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From: "Yao, Jiewen" <jiewen.yao@intel.com>
To: "Ni, Ruiyu" <ruiyu.ni@intel.com>,
	Sami Mujawar <Sami.Mujawar@arm.com>,
	"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: Evan Lloyd <Evan.Lloyd@arm.com>,
	"leif.lindholm@linaro.org" <leif.lindholm@linaro.org>,
	Matteo Carlini <Matteo.Carlini@arm.com>,
	Stephanie Hughes-Fitt <Stephanie.Hughes-Fitt@arm.com>,
	nd <nd@arm.com>, "Carsey, Jaben" <jaben.carsey@intel.com>
Subject: Re: [PATCH v4] ShellPkg: Add acpiview tool to dump ACPI tables
Date: Wed, 7 Mar 2018 04:23:16 +0000	[thread overview]
Message-ID: <74D8A39837DF1E4DA445A8C0B3885C503AADF486@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <f880803b-75e9-3d15-009e-91b703ca0a4b@Intel.com>

Do we want to support parsing a non-ACPI spec defined ACPI table?

As such, exposing the API to let the table producer define its own parsing logic, instead of in ShellPkg.

Thank you
Yao Jiewen

> -----Original Message-----
> From: Ni, Ruiyu
> Sent: Wednesday, March 7, 2018 11:24 AM
> To: Sami Mujawar <Sami.Mujawar@arm.com>; edk2-devel@lists.01.org
> Cc: Evan Lloyd <Evan.Lloyd@arm.com>; leif.lindholm@linaro.org; Matteo Carlini
> <Matteo.Carlini@arm.com>; Stephanie Hughes-Fitt
> <Stephanie.Hughes-Fitt@arm.com>; nd <nd@arm.com>; Carsey, Jaben
> <jaben.carsey@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>
> Subject: Re: [PATCH v4] ShellPkg: Add acpiview tool to dump ACPI tables
> 
> On 2/27/2018 3:16 AM, Sami Mujawar wrote:
> > Hi Ray,
> >
> > Please see my response below marked [SAMI].
> >
> >>>    ShellPkg/Include/Library/AcpiView/AcpiParser.h
> | 449 ++++++++++++
> >>>    ShellPkg/Include/Library/AcpiView/AcpiTableParser.h
> | 126 ++++
> >
> >> Sami, should the above two new files be removed?
> >
> > [SAMI] The individual table parsers are implemented as NULL libraries that
> register the parser with UefiShellAcpiViewCommandLib. These parser libraries
> are present in sub folders e.g.
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt; a change that
> was introduced in the v3 patch in response to review comments. For building the
> parser libraries, I need a mechanism to get the include path to the header files
> above (which expose the parser registration functions and the common
> functionality implemented in UefiShellAcpiViewCommandLib). Therefore, I have
> kept them under ShellPkg/Include/Library/AcpiView.
> 
> I prefer to keep the whole parser as a standalone library. I like the
> idea to have a parser registration mechanism. But I don't think we need
> to expose the registration API outside of the UefiShellAcpiViewCommandLib.
> That's to say, anyone who wants to add parser for new tables can add a
> new function/file inside UefiShellAcpiViewCommandLib. In order for the
> main parser to call the new sub-parser, he can either directly modify
> the function table to add a new entry, or call a internal registration
> function which indirectly modifies the function table.
> 
> >
> >> Since per your comments, the interfaces are kept inside
> UefiShellAcpiViewCommandLib.
> >
> > [SAMI] It looks like I had not fully understood your #2 comment. I had a helper
> library for exposing the registration functions and common functionality. I
> moved this functionality to keep these interfaces inside
> UefiShellAcpiViewCommandLib.
> > However as explained above I have the common functionality implemented as
> part of the UefiShellAcpiViewCommandLib which is utilized by individual parsers.
> >
> > Considering the above I hope the patch OK. Alternatively, if you can advise me
> on a better way of achieving this, I will be happy to incorporate the changes.
> >
> > Regards,
> >
> > Sami Mujawar
> >
> > -----Original Message-----
> > From: Ni, Ruiyu [mailto:ruiyu.ni@Intel.com]
> > Sent: 24 February 2018 02:15 AM
> > To: Sami Mujawar <Sami.Mujawar@arm.com>; edk2-devel@lists.01.org
> > Cc: Evan Lloyd <Evan.Lloyd@arm.com>; leif.lindholm@linaro.org; Matteo
> Carlini <Matteo.Carlini@arm.com>; Stephanie Hughes-Fitt
> <Stephanie.Hughes-Fitt@arm.com>; nd <nd@arm.com>;
> jaben.carsey@intel.com; jiewen.yao@intel.com
> > Subject: Re: [PATCH v4] ShellPkg: Add acpiview tool to dump ACPI tables
> >
> > On 2/24/2018 12:44 AM, Sami Mujawar wrote:
> >> This program is provided to allow examination of ACPI table contents
> >> from the UEFI Shell.  This can help with investigations, especially at
> >> that stage where the tables are not enabling an OS to boot.
> >> The program is not exhaustive, and only encapsulates detailed knowledge
> >> of a limited number of table types.
> >>
> >> Default behaviour is to display the content of all tables installed.
> >> 'Known' table types will be parsed and displayed with descriptions and
> >> field values.  Where appropriate a degree of consistency checking is
> >> done and errors may be reported in the output.
> >> Other table types will be displayed as an array of Hexadecimal bytes.
> >>
> >> To facilitate debugging, the -s and -d options can be used to generate a
> >> binary file image of a table that can be copied elsewhere for
> >> investigation using tools such as those provided by acpica.org.  This is
> >> especially relevant for AML type tables like DSDT and SSDT.
> >>
> >> The inspiration for this is the existing smbiosview Debug1 Shell
> >> command.
> >>
> >> Many tables are not explicitly handled, in part because no examples are
> >> available for our testing.
> >>
> >> The program is designed to be extended to new tables with minimal
> >> effort, and contributions are invited.
> >>
> >> Contributed-under: TianoCore Contribution Agreement 1.1
> >> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
> >> Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
> >> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
> >> ---
> >>
> >> The updated changes can be viewed at:
> >> 	https://github.com/samimujawar/edk2/tree/188_acpiview_v4
> >>
> >> Notes:
> >>       v4:
> >>       - Firstly, public library APIs should have "EFIAPI" decorator.
> [RAY]
> >>       - Resubmitting updated patch with "EFIAPI" decorator.
> [SAMI]
> >>
> >>       - Secondly, I am wondering if it's possible to not expose any
> >>         library classes for handling of more ACPI tables.
> >>         I agree to implement UefiShellAcpiViewCommandLib in a way for
> easy
> >>         extension for handling of more ACPI tables, but I prefer to keep the
> >>         interfaces internally inside the UefiShellAcpiViewCommandLib.
> [RAY]
> >>       - Updated as suggested.
> [SAMI]
> >>
> >>       v3:
> >>       - Can the individual "child" libraries be placed into
> >>         subdirectories under UefiShellAcpiViewCommandLib directory
> >>         for clear separation?
> [JABEN]
> >>       - Patch updated to move individual "child" libraries into
> >>         subdirectories.
> [SAMI]
> >>
> >>       - In UefiShellAcpiViewCommandLib,c what's the motivation for all
> >>         the wrappers around print? I see that some are for memory access
> >>         restrictions, but the rest?  PrintGuid, looks the same as using
> >>         %g with Print()...
> [JABEN]
> >>       - The print wrappers enable a common styled formatted printing for
> >>         the ACPI fields. The ACPIview table parsing framework utilizes a
> >>         table-driven approach for parsing the tables and these functions
> >>         are invoked by the framework based on the field size and type.
> >>         However you are right, it is superfluous in the case of PrintGuid
> >>         (Which has now been removed in the updated patch).
> [SAMI]
> >>
> >>       - Do we want to change the main entrypoint to a DynamicCommand
> >>         since this command is not in the shell spec? If yes, do we want
> >>         to do that first or after?
> [JABEN]
> >>       - The ECR 1784 for ACPIview appears to be 'Approved as new content
> >>         for the Shell Spec.' in Mantis,
> >>         see https://mantis.uefi.org/mantis/view.php?id=1784.
> >>         As I understand it, the ECR change needs to be propagated to the
> >>         Shell specification and is pending. In light of the above, I think
> >>         that adding DynamicCommand support is not necessary. Please let
> me
> >>         know if you feel otherwise.
> [SAMI]
> >>
> >>    ShellPkg/Include/Library/AcpiView/AcpiParser.h
> | 449 ++++++++++++
> >>    ShellPkg/Include/Library/AcpiView/AcpiTableParser.h
> | 126 ++++
> >
> > Sami, should the above two new files be removed?
> > Since per your comments, the interfaces are kept inside
> > UefiShellAcpiViewCommandLib.
> >
> >>    ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
> | 662 +++++++++++++++++
> >>    ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiTableParser.c
> | 215 ++++++
> >>    ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.c
> | 601 ++++++++++++++++
> >>    ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.h
> | 103 +++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParser.c
> | 117 +++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2Parser.c
> | 287 ++++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2ParserLib.i
> nf  |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParser.c
> |  92 +++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParser.c
> | 309 ++++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
> | 338 +++++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParser.c
> | 745 ++++++++++++++++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParser.c
> | 358 ++++++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParserLib.i
> nf  |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParser.c
> | 139 ++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParserLib.in
> f  |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParser.c
> | 214 ++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParserLib.in
> f  |  33 +
> >>    ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParser.c
> | 187 +++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParser.c
> | 213 ++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c
> | 375 ++++++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParser.c
> |  92 +++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParser.c
> | 198 ++++++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParserLib.inf
> |  33 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLi
> b.c   | 106 +++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLi
> b.h   |  32 +
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLi
> b.inf |  60 ++
> >>
> ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLi
> b.uni | 127 ++++
> >>    ShellPkg/ShellPkg.dec
> |   3 +-
> >>    39 files changed, 6609 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/ShellPkg/Include/Library/AcpiView/AcpiParser.h
> b/ShellPkg/Include/Library/AcpiView/AcpiParser.h
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..14d75eeb9282a76492433
> e460a180dcc4cd14c4e
> >> --- /dev/null
> >> +++ b/ShellPkg/Include/Library/AcpiView/AcpiParser.h
> >> @@ -0,0 +1,449 @@
> >> +/**
> >> +  Header file for ACPI parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#ifndef ACPIPARSER_H_
> >> +#define ACPIPARSER_H_
> >> +
> >> +#define OUTPUT_FIELD_COLUMN_WIDTH  36
> >> +
> >> +/// The RSDP table signature is "RSD PTR " (8 bytes)
> >> +/// However The signature for ACPI tables is 4 bytes.
> >> +/// To work around this oddity define a signature type
> >> +/// that allows us to process the log options.
> >> +#define RSDP_TABLE_INFO  SIGNATURE_32('R', 'S', 'D', 'P')
> >> +
> >> +/** This function increments the ACPI table error counter.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +IncrementErrorCount (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function increments the ACPI table warning counter.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +IncrementWarningCount (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function verifies the ACPI table checksum.
> >> +
> >> +  This function verifies the checksum for the ACPI table and optionally
> >> +  prints the status.
> >> +
> >> +  @param [in] Log     If TRUE log the status of the checksum.
> >> +  @param [in] Ptr     Pointer to the start of the table buffer.
> >> +  @param [in] Length  The length of the buffer.
> >> +
> >> +  @retval TRUE         The checksum is OK.
> >> +  @retval FALSE        The checksum failed.
> >> +*/
> >> +BOOLEAN
> >> +EFIAPI
> >> +VerifyChecksum (
> >> +  IN BOOLEAN Log,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  Length
> >> +  );
> >> +
> >> +/** This function performs a raw data dump of the ACPI table.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the table buffer.
> >> +  @param [in] Length  The length of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpRaw (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT32 Length
> >> +  );
> >> +
> >> +/** This function traces 1 byte of datum as specified in the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint8 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 2 bytes of data as specified in the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint16 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 4 bytes of data as specified in the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint32 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 8 bytes of data as specified by the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint64 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 3 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump3Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 4 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump4Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 6 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump6Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces 8 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump8Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function indents and prints the ACPI table Field Name.
> >> +
> >> +  @param [in] Indent      Number of spaces to add to the global table
> >> +                          indent. The global table indent is 0 by default;
> >> +                          however this value is updated on entry to the
> >> +                          ParseAcpi() by adding the indent value
> provided to
> >> +                          ParseAcpi() and restored back on exit.
> Therefore
> >> +                          the total indent in the output is dependent on
> from
> >> +                          where this function is called.
> >> +  @param [in] FieldName   Pointer to the Field Name.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +PrintFieldName (
> >> +  IN UINT32         Indent,
> >> +  IN CONST CHAR16*  FieldName
> >> +);
> >> +
> >> +/** This function pointer is the template for customizing the trace output
> >> +
> >> +  @param [in] Format  Format string for tracing the data as specified by
> >> +                      the 'Format' member of ACPI_PARSER.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +typedef VOID (EFIAPI *FNPTR_PRINT_FORMATTER)(CONST CHAR16*
> Format, UINT8* Ptr);
> >> +
> >> +/** This function pointer is the template for validating an ACPI table field.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information as specified
> by
> >> +                      the 'Context' member of the ACPI_PARSER.
> >> +                      e.g. this could be a pointer to the ACPI table
> header.
> >> +*/
> >> +typedef VOID (EFIAPI *FNPTR_FIELD_VALIDATOR)(UINT8* Ptr, VOID*
> Context);
> >> +
> >> +/** The ACPI_PARSER structure describes the fields of an ACPI table and
> >> +    provides means for the parser to interpret and trace appropriately.
> >> +
> >> +  The first three members are populated based on information present in
> >> +  in the ACPI table specifications. The remaining members describe how
> >> +  the parser should report the field information, validate the field data
> >> +  and/or update an external pointer to the field (ItemPtr).
> >> +
> >> +  ParseAcpi() uses the format string specified by 'Format' for tracing
> >> +  the field data. If the field is more complex and requires additional
> >> +  processing for formatting and representation a print formatter function
> >> +  can be specified in 'PrintFormatter'.
> >> +  The PrintFormatter function may choose to use the format string
> >> +  specified by 'Format' or use its own internal format string.
> >> +
> >> +  The 'Format' and 'PrintFormatter' members allow flexibility for
> >> +  representing the field data.
> >> +*/
> >> +typedef struct AcpiParser {
> >> +
> >> +  /// String describing the ACPI table field
> >> +  /// (Field column from ACPI table spec)
> >> +  CONST CHAR16*         NameStr;
> >> +
> >> +  /// The length of the field.
> >> +  /// (Byte Length column from ACPI table spec)
> >> +  UINT32                Length;
> >> +
> >> +  /// The offset of the field from the start of the table.
> >> +  /// (Byte Offset column from ACPI table spec)
> >> +  UINT32                Offset;
> >> +
> >> +  /// Optional Print() style format string for tracing the data. If not
> >> +  /// used this must be set to NULL.
