473 lines
15 KiB
C
473 lines
15 KiB
C
/******************************************************************************
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*
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* Module Name: asloffset - Generate a C "offset table" for BIOS use.
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "aslcompiler.h"
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#include "aslcompiler.y.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("asloffset")
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/* Local prototypes */
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static void
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LsEmitOffsetTableEntry (
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UINT32 FileId,
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ACPI_NAMESPACE_NODE *Node,
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UINT32 NamepathOffset,
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UINT32 Offset,
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char *OpName,
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UINT64 Value,
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UINT8 AmlOpcode,
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UINT16 ParentOpcode);
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/*******************************************************************************
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*
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* FUNCTION: LsAmlOffsetWalk
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Process one node during a offset table file generation.
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*
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* Three types of objects are currently emitted to the offset table:
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* 1) Tagged (named) resource descriptors
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* 2) Named integer objects with constant integer values
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* 3) Named package objects
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* 4) Operation Regions that have constant Offset (address) parameters
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* 5) Control methods
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*
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* The offset table allows the BIOS to dynamically update the values of these
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* objects at boot time.
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*
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******************************************************************************/
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ACPI_STATUS
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LsAmlOffsetWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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UINT32 FileId = (UINT32) ACPI_TO_INTEGER (Context);
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ACPI_NAMESPACE_NODE *Node;
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UINT32 Length;
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UINT32 NamepathOffset;
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UINT32 DataOffset;
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ACPI_PARSE_OBJECT *NextOp;
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/* Ignore actual data blocks for resource descriptors */
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if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DATA)
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{
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return (AE_OK); /* Do NOT update the global AML offset */
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}
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/* We are only interested in named objects (have a namespace node) */
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Node = Op->Asl.Node;
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if (!Node)
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{
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Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
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return (AE_OK);
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}
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/* Named resource descriptor (has a descriptor tag) */
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if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE) &&
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(Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC))
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{
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LsEmitOffsetTableEntry (FileId, Node, 0, Gbl_CurrentAmlOffset,
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Op->Asl.ParseOpName, 0, Op->Asl.Extra, AML_BUFFER_OP);
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Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
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return (AE_OK);
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}
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switch (Op->Asl.AmlOpcode)
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{
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case AML_NAME_OP:
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/* Named object -- Name (NameString, DataRefObject) */
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if (!Op->Asl.Child)
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{
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FlPrintFile (FileId, "%s NO CHILD!\n", MsgBuffer);
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return (AE_OK);
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}
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Length = Op->Asl.FinalAmlLength;
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NamepathOffset = Gbl_CurrentAmlOffset + Length;
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/* Get to the NameSeg/NamePath Op (and length of the name) */
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Op = Op->Asl.Child;
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/* Get offset of last nameseg and the actual data */
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NamepathOffset = Gbl_CurrentAmlOffset + Length +
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(Op->Asl.FinalAmlLength - ACPI_NAME_SIZE);
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DataOffset = Gbl_CurrentAmlOffset + Length +
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Op->Asl.FinalAmlLength;
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/* Get actual value associated with the name */
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Op = Op->Asl.Next;
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switch (Op->Asl.AmlOpcode)
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{
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case AML_BYTE_OP:
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case AML_WORD_OP:
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case AML_DWORD_OP:
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case AML_QWORD_OP:
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/* The +1 is to handle the integer size prefix (opcode) */
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, (DataOffset + 1),
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Op->Asl.ParseOpName, Op->Asl.Value.Integer,
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(UINT8) Op->Asl.AmlOpcode, AML_NAME_OP);
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break;
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case AML_ONE_OP:
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case AML_ONES_OP:
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case AML_ZERO_OP:
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/* For these, offset will point to the opcode */
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
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Op->Asl.ParseOpName, Op->Asl.Value.Integer,
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(UINT8) Op->Asl.AmlOpcode, AML_NAME_OP);
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break;
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case AML_PACKAGE_OP:
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case AML_VAR_PACKAGE_OP:
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/* Get the package element count */
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NextOp = Op->Asl.Child;
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
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Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
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(UINT8) Op->Asl.AmlOpcode, AML_NAME_OP);
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break;
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default:
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break;
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}
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Gbl_CurrentAmlOffset += Length;
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return (AE_OK);
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case AML_REGION_OP:
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/* OperationRegion (NameString, RegionSpace, RegionOffset, RegionLength) */
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Length = Op->Asl.FinalAmlLength;
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/* Get the name/namepath node */
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NextOp = Op->Asl.Child;
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/* Get offset of last nameseg and the actual data */
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NamepathOffset = Gbl_CurrentAmlOffset + Length +
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(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
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DataOffset = Gbl_CurrentAmlOffset + Length +
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(NextOp->Asl.FinalAmlLength + 1);
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/* Get the SpaceId node, then the Offset (address) node */
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NextOp = NextOp->Asl.Next;
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NextOp = NextOp->Asl.Next;
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switch (NextOp->Asl.AmlOpcode)
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{
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/*
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* We are only interested in integer constants that can be changed
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* at boot time. Note, the One/Ones/Zero opcodes are considered
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* non-changeable, so we ignore them here.
