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eefa8f8bf2
Remove a call to ParseAcpi() responsible for getting the XSDT table length. This call is not needed because the ACPI table buffer length is provided as an input argument to the ParseAcpiXsdt() function. Modify remaining code to use the AcpiTableLength argument of the ParseAcpiXsdt() function instead of a global static variable. Signed-off-by: Krzysztof Koch <krzysztof.koch@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
141 lines
3.3 KiB
C
141 lines
3.3 KiB
C
/** @file
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XSDT table parser
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Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Reference(s):
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- ACPI 6.2 Specification - Errata A, September 2017
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**/
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#include <IndustryStandard/Acpi.h>
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#include <Library/UefiLib.h>
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#include <Library/PrintLib.h>
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#include "AcpiParser.h"
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#include "AcpiTableParser.h"
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// Local variables
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STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
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/** An ACPI_PARSER array describing the ACPI XSDT table.
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*/
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STATIC CONST ACPI_PARSER XsdtParser[] = {
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PARSE_ACPI_HEADER (&AcpiHdrInfo)
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};
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/**
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Get the ACPI XSDT header info.
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**/
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CONST ACPI_DESCRIPTION_HEADER_INFO *
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EFIAPI
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GetAcpiXsdtHeaderInfo (
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VOID
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)
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{
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return &AcpiHdrInfo;
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}
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/**
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This function parses the ACPI XSDT table and optionally traces the ACPI table fields.
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This function also performs validation of the XSDT table.
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@param [in] Trace If TRUE, trace the ACPI fields.
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] AcpiTableLength Length of the ACPI table.
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@param [in] AcpiTableRevision Revision of the ACPI table.
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**/
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VOID
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EFIAPI
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ParseAcpiXsdt (
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IN BOOLEAN Trace,
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IN UINT8* Ptr,
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IN UINT32 AcpiTableLength,
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IN UINT8 AcpiTableRevision
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)
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{
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UINT32 Offset;
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UINT32 TableOffset;
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UINT64* TablePointer;
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UINTN EntryIndex;
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CHAR16 Buffer[32];
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Offset = ParseAcpi (
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Trace,
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0,
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"XSDT",
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Ptr,
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AcpiTableLength,
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PARSER_PARAMS (XsdtParser)
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);
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TableOffset = Offset;
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if (Trace) {
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EntryIndex = 0;
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TablePointer = (UINT64*)(Ptr + TableOffset);
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while (Offset < AcpiTableLength) {
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CONST UINT32* Signature;
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CONST UINT32* Length;
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CONST UINT8* Revision;
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if ((UINT64*)(UINTN)(*TablePointer) != NULL) {
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UINT8* SignaturePtr;
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ParseAcpiHeader (
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(UINT8*)(UINTN)(*TablePointer),
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&Signature,
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&Length,
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&Revision
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);
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SignaturePtr = (UINT8*)Signature;
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UnicodeSPrint (
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Buffer,
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sizeof (Buffer),
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L"Entry[%d] - %c%c%c%c",
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EntryIndex++,
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SignaturePtr[0],
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SignaturePtr[1],
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SignaturePtr[2],
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SignaturePtr[3]
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);
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} else {
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UnicodeSPrint (
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Buffer,
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sizeof (Buffer),
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L"Entry[%d]",
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EntryIndex++
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);
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}
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PrintFieldName (2, Buffer);
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Print (L"0x%lx\n", *TablePointer);
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// Validate the table pointers are not NULL
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if ((UINT64*)(UINTN)(*TablePointer) == NULL) {
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IncrementErrorCount ();
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Print (
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L"ERROR: Invalid table entry at 0x%lx, table address is 0x%lx\n",
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TablePointer,
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*TablePointer
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);
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}
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Offset += sizeof (UINT64);
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TablePointer++;
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} // while
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}
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// Process the tables
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Offset = TableOffset;
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TablePointer = (UINT64*)(Ptr + TableOffset);
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while (Offset < AcpiTableLength) {
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if ((UINT64*)(UINTN)(*TablePointer) != NULL) {
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ProcessAcpiTable ((UINT8*)(UINTN)(*TablePointer));
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}
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Offset += sizeof (UINT64);
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TablePointer++;
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} // while
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}
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