> >> +  CONST CHAR16*         Format;
> >> +
> >> +  /// Optional pointer to a print formatter function which
> >> +  /// is typically used to trace complex field information.
> >> +  /// If not used this must be set to NULL.
> >> +  /// The Format string is passed to the PrintFormatter function
> >> +  /// but may be ignored by the implementation code.
> >> +  FNPTR_PRINT_FORMATTER PrintFormatter;
> >> +
> >> +  /// Optional pointer which may be set to request the parser to update
> >> +  /// a pointer to the field data. If unused this must be set to NULL.
> >> +  VOID**                ItemPtr;
> >> +
> >> +  /// Optional pointer to a field validator function.
> >> +  /// The function should directly report any appropriate error or warning
> >> +  /// and invoke the appropriate counter update function.
> >> +  /// If not used this parameter must be set to NULL.
> >> +  FNPTR_FIELD_VALIDATOR FieldValidator;
> >> +
> >> +  /// Optional pointer to context specific information,
> >> +  /// which the Field Validator function can use to determine
> >> +  /// additional information about the ACPI table and make
> >> +  /// decisions about the field being validated.
> >> +  /// e.g. this could be a pointer to the ACPI table header
> >> +  VOID*                 Context;
> >> +} ACPI_PARSER;
> >> +
> >> +/** A structure used to store the pointers to the members of the
> >> +    ACPI description header structure that was parsed.
> >> +*/
> >> +typedef struct AcpiDescriptionHeaderInfo {
> >> +  /// ACPI table signature
> >> +  UINT32* Signature;
> >> +  /// Length of the ACPI table
> >> +  UINT32* Length;
> >> +  /// Revision
> >> +  UINT8*  Revision;
> >> +  /// Checksum
> >> +  UINT8*  Checksum;
> >> +  /// OEM Id - length is 6 bytes
> >> +  UINT8*  OemId;
> >> +  /// OEM table Id
> >> +  UINT64* OemTableId;
> >> +  /// OEM revision Id
> >> +  UINT32* OemRevision;
> >> +  /// Creator Id
> >> +  UINT32* CreatorId;
> >> +  /// Creator revision
> >> +  UINT32* CreatorRevision;
> >> +} ACPI_DESCRIPTION_HEADER_INFO;
> >> +
> >> +/** This function is used to parse an ACPI table buffer.
> >> +
> >> +  The ACPI table buffer is parsed using the ACPI table parser information
> >> +  specified by a pointer to an array of ACPI_PARSER elements. This parser
> >> +  function iterates through each item on the ACPI_PARSER array and logs
> the
> >> +  ACPI table fields.
> >> +
> >> +  This function can optionally be used to parse ACPI tables and fetch specific
> >> +  field values. The ItemPtr member of the ACPI_PARSER structure (where
> used)
> >> +  is updated by this parser function to point to the selected field data
> >> +  (e.g. useful for variable length nested fields).
> >> +
> >> +  @param [in] Trace        Trace the ACPI fields TRUE else only parse the
> >> +                           table.
> >> +  @param [in] Indent       Number of spaces to indent the output.
> >> +  @param [in] AsciiName    Optional pointer to an ASCII string that
> describes
> >> +                           the table being parsed.
> >> +  @param [in] Ptr          Pointer to the start of the buffer.
> >> +  @param [in] Length       Length of the buffer pointed by Ptr.
> >> +  @param [in] Parser       Pointer to an array of ACPI_PARSER structure
> that
> >> +                           describes the table being parsed.
> >> +  @param [in] ParserItems  Number of items in the ACPI_PARSER array.
> >> +
> >> +  @retval Number of bytes parsed.
> >> +*/
> >> +UINT32
> >> +EFIAPI
> >> +ParseAcpi (
> >> +  IN BOOLEAN            Trace,
> >> +  IN UINT32             Indent,
> >> +  IN CONST CHAR8*       AsciiName OPTIONAL,
> >> +  IN UINT8*             Ptr,
> >> +  IN UINT32             Length,
> >> +  IN CONST ACPI_PARSER* Parser,
> >> +  IN UINT32             ParserItems
> >> +);
> >> +
> >> +/** This is a helper macro to pass parameters to the Parser functions.
> >> +
> >> +  @param [in] Parser The name of the ACPI_PARSER array describing the
> >> +              ACPI table fields.
> >> +*/
> >> +#define PARSER_PARAMS(Parser) Parser, sizeof (Parser) / sizeof (Parser[0])
> >> +
> >> +/** This is a helper macro for describing the ACPI header fields.
> >> +
> >> +  @param [out] Info  Pointer to retrieve the ACPI table header
> information.
> >> +*/
> >> +#define PARSE_ACPI_HEADER(Info)                   \
> >> +  { L"Signature", 4, 0, NULL, Dump4Chars,         \
> >> +    (VOID**)&(Info)->Signature , NULL, NULL },    \
> >> +  { L"Length", 4, 4, L"%d", NULL,                 \
> >> +    (VOID**)&(Info)->Length, NULL, NULL },        \
> >> +  { L"Revision", 1, 8, L"%d", NULL,               \
> >> +    (VOID**)&(Info)->Revision, NULL, NULL },      \
> >> +  { L"Checksum", 1, 9, L"0x%X", NULL,             \
> >> +    (VOID**)&(Info)->Checksum, NULL, NULL },      \
> >> +  { L"Oem ID", 6, 10, NULL, Dump6Chars,           \
> >> +    (VOID**)&(Info)->OemId, NULL, NULL },         \
> >> +  { L"Oem Table ID", 8, 16, NULL, Dump8Chars,     \
> >> +    (VOID**)&(Info)->OemTableId, NULL, NULL },    \
> >> +  { L"Oem Revision", 4, 24, L"0x%X", NULL,        \
> >> +    (VOID**)&(Info)->OemRevision, NULL, NULL },   \
> >> +  { L"Creator ID", 4, 28, NULL, Dump4Chars,       \
> >> +    (VOID**)&(Info)->CreatorId, NULL, NULL },     \
> >> +  { L"Creator Revision", 4, 32, L"0x%X", NULL,    \
> >> +    (VOID**)&(Info)->CreatorRevision, NULL, NULL }
> >> +
> >> +/** Length of the ACPI GAS structure.
> >> +
> >> +  NOTE: This might normally be defined as
> >> +        sizeof (EFI_ACPI_6_2_GENERIC_ADDRESS_STRUCTURE).
> >> +        However, we deliberately minimise any reference to the EDK2 ACPI
> >> +        headers in an attempt to provide cross checking.
> >> +*/
> >> +#define GAS_LENGTH                     12
> >> +
> >> +/** Length of the ACPI Header structure.
> >> +
> >> +  NOTE: This might normally be defined as
> >> +        sizeof (EFI_ACPI_DESCRIPTION_HEADER).
> >> +        However, we deliberately minimise any reference to the EDK2 ACPI
> >> +        headers in an attempt to provide cross checking.
> >> +*/
> >> +#define ACPI_DESCRIPTION_HEADER_LENGTH  36
> >> +
> >> +/** This function indents and traces the GAS structure as described
> >> +    by the GasParser.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +  @param [in] Indent  Number of spaces to indent the output.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpGasStruct (
> >> +  IN UINT8*        Ptr,
> >> +  IN UINT32        Indent
> >> +  );
> >> +
> >> +/** This function traces the GAS structure as described by the GasParser.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpGas (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  );
> >> +
> >> +/** This function traces the ACPI header as described by the
> AcpiHeaderParser.
> >> +
> >> +  @param [in] Ptr          Pointer to the start of the buffer.
> >> +
> >> +  @retval Number of bytes parsed.
> >> +*/
> >> +UINT32
> >> +EFIAPI
> >> +DumpAcpiHeader (
> >> +  IN UINT8* Ptr
> >> +  );
> >> +
> >> +/** This function parses the ACPI header as described by the
> AcpiHeaderParser.
> >> +
> >> +  This function optionally returns the Signature, Length and revision of the
> >> +  ACPI table.
> >> +
> >> +  @param [in]  Ptr        Pointer to the start of the buffer.
> >> +  @param [out] Signature  Gets location of the ACPI table signature.
> >> +  @param [out] Length     Gets location of the length of the ACPI table.
> >> +  @param [out] Revision   Gets location of the revision of the ACPI table.
> >> +
> >> +  @retval Number of bytes parsed.
> >> +*/
> >> +UINT32
> >> +EFIAPI
> >> +ParseAcpiHeader (
> >> +  IN  UINT8*         Ptr,
> >> +  OUT CONST UINT32** Signature,
> >> +  OUT CONST UINT32** Length,
> >> +  OUT CONST UINT8**  Revision
> >> +  );
> >> +
> >> +#endif // ACPIPARSER_H_
> >> diff --git a/ShellPkg/Include/Library/AcpiView/AcpiTableParser.h
> b/ShellPkg/Include/Library/AcpiView/AcpiTableParser.h
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..a69d56da6cf728bb98df2
> 65de3ae030d85120494
> >> --- /dev/null
> >> +++ b/ShellPkg/Include/Library/AcpiView/AcpiTableParser.h
> >> @@ -0,0 +1,126 @@
> >> +/**
> >> +  Header file for ACPI table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#ifndef ACPITABLEPARSER_H_
> >> +#define ACPITABLEPARSER_H_
> >> +
> >> +/** The maximum number of ACPI table parsers.
> >> +*/
> >> +#define MAX_ACPI_TABLE_PARSERS          16
> >> +
> >> +/** An invalid/NULL signature value.
> >> +*/
> >> +#define ACPI_PARSER_SIGNATURE_NULL      0
> >> +
> >> +/** A function that parses the ACPI table.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +typedef
> >> +VOID
> >> +(EFIAPI * PARSE_ACPI_TABLE_PROC) (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  );
> >> +
> >> +/** The ACPI table parser information
> >> +*/
> >> +typedef struct AcpiTableParser {
> >> +  /// ACPI table signature
> >> +  UINT32                  Signature;
> >> +
> >> +  /// The ACPI table parser function.
> >> +  PARSE_ACPI_TABLE_PROC   Parser;
> >> +} ACPI_TABLE_PARSER;
> >> +
> >> +/** Register the ACPI table Parser
> >> +
> >> +  This function registers the ACPI table parser.
> >> +
> >> +  @param [in] Signature   The ACPI table signature.
> >> +  @param [in] ParserProc  The ACPI table parser.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the Table
> >> +                                was already registered.
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +RegisterParser (
> >> +  IN  UINT32                  Signature,
> >> +  IN  PARSE_ACPI_TABLE_PROC   ParserProc
> >> +);
> >> +
> >> +/** Deregister the ACPI table Parser
> >> +
> >> +  This function deregisters the ACPI table parser.
> >> +
> >> +  @param [in] Signature   The ACPI table signature.
> >> +
> >> +  @retval EFI_SUCCESS           The parser was deregistered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid.
> >> +  @retval EFI_NOT_FOUND         A registered parser was not found.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +DeregisterParser (
> >> +  IN  UINT32                  Signature
> >> +);
> >> +
> >> +/** This function processes the ACPI tables.
> >> +  This function calls ProcessTableReportOptions() to list the ACPI
> >> +  tables, perform binary dump of the tables and determine if the
> >> +  ACPI fields should be traced.
> >> +
> >> +  This function also invokes the parser for the ACPI tables.
> >> +
> >> +  This function also performs a RAW dump of the ACPI table including
> >> +  the unknown/unparsed ACPI tables and validates the checksum.
> >> +
> >> +  @param [in] Ptr                Pointer to the start of the ACPI
> >> +                                 table data buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ProcessAcpiTable (
> >> +  IN UINT8* Ptr
> >> +  );
> >> +
> >> +/** Get the ACPI table Parser
> >> +
> >> +  This function returns the ACPI table parser proc from the list of
> >> +  registered parsers.
> >> +
> >> +  @param [in]  Signature   The ACPI table signature.
> >> +  @param [out] ParserProc  Pointer to a ACPI table parser proc.
> >> +
> >> +  @retval EFI_SUCCESS           The parser was returned successfully.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid.
> >> +  @retval EFI_NOT_FOUND         A registered parser was not found.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +GetParser (
> >> +  IN  UINT32                   Signature,
> >> +  OUT PARSE_ACPI_TABLE_PROC *  ParserProc
> >> +  );
> >> +
> >> +#endif // ACPITABLEPARSER_H_
> >> diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..89712066e632b43c5023a
> cd9c8b5bec150e02d9f
> >> --- /dev/null
> >> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
> >> @@ -0,0 +1,662 @@
> >> +/**
> >> +  ACPI parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#include <Uefi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/UefiBootServicesTableLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include "AcpiView.h"
> >> +
> >> +STATIC UINT32   gIndent;
> >> +STATIC UINT32   mTableErrorCount;
> >> +STATIC UINT32   mTableWarningCount;
> >> +
> >> +/** This function resets the ACPI table error counter to Zero.
> >> +*/
> >> +VOID
> >> +ResetErrorCount (
> >> +  VOID
> >> +  )
> >> +{
> >> +  mTableErrorCount = 0;
> >> +}
> >> +
> >> +/** This function returns the ACPI table error count.
> >> +
> >> +  @retval Returns the count of errors detected in the ACPI tables.
> >> +*/
> >> +UINT32
> >> +GetErrorCount (
> >> +  VOID
> >> +  )
> >> +{
> >> +  return mTableErrorCount;
> >> +}
> >> +
> >> +/** This function resets the ACPI table warning counter to Zero.
> >> +*/
> >> +VOID
> >> +ResetWarningCount (
> >> +  VOID
> >> +  )
> >> +{
> >> +  mTableWarningCount = 0;
> >> +}
> >> +
> >> +/** This function returns the ACPI table warning count.
> >> +
> >> +  @retval Returns the count of warning detected in the ACPI tables.
> >> +*/
> >> +UINT32
> >> +GetWarningCount (
> >> +  VOID
> >> +  )
> >> +{
> >> +  return mTableWarningCount;
> >> +}
> >> +
> >> +/** This function increments the ACPI table error counter.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +IncrementErrorCount (
> >> +  VOID
> >> +  )
> >> +{
> >> +  mTableErrorCount++;
> >> +}
> >> +
> >> +/** This function increments the ACPI table warning counter.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +IncrementWarningCount (
> >> +  VOID
> >> +  )
> >> +{
> >> +  mTableWarningCount++;
> >> +}
> >> +
> >> +/** This function verifies the ACPI table checksum.
> >> +
> >> +  This function verifies the checksum for the ACPI table and optionally
> >> +  prints the status.
> >> +
> >> +  @param [in] Log     If TRUE log the status of the checksum.
> >> +  @param [in] Ptr     Pointer to the start of the table buffer.
> >> +  @param [in] Length  The length of the buffer.
> >> +
> >> +  @retval TRUE        The checksum is OK.
> >> +  @retval FALSE       The checksum failed.