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*/
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case AML_BYTE_OP:
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case AML_WORD_OP:
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case AML_DWORD_OP:
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case AML_QWORD_OP:
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, (DataOffset + 1),
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Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
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(UINT8) NextOp->Asl.AmlOpcode, AML_REGION_OP);
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Gbl_CurrentAmlOffset += Length;
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return (AE_OK);
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default:
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break;
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}
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break;
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case AML_METHOD_OP:
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/* Method (Namepath, ...) */
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Length = Op->Asl.FinalAmlLength;
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/* Get the NameSeg/NamePath Op */
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NextOp = Op->Asl.Child;
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/* Get offset of last nameseg and the actual data (flags byte) */
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NamepathOffset = Gbl_CurrentAmlOffset + Length +
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(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
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DataOffset = Gbl_CurrentAmlOffset + Length +
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NextOp->Asl.FinalAmlLength;
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/* Get the flags byte Op */
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NextOp = NextOp->Asl.Next;
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
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Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
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(UINT8) Op->Asl.AmlOpcode, AML_METHOD_OP);
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break;
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case AML_PROCESSOR_OP:
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/* Processor (Namepath, ProcessorId, Address, Length) */
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Length = Op->Asl.FinalAmlLength;
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NextOp = Op->Asl.Child; /* Get Namepath */
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/* Get offset of last nameseg and the actual data (PBlock address) */
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NamepathOffset = Gbl_CurrentAmlOffset + Length +
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(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
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DataOffset = Gbl_CurrentAmlOffset + Length +
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(NextOp->Asl.FinalAmlLength + 1);
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NextOp = NextOp->Asl.Next; /* Get ProcessorID (BYTE) */
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NextOp = NextOp->Asl.Next; /* Get Address (DWORD) */
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, DataOffset,
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Op->Asl.ParseOpName, NextOp->Asl.Value.Integer,
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(UINT8) AML_DWORD_OP, AML_PROCESSOR_OP);
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break;
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case AML_DEVICE_OP:
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case AML_SCOPE_OP:
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case AML_THERMAL_ZONE_OP:
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/* Device/Scope/ThermalZone (Namepath) */
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Length = Op->Asl.FinalAmlLength;
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NextOp = Op->Asl.Child; /* Get Namepath */
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/* Get offset of last nameseg */
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NamepathOffset = Gbl_CurrentAmlOffset + Length +
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(NextOp->Asl.FinalAmlLength - ACPI_NAME_SIZE);
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LsEmitOffsetTableEntry (FileId, Node, NamepathOffset, 0,
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Op->Asl.ParseOpName, 0, (UINT8) 0, Op->Asl.AmlOpcode);
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break;
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default:
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break;
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}
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Gbl_CurrentAmlOffset += Op->Asl.FinalAmlLength;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: LsEmitOffsetTableEntry
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*
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* PARAMETERS: FileId - ID of current listing file
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* Node - Namespace node associated with the name
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* Offset - Offset of the value within the AML table
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* OpName - Name of the AML opcode
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* Value - Current value of the AML field
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* AmlOpcode - Opcode associated with the field
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* ObjectType - ACPI object type
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*
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* RETURN: None
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*
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* DESCRIPTION: Emit a line of the offset table (-so option)
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*
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******************************************************************************/
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static void
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LsEmitOffsetTableEntry (
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UINT32 FileId,
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ACPI_NAMESPACE_NODE *Node,
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UINT32 NamepathOffset,
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UINT32 Offset,
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char *OpName,
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UINT64 Value,
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UINT8 AmlOpcode,
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UINT16 ParentOpcode)
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{
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ACPI_BUFFER TargetPath;
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ACPI_STATUS Status;
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/* Get the full pathname to the namespace node */
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TargetPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
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Status = AcpiNsHandleToPathname (Node, &TargetPath, FALSE);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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/* [1] - Skip the opening backslash for the path */
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strcpy (MsgBuffer, "\"");
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strcat (MsgBuffer, &((char *) TargetPath.Pointer)[1]);
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strcat (MsgBuffer, "\",");
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ACPI_FREE (TargetPath.Pointer);
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/*
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* Max offset is 4G, constrained by 32-bit ACPI table length.
