList;
 252     for (i = 0; i < 7; i++)
 253     {
 254         Next = Next->Next;
 255     }
 256
 257     Next->Value = ASL_CREATOR_ID;
 258     Next->Flags = DT_FIELD_NOT_ALLOCATED;
 259
 260     Next = Next->Next;
 261     Next->Value = VersionString;
 262     Next->Flags = DT_FIELD_NOT_ALLOCATED;
 263 }
 264
 265
 266 /******************************************************************************
 267  *
 268  * FUNCTION:    DtCompileDataTable
 269  *
 270  * PARAMETERS:  FieldList           - Current field list pointer
 271  *
 272  * RETURN:      Status
 273  *
 274  * DESCRIPTION: Entry point to compile one data table
 275  *
 276  *****************************************************************************/
 277
 278 static ACPI_STATUS
 279 DtCompileDataTable (
 280     DT_FIELD                **FieldList)
 281 {
 282     ACPI_DMTABLE_DATA       *TableData;
 283     DT_SUBTABLE             *Subtable;
 284     char                    *Signature;
 285     ACPI_TABLE_HEADER       *AcpiTableHeader;
 286     ACPI_STATUS             Status;
 287     DT_FIELD                *RootField = *FieldList;
 288
 289
 290     /* Verify that we at least have a table signature and save it */
 291
 292     Signature = DtGetFieldValue (*FieldList);
 293     if (!Signature)
 294     {
 295         sprintf (MsgBuffer, "Expected \"%s\"", "Signature");
 296         DtNameError (ASL_ERROR, ASL_MSG_INVALID_FIELD_NAME,
 297             *FieldList, MsgBuffer);
 298         return (AE_ERROR);
 299     }
 300
 301     Gbl_Signature = UtLocalCalloc (ACPI_STRLEN (Signature) + 1);
 302     strcpy (Gbl_Signature, Signature);
 303
 304     /*
 305      * Handle tables that don't use the common ACPI table header structure.
 306      * Currently, these are the FACS and RSDP. Also check for an OEMx table,
 307      * these tables have user-defined contents.
 308      */
 309     if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_FACS))
 310     {
 311         Status = DtCompileFacs (FieldList);
 312         if (ACPI_FAILURE (Status))
 313         {
 314             return (Status);
 315         }
 316
 317         DtSetTableLength ();
 318         return (Status);
 319     }
 320     else if (ACPI_VALIDATE_RSDP_SIG (Signature))
 321     {
 322         Status = DtCompileRsdp (FieldList);
 323         return (Status);
 324     }
 325     else if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_S3PT))
 326     {
 327         Status = DtCompileS3pt (FieldList);
 328         if (ACPI_FAILURE (Status))
 329         {
 330             return (Status);
 331         }
 332
 333         DtSetTableLength ();
 334         return (Status);
 335     }
 336
 337     /*
 338      * All other tables must use the common ACPI table header. Insert the
 339      * current iASL IDs (name, version), and compile the header now.
