/****************************************************************************** * * Module Name: dtfield.c - Code generation for individual source fields * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * 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. * * 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 MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * 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 DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include "aslcompiler.h" #define _COMPONENT DT_COMPILER ACPI_MODULE_NAME ("dtfield") /* Local prototypes */ static void DtCompileString ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength); static void DtCompileUnicode ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength); static ACPI_STATUS DtCompileUuid ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength); static char * DtNormalizeBuffer ( char *Buffer, UINT32 *Count); /****************************************************************************** * * FUNCTION: DtCompileOneField * * PARAMETERS: Buffer - Output buffer * Field - Field to be compiled * ByteLength - Byte length of the field * Type - Field type * * RETURN: None * * DESCRIPTION: Compile a field value to binary * *****************************************************************************/ void DtCompileOneField ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength, UINT8 Type, UINT8 Flags) { ACPI_STATUS Status; switch (Type) { case DT_FIELD_TYPE_INTEGER: DtCompileInteger (Buffer, Field, ByteLength, Flags); break; case DT_FIELD_TYPE_STRING: DtCompileString (Buffer, Field, ByteLength); break; case DT_FIELD_TYPE_UUID: Status = DtCompileUuid (Buffer, Field, ByteLength); if (ACPI_SUCCESS (Status)) { break; } /* Fall through. */ case DT_FIELD_TYPE_BUFFER: DtCompileBuffer (Buffer, Field->Value, Field, ByteLength); break; case DT_FIELD_TYPE_UNICODE: DtCompileUnicode (Buffer, Field, ByteLength); break; case DT_FIELD_TYPE_DEVICE_PATH: break; default: DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid field type"); break; } } /****************************************************************************** * * FUNCTION: DtCompileString * * PARAMETERS: Buffer - Output buffer * Field - String to be copied to buffer * ByteLength - Maximum length of string * * RETURN: None * * DESCRIPTION: Copy string to the buffer * *****************************************************************************/ static void DtCompileString ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength) { UINT32 Length; Length = strlen (Field->Value); /* Check if the string is too long for the field */ if (Length > ByteLength) { sprintf (MsgBuffer, "Maximum %u characters", ByteLength); DtError (ASL_ERROR, ASL_MSG_STRING_LENGTH, Field, MsgBuffer); Length = ByteLength; } memcpy (Buffer, Field->Value, Length); } /****************************************************************************** * * FUNCTION: DtCompileUnicode * * PARAMETERS: Buffer - Output buffer * Field - String to be copied to buffer * ByteLength - Maximum length of string * * RETURN: None * * DESCRIPTION: Convert ASCII string to Unicode string * * Note: The Unicode string is 16 bits per character, no leading signature, * with a 16-bit terminating NULL. * *****************************************************************************/ static void DtCompileUnicode ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength) { UINT32 Count; UINT32 i; char *AsciiString; UINT16 *UnicodeString; AsciiString = Field->Value; UnicodeString = (UINT16 *) Buffer; Count = strlen (AsciiString) + 1; /* Convert to Unicode string (including null terminator) */ for (i = 0; i < Count; i++) { UnicodeString[i] = (UINT16) AsciiString[i]; } } /******************************************************************************* * * FUNCTION: DtCompileUuid * * PARAMETERS: Buffer - Output buffer * Field - String to be copied to buffer * ByteLength - Maximum length of string * * RETURN: None * * DESCRIPTION: Convert UUID string to 16-byte buffer * ******************************************************************************/ static ACPI_STATUS DtCompileUuid ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength) { char *InString; ACPI_STATUS Status; InString = Field->Value; Status = AuValidateUuid (InString); if (ACPI_FAILURE (Status)) { sprintf (MsgBuffer, "%s", Field->Value); DtNameError (ASL_ERROR, ASL_MSG_INVALID_UUID, Field, MsgBuffer); } else { AcpiUtConvertStringToUuid (InString, Buffer); } return (Status); } /****************************************************************************** * * FUNCTION: DtCompileInteger * * PARAMETERS: Buffer - Output buffer * Field - Field obj with Integer to be compiled * ByteLength - Byte length of the integer * Flags - Additional compile info * * RETURN: None * * DESCRIPTION: Compile an integer. Supports integer expressions with C-style * operators. * *****************************************************************************/ void DtCompileInteger ( UINT8 *Buffer, DT_FIELD *Field, UINT32 ByteLength, UINT8 Flags) { UINT64 Value; UINT64 MaxValue; ACPI_STATUS Status; /* Output buffer byte length must be in range 1-8 */ if ((ByteLength > 8) || (ByteLength == 0)) { DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid internal Byte length"); return; } /* Resolve integer expression to a single integer value */ Status = DtResolveIntegerExpression (Field, &Value); if (ACPI_FAILURE (Status)) { return; } /* * Ensure that reserved fields are set properly. Note: uses * the DT_NON_ZERO flag to indicate that the reserved value * must be exactly one. Otherwise, the value must be zero. * This is sufficient for now. */ /* TBD: Should use a flag rather than compare "Reserved" */ if (!strcmp (Field->Name, "Reserved")) { if (Flags & DT_NON_ZERO) { if (Value != 1) { DtError (ASL_WARNING, ASL_MSG_RESERVED_VALUE, Field, "Must be one, setting to one"); Value = 1; } } else if (Value != 0) { DtError (ASL_WARNING, ASL_MSG_RESERVED_VALUE, Field, "Must be zero, setting to zero"); Value = 0; } } /* Check if the value must be non-zero */ else if ((Flags & DT_NON_ZERO) && (Value == 0)) { DtError (ASL_ERROR, ASL_MSG_ZERO_VALUE, Field, NULL); } /* * Generate the maximum value for the data type (ByteLength) * Note: construct chosen for maximum portability */ MaxValue = ((UINT64) (-1)) >> (64 - (ByteLength * 8)); /* Validate that the input value is within range of the target */ if (Value > MaxValue) { sprintf (MsgBuffer, "%8.8X%8.8X - max %u bytes", ACPI_FORMAT_UINT64 (Value), ByteLength); DtError (ASL_ERROR, ASL_MSG_INTEGER_SIZE, Field, MsgBuffer); } memcpy (Buffer, &Value, ByteLength); return; } /****************************************************************************** * * FUNCTION: DtNormalizeBuffer * * PARAMETERS: Buffer - Input buffer * Count - Output the count of hex numbers in * the Buffer * * RETURN: The normalized buffer, must be freed by caller * * DESCRIPTION: [1A,2B,3C,4D] or 1A, 2B, 3C, 4D will be normalized * to 1A 2B 3C 4D * *****************************************************************************/ static char * DtNormalizeBuffer ( char *Buffer, UINT32 *Count) { char *NewBuffer; char *TmpBuffer; UINT32 BufferCount = 0; BOOLEAN Separator = TRUE; char c; NewBuffer = UtLocalCalloc (strlen (Buffer) + 1); TmpBuffer = NewBuffer; while ((c = *Buffer++)) { switch (c) { /* Valid separators */ case '[': case ']': case ' ': case ',': Separator = TRUE; break; default: if (Separator) { /* Insert blank as the standard separator */ if (NewBuffer[0]) { *TmpBuffer++ = ' '; BufferCount++; } Separator = FALSE; } *TmpBuffer++ = c; break; } } *Count = BufferCount + 1; return (NewBuffer); } /****************************************************************************** * * FUNCTION: DtCompileBuffer * * PARAMETERS: Buffer - Output buffer * StringValue - Integer list to be compiled * Field - Current field object * ByteLength - Byte length of the integer list * * RETURN: Count of remaining data in the input list * * DESCRIPTION: Compile and pack an integer list, for example * "AA 1F 20 3B" ==> Buffer[] = {0xAA,0x1F,0x20,0x3B} * *****************************************************************************/ UINT32 DtCompileBuffer ( UINT8 *Buffer, char *StringValue, DT_FIELD *Field, UINT32 ByteLength) { char *Substring; ACPI_STATUS Status; UINT32 Count; UINT32 i; /* Allow several different types of value separators */ StringValue = DtNormalizeBuffer (StringValue, &Count); Substring = StringValue; /* Each element of StringValue is now three chars (2 hex + 1 space) */ for (i = 0; i < Count; i++, Substring += 3) { /* Check for byte value too long */ if (*(&Substring[2]) && (*(&Substring[2]) != ' ')) { DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, Substring); goto Exit; } /* Convert two ASCII characters to one hex byte */ Status = AcpiUtAsciiToHexByte (Substring, &Buffer[i]); if (ACPI_FAILURE (Status)) { DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, Substring); goto Exit; } } Exit: ACPI_FREE (StringValue); return (ByteLength - Count); } /****************************************************************************** * * FUNCTION: DtCompileFlag * * PARAMETERS: Buffer - Output buffer * Field - Field to be compiled * Info - Flag info * * RETURN: None * * DESCRIPTION: Compile a flag field. Handles flags up to 64 bits. * *****************************************************************************/ void DtCompileFlag ( UINT8 *Buffer, DT_FIELD *Field, ACPI_DMTABLE_INFO *Info) { UINT64 Value = 0; UINT32 BitLength = 1; UINT8 BitPosition = 0; Value = AcpiUtImplicitStrtoul64 (Field->Value); switch (Info->Opcode) { case ACPI_DMT_FLAG0: case ACPI_DMT_FLAG1: case ACPI_DMT_FLAG2: case ACPI_DMT_FLAG3: case ACPI_DMT_FLAG4: case ACPI_DMT_FLAG5: case ACPI_DMT_FLAG6: case ACPI_DMT_FLAG7: BitPosition = Info->Opcode; BitLength = 1; break; case ACPI_DMT_FLAGS0: BitPosition = 0; BitLength = 2; break; case ACPI_DMT_FLAGS1: BitPosition = 1; BitLength = 2; break; case ACPI_DMT_FLAGS2: BitPosition = 2; BitLength = 2; break; case ACPI_DMT_FLAGS4: BitPosition = 4; BitLength = 2; break; case ACPI_DMT_FLAGS4_0: BitPosition = 0; BitLength = 4; break; case ACPI_DMT_FLAGS4_4: BitPosition = 4; BitLength = 4; break; case ACPI_DMT_FLAGS4_8: BitPosition = 8; BitLength = 4; break; case ACPI_DMT_FLAGS4_12: BitPosition = 12; BitLength = 4; break; case ACPI_DMT_FLAGS16_16: BitPosition = 16; BitLength = 16; break; default: DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid flag opcode"); break; } /* Check range of the input flag value */ if (Value >= ((UINT64) 1 << BitLength)) { sprintf (MsgBuffer, "Maximum %u bit", BitLength); DtError (ASL_ERROR, ASL_MSG_FLAG_VALUE, Field, MsgBuffer); Value = 0; } *Buffer |= (UINT8) (Value << BitPosition); }