> >> +*/
> >> +BOOLEAN
> >> +EFIAPI
> >> +VerifyChecksum (
> >> +  IN BOOLEAN Log,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  Length
> >> +  )
> >> +{
> >> +  UINTN ByteCount = 0;
> >> +  UINT8 Checksum = 0;
> >> +  UINTN OriginalAttribute;
> >> +
> >> +  while (ByteCount < Length) {
> >> +    Checksum += *(Ptr++);
> >> +    ByteCount++;
> >> +  }
> >> +
> >> +  if (Log) {
> >> +    OriginalAttribute = gST->ConOut->Mode->Attribute;
> >> +    if (Checksum == 0) {
> >> +      if (GetColourHighlighting ()) {
> >> +        gST->ConOut->SetAttribute (
> >> +                       gST->ConOut,
> >> +                       EFI_TEXT_ATTR (EFI_GREEN,
> >> +                         ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))
> >> +                       );
> >> +      }
> >> +      Print (L"\n\nTable Checksum : OK\n\n");
> >> +    } else {
> >> +      IncrementErrorCount ();
> >> +      if (GetColourHighlighting ()) {
> >> +        gST->ConOut->SetAttribute (
> >> +                       gST->ConOut,
> >> +                       EFI_TEXT_ATTR (EFI_RED,
> >> +                         ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))
> >> +                       );
> >> +      }
> >> +      Print (L"\n\nTable Checksum : FAILED (0x%X)\n\n", Checksum);
> >> +    }
> >> +    if (GetColourHighlighting ()) {
> >> +      gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);
> >> +    }
> >> +  }
> >> +
> >> +  return (Checksum == 0);
> >> +}
> >> +
> >> +/** This function performs a raw data dump of the ACPI table.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the table buffer.
> >> +  @param [in] Length  The length of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpRaw (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT32 Length
> >> +  )
> >> +{
> >> +  UINTN ByteCount = 0;
> >> +  UINTN PartLineChars;
> >> +  UINTN AsciiBufferIndex = 0;
> >> +  CHAR8 AsciiBuffer[17];
> >> +
> >> +  Print (L"Address  : 0x%p\n", Ptr);
> >> +  Print (L"Length   : %d\n", Length);
> >> +
> >> +  while (ByteCount < Length) {
> >> +    if ((ByteCount & 0x0F) == 0) {
> >> +      AsciiBuffer[AsciiBufferIndex] = '\0';
> >> +      Print (L"  %a\n%08X : ", AsciiBuffer, ByteCount);
> >> +      AsciiBufferIndex = 0;
> >> +    } else if ((ByteCount & 0x07) == 0) {
> >> +      Print (L"- ");
> >> +    }
> >> +
> >> +    if ((*Ptr >= ' ') && (*Ptr < 0x7F)) {
> >> +      AsciiBuffer[AsciiBufferIndex++] = *Ptr;
> >> +    } else {
> >> +      AsciiBuffer[AsciiBufferIndex++] = '.';
> >> +    }
> >> +
> >> +    Print (L"%02X ", *Ptr++);
> >> +
> >> +    ByteCount++;
> >> +  }
> >> +
> >> +  // Justify the final line using spaces before printing
> >> +  // the ASCII data.
> >> +  PartLineChars = (Length & 0x0F);
> >> +  if (PartLineChars != 0) {
> >> +    PartLineChars = 48 - (PartLineChars * 3);
> >> +    if ((Length & 0x0F) <= 8) {
> >> +      PartLineChars += 2;
> >> +    }
> >> +    while (PartLineChars > 0) {
> >> +      Print (L" ");
> >> +      PartLineChars--;
> >> +    }
> >> +  }
> >> +
> >> +  // Print ASCII data for the final line.
> >> +  AsciiBuffer[AsciiBufferIndex] = '\0';
> >> +  Print (L"  %a", AsciiBuffer);
> >> +}
> >> +
> >> +/** This function traces 1 byte of data as specified in the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint8 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (Format, *Ptr);
> >> +}
> >> +
> >> +/** This function traces 2 bytes of data as specified in the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint16 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (Format, *(UINT16*)Ptr);
> >> +}
> >> +
> >> +/** This function traces 4 bytes of data as specified in the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint32 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (Format, *(UINT32*)Ptr);
> >> +}
> >> +
> >> +/** This function traces 8 bytes of data as specified by the
> >> +    format string.
> >> +
> >> +  @param [in] Format  The format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpUint64 (
> >> +  IN CONST CHAR16* Format,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  // Some fields are not aligned and this causes alignment faults
> >> +  // on ARM platforms if the compiler generates LDRD instructions.
> >> +  // Perform word access so that LDRD instructions are not generated.
> >> +  UINT64 Val = *(UINT32*)(Ptr + sizeof (UINT32));
> >> +  Val <<= 32;
> >> +  Val |= *(UINT32*)Ptr;
> >> +
> >> +  Print (Format, Val);
> >> +}
> >> +
> >> +/** This function traces 3 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump3Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (
> >> +    (Format != NULL) ? Format : L"%c%c%c",
> >> +    Ptr[0],
> >> +    Ptr[1],
> >> +    Ptr[2]
> >> +    );
> >> +}
> >> +
> >> +/** This function traces 4 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump4Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (
> >> +    (Format != NULL) ? Format : L"%c%c%c%c",
> >> +    Ptr[0],
> >> +    Ptr[1],
> >> +    Ptr[2],
> >> +    Ptr[3]
> >> +    );
> >> +}
> >> +
> >> +/** This function traces 6 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump6Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (
> >> +    (Format != NULL) ? Format : L"%c%c%c%c%c%c",
> >> +    Ptr[0],
> >> +    Ptr[1],
> >> +    Ptr[2],
> >> +    Ptr[3],
> >> +    Ptr[4],
> >> +    Ptr[5]
> >> +    );
> >> +}
> >> +
> >> +/** This function traces 8 characters which can be optionally
> >> +   formated using the format string if specified.
> >> +
> >> +  If no format string is specified the Format must be NULL.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +Dump8Chars (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  Print (
> >> +    (Format != NULL) ? Format : L"%c%c%c%c%c%c%c%c",
> >> +    Ptr[0],
> >> +    Ptr[1],
> >> +    Ptr[2],
> >> +    Ptr[3],
> >> +    Ptr[4],
> >> +    Ptr[5],
> >> +    Ptr[6],
> >> +    Ptr[7]
> >> +    );
> >> +}
> >> +
> >> +/** This function indents and prints the ACPI table Field Name.
> >> +
> >> +  @param [in] Indent      Number of spaces to add to the global table
> indent.
> >> +                          The global table indent is 0 by default;
> however
> >> +                          this value is updated on entry to the
> ParseAcpi()
> >> +                          by adding the indent value provided to
> ParseAcpi()
> >> +                          and restored back on exit.
> >> +                          Therefore the total indent in the output is
> >> +                          dependent on from where this function is
> called.
> >> +  @param [in] FieldName   Pointer to the Field Name.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +PrintFieldName (
> >> +  IN UINT32         Indent,
> >> +  IN CONST CHAR16*  FieldName
> >> +)
> >> +{
> >> +  Print (
> >> +    L"%*a%-*s : ",
> >> +    gIndent + Indent,
> >> +    "",
> >> +    (OUTPUT_FIELD_COLUMN_WIDTH - gIndent - Indent),
> >> +    FieldName
> >> +    );
> >> +}
> >> +
> >> +/** This function is used to parse an ACPI table buffer.
> >> +
> >> +  The ACPI table buffer is parsed using the ACPI table parser information
> >> +  specified by a pointer to an array of ACPI_PARSER elements. This parser
> >> +  function iterates through each item on the ACPI_PARSER array and logs
> the
> >> +  ACPI table fields.
> >> +
> >> +  This function can optionally be used to parse ACPI tables and fetch specific
> >> +  field values. The ItemPtr member of the ACPI_PARSER structure (where
> used)
> >> +  is updated by this parser function to point to the selected field data
> >> +  (e.g. useful for variable length nested fields).
> >> +
> >> +  @param [in] Trace        Trace the ACPI fields TRUE else only parse the
> >> +                           table.
> >> +  @param [in] Indent       Number of spaces to indent the output.
> >> +  @param [in] AsciiName    Optional pointer to an ASCII string that
> describes
> >> +                           the table being parsed.
> >> +  @param [in] Ptr          Pointer to the start of the buffer.
> >> +  @param [in] Length       Length of the buffer pointed by Ptr.
> >> +  @param [in] Parser       Pointer to an array of ACPI_PARSER structure
> that
> >> +                           describes the table being parsed.
> >> +  @param [in] ParserItems  Number of items in the ACPI_PARSER array.
> >> +
> >> +  @retval Number of bytes parsed.
> >> +*/
> >> +UINT32
> >> +EFIAPI
> >> +ParseAcpi (
> >> +  IN BOOLEAN            Trace,
> >> +  IN UINT32             Indent,
> >> +  IN CONST CHAR8*       AsciiName OPTIONAL,
> >> +  IN UINT8*             Ptr,
> >> +  IN UINT32             Length,
> >> +  IN CONST ACPI_PARSER* Parser,
> >> +  IN UINT32             ParserItems
> >> +)
> >> +{
> >> +  UINT32  Index;
> >> +  UINT32  Offset = 0;
> >> +
> >> +  // Increment the Indent
> >> +  gIndent += Indent;
> >> +
> >> +  if (Trace && (AsciiName != NULL)){
> >> +    BOOLEAN HighLight = GetColourHighlighting ();
> >> +    UINTN   OriginalAttribute;
> >> +
> >> +    if (HighLight) {
> >> +      OriginalAttribute = gST->ConOut->Mode->Attribute;
> >> +      gST->ConOut->SetAttribute (
> >> +                     gST->ConOut,
> >> +                     EFI_TEXT_ATTR(EFI_YELLOW,
> >> +                       ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))
> >> +                     );
> >> +    }
> >> +    Print (
> >> +      L"%*a%-*a :\n",
> >> +      gIndent,
> >> +      "",
> >> +      (OUTPUT_FIELD_COLUMN_WIDTH - gIndent),
> >> +      AsciiName
> >> +      );
> >> +    if (HighLight) {
> >> +      gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);
> >> +    }
> >> +  }
> >> +
> >> +  for (Index = 0; Index < ParserItems; Index++) {
> >> +    if ((Offset + Parser[Index].Length) > Length) {
> >> +      // We don't parse past the end of the max length specified
> >> +      break;
> >> +    }
> >> +
> >> +    if (Offset != Parser[Index].Offset) {
> >> +      IncrementErrorCount ();
> >> +      Print (
> >> +        L"\nERROR: %a: Offset Mismatch for %s\n"
> >> +          "CurrentOffset = %d FieldOffset = %d\n",
> >> +        AsciiName,
> >> +        Parser[Index].NameStr,
> >> +        Offset,
> >> +        Parser[Index].Offset
> >> +        );
> >> +    }
> >> +
> >> +    if (Trace) {
> >> +      // if there is a Formatter function let the function handle
> >> +      // the printing else if a Format is specified in the table use
> >> +      // the Format for printing
> >> +      PrintFieldName (2, Parser[Index].NameStr);
> >> +      if (Parser[Index].PrintFormatter != NULL) {
> >> +        Parser[Index].PrintFormatter (Parser[Index].Format, Ptr);
> >> +      } else if (Parser[Index].Format != NULL) {
> >> +        switch (Parser[Index].Length) {
> >> +          case 1:
> >> +            DumpUint8 (Parser[Index].Format, Ptr);
> >> +            break;
> >> +          case 2:
> >> +            DumpUint16 (Parser[Index].Format, Ptr);
> >> +            break;
> >> +          case 4:
> >> +            DumpUint32 (Parser[Index].Format, Ptr);
> >> +            break;
> >> +          case 8:
> >> +            DumpUint64 (Parser[Index].Format, Ptr);
> >> +            break;
> >> +          default:
> >> +            Print (
> >> +              L"\nERROR: %a: CANNOT PARSE THIS FIELD, Field Length
> = %d\n",
> >> +              AsciiName,
> >> +              Parser[Index].Length
> >> +              );
> >> +        } // switch
> >> +
> >> +        // Validating only makes sense if we are tracing
> >> +        // the parsed table entries, to report by table name.
> >> +        if (Parser[Index].FieldValidator != NULL) {
> >> +          Parser[Index].FieldValidator (Ptr, Parser[Index].Context);
> >> +        }
> >> +      }
> >> +      Print (L"\n");
> >> +    } // if (Trace)
> >> +
> >> +    if (Parser[Index].ItemPtr != NULL) {
> >> +      *Parser[Index].ItemPtr = (VOID*)Ptr;
> >> +    }
> >> +
> >> +    Ptr += Parser[Index].Length;
> >> +    Offset += Parser[Index].Length;
> >> +  } // for
> >> +
> >> +  // Decrement the Indent
> >> +  gIndent -= Indent;
> >> +  return Offset;
> >> +}
> >> +
> >> +/** An array describing the ACPI Generic Address Structure.
> >> +  The GasParser array is used by the ParseAcpi function to parse and/or
> trace
> >> +  the GAS structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GasParser[] = {
> >> +  {L"Address Space ID", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Register Bit Width", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Register Bit Offset", 1, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Address Size", 1, 3, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function indents and traces the GAS structure as described
> >> +    by the GasParser.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +  @param [in] Indent  Number of spaces to indent the output.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpGasStruct (
> >> +  IN UINT8*        Ptr,
> >> +  IN UINT32        Indent
> >> +  )
> >> +{
> >> +  Print (L"\n");
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    Indent,
> >> +    NULL,
> >> +    Ptr,
> >> +    GAS_LENGTH,
> >> +    PARSER_PARAMS (GasParser)
> >> +    );
> >> +}
> >> +
> >> +/** This function traces the GAS structure as described by the GasParser.
> >> +
> >> +  @param [in] Format  Optional format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +DumpGas (
> >> +  IN CONST CHAR16* Format OPTIONAL,
> >> +  IN UINT8*        Ptr
> >> +  )
> >> +{
> >> +  DumpGasStruct (Ptr, 2);
> >> +}
> >> +
> >> +/** This function traces the ACPI header as described by the
> AcpiHeaderParser.
> >> +
> >> +  @param [in] Ptr          Pointer to the start of the buffer.
> >> +
> >> +  @retval Number of bytes parsed.
> >> +*/
> >> +UINT32
> >> +EFIAPI
> >> +DumpAcpiHeader (
> >> +  IN UINT8* Ptr
> >> +  )
> >> +{
> >> +  ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +  ACPI_PARSER AcpiHeaderParser[] = {
> >> +    PARSE_ACPI_HEADER (&AcpiHdrInfo)
> >> +  };
> >> +
> >> +  return ParseAcpi (
> >> +           TRUE,
> >> +           0,
> >> +           "ACPI Table Header",
> >> +           Ptr,
> >> +           ACPI_DESCRIPTION_HEADER_LENGTH,
> >> +           PARSER_PARAMS (AcpiHeaderParser)
> >> +           );
> >> +}
> >> +
> >> +/** This function parses the ACPI header as described by the
> AcpiHeaderParser.
