| /****************************************************************************** |
| * |
| * Module Name: aeinitfile - Support for optional initialization file |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2020, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "aecommon.h" |
| #include "acdispat.h" |
| |
| #define _COMPONENT ACPI_TOOLS |
| ACPI_MODULE_NAME ("aeinitfile") |
| |
| |
| /* Local prototypes */ |
| |
| static void |
| AeEnterInitFileEntry ( |
| INIT_FILE_ENTRY InitEntry, |
| ACPI_WALK_STATE *WalkState); |
| |
| |
| #define AE_FILE_BUFFER_SIZE 512 |
| |
| static char LineBuffer[AE_FILE_BUFFER_SIZE]; |
| static char NameBuffer[AE_FILE_BUFFER_SIZE]; |
| static char ValueBuffer[AE_FILE_BUFFER_SIZE]; |
| static FILE *InitFile; |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AeOpenInitializationFile |
| * |
| * PARAMETERS: Filename - Path to the init file |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Open the initialization file for the -fi option |
| * |
| *****************************************************************************/ |
| |
| int |
| AeOpenInitializationFile ( |
| char *Filename) |
| { |
| |
| InitFile = fopen (Filename, "r"); |
| if (!InitFile) |
| { |
| fprintf (stderr, |
| "Could not open initialization file: %s\n", Filename); |
| return (-1); |
| } |
| |
| AcpiOsPrintf ("Opened initialization file [%s]\n", Filename); |
| return (0); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AeProcessInitFile |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Read the initialization file and perform all namespace |
| * initializations. AcpiGbl_InitEntries will be used for region |
| * field initialization. |
| * |
| * NOTE: The format of the file is multiple lines, each of format: |
| * <ACPI-pathname> <Integer Value> |
| * |
| *****************************************************************************/ |
| |
| void |
| AeProcessInitFile( |
| void) |
| { |
| ACPI_WALK_STATE *WalkState; |
| UINT64 idx; |
| ACPI_STATUS Status; |
| char *Token; |
| char *ObjectBuffer; |
| char *TempNameBuffer; |
| ACPI_OBJECT_TYPE Type; |
| ACPI_OBJECT TempObject; |
| |
| |
| if (!InitFile) |
| { |
| return; |
| } |
| |
| /* Create needed objects to be reused for each init entry */ |
| |
| WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); |
| NameBuffer[0] = '\\'; |
| |
| while (fgets (LineBuffer, AE_FILE_BUFFER_SIZE, InitFile) != NULL) |
| { |
| ++AcpiGbl_InitFileLineCount; |
| } |
| rewind (InitFile); |
| |
| AcpiGbl_InitEntries = |
| AcpiOsAllocate (sizeof (INIT_FILE_ENTRY) * AcpiGbl_InitFileLineCount); |
| for (idx = 0; fgets (LineBuffer, AE_FILE_BUFFER_SIZE, InitFile); ++idx) |
| { |
| |
| TempNameBuffer = AcpiDbGetNextToken (LineBuffer, &Token, &Type); |
| if (LineBuffer[0] == '\\') |
| { |
| strcpy (NameBuffer, TempNameBuffer); |
| } |
| else |
| { |
| /* Add a root prefix if not present in the string */ |
| |
| strcpy (NameBuffer + 1, TempNameBuffer); |
| } |
| |
| AcpiGbl_InitEntries[idx].Name = |
| AcpiOsAllocateZeroed (strnlen (NameBuffer, AE_FILE_BUFFER_SIZE) + 1); |
| |
| strcpy (AcpiGbl_InitEntries[idx].Name, NameBuffer); |
| |
| ObjectBuffer = AcpiDbGetNextToken (Token, &Token, &Type); |
| |
| if (Type == ACPI_TYPE_FIELD_UNIT) |
| { |
| Status = AcpiDbConvertToObject (ACPI_TYPE_BUFFER, ObjectBuffer, |
| &TempObject); |
| } |
| else |
| { |
| Status = AcpiDbConvertToObject (Type, ObjectBuffer, &TempObject); |
| } |
| |
| Status = AcpiUtCopyEobjectToIobject (&TempObject, |
| &AcpiGbl_InitEntries[idx].ObjDesc); |
| |
| if (Type == ACPI_TYPE_BUFFER || Type == ACPI_TYPE_FIELD_UNIT) |
| { |
| ACPI_FREE (TempObject.Buffer.Pointer); |
| } |
| |
| if (ACPI_FAILURE (Status)) |
| { |
| AcpiOsPrintf ("%s %s\n", ValueBuffer, |
| AcpiFormatException (Status)); |
| goto CleanupAndExit; |
| } |
| |
| /* |
| * Special case for field units. Field units are dependent on the |
| * parent region. This parent region has yet to be created so defer the |
| * initialization until the dispatcher. For all other types, initialize |
| * the namespace node with the value found in the init file. |
| */ |
| if (Type != ACPI_TYPE_FIELD_UNIT) |
| { |
| AeEnterInitFileEntry (AcpiGbl_InitEntries[idx], WalkState); |
| } |
| } |
| |
| /* Cleanup */ |
| |
| CleanupAndExit: |
| fclose (InitFile); |
| AcpiDsDeleteWalkState (WalkState); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AeInitFileEntry |
| * |
| * PARAMETERS: InitEntry - Entry of the init file |
| * WalkState - Used for the Store operation |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Perform initialization of a single namespace object |
| * |
| * Note: namespace of objects are limited to integers and region |
| * fields units of 8 bytes at this time. |
| * |
| *****************************************************************************/ |
| |
| static void |
| AeEnterInitFileEntry ( |
| INIT_FILE_ENTRY InitEntry, |
| ACPI_WALK_STATE *WalkState) |
| { |
| char *Pathname = InitEntry.Name; |
| ACPI_OPERAND_OBJECT *ObjDesc = InitEntry.ObjDesc; |
| ACPI_NAMESPACE_NODE *NewNode; |
| ACPI_STATUS Status; |
| |
| |
| Status = AcpiNsLookup (NULL, Pathname, ObjDesc->Common.Type, |
| ACPI_IMODE_LOAD_PASS2, ACPI_NS_ERROR_IF_FOUND | ACPI_NS_NO_UPSEARCH | |
| ACPI_NS_EARLY_INIT, NULL, &NewNode); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "While creating name from namespace initialization file: %s", |
| Pathname)); |
| return; |
| } |
| |
| /* Store pointer to value descriptor in the Node */ |
| |
| Status = AcpiNsAttachObject (NewNode, ObjDesc, |
| ObjDesc->Common.Type); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "While attaching object to node from namespace initialization file: %s", |
| Pathname)); |
| return; |
| } |
| |
| /* Remove local reference to the object */ |
| |
| AcpiUtRemoveReference (ObjDesc); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AeLookupInitFileEntry |
| * |
| * PARAMETERS: Pathname - AML namepath in external format |
| * ValueString - value of the namepath if it exitst |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Search the init file for a particular name and its value. |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AeLookupInitFileEntry ( |
| char *Pathname, |
| ACPI_OPERAND_OBJECT **ObjDesc) |
| { |
| UINT32 i; |
| |
| if (!AcpiGbl_InitEntries) |
| { |
| return AE_NOT_FOUND; |
| } |
| |
| for (i = 0; i < AcpiGbl_InitFileLineCount; ++i) |
| { |
| if (!strcmp(AcpiGbl_InitEntries[i].Name, Pathname)) |
| { |
| *ObjDesc = AcpiGbl_InitEntries[i].ObjDesc; |
| return AE_OK; |
| } |
| } |
| return AE_NOT_FOUND; |
| } |
