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107d0c3800
As of now, the field-validator implemented by FNPTR_FIELD_VALIDATOR function pointer takes two parameters, the pointer to the field and a context pointer. For cases where the validator has to have access to the length of the field, there is no clean way to currently do it. In order to resolve this, this commit updates the field-validator's prototype to take the length of the field as an additional parameter. This enhancement allows field validators to perform more comprehensive validation, especially when the length of the field is critical to the validation logic. This change should improve the overall robustness and flexibility of AcpiView. Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com> Cc: James Morse <james.Morse@arm.com> Cc: Sami Mujawar <sami.mujawar@arm.com> Cc: Thomas Abraham <thomas.abraham@arm.com> Cc: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
152 lines
5.0 KiB
C
152 lines
5.0 KiB
C
/** @file
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SPCR table parser
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Copyright (c) 2016 - 2024, 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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- Microsoft Serial Port Console Redirection Table
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Specification - Version 1.03 - August 10, 2015.
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**/
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#include <IndustryStandard/Acpi.h>
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#include <IndustryStandard/SerialPortConsoleRedirectionTable.h>
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#include <Library/UefiLib.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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/**
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This function validates the Interrupt Type.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Length Length of the field.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidateInterruptType (
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IN UINT8 *Ptr,
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IN UINT32 Length,
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IN VOID *Context
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)
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{
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#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
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UINT8 InterruptType;
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InterruptType = *Ptr;
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if (InterruptType !=
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EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERRUPT_TYPE_GIC)
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{
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IncrementErrorCount ();
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Print (
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L"\nERROR: InterruptType = %d. This must be 8 on ARM Platforms",
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InterruptType
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);
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}
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#endif
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}
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/**
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This function validates the Irq.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Length Length of the field.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidateIrq (
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IN UINT8 *Ptr,
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IN UINT32 Length,
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IN VOID *Context
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)
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{
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#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
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UINT8 Irq;
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Irq = *Ptr;
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if (Irq != 0) {
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IncrementErrorCount ();
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Print (
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L"\nERROR: Irq = %d. This must be zero on ARM Platforms\n",
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Irq
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);
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}
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#endif
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}
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/**
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An ACPI_PARSER array describing the ACPI SPCR Table.
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**/
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STATIC CONST ACPI_PARSER SpcrParser[] = {
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PARSE_ACPI_HEADER (&AcpiHdrInfo),
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{ L"Interface Type", 1, 36, L"%d", NULL, NULL, NULL, NULL },
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{ L"Reserved", 3, 37, L"%x %x %x", Dump3Chars, NULL, NULL, NULL },
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{ L"Base Address", 12, 40, NULL, DumpGas, NULL, NULL, NULL },
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{ L"Interrupt Type", 1, 52, L"%d", NULL, NULL, ValidateInterruptType, NULL },
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{ L"IRQ", 1, 53, L"%d", NULL, NULL, ValidateIrq, NULL },
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{ L"Global System Interrupt", 4, 54, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Baud Rate", 1, 58, L"%d", NULL, NULL, NULL, NULL },
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{ L"Parity", 1, 59, L"%d", NULL, NULL, NULL, NULL },
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{ L"Stop Bits", 1, 60, L"%d", NULL, NULL, NULL, NULL },
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{ L"Flow Control", 1, 61, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Terminal Type", 1, 62, L"%d", NULL, NULL, NULL, NULL },
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{ L"Reserved", 1, 63, L"%x", NULL, NULL, NULL, NULL },
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{ L"PCI Device ID", 2, 64, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"PCI Vendor ID", 2, 66, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"PCI Bus Number", 1, 68, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"PCI Device Number", 1, 69, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"PCI Function Number", 1, 70, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"PCI Flags", 4, 71, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"PCI Segment", 1, 75, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Reserved", 4, 76, L"%x", NULL, NULL, NULL, NULL }
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};
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/**
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This function parses the ACPI SPCR table.
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When trace is enabled this function parses the SPCR table and
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traces the ACPI table fields.
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This function also performs validations of the ACPI table fields.
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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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ParseAcpiSpcr (
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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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if (!Trace) {
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return;
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}
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// Dump the SPCR
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ParseAcpi (
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TRUE,
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0,
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"SPCR",
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Ptr,
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AcpiTableLength,
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PARSER_PARAMS (SpcrParser)
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);
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}
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