> >> +
> >> +  This function optionally returns the signature, length and revision of the
> >> +  ACPI table.
> >> +
> >> +  @param [in]  Ptr        Pointer to the start of the buffer.
> >> +  @param [out] Signature  Gets location of the ACPI table signature.
> >> +  @param [out] Length     Gets location of the length of the ACPI table.
> >> +  @param [out] Revision   Gets location of the revision of the ACPI table.
> >> +
> >> +  @retval Number of bytes parsed.
> >> +*/
> >> +UINT32
> >> +EFIAPI
> >> +ParseAcpiHeader (
> >> +  IN  UINT8*         Ptr,
> >> +  OUT CONST UINT32** Signature,
> >> +  OUT CONST UINT32** Length,
> >> +  OUT CONST UINT8**  Revision
> >> +  )
> >> +{
> >> +  UINT32                        BytesParsed;
> >> +  ACPI_DESCRIPTION_HEADER_INFO  AcpiHdrInfo;
> >> +  ACPI_PARSER AcpiHeaderParser[] = {
> >> +    PARSE_ACPI_HEADER (&AcpiHdrInfo)
> >> +  };
> >> +
> >> +  BytesParsed = ParseAcpi (
> >> +                  FALSE,
> >> +                  0,
> >> +                  NULL,
> >> +                  Ptr,
> >> +                  ACPI_DESCRIPTION_HEADER_LENGTH,
> >> +                  PARSER_PARAMS (AcpiHeaderParser)
> >> +                  );
> >> +
> >> +  *Signature = AcpiHdrInfo.Signature;
> >> +  *Length = AcpiHdrInfo.Length;
> >> +  *Revision = AcpiHdrInfo.Revision;
> >> +
> >> +  return BytesParsed;
> >> +}
> >> diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiTableParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiTableParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..5983ee21129b0c40e19d7
> 41fb61359a23ee622d0
> >> --- /dev/null
> >> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiTableParser.c
> >> @@ -0,0 +1,215 @@
> >> +/**
> >> +  ACPI table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#include <Uefi.h>
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +#include "AcpiView.h"
> >> +
> >> +/** A list of registered ACPI table parsers.
> >> +*/
> >> +STATIC ACPI_TABLE_PARSER mTableParserList[MAX_ACPI_TABLE_PARSERS];
> >> +
> >> +/** Register the ACPI table Parser
> >> +
> >> +  This function registers the ACPI table parser.
> >> +
> >> +  @param [in] Signature   The ACPI table signature.
> >> +  @param [in] ParserProc  The ACPI table parser.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the Table
> >> +                                was already registered.
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +RegisterParser (
> >> +  IN  UINT32                  Signature,
> >> +  IN  PARSE_ACPI_TABLE_PROC   ParserProc
> >> +  )
> >> +{
> >> +  UINT32 index;
> >> +
> >> +  if ((ParserProc == NULL) || (Signature ==
> ACPI_PARSER_SIGNATURE_NULL)) {
> >> +    return EFI_INVALID_PARAMETER;
> >> +  }
> >> +
> >> +  // Search if a parser is already installed
> >> +  for (index = 0;
> >> +       index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));
> >> +       index++)
> >> +  {
> >> +    if (Signature == mTableParserList[index].Signature) {
> >> +      if (mTableParserList[index].Parser != NULL) {
> >> +        return EFI_ALREADY_STARTED;
> >> +      }
> >> +    }
> >> +  }
> >> +
> >> +  // Find the first free slot and register the parser
> >> +  for (index = 0;
> >> +      index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));
> >> +      index++)
> >> +  {
> >> +    if (mTableParserList[index].Signature ==
> ACPI_PARSER_SIGNATURE_NULL) {
> >> +      mTableParserList[index].Signature = Signature;
> >> +      mTableParserList[index].Parser = ParserProc;
> >> +      return EFI_SUCCESS;
> >> +    }
> >> +  }
> >> +
> >> +  // No free slot found
> >> +  return EFI_OUT_OF_RESOURCES;
> >> +}
> >> +
> >> +/** Deregister the ACPI table Parser
> >> +
> >> +  This function deregisters the ACPI table parser.
> >> +
> >> +  @param [in] Signature   The ACPI table signature.
> >> +
> >> +  @retval EFI_SUCCESS           The parser was deregistered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid.
> >> +  @retval EFI_NOT_FOUND         A registered parser was not found.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +DeregisterParser (
> >> +  IN  UINT32                  Signature
> >> +  )
> >> +{
> >> +  UINT32 index;
> >> +
> >> +  if (Signature == ACPI_PARSER_SIGNATURE_NULL) {
> >> +    return EFI_INVALID_PARAMETER;
> >> +  }
> >> +
> >> +  for (index = 0;
> >> +       index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));
> >> +       index++)
> >> +  {
> >> +    if (Signature == mTableParserList[index].Signature) {
> >> +      mTableParserList[index].Signature =
> ACPI_PARSER_SIGNATURE_NULL;
> >> +      mTableParserList[index].Parser = NULL;
> >> +      return EFI_SUCCESS;
> >> +    }
> >> +  }
> >> +
> >> +  // No matching registered parser found.
> >> +  return EFI_NOT_FOUND;
> >> +}
> >> +
> >> +/** Get the ACPI table Parser
> >> +
> >> +  This function returns the ACPI table parser proc from the list of
> >> +  registered parsers.
> >> +
> >> +  @param [in]  Signature   The ACPI table signature.
> >> +  @param [out] ParserProc  Pointer to a ACPI table parser proc.
> >> +
> >> +  @retval EFI_SUCCESS           The parser was returned successfully.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid.
> >> +  @retval EFI_NOT_FOUND         A registered parser was not found.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +GetParser (
> >> +  IN  UINT32                   Signature,
> >> +  OUT PARSE_ACPI_TABLE_PROC *  ParserProc
> >> +  )
> >> +{
> >> +  UINT32 index;
> >> +
> >> +  if ((ParserProc == NULL) || (Signature ==
> ACPI_PARSER_SIGNATURE_NULL)) {
> >> +    return EFI_INVALID_PARAMETER;
> >> +  }
> >> +
> >> +  for (index = 0;
> >> +       index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));
> >> +       index++)
> >> +  {
> >> +    if (Signature == mTableParserList[index].Signature) {
> >> +      *ParserProc = mTableParserList[index].Parser;
> >> +      return EFI_SUCCESS;
> >> +    }
> >> +  }
> >> +
> >> +  // No matching registered parser found.
> >> +  return EFI_NOT_FOUND;
> >> +}
> >> +
> >> +/** This function processes the ACPI tables.
> >> +  This function calls ProcessTableReportOptions() to list the ACPI
> >> +  tables, perform binary dump of the tables and determine if the
> >> +  ACPI fields should be traced.
> >> +
> >> +  This function also invokes the parser for the ACPI tables.
> >> +
> >> +  This function also performs a RAW dump of the ACPI table including
> >> +  the unknown/unparsed ACPI tables and validates the checksum.
> >> +
> >> +  @param [in] Ptr                Pointer to the start of the ACPI
> >> +                                 table data buffer.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ProcessAcpiTable (
> >> +  IN UINT8* Ptr
> >> +  )
> >> +{
> >> +  EFI_STATUS    Status;
> >> +  BOOLEAN       Trace;
> >> +  CONST UINT32* AcpiTableSignature;
> >> +  CONST UINT32* AcpiTableLength;
> >> +  CONST UINT8*  AcpiTableRevision;
> >> +  PARSE_ACPI_TABLE_PROC ParserProc;
> >> +
> >> +  ParseAcpiHeader (
> >> +    Ptr,
> >> +    &AcpiTableSignature,
> >> +    &AcpiTableLength,
> >> +    &AcpiTableRevision
> >> +    );
> >> +
> >> +  Trace = ProcessTableReportOptions (
> >> +            *AcpiTableSignature,
> >> +            Ptr,
> >> +            *AcpiTableLength
> >> +            );
> >> +
> >> +  if (Trace) {
> >> +    DumpRaw (Ptr, *AcpiTableLength);
> >> +    VerifyChecksum (TRUE, Ptr, *AcpiTableLength);
> >> +  }
> >> +
> >> +  Status = GetParser (*AcpiTableSignature, &ParserProc);
> >> +  if (EFI_ERROR (Status)) {
> >> +    // No registered parser found, do default handling.
> >> +    if (Trace) {
> >> +      DumpAcpiHeader (Ptr);
> >> +    }
> >> +    return;
> >> +  }
> >> +
> >> +  ParserProc (
> >> +    Trace,
> >> +    Ptr,
> >> +    *AcpiTableLength,
> >> +    *AcpiTableRevision
> >> +    );
> >> +}
> >> diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..586e05abb716b36d34a9c
> 4e51568dc63fecb1085
> >> --- /dev/null
> >> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.c
> >> @@ -0,0 +1,601 @@
> >> +/**
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#include <Library/PrintLib.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/ShellLib.h>
> >> +#include <Library/UefiBootServicesTableLib.h>
> >> +#include <Library/BaseMemoryLib.h>
> >> +#include <Library/DebugLib.h>
> >> +#include <Library/MemoryAllocationLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +#include "AcpiView.h"
> >> +#include "UefiShellAcpiViewCommandLib.h"
> >> +
> >> +EFI_HII_HANDLE gShellAcpiViewHiiHandle = NULL;
> >> +
> >> +// Report variables
> >> +STATIC UINT32             mSelectedAcpiTable;
> >> +STATIC CONST CHAR16*      mSelectedAcpiTableName;
> >> +STATIC BOOLEAN            mSelectedAcpiTableFound;
> >> +STATIC EREPORT_OPTION     mReportType;
> >> +STATIC UINT32             mTableCount;
> >> +STATIC UINT32             mBinTableCount;
> >> +STATIC BOOLEAN            mVerbose;
> >> +STATIC BOOLEAN            mConsistencyCheck;
> >> +STATIC BOOLEAN            mColourHighlighting;
> >> +
> >> +/** An array of acpiview command line parameters.
> >> +*/
> >> +STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
> >> +  {L"/?", TypeFlag},
> >> +  {L"-c", TypeFlag},
> >> +  {L"-d", TypeFlag},
> >> +  {L"-h", TypeValue},
> >> +  {L"-l", TypeFlag},
> >> +  {L"-s", TypeValue},
> >> +  {L"-v", TypeFlag},
> >> +  {NULL, TypeMax}
> >> +};
> >> +
> >> +/** This function returns the colour highlighting status.
> >> +
> >> +  @retval TRUE if colour highlighting is enabled.
> >> +*/
> >> +BOOLEAN
> >> +GetColourHighlighting (
> >> +  VOID
> >> +  )
> >> +{
> >> +  return mColourHighlighting;
> >> +}
> >> +
> >> +/** This function sets the colour highlighting status.
> >> +
> >> +*/
> >> +VOID
> >> +SetColourHighlighting (
> >> +  BOOLEAN Highlight
> >> +  )
> >> +{
> >> +  mColourHighlighting = Highlight;
> >> +}
> >> +
> >> +/** This function returns the report options.
> >> +
> >> +  @retval Returns the report option.
> >> +*/
> >> +STATIC
> >> +EREPORT_OPTION
> >> +GetReportOption (
> >> +  VOID
> >> +  )
> >> +{
> >> +  return mReportType;
> >> +}
> >> +
> >> +/** This function returns the selected ACPI table.
> >> +
> >> +  @retval Returns signature of the selected ACPI table.
> >> +*/
> >> +STATIC
> >> +UINT32
> >> +GetSelectedAcpiTable (
> >> +  VOID
> >> +  )
> >> +{
> >> +  return mSelectedAcpiTable;
> >> +}
> >> +
> >> +/** This function dumps the ACPI table to a file.
> >> +  @param [in] Ptr       Pointer to the ACPI table data.
> >> +  @param [in] Length    The length of the ACPI table.
> >> +
> >> +  @retval TRUE          Success.
> >> +  @retval FALSE         Failure.
> >> +*/
> >> +STATIC
> >> +BOOLEAN
> >> +DumpAcpiTableToFile (
> >> +  IN CONST UINT8*  Ptr,
> >> +  IN CONST UINTN   Length
> >> +  )
> >> +{
> >> +  EFI_STATUS         Status;
> >> +  CHAR16             FileNameBuffer[MAX_FILE_NAME_LEN];
> >> +  SHELL_FILE_HANDLE  DumpFileHandle = NULL;
> >> +  UINTN              TransferBytes = Length;
> >> +
> >> +  UnicodeSPrint (
> >> +    FileNameBuffer,
> >> +    sizeof (FileNameBuffer),
> >> +    L".\\%s%04d.bin",
> >> +    mSelectedAcpiTableName,
> >> +    mBinTableCount++
> >> +    );
> >> +
> >> +  Status = ShellOpenFileByName (
> >> +             FileNameBuffer,
> >> +             &DumpFileHandle,
> >> +             EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE |
> EFI_FILE_MODE_CREATE,
> >> +             0
> >> +             );
> >> +  if (EFI_ERROR (Status)) {
> >> +    ShellPrintHiiEx (
> >> +      -1,
> >> +      -1,
> >> +      NULL,
> >> +      STRING_TOKEN (STR_GEN_READONLY_MEDIA),
> >> +      gShellAcpiViewHiiHandle,
> >> +      L"acpiview"
> >> +      );
> >> +    return FALSE;
> >> +  }
> >> +
> >> +  Print (L"Dumping ACPI table to : %s ... ", FileNameBuffer);
> >> +
> >> +  Status = ShellWriteFile (
> >> +             DumpFileHandle,
> >> +             &TransferBytes,
> >> +             (VOID*)Ptr
> >> +             );
> >> +  if (EFI_ERROR (Status)) {
> >> +    Print (L"ERROR: Failed to dump table to binary file.\n");
> >> +    TransferBytes = 0;
> >> +  } else {
> >> +    Print (L"DONE.\n");
> >> +  }
> >> +
> >> +  ShellCloseFile (&DumpFileHandle);
> >> +  return (Length == TransferBytes);
> >> +}
> >> +
> >> +/** This function processes the table reporting options for the ACPI table.
> >> +
> >> +  @param [in] Signature The ACPI table Signature.
> >> +  @param [in] TablePtr  Pointer to the ACPI table data.
> >> +  @param [in] Length    The length fo the ACPI table.
> >> +
> >> +  @retval Returns TRUE if the ACPI table should be traced.