 340      */
 341     DtInsertCompilerIds (*FieldList);
 342
 343     Status = DtCompileTable (FieldList, AcpiDmTableInfoHeader,
 344                 &Gbl_RootTable, TRUE);
 345     if (ACPI_FAILURE (Status))
 346     {
 347         return (Status);
 348     }
 349
 350     DtPushSubtable (Gbl_RootTable);
 351
 352     /* Validate the signature via the ACPI table list */
 353
 354     TableData = AcpiDmGetTableData (Signature);
 355     if (!TableData || Gbl_CompileGeneric)
 356     {
 357         DtCompileGeneric ((void **) FieldList);
 358         goto FinishHeader;
 359     }
 360
 361     /* Dispatch to per-table compile */
 362
 363     if (TableData->CmTableHandler)
 364     {
 365         /* Complex table, has a handler */
 366
 367         Status = TableData->CmTableHandler ((void **) FieldList);
 368         if (ACPI_FAILURE (Status))
 369         {
 370             return (Status);
 371         }
 372     }
 373     else if (TableData->TableInfo)
 374     {
 375         /* Simple table, just walk the info table */
 376
 377         Subtable = NULL;
 378         Status = DtCompileTable (FieldList, TableData->TableInfo,
 379                     &Subtable, TRUE);
 380         if (ACPI_FAILURE (Status))
 381         {
 382             return (Status);
 383         }
 384
 385         DtInsertSubtable (Gbl_RootTable, Subtable);
 386         DtPopSubtable ();
 387     }
 388     else
 389     {
 390         DtFatal (ASL_MSG_COMPILER_INTERNAL, *FieldList,
 391             "Missing table dispatch info");
 392         return (AE_ERROR);
 393     }
 394
 395 FinishHeader:
 396
 397     /* Set the final table length and then the checksum */
 398
 399     DtSetTableLength ();
 400     AcpiTableHeader = ACPI_CAST_PTR (
 401         ACPI_TABLE_HEADER, Gbl_RootTable->Buffer);
 402     DtSetTableChecksum (&AcpiTableHeader->Checksum);
 403
 404     DtDumpFieldList (RootField);
 405     DtDumpSubtableList ();
 406     return (AE_OK);
 407 }
 408
 409
 410 /******************************************************************************
 411  *
 412  * FUNCTION:    DtCompileTable
 413  *
 414  * PARAMETERS:  Field               - Current field list pointer
 415  *              Info                - Info table for this ACPI table
 416  *              RetSubtable         - Compile result of table
 417  *              Required            - If this subtable must exist
 418  *
 419  * RETURN:      Status
 420  *
 421  * DESCRIPTION: Compile a subtable
 422  *
 423  *****************************************************************************/
 424
 425 ACPI_STATUS
 426 DtCompileTable (
 427     DT_FIELD                **Field,
 428     ACPI_DMTABLE_INFO       *Info,
 429     DT_SUBTABLE             **RetSubtable,
 430     BOOLEAN                 Required)
 431 {
 432     DT_FIELD                *LocalField;
 433     UINT32                  Length;
 434     DT_SUBTABLE             *Subtable;
 435     DT_SUBTABLE             *InlineSubtable;
 436     UINT32                  FieldLength = 0;
 437     UINT8                   FieldType;
 438     UINT8                   *Buffer;
 439     UINT8                   *FlagBuffer = NULL;
 440     UINT32                  CurrentFlagByteOffset = 0;
 441     ACPI_STATUS             Status;
 442
 443
 444     if (!Field || !*Field)
 445     {
 446         return (AE_BAD_PARAMETER);
 447     }
 448
 449     Length = DtGetSubtableLength (*Field, Info);
 450     if (Length == ASL_EOF)
 451     {
 452         return (AE_ERROR);
 453     }
 454
 455     Subtable = UtLocalCalloc (sizeof (DT_SUBTABLE));
 456
 457     if (Length > 0)
 458     {
 459         Subtable->Buffer = UtLocalCalloc (Length);
 460     }
 461     Subtable->Length = Length;
 462     Subtable->TotalLength = Length;
 463     Buffer = Subtable->Buffer;
 464
 465     LocalField = *Field;
 466
 467     /*
 468      * Main loop walks the info table for this ACPI table or subtable
 469      */
 470     for (; Info->Name; Info++)
 471     {
 472         if (Info->Opcode == ACPI_DMT_EXTRA_TEXT)
 473         {
 474             continue;
 475         }
 476
 477         if (!LocalField)
 478         {
 479             sprintf (MsgBuffer, "Found NULL field - Field name \"%s\" needed",
 480                 Info->Name);
 481             DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer);
 482             Status = AE_BAD_DATA;
 483             goto Error;
 484         }
 485
 486         /* Maintain table offsets */
 487
 488         LocalField->TableOffset = Gbl_CurrentTableOffset;
 489         FieldLength = DtGetFieldLength (LocalField, Info);
 490         Gbl_CurrentTableOffset += FieldLength;
 491
 492         FieldType = DtGetFieldType (Info);
 493         Gbl_InputFieldCount++;
 494
 495         switch (FieldType)
 496         {
 497         case DT_FIELD_TYPE_FLAGS_INTEGER:
 498             /*
 499              * Start of the definition of a flags field.
