| /****************************************************************************** |
| * |
| * Module Name: asloffset - Generate a C "offset table" for BIOS use. |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, 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. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * 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 "aslcompiler.h" |
| #include "aslcompiler.y.h" |
| #include "amlcode.h" |
| #include "acnamesp.h" |
| |
| |
| #define _COMPONENT ACPI_COMPILER |
| ACPI_MODULE_NAME ("asloffset") |
| |
| |
| /* Local prototypes */ |
| |
| static void |
| LsEmitOffsetTableEntry ( |
| UINT32 FileId, |
| ACPI_NAMESPACE_NODE *Node, |
| UINT32 NamepathOffset, |
| UINT32 Offset, |
| char *OpName, |
| UINT64 Value, |
| UINT8 AmlOpcode, |
| UINT16 ParentOpcode); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LsAmlOffsetWalk |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Process one node during a offset table file generation. |
| * |
| * Three types of objects are currently emitted to the offset table: |
| * 1) Tagged (named) resource descriptors |
| * 2) Named integer objects with constant integer values |
| * 3) Named package objects |
| * 4) Operation Regions that have constant Offset (address) parameters |
| * 5) Control methods |
| * |
| * The offset table allows the BIOS to dynamically update the values of these |
| * objects at boot time. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| LsAmlOffsetWalk ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| UINT32 FileId = (UINT32) ACPI_TO_INTEGER (Context); |
| ACPI_NAMESPACE_NODE *Node; |
| UINT32 Length; |
| UINT32 NamepathOffset; |
| UINT32 DataOffset; |
| ACPI_PARSE_OBJECT *NextOp; |
| |
| |
| /* Ignore actual data blocks for resource descriptors */ |
| |
| if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DATA) |
| { |
| return (AE_OK); /* Do NOT update the global AML offset */ |
| } |
| |
| /* We are only interested in named objects (have a namespace node) */ |
| |
| Node = Op->Asl.Node; |
| if (!Node) |
| { |
| Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength; |
| return (AE_OK); |
| } |
| |
| /* Named resource descriptor (has a descriptor tag) */ |
| |
| if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE) && |
| (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC)) |
| { |
| LsEmitOffsetTableEntry (FileId, Node, 0, Gbl_CurrentAmlOffset, |
| Op->Asl.ParseOpName, 0, Op->Asl.Extra, AML_BUFFER_OP); |
| |
| Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength; |
| return (AE_OK); |
| } |
| |
| switch (Op->Asl.AmlOpcode) |
| { |
| case AML_NAME_OP: |
| |
| /* Named object -- Name (NameString, DataRefObject) */ |
| |
| if (!Op->Asl.Child) |
| { |
| FlPrintFile (FileId, "%s NO CHILD!\n", MsgBuffer); |
| return (AE_OK); |
| } |
| |
| Length = Op->Asl.FinalAmlLength; |
| NamepathOffset = Gbl_CurrentAmlOffset + Length; |
| |
| /* Get to the NameSeg/NamePath Op (and length of the name) */ |
| |
| Op = Op->Asl.Child; |
| |
| /* Get offset of last nameseg and the actual data */ |
| |
| NamepathOffset = Gbl_CurrentAmlOffset + Length + |
| (Op->Asl.FinalAmlLength - ACPI_NAME_SIZE); |
| |
| DataOffset = Gbl_CurrentAmlOffset + Length + |
| Op->Asl.FinalAmlLength; |
| |
| /* Get actual value associated with the name */ |
| |
| Op = Op->Asl.Next; |
| switch (Op->Asl.AmlOpcode) |
| { |
| case AML_BYTE_OP: |
| case AML_WORD_OP: |
| case AML_DWORD_OP: |
| case AML_QWORD_OP: |
| |
| /* The +1 is to handle the integer size prefix (opcode) */ |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, (DataOffset + 1), |
| Op->Asl.ParseOpName, Op->Asl.Value.Integer, |
| (UINT8) Op->Asl.AmlOpcode, AML_NAME_OP); |
| break; |
| |
| case AML_ONE_OP: |
| case AML_ONES_OP: |
| case AML_ZERO_OP: |
| |
| /* For these, offset will point to the opcode */ |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset, |
| Op->Asl.ParseOpName, Op->Asl.Value.Integer, |
| (UINT8) Op->Asl.AmlOpcode, AML_NAME_OP); |
| break; |
| |
| case AML_PACKAGE_OP: |