> >> +*/
> >> +BOOLEAN
> >> +ProcessTableReportOptions (
> >> +  IN CONST UINT32  Signature,
> >> +  IN CONST UINT8*  TablePtr,
> >> +  IN CONST UINT32  Length
> >> +  )
> >> +{
> >> +  UINTN   OriginalAttribute;
> >> +  UINT8*  SignaturePtr = (UINT8*)(UINTN)&Signature;
> >> +  BOOLEAN Log = FALSE;
> >> +  BOOLEAN HighLight = GetColourHighlighting ();
> >> +  switch (GetReportOption ()) {
> >> +    case EREPORT_ALL:
> >> +      Log = TRUE;
> >> +      break;
> >> +    case EREPORT_SELECTED:
> >> +      if (Signature == GetSelectedAcpiTable ()) {
> >> +        Log = TRUE;
> >> +        mSelectedAcpiTableFound = TRUE;
> >> +      }
> >> +      break;
> >> +    case EREPORT_TABLE_LIST:
> >> +      if (mTableCount == 0) {
> >> +        if (HighLight) {
> >> +          OriginalAttribute = gST->ConOut->Mode->Attribute;
> >> +          gST->ConOut->SetAttribute (
> >> +                         gST->ConOut,
> >> +                         EFI_TEXT_ATTR(EFI_CYAN,
> >> +                           ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))
> >> +                         );
> >> +        }
> >> +        Print (L"\nInstalled Table(s):\n");
> >> +        if (HighLight) {
> >> +          gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);
> >> +        }
> >> +      }
> >> +      Print (
> >> +        L"\t%4d. %c%c%c%c\n",
> >> +        ++mTableCount,
> >> +        SignaturePtr[0],
> >> +        SignaturePtr[1],
> >> +        SignaturePtr[2],
> >> +        SignaturePtr[3]
> >> +        );
> >> +      break;
> >> +    case EREPORT_DUMP_BIN_FILE:
> >> +      if (Signature == GetSelectedAcpiTable ()) {
> >> +        mSelectedAcpiTableFound = TRUE;
> >> +        DumpAcpiTableToFile (TablePtr, Length);
> >> +      }
> >> +      break;
> >> +    case EREPORT_MAX:
> >> +      // We should never be here.
> >> +      // This case is only present to prevent compiler warning.
> >> +      break;
> >> +  } // switch
> >> +
> >> +  if (Log) {
> >> +    if (HighLight) {
> >> +      OriginalAttribute = gST->ConOut->Mode->Attribute;
> >> +      gST->ConOut->SetAttribute (
> >> +                     gST->ConOut,
> >> +                     EFI_TEXT_ATTR(EFI_LIGHTBLUE,
> >> +                       ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4))
> >> +                     );
> >> +    }
> >> +    Print (
> >> +      L"\n\n --------------- %c%c%c%c Table --------------- \n\n",
> >> +      SignaturePtr[0],
> >> +      SignaturePtr[1],
> >> +      SignaturePtr[2],
> >> +      SignaturePtr[3]
> >> +      );
> >> +    if (HighLight) {
> >> +      gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);
> >> +    }
> >> +  }
> >> +
> >> +  return Log;
> >> +}
> >> +
> >> +/** This function converts a string to ACPI table signature.
> >> +
> >> +  @param [in] Str   Pointer to the string to be converted to the
> >> +                    ACPI table signature.
> >> +
> >> +  @retval The ACPI table signature.
> >> +*/
> >> +STATIC
> >> +UINT32
> >> +ConvertStrToAcpiSignature (
> >> +  IN  CONST CHAR16* Str
> >> +  )
> >> +{
> >> +  UINT8 Index = 0;
> >> +  CHAR8 Ptr[4];
> >> +
> >> +  // Convert to Upper case and convert to ASCII
> >> +  while ((Index < 4) && (Str[Index] != 0)) {
> >> +    if (Str[Index] >= L'a' && Str[Index] <= L'z') {
> >> +      Ptr[Index] = (CHAR8)(Str[Index] - (L'a' - L'A'));
> >> +    } else {
> >> +      Ptr[Index] = (CHAR8)Str[Index];
> >> +    }
> >> +    Index++;
> >>
> >> +  }
> >> +  return *(UINT32*)Ptr;
> >> +}
> >> +
> >> +/** This function iterates the configuration table entries in the
> >> +    system table, retrieves the RSDP pointer and starts parsing
> >> +    the ACPI tables.
> >> +
> >> +  @param [in] SystemTable Pointer to the EFI system table.
> >> +
> >> +  @retval Returns EFI_NOT_FOUND   if the RSDP pointer is not found.
> >> +          Returns EFI_UNSUPPORTED if the RSDP version is less than 2.
> >> +          Returns EFI_SUCCESS     if successful.
> >> +*/
> >> +STATIC
> >> +EFI_STATUS
> >> +EFIAPI
> >> +AcpiView (
> >> +  IN EFI_SYSTEM_TABLE* SystemTable
> >> +  )
> >> +{
> >> +  EFI_STATUS               Status;
> >> +  UINTN                    Index;
> >> +  EFI_CONFIGURATION_TABLE* EfiConfigurationTable;
> >> +  BOOLEAN                  FoundAcpiTable;
> >> +  UINTN                    OriginalAttribute;
> >> +  UINTN                    PrintAttribute;
> >> +  EREPORT_OPTION           ReportOption;
> >> +  UINT8*                   RsdpPtr;
> >> +  UINT32                   RsdpLength;
> >> +  UINT8                    RsdpRevision;
> >> +  PARSE_ACPI_TABLE_PROC    RsdpParserProc;
> >> +  BOOLEAN                  Trace;
> >> +
> >> +  // Search the table for an entry that matches the ACPI Table Guid
> >> +  FoundAcpiTable = FALSE;
> >> +  for (Index = 0; Index < SystemTable->NumberOfTableEntries; Index++) {
> >> +    if (CompareGuid (&gEfiAcpiTableGuid,
> >> +          &(SystemTable->ConfigurationTable[Index].VendorGuid))) {
> >> +      EfiConfigurationTable = &SystemTable->ConfigurationTable[Index];
> >> +      FoundAcpiTable = TRUE;
> >> +      break;
> >> +    }
> >> +  }
> >> +
> >> +  if (FoundAcpiTable) {
> >> +    RsdpPtr = (UINT8*)EfiConfigurationTable->VendorTable;
> >> +
> >> +    // The RSDP revision is 1 byte starting at offset 15
> >> +    RsdpRevision = *(RsdpPtr + RSDP_REVISION_OFFSET);
> >> +
> >> +    if (RsdpRevision < 2) {
> >> +      Print (
> >> +        L"ERROR: RSDP version less than 2 is not supported.\n"
> >> +        );
> >> +      return EFI_UNSUPPORTED;
> >> +    }
> >> +
> >> +    // The RSDP length is 4 bytes starting at offset 20
> >> +    RsdpLength = *(UINT32*)(RsdpPtr + RSDP_LENGTH_OFFSET);
> >> +
> >> +    Trace = ProcessTableReportOptions (RSDP_TABLE_INFO, RsdpPtr,
> RsdpLength);
> >> +
> >> +    Status = GetParser (RSDP_TABLE_INFO, &RsdpParserProc);
> >> +    if (EFI_ERROR (Status)) {
> >> +      Print (
> >> +        L"ERROR: No registered parser found for RSDP.\n"
> >> +        );
> >> +      return Status;
> >> +    }
> >> +
> >> +    RsdpParserProc (
> >> +      Trace,
> >> +      RsdpPtr,
> >> +      RsdpLength,
> >> +      RsdpRevision
> >> +      );
> >> +
> >> +  } else {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"ERROR: Failed to find ACPI Table Guid in System Configuration
> Table.\n"
> >> +      );
> >> +    return EFI_NOT_FOUND;
> >> +  }
> >> +
> >> +  ReportOption = GetReportOption ();
> >> +  if (EREPORT_TABLE_LIST != ReportOption) {
> >> +    if (((EREPORT_SELECTED == ReportOption)  ||
> >> +         (EREPORT_DUMP_BIN_FILE == ReportOption)) &&
> >> +        (!mSelectedAcpiTableFound)) {
> >> +      Print (L"\nRequested ACPI Table not found.\n");
> >> +    } else if (EREPORT_DUMP_BIN_FILE != ReportOption) {
> >> +      OriginalAttribute = gST->ConOut->Mode->Attribute;
> >> +
> >> +      Print (L"\nTable Statistics:\n");
> >> +
> >> +      if (GetColourHighlighting ()) {
> >> +        PrintAttribute = (GetErrorCount () > 0) ?
> >> +                            EFI_TEXT_ATTR (
> >> +                              EFI_RED,
> >> +
> ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)
> >> +                              ) :
> >> +                            OriginalAttribute;
> >> +        gST->ConOut->SetAttribute (gST->ConOut, PrintAttribute);
> >> +      }
> >> +      Print (L"\t%d Error(s)\n", GetErrorCount ());
> >> +
> >> +      if (GetColourHighlighting ()) {
> >> +        PrintAttribute = (GetWarningCount () > 0) ?
> >> +                            EFI_TEXT_ATTR (
> >> +                              EFI_RED,
> >> +
> ((OriginalAttribute&(BIT4|BIT5|BIT6))>>4)
> >> +                              ) :
> >> +                            OriginalAttribute;
> >> +
> >> +        gST->ConOut->SetAttribute (gST->ConOut, PrintAttribute);
> >> +      }
> >> +      Print (L"\t%d Warning(s)\n", GetWarningCount ());
> >> +
> >> +      if (GetColourHighlighting ()) {
> >> +        gST->ConOut->SetAttribute (gST->ConOut, OriginalAttribute);
> >> +      }
> >> +    }
> >> +  }
> >> +  return EFI_SUCCESS;
> >> +}
> >> +
> >> +/**
> >> +  Function for 'acpiview' command.
> >> +
> >> +  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
> >> +  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
> >> +*/
> >> +SHELL_STATUS
> >> +EFIAPI
> >> +ShellCommandRunAcpiView (
> >> +  IN EFI_HANDLE        ImageHandle,
> >> +  IN EFI_SYSTEM_TABLE* SystemTable
> >> +  )
> >> +{
> >> +  EFI_STATUS         Status;
> >> +  SHELL_STATUS       ShellStatus = SHELL_SUCCESS;
> >> +  LIST_ENTRY*        Package = NULL;
> >> +  CHAR16*            ProblemParam;
> >> +  CONST CHAR16*      Temp;
> >> +  CHAR8              ColourOption[8];
> >> +  SHELL_FILE_HANDLE  TmpDumpFileHandle = NULL;
> >> +
> >> +  // Set Defaults
> >> +  mReportType = EREPORT_ALL;
> >> +  mTableCount = 0;
> >> +  mBinTableCount = 0;
> >> +  mSelectedAcpiTable = 0;
> >> +  mSelectedAcpiTableName = NULL;
> >> +  mSelectedAcpiTableFound = FALSE;
> >> +  mVerbose = TRUE;
> >> +  mConsistencyCheck = TRUE;
> >> +
> >> +  // Reset The error/warning counters
> >> +  ResetErrorCount ();
> >> +  ResetWarningCount ();
> >> +
> >> +  Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam,
> TRUE);
> >> +  if (EFI_ERROR (Status)) {
> >> +    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
> >> +      ShellPrintHiiEx (
> >> +        -1,
> >> +        -1,
> >> +        NULL,
> >> +        STRING_TOKEN (STR_GEN_PROBLEM),
> >> +        gShellAcpiViewHiiHandle,
> >> +        L"acpiview",
> >> +        ProblemParam
> >> +        );
> >> +      FreePool (ProblemParam);
> >> +    } else {
> >> +      Print (L"acpiview: Error processing input parameter(s)\n");
> >> +    }
> >> +    ShellStatus = SHELL_INVALID_PARAMETER;
> >> +  } else {
> >> +    if (ShellCommandLineGetCount (Package) > 1) {
> >> +      ShellPrintHiiEx (
> >> +        -1,
> >> +        -1,
> >> +        NULL,
> >> +        STRING_TOKEN (STR_GEN_TOO_MANY),
> >> +        gShellAcpiViewHiiHandle,
> >> +        L"acpiview"
> >> +        );
> >> +      ShellStatus = SHELL_INVALID_PARAMETER;
> >> +    } else if (ShellCommandLineGetFlag (Package, L"-?")) {
> >> +      ShellPrintHiiEx (
> >> +        -1,
> >> +        -1,
> >> +        NULL,
> >> +        STRING_TOKEN (STR_GET_HELP_ACPIVIEW),
> >> +        gShellAcpiViewHiiHandle,
> >> +        L"acpiview"
> >> +        );
> >> +    } else if (ShellCommandLineGetFlag (Package, L"-s") &&
> >> +               ShellCommandLineGetValue (Package, L"-s") == NULL) {
> >> +      ShellPrintHiiEx (
> >> +        -1,
> >> +        -1,
> >> +        NULL,
> >> +        STRING_TOKEN (STR_GEN_NO_VALUE),
> >> +        gShellAcpiViewHiiHandle,
> >> +        L"acpiview",
> >> +        L"-s"
> >> +        );
> >> +      ShellStatus = SHELL_INVALID_PARAMETER;
> >> +    } else if ((ShellCommandLineGetFlag (Package, L"-s") &&
> >> +                ShellCommandLineGetFlag (Package, L"-l"))) {
> >> +      ShellPrintHiiEx (
> >> +        -1,
> >> +        -1,
> >> +        NULL,
> >> +        STRING_TOKEN (STR_GEN_TOO_MANY),
> >> +        gShellAcpiViewHiiHandle,
> >> +        L"acpiview"
> >> +        );
> >> +      ShellStatus = SHELL_INVALID_PARAMETER;
> >> +    } else if (ShellCommandLineGetFlag (Package, L"-h") &&
> >> +               ShellCommandLineGetValue (Package, L"-h") == NULL) {
> >> +        ShellPrintHiiEx (
> >> +          -1,
> >> +          -1,
> >> +          NULL,
> >> +          STRING_TOKEN (STR_GEN_NO_VALUE),
> >> +          gShellAcpiViewHiiHandle,
> >> +          L"acpiview",
> >> +          L"-h"
> >> +          );
> >> +        ShellStatus = SHELL_INVALID_PARAMETER;
> >> +    } else if (ShellCommandLineGetFlag (Package, L"-d") &&
> >> +               !ShellCommandLineGetFlag (Package, L"-s")) {
> >> +        ShellPrintHiiEx (
> >> +          -1,
> >> +          -1,
> >> +          NULL,
> >> +          STRING_TOKEN (STR_GEN_MISSING_OPTION),
> >> +          gShellAcpiViewHiiHandle,
> >> +          L"acpiview",
> >> +          L"-s",
> >> +          L"-d"
> >> +          );
> >> +        ShellStatus = SHELL_INVALID_PARAMETER;
> >> +    } else {
> >> +      // Check if the colour option is set
> >> +      Temp = ShellCommandLineGetValue (Package, L"-h");
> >> +      if (Temp != NULL) {
> >> +        UnicodeStrToAsciiStrS (Temp, ColourOption, sizeof
> (ColourOption));
> >> +        if ((AsciiStriCmp (ColourOption, "ON") == 0) ||
> >> +            (AsciiStriCmp (ColourOption, "TRUE") == 0)) {
> >> +          SetColourHighlighting (TRUE);
> >> +        } else if ((AsciiStriCmp (ColourOption, "OFF") == 0) ||
> >> +                   (AsciiStriCmp (ColourOption, "FALSE") == 0)) {
> >> +          SetColourHighlighting (FALSE);
> >> +        }
> >> +      }
> >> +
> >> +      if (ShellCommandLineGetFlag (Package, L"-l")) {
> >> +        mReportType = EREPORT_TABLE_LIST;
> >> +      } else {
> >> +        mSelectedAcpiTableName = ShellCommandLineGetValue (Package,
> L"-s");
> >> +        if (mSelectedAcpiTableName != NULL) {
> >> +          mSelectedAcpiTable = (UINT32)ConvertStrToAcpiSignature (
> >> +                                         mSelectedAcpiTableName
> >> +                                         );
> >> +          mReportType = EREPORT_SELECTED;
> >> +
> >> +          if (ShellCommandLineGetFlag (Package, L"-d"))  {
> >> +            // Create a temporary file to check if the media is writable.