 500              * This master flags integer starts at value zero, in preparation
 501              * to compile and insert the flag fields from the individual bits
 502              */
 503             LocalField = LocalField->Next;
 504             *Field = LocalField;
 505
 506             FlagBuffer = Buffer;
 507             CurrentFlagByteOffset = Info->Offset;
 508             break;
 509
 510         case DT_FIELD_TYPE_FLAG:
 511
 512             /* Individual Flag field, can be multiple bits */
 513
 514             if (FlagBuffer)
 515             {
 516                 /*
 517                  * We must increment the FlagBuffer when we have crossed
 518                  * into the next flags byte within the flags field
 519                  * of type DT_FIELD_TYPE_FLAGS_INTEGER.
 520                  */
 521                 FlagBuffer += (Info->Offset - CurrentFlagByteOffset);
 522                 CurrentFlagByteOffset = Info->Offset;
 523
 524                 DtCompileFlag (FlagBuffer, LocalField, Info);
 525             }
 526             else
 527             {
 528                 /* TBD - this is an internal error */
 529             }
 530
 531             LocalField = LocalField->Next;
 532             *Field = LocalField;
 533             break;
 534
 535         case DT_FIELD_TYPE_INLINE_SUBTABLE:
 536             /*
 537              * Recursion (one level max): compile GAS (Generic Address)
 538              * or Notify in-line subtable
 539              */
 540             *Field = LocalField;
 541
 542             if (Info->Opcode == ACPI_DMT_GAS)
 543             {
 544                 Status = DtCompileTable (Field, AcpiDmTableInfoGas,
 545                     &InlineSubtable, TRUE);
 546             }
 547             else
 548             {
 549                 Status = DtCompileTable (Field, AcpiDmTableInfoHestNotify,
 550                     &InlineSubtable, TRUE);
 551             }
 552
 553             if (ACPI_FAILURE (Status))
 554             {
 555                 goto Error;
 556             }
 557
 558             DtSetSubtableLength (InlineSubtable);
 559
 560             ACPI_MEMCPY (Buffer, InlineSubtable->Buffer, FieldLength);
 561             ACPI_FREE (InlineSubtable->Buffer);
 562             ACPI_FREE (InlineSubtable);
 563             LocalField = *Field;
 564             break;
 565
 566         case DT_FIELD_TYPE_LABEL:
 567
 568             DtWriteFieldToListing (Buffer, LocalField, 0);
 569             LocalField = LocalField->Next;
 570             break;
 571
 572         default:
 573
 574             /* Normal case for most field types (Integer, String, etc.) */
 575
 576             DtCompileOneField (Buffer, LocalField,
 577                 FieldLength, FieldType, Info->Flags);
 578
 579             DtWriteFieldToListing (Buffer, LocalField, FieldLength);
 580             LocalField = LocalField->Next;
 581
 582             if (Info->Flags & DT_LENGTH)
 583             {
 584                 /* Field is an Integer that will contain a subtable length */
 585
 586                 Subtable->LengthField = Buffer;
 587                 Subtable->SizeOfLengthField = FieldLength;
 588             }
 589
 590             break;
 591         }
 592
 593         Buffer += FieldLength;
 594     }
 595
 596     *Field = LocalField;
 597     *RetSubtable = Subtable;
 598     return (AE_OK);
 599
 600 Error:
 601     ACPI_FREE (Subtable->Buffer);
 602     ACPI_FREE (Subtable);
 603     return (Status);
 604 }