SpcrParser.c File Reference

#include <IndustryStandard/Acpi.h>
#include <IndustryStandard/SerialPortConsoleRedirectionTable.h>
#include <Library/UefiLib.h>
#include "AcpiParser.h"
#include "AcpiTableParser.h"

Go to the source code of this file.

Functions
STATIC VOID EFIAPI	ValidateInterruptType (IN UINT8 *Ptr, IN UINT32 Length, IN VOID *Context)
STATIC VOID EFIAPI	ValidateIrq (IN UINT8 *Ptr, IN UINT32 Length, IN VOID *Context)
VOID EFIAPI	ParseAcpiSpcr (IN BOOLEAN Trace, IN UINT8 *Ptr, IN UINT32 AcpiTableLength, IN UINT8 AcpiTableRevision)

Variables
STATIC ACPI_DESCRIPTION_HEADER_INFO	AcpiHdrInfo
STATIC CONST ACPI_PARSER	SpcrParser []

Detailed Description

SPCR table parser

Copyright (c) 2016 - 2024, Arm Limited. All rights reserved. SPDX-License-Identifier: BSD-2-Clause-Patent

Reference(s):

• Microsoft Serial Port Console Redirection Table Specification - Version 1.03 - August 10, 2015.

Definition in file SpcrParser.c.

Function Documentation

ParseAcpiSpcr()

VOID EFIAPI ParseAcpiSpcr	(	IN BOOLEAN	Trace,
		IN UINT8 *	Ptr,
		IN UINT32	AcpiTableLength,
		IN UINT8	AcpiTableRevision
	)

This function parses the ACPI SPCR table. When trace is enabled this function parses the SPCR table and traces the ACPI table fields.

This function also performs validations of the ACPI table fields.

Parameters

[in]	Trace	If TRUE, trace the ACPI fields.
[in]	Ptr	Pointer to the start of the buffer.
[in]	AcpiTableLength	Length of the ACPI table.
[in]	AcpiTableRevision	Revision of the ACPI table.

Definition at line 131 of file SpcrParser.c.

ValidateInterruptType()

STATIC VOID EFIAPI ValidateInterruptType	(	IN UINT8 *	Ptr,
		IN UINT32	Length,
		IN VOID *	Context
	)

This function validates the Interrupt Type.

Parameters

[in]	Ptr	Pointer to the start of the field data.
[in]	Length	Length of the field.
[in]	Context	Pointer to context specific information e.g. this could be a pointer to the ACPI table header.

Definition at line 32 of file SpcrParser.c.

ValidateIrq()

STATIC VOID EFIAPI ValidateIrq	(	IN UINT8 *	Ptr,
		IN UINT32	Length,
		IN VOID *	Context
	)

This function validates the Irq.

Parameters

[in]	Ptr	Pointer to the start of the field data.
[in]	Length	Length of the field.
[in]	Context	Pointer to context specific information e.g. this could be a pointer to the ACPI table header.

Definition at line 67 of file SpcrParser.c.

Variable Documentation

AcpiHdrInfo

STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo

Definition at line 19 of file SpcrParser.c.

SpcrParser

STATIC CONST ACPI_PARSER SpcrParser[]

Initial value:

= {
  PARSE_ACPI_HEADER (&AcpiHdrInfo),
  { L"Interface Type",             1,   36, L"%d",       NULL,       NULL, NULL,                  NULL },
  { L"Reserved",                   3,   37, L"%x %x %x", Dump3Chars, NULL, NULL,                  NULL },
  { L"Base Address",               12,  40, NULL,        DumpGas,    NULL, NULL,                  NULL },
  { L"Interrupt Type",             1,   52, L"%d",       NULL,       NULL, ValidateInterruptType, NULL },
  { L"IRQ",                        1,   53, L"%d",       NULL,       NULL, ValidateIrq,           NULL },
  { L"Global System Interrupt",    4,   54, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"Baud Rate",                  1,   58, L"%d",       NULL,       NULL, NULL,                  NULL },
  { L"Parity",                     1,   59, L"%d",       NULL,       NULL, NULL,                  NULL },
  { L"Stop Bits",                  1,   60, L"%d",       NULL,       NULL, NULL,                  NULL },
  { L"Flow Control",               1,   61, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"Terminal Type",              1,   62, L"%d",       NULL,       NULL, NULL,                  NULL },
  { L"Reserved",                   1,   63, L"%x",       NULL,       NULL, NULL,                  NULL },
 
  { L"PCI Device ID",              2,   64, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"PCI Vendor ID",              2,   66, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"PCI Bus Number",             1,   68, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"PCI Device Number",          1,   69, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"PCI Function Number",        1,   70, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"PCI Flags",                  4,   71, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"PCI Segment",                1,   75, L"0x%x",     NULL,       NULL, NULL,                  NULL },
  { L"Reserved",                   4,   76, L"%x",       NULL,       NULL, NULL,                  NULL }
}

An ACPI_PARSER array describing the ACPI SPCR Table.

Definition at line 92 of file SpcrParser.c.