> >> +            CHAR16 FileNameBuffer[MAX_FILE_NAME_LEN];
> >> +            mReportType = EREPORT_DUMP_BIN_FILE;
> >> +
> >> +            UnicodeSPrint (
> >> +              FileNameBuffer,
> >> +              sizeof (FileNameBuffer),
> >> +              L".\\%s%04d.tmp",
> >> +              mSelectedAcpiTableName,
> >> +              mBinTableCount
> >> +              );
> >> +
> >> +            Status = ShellOpenFileByName (
> >> +                       FileNameBuffer,
> >> +                       &TmpDumpFileHandle,
> >> +                       EFI_FILE_MODE_READ |
> EFI_FILE_MODE_WRITE |
> >> +                       EFI_FILE_MODE_CREATE,
> >> +                       0
> >> +                       );
> >> +
> >> +            if (EFI_ERROR (Status)) {
> >> +              ShellStatus = SHELL_INVALID_PARAMETER;
> >> +              TmpDumpFileHandle = NULL;
> >> +              ShellPrintHiiEx (
> >> +                -1,
> >> +                -1,
> >> +                NULL,
> >> +                STRING_TOKEN (STR_GEN_READONLY_MEDIA),
> >> +                gShellAcpiViewHiiHandle,
> >> +                L"acpiview"
> >> +                );
> >> +              goto Done;
> >> +            }
> >> +            // Delete Temporary file.
> >> +            ShellDeleteFile (&TmpDumpFileHandle);
> >> +          } // -d
> >> +        } // -s
> >> +      }
> >> +
> >> +      // Parse ACPI Table information
> >> +      Status = AcpiView (SystemTable);
> >> +      if (EFI_ERROR (Status)) {
> >> +        ShellStatus = SHELL_NOT_FOUND;
> >> +      }
> >> +    }
> >> +  }
> >> +
> >> +Done:
> >> +  if (Package != NULL) {
> >> +    ShellCommandLineFreeVarList (Package);
> >> +  }
> >> +  return ShellStatus;
> >> +}
> >> diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.h
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.h
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..03561ea81686821e37c05
> d90f053731fde63fbb5
> >> --- /dev/null
> >> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiView.h
> >> @@ -0,0 +1,103 @@
> >> +/**
> >> +  Header file for AcpiView
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#ifndef ACPIVIEW_H_
> >> +#define ACPIVIEW_H_
> >> +
> >> +/** A macro to define the max file name length
> >> +*/
> >> +#define MAX_FILE_NAME_LEN    128
> >> +
> >> +/** Offset to the RSDP revision from the start of the RSDP
> >> +*/
> >> +#define RSDP_REVISION_OFFSET 15
> >> +
> >> +/** Offset to the RSDP length from the start of the RSDP
> >> +*/
> >> +#define RSDP_LENGTH_OFFSET   20
> >> +
> >> +/** The EREPORT_OPTION enum describes ACPI table Reporting options.
> >> +*/
> >> +typedef enum ReportOption {
> >> +  EREPORT_ALL,            ///< Report All tables.
> >> +  EREPORT_SELECTED,       ///< Report Selected table.
> >> +  EREPORT_TABLE_LIST,     ///< Report List of tables.
> >> +  EREPORT_DUMP_BIN_FILE,  ///< Dump selected table to a file.
> >> +  EREPORT_MAX
> >> +} EREPORT_OPTION;
> >> +
> >> +/** This function resets the ACPI table error counter to Zero.
> >> +*/
> >> +VOID
> >> +ResetErrorCount (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function returns the ACPI table error count.
> >> +
> >> +  @retval Returns the count of errors detected in the ACPI tables.
> >> +*/
> >> +UINT32
> >> +GetErrorCount (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function resets the ACPI table warning counter to Zero.
> >> +*/
> >> +VOID
> >> +ResetWarningCount (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function returns the ACPI table warning count.
> >> +
> >> +  @retval Returns the count of warning detected in the ACPI tables.
> >> +*/
> >> +UINT32
> >> +GetWarningCount (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function returns the colour highlighting status.
> >> +
> >> +  @retval TRUE if colour highlighting is enabled.
> >> +*/
> >> +BOOLEAN
> >> +GetColourHighlighting (
> >> +  VOID
> >> +  );
> >> +
> >> +/** This function sets the colour highlighting status.
> >> +
> >> +*/
> >> +VOID
> >> +SetColourHighlighting (
> >> +  BOOLEAN Highlight
> >> +  );
> >> +
> >> +/** This function processes the table reporting options for the ACPI table.
> >> +
> >> +  @param [in] Signature The ACPI table Signature.
> >> +  @param [in] TablePtr  Pointer to the ACPI table data.
> >> +  @param [in] Length    The length fo the ACPI table.
> >> +
> >> +  @retval Returns TRUE if the ACPI table should be traced.
> >> +*/
> >> +BOOLEAN
> >> +ProcessTableReportOptions (
> >> +  IN CONST UINT32  Signature,
> >> +  IN CONST UINT8*  TablePtr,
> >> +  IN CONST UINT32  Length
> >> +  );
> >> +
> >> +#endif // ACPIVIEW_H_
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..c66e820ba788a0fb78106
> 1dbad1f57f90acef78c
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParser.c
> >> @@ -0,0 +1,117 @@
> >> +/**
> >> +  BGRT table parser
> >> +
> >> +  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI BDRT Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER BgrtParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"Version", 2, 36, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Status", 1, 38, L"0x%x", NULL,  NULL, NULL, NULL},
> >> +  {L"Image Type", 1, 39, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Image Address", 8, 40, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Image Offset X", 4, 48, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Image Offset Y", 4, 52, L"%d", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function parses the ACPI BGRT table.
> >> +  When trace is enabled this function parses the BGRT table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function also parses the ACPI header for the DSDT table and
> >> +  invokes the parser for the ACPI DSDT table.
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiBgrt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  ParseAcpi (
> >> +    Trace,
> >> +    0,
> >> +    "BGRT",
> >> +    Ptr,
> >> +    AcpiTableLength,
> >> +    PARSER_PARAMS (BgrtParser)
> >> +    );
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +BgrtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_BOOT_GRAPHICS_RESOURCE_TABLE_SIGNATURE,
> >> +           ParseAcpiBgrt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +BgrtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_BOOT_GRAPHICS_RESOURCE_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..0a4d40f00da1a20e48c84
> e4a3d25dd7a4db74761
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = BgrtParserLib
> >> +  FILE_GUID      = C4CCD9B6-F62F-4B06-A25D-F815507B49E0
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = BgrtParserLibConstructor
> >> +  DESTRUCTOR     = BgrtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  BgrtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2Parser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2Parser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..94de9a365cc1f961d351ef
> 22917d3009a3e9dc53
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2Parser.c
> >> @@ -0,0 +1,287 @@
> >> +/**
> >> +  DBG2 table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - Microsoft Debug Port Table 2 (DBG2) Specification - December 10,
> 2015.
> >> +**/
> >> +
> >> +#include <IndustryStandard/DebugPort2Table.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables pointing to the table fields
> >> +STATIC CONST UINT32* OffsetDbgDeviceInfo;
> >> +STATIC CONST UINT32* NumberDbgDeviceInfo;
> >> +STATIC CONST UINT16* DbgDevInfoLen;
> >> +STATIC CONST UINT8*  GasCount;
> >> +STATIC CONST UINT16* NameSpaceStringLength;
> >> +STATIC CONST UINT16* NameSpaceStringOffset;
> >> +STATIC CONST UINT16* OEMDataLength;
> >> +STATIC CONST UINT16* OEMDataOffset;
> >> +STATIC CONST UINT16* BaseAddrRegOffset;
> >> +STATIC CONST UINT16* AddrSizeOffset;
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** This function Validates the NameSpace string length.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateNameSpaceStrLen (
> >> +  IN  UINT8* Ptr,
> >> +  IN  VOID*  Context
> >> +  );
> >> +
> >> +/** This function parses the debug device information structure.
> >> +
> >> +  @param [in]  Ptr     Pointer to the start of the buffer.
> >> +  @param [out] Length  Pointer in which the length of the debug
> >> +                       device information is returned.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +DumpDbgDeviceInfo (
> >> +  IN  UINT8*  Ptr,
> >> +  OUT UINT32* Length
> >> +  );
> >> +
> >> +/// An ACPI_PARSER array describing the ACPI DBG2 table.
> >> +STATIC CONST ACPI_PARSER Dbg2Parser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"OffsetDbgDeviceInfo", 4, 36, L"0x%x", NULL,
> >> +   (VOID**)&OffsetDbgDeviceInfo, NULL, NULL},
> >> +  {L"NumberDbgDeviceInfo", 4, 40, L"%d", NULL,
> >> +   (VOID**)&NumberDbgDeviceInfo, NULL, NULL}
> >> +};
> >> +
> >> +/// An ACPI_PARSER array describing the debug device information.
> >> +STATIC CONST ACPI_PARSER DbgDevInfoParser[] = {
> >> +  {L"Revision", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 2, 1, L"%d", NULL, (VOID**)&DbgDevInfoLen, NULL, NULL},
> >> +
> >> +  {L"Generic Address Registers Count", 1, 3, L"0x%x", NULL,
> >> +   (VOID**)&GasCount, NULL, NULL},
> >> +  {L"NameSpace String Length", 2, 4, L"%d", NULL,
> >> +   (VOID**)&NameSpaceStringLength, ValidateNameSpaceStrLen, NULL},
> >> +  {L"NameSpace String Offset", 2, 6, L"0x%x", NULL,
> >> +   (VOID**)&NameSpaceStringOffset, NULL, NULL},
> >> +  {L"OEM Data Length", 2, 8, L"%d", NULL, (VOID**)&OEMDataLength,
> >> +   NULL, NULL},
> >> +  {L"OEM Data Offset", 2, 10, L"0x%x", NULL, (VOID**)&OEMDataOffset,
> >> +   NULL, NULL},
> >> +
> >> +  {L"Port Type", 2, 12, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Port SubType", 2, 14, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 16, L"%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Base Address Register Offset", 2, 18, L"0x%x", NULL,
> >> +   (VOID**)&BaseAddrRegOffset, NULL, NULL},
> >> +  {L"Address Size Offset", 2, 20, L"0x%x", NULL,
> >> +   (VOID**)&AddrSizeOffset, NULL, NULL}
> >> +};
> >> +
> >> +/** This function validates the NameSpace string length.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateNameSpaceStrLen (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +  UINT16 NameSpaceStrLen = *(UINT16*)Ptr;
> >> +  if (NameSpaceStrLen < 2) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: NamespaceString Length = %d. If no Namespace device
> exists,\n"
> >> +       "    then NamespaceString[] must contain a period '.'",
> >> +      NameSpaceStrLen
> >> +      );
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the debug device information structure.
> >> +
> >> +  @param [in]  Ptr     Pointer to the start of the buffer.
> >> +  @param [out] Ptr     Pointer in which the length of the debug
> >> +                       device information is returned.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +DumpDbgDeviceInfo (
> >> +  IN  UINT8*  Ptr,
> >> +  OUT UINT32* Length
> >> +  )
> >> +{
> >> +  UINT16  Index;
> >> +  UINT8*  DataPtr;
> >> +  UINT32* AddrSize;
> >> +
> >> +  // Parse the debug device info to get the Length
> >> +  ParseAcpi (
> >> +    FALSE,
> >> +    0,
> >> +    "Debug Device Info",
> >> +    Ptr,
> >> +    3,  // Length is 2 bytes starting at offset 1
> >> +    PARSER_PARAMS (DbgDevInfoParser)
> >> +    );
> >> +
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    2,
> >> +    "Debug Device Info",
> >> +    Ptr,
> >> +    *DbgDevInfoLen,
> >> +    PARSER_PARAMS (DbgDevInfoParser)
> >> +    );
> >> +
> >> +  // GAS and Address Size
> >> +  Index = 0;
> >> +  DataPtr = Ptr + (*BaseAddrRegOffset);
> >> +  AddrSize = (UINT32*)(Ptr + (*AddrSizeOffset));
> >> +  while (Index < (*GasCount)) {
> >> +    PrintFieldName (4, L"BaseAddressRegister");
> >> +    DumpGasStruct (DataPtr, 4);
> >> +    PrintFieldName (4, L"Address Size");
> >> +    Print (L"0x%x\n", AddrSize[Index]);
> >> +    DataPtr += GAS_LENGTH;
> >> +    Index++;
> >> +  }
> >> +
> >> +  // NameSpace String
> >> +  Index = 0;
> >> +  DataPtr = Ptr + (*NameSpaceStringOffset);
> >> +  PrintFieldName (4, L"NameSpace String");
> >> +  while (Index < (*NameSpaceStringLength)) {
> >> +    Print (L"%c", DataPtr[Index++]);
> >> +  }
> >> +  Print (L"\n");
> >> +
> >> +  // OEM Data
> >> +  Index = 0;
> >> +  DataPtr = Ptr + (*OEMDataOffset);
> >> +  PrintFieldName (4, L"OEM Data");
> >> +  while (Index < (*OEMDataLength)) {
> >> +    Print (L"%x ", DataPtr[Index++]);
> >> +    if ((Index & 7) == 0) {
> >> +      Print (L"\n%-*s   ", OUTPUT_FIELD_COLUMN_WIDTH, L"");
> >> +    }
> >> +  }
> >> +
> >> +  *Length = *DbgDevInfoLen;
> >> +}
> >> +
> >> +/** This function parses the ACPI DBG2 table.