| case AML_VAR_PACKAGE_OP: |
| |
| /* Get the package element count */ |
| |
| NextOp = Op->Asl.Child; |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset, |
| Op->Asl.ParseOpName, NextOp->Asl.Value.Integer, |
| (UINT8) Op->Asl.AmlOpcode, AML_NAME_OP); |
| break; |
| |
| default: |
| break; |
| } |
| |
| Gbl_CurrentAmlOffset += Length; |
| return (AE_OK); |
| |
| case AML_REGION_OP: |
| |
| /* OperationRegion (NameString, RegionSpace, RegionOffset, RegionLength) */ |
| |
| Length = Op->Asl.FinalAmlLength; |
| |
| /* Get the name/namepath node */ |
| |
| NextOp = Op->Asl.Child; |
| |
| /* Get offset of last nameseg and the actual data */ |
| |
| NamepathOffset = Gbl_CurrentAmlOffset + Length + |
| (NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE); |
| |
| DataOffset = Gbl_CurrentAmlOffset + Length + |
| (NextOp->Asl.FinalAmlLength + 1); |
| |
| /* Get the SpaceId node, then the Offset (address) node */ |
| |
| NextOp = NextOp->Asl.Next; |
| NextOp = NextOp->Asl.Next; |
| |
| switch (NextOp->Asl.AmlOpcode) |
| { |
| /* |
| * We are only interested in integer constants that can be changed |
| * at boot time. Note, the One/Ones/Zero opcodes are considered |
| * non-changeable, so we ignore them here. |
| */ |
| case AML_BYTE_OP: |
| case AML_WORD_OP: |
| case AML_DWORD_OP: |
| case AML_QWORD_OP: |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, (DataOffset + 1), |
| Op->Asl.ParseOpName, NextOp->Asl.Value.Integer, |
| (UINT8) NextOp->Asl.AmlOpcode, AML_REGION_OP); |
| |
| Gbl_CurrentAmlOffset += Length; |
| return (AE_OK); |
| |
| default: |
| break; |
| } |
| break; |
| |
| case AML_METHOD_OP: |
| |
| /* Method (Namepath, ...) */ |
| |
| Length = Op->Asl.FinalAmlLength; |
| |
| /* Get the NameSeg/NamePath Op */ |
| |
| NextOp = Op->Asl.Child; |
| |
| /* Get offset of last nameseg and the actual data (flags byte) */ |
| |
| NamepathOffset = Gbl_CurrentAmlOffset + Length + |
| (NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE); |
| |
| DataOffset = Gbl_CurrentAmlOffset + Length + |
| NextOp->Asl.FinalAmlLength; |
| |
| /* Get the flags byte Op */ |
| |
| NextOp = NextOp->Asl.Next; |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset, |
| Op->Asl.ParseOpName, NextOp->Asl.Value.Integer, |
| (UINT8) Op->Asl.AmlOpcode, AML_METHOD_OP); |
| break; |
| |
| case AML_PROCESSOR_OP: |
| |
| /* Processor (Namepath, ProcessorId, Address, Length) */ |
| |
| Length = Op->Asl.FinalAmlLength; |
| NextOp = Op->Asl.Child; /* Get Namepath */ |
| |
| /* Get offset of last nameseg and the actual data (PBlock address) */ |
| |
| NamepathOffset = Gbl_CurrentAmlOffset + Length + |
| (NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE); |
| |
| DataOffset = Gbl_CurrentAmlOffset + Length + |
| (NextOp->Asl.FinalAmlLength + 1); |
| |
| NextOp = NextOp->Asl.Next; /* Get ProcessorID (BYTE) */ |
| NextOp = NextOp->Asl.Next; /* Get Address (DWORD) */ |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset, |
| Op->Asl.ParseOpName, NextOp->Asl.Value.Integer, |
| (UINT8) AML_DWORD_OP, AML_PROCESSOR_OP); |
| break; |
| |
| case AML_DEVICE_OP: |
| case AML_SCOPE_OP: |
| case AML_THERMAL_ZONE_OP: |
| |
| /* Device/Scope/ThermalZone (Namepath) */ |
| |
| Length = Op->Asl.FinalAmlLength; |
| NextOp = Op->Asl.Child; /* Get Namepath */ |
| |
| /* Get offset of last nameseg */ |
| |
| NamepathOffset = Gbl_CurrentAmlOffset + Length + |
| (NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE); |
| |
| LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, 0, |
| Op->Asl.ParseOpName, 0, (UINT8) 0, Op->Asl.AmlOpcode); |
| break; |
| |
| default: |
| break; |
| } |
| |
| Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength; |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LsEmitOffsetTableEntry |
| * |
| * PARAMETERS: FileId - ID of current listing file |
| * Node - Namespace node associated with the name |
| * Offset - Offset of the value within the AML table |
| * OpName - Name of the AML opcode |
| * Value - Current value of the AML field |