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* Max Length for Integers is 8 bytes.
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*/
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FlPrintFile (FileId,
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" {%-29s 0x%4.4X, 0x%8.8X, 0x%2.2X, 0x%8.8X, 0x%8.8X%8.8X}, /* %s */\n",
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MsgBuffer, ParentOpcode, NamepathOffset, AmlOpcode,
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Offset, ACPI_FORMAT_UINT64 (Value), OpName);
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}
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/*******************************************************************************
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*
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* FUNCTION: LsDoOffsetTableHeader, LsDoOffsetTableFooter
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*
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* PARAMETERS: FileId - ID of current listing file
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*
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* RETURN: None
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*
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* DESCRIPTION: Header and footer for the offset table file.
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*
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******************************************************************************/
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void
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LsDoOffsetTableHeader (
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UINT32 FileId)
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{
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FlPrintFile (FileId,
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"#ifndef __AML_OFFSET_TABLE_H\n"
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"#define __AML_OFFSET_TABLE_H\n\n");
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FlPrintFile (FileId, "typedef struct {\n"
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" char *Pathname; /* Full pathname (from root) to the object */\n"
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" unsigned short ParentOpcode; /* AML opcode for the parent object */\n"
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" unsigned long NamesegOffset; /* Offset of last nameseg in the parent namepath */\n"
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" unsigned char Opcode; /* AML opcode for the data */\n"
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" unsigned long Offset; /* Offset for the data */\n"
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" unsigned long long Value; /* Original value of the data (as applicable) */\n"
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"} AML_OFFSET_TABLE_ENTRY;\n\n");
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FlPrintFile (FileId,
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"#endif /* __AML_OFFSET_TABLE_H */\n\n");
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FlPrintFile (FileId,
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"/*\n"
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" * Information specific to the supported object types:\n"
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" *\n"
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" * Integers:\n"
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" * Opcode is the integer prefix, indicates length of the data\n"
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" * (One of: BYTE, WORD, DWORD, QWORD, ZERO, ONE, ONES)\n"
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" * Offset points to the actual integer data\n"
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" * Value is the existing value in the AML\n"
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" *\n"
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" * Packages:\n"
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" * Opcode is the package or var_package opcode\n"
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" * Offset points to the package opcode\n"
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" * Value is the package element count\n"
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" *\n"
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" * Operation Regions:\n"
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" * Opcode is the address integer prefix, indicates length of the data\n"
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" * Offset points to the region address\n"
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" * Value is the existing address value in the AML\n"
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" *\n"
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" * Control Methods:\n"
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" * Offset points to the method flags byte\n"
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" * Value is the existing flags value in the AML\n"
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" *\n"
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" * Processors:\n"
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" * Offset points to the first byte of the PBlock Address\n"
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" *\n"
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" * Resource Descriptors:\n"
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" * Opcode is the descriptor type\n"
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" * Offset points to the start of the descriptor\n"
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" *\n"
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" * Scopes/Devices/ThermalZones:\n"
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" * Nameseg offset only\n"
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" */\n");
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FlPrintFile (FileId,
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"AML_OFFSET_TABLE_ENTRY %s_%s_OffsetTable[] =\n{\n",
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Gbl_TableSignature, Gbl_TableId);
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}
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void
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LsDoOffsetTableFooter (
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UINT32 FileId)
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{
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FlPrintFile (FileId,
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" {NULL,0,0,0,0,0} /* Table terminator */\n};\n\n");
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Gbl_CurrentAmlOffset = 0;
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}
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