> >> +  When trace is enabled this function parses the DBG2 table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiDbg2 (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT32 DbgDeviceInfoLength;
> >> +  UINT8* DevInfoPtr;
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             0,
> >> +             "DBG2",
> >> +             Ptr,
> >> +             AcpiTableLength,
> >> +             PARSER_PARAMS (Dbg2Parser)
> >> +             );
> >> +  DevInfoPtr = Ptr + Offset;
> >> +
> >> +  while (Offset < AcpiTableLength) {
> >> +    DumpDbgDeviceInfo (
> >> +      DevInfoPtr,
> >> +      &DbgDeviceInfoLength
> >> +      );
> >> +    Offset += DbgDeviceInfoLength;
> >> +    DevInfoPtr += DbgDeviceInfoLength;
> >> +  }
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +Dbg2ParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +           EFI_ACPI_6_2_DEBUG_PORT_2_TABLE_SIGNATURE,
> >> +           ParseAcpiDbg2
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +Dbg2ParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +           EFI_ACPI_6_2_DEBUG_PORT_2_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2ParserLi
> b.inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2ParserLi
> b.inf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..e73c0df92cff870c8134c0
> 148f88d24cdec6f0ba
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2ParserLi
> b.inf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = Dbg2ParserLib
> >> +  FILE_GUID      = FB1F11AA-F2F0-4D58-8D06-365DCB63A614
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = Dbg2ParserLibConstructor
> >> +  DESTRUCTOR     = Dbg2ParserLibDestructor
> >> +
> >> +[Sources]
> >> +  Dbg2Parser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..c76cc7e8777e75f3983ca3
> 10cb3c0d43fed03bf5
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParser.c
> >> @@ -0,0 +1,92 @@
> >> +/**
> >> +  DSDT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +/** This function parses the ACPI DSDT table.
> >> +  When trace is enabled this function parses the DSDT table and
> >> +  traces the ACPI table fields.
> >> +  For the DSDT table only the ACPI header fields are parsed and
> >> +  traced.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiDsdt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  DumpAcpiHeader (Ptr);
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +DsdtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiDsdt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +DsdtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_DIFFERENTIATED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..96bf238e1cb383c6233e7
> 28d297cd4292919eed3
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = DsdtParserLib
> >> +  FILE_GUID      = 3047842B-9FA6-4CA2-9513-D7FD6AD09574
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = DsdtParserLibConstructor
> >> +  DESTRUCTOR     = DsdtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  DsdtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..bc13af40bd7f9c6f550294
> 0252360d095dbd59d4
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParser.c
> >> @@ -0,0 +1,309 @@
> >> +/**
> >> +  FADT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC CONST UINT32* DsdtAddress;
> >> +STATIC CONST UINT64* X_DsdtAddress;
> >> +STATIC CONST UINT8*  FadtMinorRevision;
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** A macro defining the Hardware reduced ACPI flag
> >> +*/
> >> +#define HW_REDUCED_ACPI   BIT20
> >> +
> >> +// Forward declarations
> >> +CONST ACPI_DESCRIPTION_HEADER_INFO* CONST
> >> +EFIAPI
> >> +GetAcpiXsdtHeaderInfo (
> >> +  VOID
> >> +);
> >> +
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateFirmwareCtrl (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +);
> >> +
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateXFirmwareCtrl (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +);
> >> +
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateFlags (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +);
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI FADT Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER FadtParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"FIRMWARE_CTRL", 4, 36, L"0x%x", NULL, NULL, ValidateFirmwareCtrl,
> NULL},
> >> +  {L"DSDT", 4, 40, L"0x%x", NULL, (VOID**)&DsdtAddress, NULL, NULL},
> >> +  {L"Reserved", 1, 44, L"%x", NULL, NULL, NULL, NULL},
> >> +  {L"Preferred_PM_Profile", 1, 45, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"SCI_INT", 2, 46, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"SMI_CMD", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"ACPI_ENABLE", 1, 52, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"ACPI_DISABLE", 1, 53, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"S4BIOS_REQ", 1, 54, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PSTATE_CNT", 1, 55, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM1a_EVT_BLK", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM1b_EVT_BLK", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM1a_CNT_BLK", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM1b_CNT_BLK", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM2_CNT_BLK", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM_TMR_BLK", 4, 76, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"GPE0_BLK", 4, 80, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"GPE1_BLK", 4, 84, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM1_EVT_LEN", 1, 88, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM1_CNT_LEN", 1, 89, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM2_CNT_LEN", 1, 90, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PM_TMR_LEN", 1, 91, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"GPE0_BLK_LEN", 1, 92, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"GPE1_BLK_LEN", 1, 93, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"GPE1_BASE", 1, 94, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"CST_CNT", 1, 95, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"P_LVL2_LAT", 2, 96, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"P_LVL3_LAT", 2, 98, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"FLUSH_SIZE", 2, 100, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"FLUSH_STRIDE", 2, 102, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"DUTY_OFFSET", 1, 104, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"DUTY_WIDTH", 1, 105, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"DAY_ALRM", 1, 106, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"MON_ALRM", 1, 107, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"CENTURY", 1, 108, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"IAPC_BOOT_ARCH", 2, 109, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 1, 111, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 112, L"0x%x", NULL, NULL, ValidateFlags, NULL},
> >> +  {L"RESET_REG", 12, 116, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"RESET_VALUE", 1, 128, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"ARM_BOOT_ARCH", 2, 129, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"FADT Minor Version", 1, 131, L"0x%x", NULL,
> (VOID**)&FadtMinorRevision,
> >> +    NULL, NULL},
> >> +  {L"X_FIRMWARE_CTRL", 8, 132, L"0x%lx", NULL, NULL,
> >> +    ValidateXFirmwareCtrl, NULL},
> >> +  {L"X_DSDT", 8, 140, L"0x%lx", NULL, (VOID**)&X_DsdtAddress, NULL,
> NULL},
> >> +  {L"X_PM1a_EVT_BLK", 12, 148, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_PM1b_EVT_BLK", 12, 160, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_PM1a_CNT_BLK", 12, 172, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_PM1b_CNT_BLK", 12, 184, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_PM2_CNT_BLK", 12, 196, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_PM_TMR_BLK", 12, 208, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_GPE0_BLK", 12, 220, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"X_GPE1_BLK", 12, 232, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"SLEEP_CONTROL_REG", 12, 244, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"SLEEP_STATUS_REG", 12, 256, NULL, DumpGas, NULL, NULL, NULL},
> >> +  {L"Hypervisor VendorIdentity", 8, 268, L"%lx", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function validates the Firmware Control Field.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateFirmwareCtrl (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +)
> >> +{
> >> +#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  if (*(UINT32*)Ptr != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: Firmware Control must be zero for ARM platforms."
> >> +    );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** This function validates the X_Firmware Control Field.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateXFirmwareCtrl (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +)
> >> +{
> >> +#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  if (*(UINT64*)Ptr != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: X Firmware Control must be zero for ARM platforms."
> >> +    );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** This function validates the flags.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateFlags (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +)
> >> +{
> >> +#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  if (((*(UINT32*)Ptr) & HW_REDUCED_ACPI) == 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: HW_REDUCED_ACPI flag must be set for ARM
> platforms."
> >> +    );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** This function parses the ACPI FADT table.
> >> +  This function parses the FADT table and optionally traces the ACPI
> >> +  table fields.
> >> +
> >> +  This function also parses the ACPI header for the DSDT table and
> >> +  invokes the parser for the ACPI DSDT table.
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiFadt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT8*  DsdtPtr;
> >> +
> >> +  ParseAcpi (
> >> +    Trace,
> >> +    0,
> >> +    "FADT",
> >> +    Ptr,
> >> +    AcpiTableLength,
> >> +    PARSER_PARAMS (FadtParser)
> >> +    );
> >> +
> >> +  if (Trace) {
> >> +    Print (L"\nSummary:\n");
> >> +    PrintFieldName (2, L"FADT Version");
> >> +    Print (L"%d.%d\n",  *AcpiHdrInfo.Revision, *FadtMinorRevision);
> >> +
> >> +    if (*GetAcpiXsdtHeaderInfo ()->OemTableId !=
> *AcpiHdrInfo.OemTableId) {
> >> +      IncrementErrorCount ();
> >> +      Print (L"ERROR: OEM Table Id does not match with RSDT/XSDT.\n");
> >> +    }
> >> +  }
> >> +
> >> +  // If X_DSDT is not zero then use X_DSDT and ignore DSDT,
> >> +  // else use DSDT.
> >> +  if (*X_DsdtAddress != 0) {
> >> +    DsdtPtr = (UINT8*)(UINTN)(*X_DsdtAddress);
> >> +  } else if (*DsdtAddress != 0) {
> >> +    DsdtPtr = (UINT8*)(UINTN)(*DsdtAddress);
> >> +  } else {
> >> +    // Both DSDT and X_DSDT cannot be zero.
> >> +#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +    if (Trace) {
> >> +      // The DSDT Table is mandatory for ARM systems
> >> +      // as the CPU information MUST be presented in
> >> +      // the DSDT.
> >> +      IncrementErrorCount ();
> >> +      Print (L"ERROR: Both X_DSDT and DSDT are NULL.\n");
> >> +    }
> >> +#endif
> >> +    return;
> >> +  }
> >> +
> >> +  ProcessAcpiTable (DsdtPtr);
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +FadtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +           EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiFadt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +FadtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +           EFI_ACPI_6_2_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..428a1a026deec1b87ccb9
> 3dd77750078e2a8eefd
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = FadtParserLib
> >> +  FILE_GUID      = 1507EC8A-2BD4-460B-9830-D78D0BD7E0E6
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = FadtParserLibConstructor
> >> +  DESTRUCTOR     = FadtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  FadtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..784104a8a4e5c5ff0ba263
> 74a67377e77ddfe39b
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
> >> @@ -0,0 +1,338 @@
> >> +/**
> >> +  GTDT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +  **/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC CONST UINT32* GtdtPlatformTimerCount;
> >> +STATIC CONST UINT32* GtdtPlatformTimerOffset;
> >> +STATIC CONST UINT8*  PlatformTimerType;
> >> +STATIC CONST UINT16* PlatformTimerLength;
> >> +STATIC CONST UINT32* GtBlockTimerCount;
> >> +STATIC CONST UINT32* GtBlockTimerOffset;
> >> +STATIC CONST UINT16* GtBlockLength;
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** This function validates the GT Block timer count.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateGtBlockTimerCount (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI GTDT Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GtdtParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"CntControlBase Physical Address", 8, 36, L"0x%lx", NULL, NULL,
> >> +   NULL, NULL},
> >> +  {L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Secure EL1 timer GSIV", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Secure EL1 timer FLAGS", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Non-Secure EL1 timer GSIV", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Non-Secure EL1 timer FLAGS", 4, 60, L"0x%x", NULL, NULL, NULL,
> NULL},
> >> +
> >> +  {L"Virtual timer GSIV", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Virtual timer FLAGS", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Non-Secure EL2 timer GSIV", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Non-Secure EL2 timer FLAGS", 4, 76, L"0x%x", NULL, NULL, NULL,
> NULL},
> >> +
> >> +  {L"CntReadBase Physical address", 8, 80, L"0x%lx", NULL, NULL, NULL,
> NULL},
> >> +  {L"Platform Timer Count", 4, 88, L"%d", NULL,
> >> +   (VOID**)&GtdtPlatformTimerCount, NULL, NULL},
> >> +  {L"Platform Timer Offset", 4, 92, L"0x%x", NULL,
> >> +   (VOID**)&GtdtPlatformTimerOffset, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the Platform timer header.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GtPlatformTimerHeaderParser[] = {
> >> +  {L"Type", 1, 0, NULL, NULL, (VOID**)&PlatformTimerType, NULL, NULL},
> >> +  {L"Length", 2, 1, NULL, NULL, (VOID**)&PlatformTimerLength, NULL,
> NULL},
> >> +  {L"Reserved", 1, 3, NULL, NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the Platform GT Block.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GtBlockParser[] = {
> >> +  {L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 2, 1, L"%d", NULL, (VOID**)&GtBlockLength, NULL, NULL},
> >> +  {L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},
> >> +  {L"Physical address (CntCtlBase)", 8, 4, L"0x%lx", NULL, NULL, NULL,
> NULL},
> >> +  {L"Timer Count", 4, 12, L"%d", NULL, (VOID**)&GtBlockTimerCount,
> >> +   ValidateGtBlockTimerCount, NULL},
> >> +  {L"Timer Offset", 4, 16, L"%d", NULL, (VOID**)&GtBlockTimerOffset,
> NULL,
> >> +    NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the GT Block timer.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GtBlockTimerParser[] = {
> >> +  {L"Frame Number", 1, 0, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 3, 1, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},
> >> +  {L"Physical address (CntBaseX)", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Physical address (CntEL0BaseX)", 8, 12, L"0x%lx", NULL, NULL, NULL,
> >> +    NULL},
> >> +  {L"Physical Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Physical Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Virtual Timer GSIV", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Virtual Timer Flags", 4, 32, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Common Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the Platform Watchdog.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SBSAGenericWatchdogParser[] = {
> >> +  {L"Type", 1, 0, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 2, 1, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 1, 3, L"%x", NULL, NULL, NULL, NULL},
> >> +  {L"RefreshFrame Physical address", 8, 4, L"0x%lx", NULL, NULL, NULL,
> NULL},
> >> +  {L"ControlFrame Physical address", 8, 12, L"0x%lx", NULL, NULL, NULL,
> NULL},
> >> +  {L"Watchdog Timer GSIV", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Watchdog Timer Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function validates the GT Block timer count.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateGtBlockTimerCount (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +  UINT32 BlockTimerCount = *(UINT32*)Ptr;
> >> +  if (BlockTimerCount > 8) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: Timer Count = %d. Max Timer Count is 8.",
> >> +      BlockTimerCount
> >> +      );
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the Platform GT Block.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the GT Block data.
> >> +  @param [in] Length  Length of the GT Block structure.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpGTBlock (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length
> >> +  )
> >> +{
> >> +  UINT32 Index;
> >> +  UINT32 Offset;
> >> +  UINT16 GTBlockTimerLength;
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             2,
> >> +             "GT Block",
> >> +             Ptr,
> >> +             Length,
> >> +             PARSER_PARAMS (GtBlockParser)
> >> +             );
> >> +  GTBlockTimerLength = (*GtBlockLength - Offset) / (*GtBlockTimerCount);
> >> +  Length -= Offset;
> >> +
> >> +  if (*GtBlockTimerCount != 0) {
> >> +    Ptr += (*GtBlockTimerOffset);
> >> +    Index = 0;
> >> +    while ((Index < (*GtBlockTimerCount)) && (Length >=
> GTBlockTimerLength)) {
> >> +      Offset = ParseAcpi (
> >> +                 TRUE,
> >> +                 2,
> >> +                 "GT Block Timer",
> >> +                 Ptr,
> >> +                 GTBlockTimerLength,
> >> +                 PARSER_PARAMS (GtBlockTimerParser)
> >> +                 );
> >> +      // Increment by GT Block Timer structure size
> >> +      Ptr += Offset;
> >> +      Length -= Offset;
> >> +      Index++;
> >> +    }
> >> +
> >> +    if (Length != 0) {
> >> +      IncrementErrorCount ();
> >> +      Print (
> >> +        L"ERROR:GT Block Timer length mismatch. Unparsed %d bytes.\n",
> >> +        Length
> >> +        );
> >> +    }
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the Platform Watchdog timer.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the watchdog timer data.