| * AmlOpcode - Opcode associated with the field |
| * ObjectType - ACPI object type |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Emit a line of the offset table (-so option) |
| * |
| ******************************************************************************/ |
| |
| static void |
| LsEmitOffsetTableEntry ( |
| UINT32 FileId, |
| ACPI_NAMESPACE_NODE *Node, |
| UINT32 NamepathOffset, |
| UINT32 Offset, |
| char *OpName, |
| UINT64 Value, |
| UINT8 AmlOpcode, |
| UINT16 ParentOpcode) |
| { |
| ACPI_BUFFER TargetPath; |
| ACPI_STATUS Status; |
| |
| |
| /* Get the full pathname to the namespace node */ |
| |
| TargetPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| Status = AcpiNsHandleToPathname (Node, &TargetPath, FALSE); |
| if (ACPI_FAILURE (Status)) |
| { |
| return; |
| } |
| |
| /* [1] - Skip the opening backslash for the path */ |
| |
| strcpy (MsgBuffer, "\""); |
| strcat (MsgBuffer, &((char *) TargetPath.Pointer)[1]); |
| strcat (MsgBuffer, "\","); |
| ACPI_FREE (TargetPath.Pointer); |
| |
| /* |
| * Max offset is 4G, constrained by 32-bit ACPI table length. |
| * Max Length for Integers is 8 bytes. |
| */ |
| FlPrintFile (FileId, |
| " {%-29s 0x%4.4X, 0x%8.8X, 0x%2.2X, 0x%8.8X, 0x%8.8X%8.8X}, /* %s */\n", |
| MsgBuffer, ParentOpcode, NamepathOffset, AmlOpcode, |
| Offset, ACPI_FORMAT_UINT64 (Value), OpName); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LsDoOffsetTableHeader, LsDoOffsetTableFooter |
| * |
| * PARAMETERS: FileId - ID of current listing file |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Header and footer for the offset table file. |
| * |
| ******************************************************************************/ |
| |
| void |
| LsDoOffsetTableHeader ( |
| UINT32 FileId) |
| { |
| |
| FlPrintFile (FileId, |
| "#ifndef __AML_OFFSET_TABLE_H\n" |
| "#define __AML_OFFSET_TABLE_H\n\n"); |
| |
| FlPrintFile (FileId, "typedef struct {\n" |
| " char *Pathname; /* Full pathname (from root) to the object */\n" |
| " unsigned short ParentOpcode; /* AML opcode for the parent object */\n" |
| " unsigned long NamesegOffset; /* Offset of last nameseg in the parent namepath */\n" |
| " unsigned char Opcode; /* AML opcode for the data */\n" |
| " unsigned long Offset; /* Offset for the data */\n" |
| " unsigned long long Value; /* Original value of the data (as applicable) */\n" |
| "} AML_OFFSET_TABLE_ENTRY;\n\n"); |
| |
| FlPrintFile (FileId, |
| "#endif /* __AML_OFFSET_TABLE_H */\n\n"); |
| |
| FlPrintFile (FileId, |
| "/*\n" |
| " * Information specific to the supported object types:\n" |
| " *\n" |
| " * Integers:\n" |
| " * Opcode is the integer prefix, indicates length of the data\n" |
| " * (One of: BYTE, WORD, DWORD, QWORD, ZERO, ONE, ONES)\n" |
| " * Offset points to the actual integer data\n" |
| " * Value is the existing value in the AML\n" |
| " *\n" |
| " * Packages:\n" |
| " * Opcode is the package or var_package opcode\n" |
| " * Offset points to the package opcode\n" |
| " * Value is the package element count\n" |
| " *\n" |
| " * Operation Regions:\n" |
| " * Opcode is the address integer prefix, indicates length of the data\n" |
| " * Offset points to the region address\n" |
| " * Value is the existing address value in the AML\n" |
| " *\n" |
| " * Control Methods:\n" |
| " * Offset points to the method flags byte\n" |
| " * Value is the existing flags value in the AML\n" |
| " *\n" |
| " * Processors:\n" |
| " * Offset points to the first byte of the PBlock Address\n" |
| " *\n" |
| " * Resource Descriptors:\n" |
| " * Opcode is the descriptor type\n" |
| " * Offset points to the start of the descriptor\n" |
| " *\n" |
| " * Scopes/Devices/ThermalZones:\n" |
| " * Nameseg offset only\n" |
| " */\n"); |
| |
| FlPrintFile (FileId, |
| "AML_OFFSET_TABLE_ENTRY %s_%s_OffsetTable[] =\n{\n", |
| Gbl_TableSignature, Gbl_TableId); |
| } |
| |
| |
| void |
| LsDoOffsetTableFooter ( |
| UINT32 FileId) |
| { |
| |
| FlPrintFile (FileId, |
| " {NULL,0,0,0,0,0} /* Table terminator */\n};\n\n"); |
| Gbl_CurrentAmlOffset = 0; |
| } |