> >> +  @param [in] Length  Length of the watchdog timer structure.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpWatchdogTimer (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length
> >> +  )
> >> +{
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    2,
> >> +    "SBSA Generic Watchdog",
> >> +    Ptr,
> >> +    Length,
> >> +    PARSER_PARAMS (SBSAGenericWatchdogParser)
> >> +    );
> >> +}
> >> +
> >> +/** This function parses the ACPI GTDT table.
> >> +  When trace is enabled this function parses the GTDT table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function also parses the following platform timer structures:
> >> +    - GT Block timer
> >> +    - Watchdog timer
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiGtdt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Index;
> >> +  UINT8* TimerPtr;
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    0,
> >> +    "GTDT",
> >> +    Ptr,
> >> +    AcpiTableLength,
> >> +    PARSER_PARAMS (GtdtParser)
> >> +    );
> >> +
> >> +  if (*GtdtPlatformTimerCount != 0) {
> >> +    TimerPtr = Ptr + (*GtdtPlatformTimerOffset);
> >> +    Index = 0;
> >> +    do {
> >> +      // Parse the Platform Timer Header
> >> +      ParseAcpi (
> >> +        FALSE,
> >> +        0,
> >> +        NULL,
> >> +        TimerPtr,
> >> +        4,  // GT Platform Timer structure header length.
> >> +        PARSER_PARAMS (GtPlatformTimerHeaderParser)
> >> +        );
> >> +      switch (*PlatformTimerType) {
> >> +        case EFI_ACPI_6_2_GTDT_GT_BLOCK:
> >> +          DumpGTBlock (TimerPtr, *PlatformTimerLength);
> >> +          break;
> >> +        case EFI_ACPI_6_2_GTDT_SBSA_GENERIC_WATCHDOG:
> >> +          DumpWatchdogTimer (TimerPtr, *PlatformTimerLength);
> >> +          break;
> >> +        default:
> >> +          IncrementErrorCount ();
> >> +          Print (
> >> +            L"ERROR: INVALID Platform Timer Type = %d\n",
> >> +            *PlatformTimerType
> >> +            );
> >> +          break;
> >> +      } // switch
> >> +      TimerPtr += (*PlatformTimerLength);
> >> +      Index++;
> >> +    } while (Index < *GtdtPlatformTimerCount);
> >> +  }
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +GtdtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiGtdt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +GtdtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..4b1e9d99f2353e7e696f6f
> 0fc716d42b24bfeb9e
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = GtdtParserLib
> >> +  FILE_GUID      = 4638A572-59C0-4AAF-B990-B95FA67D9656
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = GtdtParserLibConstructor
> >> +  DESTRUCTOR     = GtdtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  GtdtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..35b2571282c04257a010b
> f6c800acf7140d0283b
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParser.c
> >> @@ -0,0 +1,745 @@
> >> +/**
> >> +  IORT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - IO Remapping Table, Platform Design Document, Revision C, 15 May
> 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/IoRemappingTable.h>
> >> +#include <Library/PrintLib.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** The EIORT_NODE enum describes the IORT Node types.
> >> +*/
> >> +typedef enum IortNode {
> >> +  EIORT_NODE_ITS_GROUP,        ///< ITS Group node
> >> +  EIORT_NODE_NAMED_COMPONENT,  ///< Named Component node
> >> +  EIORT_NODE_ROOT_COMPLEX,     ///< Root Complex node
> >> +  EIORT_NODE_SMMUV1_V2,        ///< SMMU v1/v2 node
> >> +  EIORT_NODE_SMMUV3,           ///< SMMU v3 node
> >> +  EIORT_NODE_PMCG,             ///< PMC group node
> >> +  EIORT_NODE_MAX
> >> +} EIORT_NODE;
> >> +
> >> +// Local Variables
> >> +STATIC CONST UINT32* IortNodeCount;
> >> +STATIC CONST UINT32* IortNodeOffset;
> >> +
> >> +STATIC CONST UINT8* IortNodeType;
> >> +STATIC CONST UINT16* IortNodeLength;
> >> +STATIC CONST UINT32* IortIdMappingCount;
> >> +STATIC CONST UINT32* IortIdMappingOffset;
> >> +
> >> +STATIC CONST UINT32* InterruptContextCount;
> >> +STATIC CONST UINT32* InterruptContextOffset;
> >> +STATIC CONST UINT32* PmuInterruptCount;
> >> +STATIC CONST UINT32* PmuInterruptOffset;
> >> +
> >> +STATIC CONST UINT32* ItsCount;
> >> +
> >> +/** This function validates the ID Mapping array count for the ITS node.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateItsIdMappingCount (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** This function validates the ID Mapping array offset for the ITS node.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateItsIdArrayReference (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** Helper Macro for populating the IORT Node header in the ACPI_PARSER
> >> +    array.
> >> +
> >> +  @param [out] ValidateIdMappingCount    Optional pointer to a
> function for
> >> +                                         validating the ID Mapping
> count.
> >> +  @param [out] ValidateIdArrayReference  Optional pointer to a function
> for
> >> +                                         validating the ID Array
> reference.
> >> +*/
> >> +#define PARSE_IORT_NODE_HEADER(ValidateIdMappingCount,
> \
> >> +                               ValidateIdArrayReference)
> \
> >> +  { L"Type", 1, 0, L"%d", NULL, (VOID**)&IortNodeType, NULL, NULL },
> \
> >> +  { L"Length", 2, 1, L"%d", NULL, (VOID**)&IortNodeLength, NULL, NULL },
> \
> >> +  { L"Revision", 1, 3, L"%d", NULL, NULL, NULL, NULL },
> \
> >> +  { L"Reserved", 4, 4, L"0x%x", NULL, NULL, NULL, NULL },
> \
> >> +  { L"Number of ID mappings", 4, 8, L"%d", NULL,
> \
> >> +    (VOID**)&IortIdMappingCount, ValidateIdMappingCount, NULL },
> \
> >> +  { L"Reference to ID Array", 4, 12, L"0x%x", NULL,
> \
> >> +    (VOID**)&IortIdMappingOffset, ValidateIdArrayReference, NULL }
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI IORT Table
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"Number of IORT Nodes", 4, 36, L"%d", NULL,
> >> +   (VOID**)&IortNodeCount, NULL, NULL},
> >> +  {L"Offset to Array of IORT Nodes", 4, 40, L"0x%x", NULL,
> >> +   (VOID**)&IortNodeOffset, NULL, NULL},
> >> +  {L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT node header structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeHeaderParser[] = {
> >> +  PARSE_IORT_NODE_HEADER (NULL, NULL)
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT SMMUv1/2 node.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeSmmuV1V2Parser[] = {
> >> +  PARSE_IORT_NODE_HEADER (NULL, NULL),
> >> +  {L"Base Address", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Span", 8, 24, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Model", 4, 32, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reference to Global Interrupt Array", 4, 40, L"0x%x", NULL, NULL,
> NULL,
> >> +   NULL},
> >> +  {L"Number of context interrupts", 4, 44, L"%d", NULL,
> >> +   (VOID**)&InterruptContextCount, NULL, NULL},
> >> +  {L"Reference to Context Interrupt Array", 4, 48, L"0x%x", NULL,
> >> +   (VOID**)&InterruptContextOffset, NULL, NULL},
> >> +  {L"Number of PMU Interrupts", 4, 52, L"%d", NULL,
> >> +   (VOID**)&PmuInterruptCount, NULL, NULL},
> >> +  {L"Reference to PMU Interrupt Array", 4, 56, L"0x%x", NULL,
> >> +   (VOID**)&PmuInterruptOffset, NULL, NULL},
> >> +
> >> +  // Interrupt Array
> >> +  {L"SMMU_NSgIrpt", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"SMMU_NSgIrpt interrupt flags", 4, 64, L"0x%x", NULL, NULL, NULL,
> NULL},
> >> +  {L"SMMU_NSgCfgIrpt", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"SMMU_NSgCfgIrpt interrupt flags", 4, 72, L"0x%x", NULL, NULL, NULL,
> NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the SMMUv1/2 Node Interrupt Array.
> >> +*/
> >> +STATIC CONST ACPI_PARSER InterruptArrayParser[] = {
> >> +  {L"  Interrupt GSIV", 4, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"  Flags", 4, 4, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT ID Mapping.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeIdMappingParser[] = {
> >> +  {L"  Input base", 4, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"  Number of IDs", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"  Output base", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"  Output reference", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"  Flags", 4, 16, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT SMMUv3 node.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeSmmuV3Parser[] = {
> >> +  PARSE_IORT_NODE_HEADER (NULL, NULL),
> >> +  {L"Base Address", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"VATOS Address", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Model", 4, 40, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Event", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PRI", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"GERR", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Sync", 4, 56, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT ITS node.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeItsParser[] = {
> >> +  PARSE_IORT_NODE_HEADER (
> >> +    ValidateItsIdMappingCount,
> >> +    ValidateItsIdArrayReference
> >> +    ),
> >> +  {L"  Number of ITSs", 4, 16, L"%d", NULL, (VOID**)&ItsCount, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the ITS ID.
> >> +*/
> >> +STATIC CONST ACPI_PARSER ItsIdParser[] = {
> >> +  { L"  GIC ITS Identifier", 4, 0, L"%d", NULL, NULL, NULL }
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT Names Component node.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeNamedComponentParser[] = {
> >> +  PARSE_IORT_NODE_HEADER (NULL, NULL),
> >> +  {L"Node Flags", 4, 16, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Memory access properties", 8, 20, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Device memory address size limit", 1, 28, L"%d", NULL, NULL, NULL,
> NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT Root Complex node.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodeRootComplexParser[] = {
> >> +  PARSE_IORT_NODE_HEADER (NULL, NULL),
> >> +  {L"Memory access properties", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"ATS Attribute", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"PCI Segment number", 4, 28, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the IORT PMCG node.
> >> +*/
> >> +STATIC CONST ACPI_PARSER IortNodePmcgParser[] = {
> >> +  PARSE_IORT_NODE_HEADER (NULL, NULL),
> >> +  {L"Base Address", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Overflow interrupt GSIV", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Node reference", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},
> >> +};
> >> +
> >> +/** This function validates the ID Mapping array count for the ITS node.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateItsIdMappingCount (
> >> +  IN UINT8* Ptr,
> >> +  VOID*     Context
> >> +  )
> >> +{
> >> +  if (*(UINT32*)Ptr != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (L"\nERROR: IORT ID Mapping count must be zero.");
> >> +  }
> >> +}
> >> +
> >> +/** This function validates the ID Mapping array offset for the ITS node.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateItsIdArrayReference (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +  if (*(UINT32*)Ptr != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (L"\nERROR: IORT ID Mapping offset must be zero.");
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the IORT Node Id Mapping array.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the IORT Table.
> >> +  @param [in] MappingCount   The ID Mapping count.
> >> +  @param [in] MappingOffset  The offset of the ID Mapping array
> >> +                             from the start of the IORT table.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodeIdMappings (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT32 MappingCount,
> >> +  IN UINT32 MappingOffset
> >> +  )
> >> +{
> >> +  UINT8* IdMappingPtr;
> >> +  UINT32 Index;
> >> +  UINT32 Offset;
> >> +  CHAR8  Buffer[40];  // Used for AsciiName param of ParseAcpi
> >> +
> >> +  IdMappingPtr = Ptr + MappingOffset;
> >> +  Index = 0;
> >> +  while (Index < MappingCount) {
> >> +    AsciiSPrint (
> >> +      Buffer,
> >> +      sizeof (Buffer),
> >> +      "ID Mapping [%d]",
> >> +      Index
> >> +      );
> >> +    Offset = ParseAcpi (
> >> +               TRUE,
> >> +               4,
> >> +               Buffer,
> >> +               IdMappingPtr,
> >> +               20,
> >> +               PARSER_PARAMS (IortNodeIdMappingParser)
> >> +               );
> >> +    IdMappingPtr += Offset;
> >> +    Index++;
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the IORT SMMUv1/2 node.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the buffer.
> >> +  @param [in] Length         Length of the buffer.
> >> +  @param [in] MappingCount   The ID Mapping count.
> >> +  @param [in] MappingOffset  The offset of the ID Mapping array
> >> +                             from the start of the IORT table.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodeSmmuV1V2 (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length,
> >> +  IN UINT32 MappingCount,
> >> +  IN UINT32 MappingOffset
> >> +  )
> >> +{
> >> +  UINT32 Index;
> >> +  UINT32 Offset;
> >> +  CHAR8  Buffer[50];  // Used for AsciiName param of ParseAcpi
> >> +
> >> +  UINT8* ArrayPtr;
> >> +
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    2,
> >> +    "SMMUv1 or SMMUv2 Node",
> >> +    Ptr,
> >> +    Length,
> >> +    PARSER_PARAMS (IortNodeSmmuV1V2Parser)
> >> +    );
> >> +
> >> +  ArrayPtr = Ptr + *InterruptContextOffset;
> >> +  Index = 0;
> >> +  while (Index < *InterruptContextCount) {
> >> +    AsciiSPrint (
> >> +      Buffer,
> >> +      sizeof (Buffer),
> >> +      "Context Interrupts Array [%d]",
> >> +      Index
> >> +      );
> >> +    Offset = ParseAcpi (
> >> +               TRUE,
> >> +               4,
> >> +               Buffer,
> >> +               ArrayPtr,
> >> +               8,
> >> +               PARSER_PARAMS (InterruptArrayParser)
> >> +               );
> >> +    ArrayPtr += Offset;
> >> +    Index++;
> >> +  }
> >> +
> >> +  ArrayPtr = Ptr + *PmuInterruptOffset;
> >> +  Index = 0;
> >> +  while (Index < *PmuInterruptCount) {
> >> +    AsciiSPrint (
> >> +      Buffer,
> >> +      sizeof (Buffer),
> >> +      "PMU Interrupts Array [%d]",
> >> +      Index
> >> +      );
> >> +    Offset = ParseAcpi (
> >> +               TRUE,
> >> +               4,
> >> +               Buffer,
> >> +               ArrayPtr,
> >> +               8,
> >> +               PARSER_PARAMS (InterruptArrayParser)
> >> +               );
> >> +    ArrayPtr += Offset;
> >> +    Index++;
> >> +  }
> >> +
> >> +  if (*IortIdMappingCount != 0) {
> >> +    DumpIortNodeIdMappings (Ptr, MappingCount, MappingOffset);
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the IORT SMMUv3 node.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the buffer.
> >> +  @param [in] Length         Length of the buffer.
> >> +  @param [in] MappingCount   The ID Mapping count.
> >> +  @param [in] MappingOffset  The offset of the ID Mapping array
> >> +                             from the start of the IORT table.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodeSmmuV3 (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length,
> >> +  IN UINT32 MappingCount,
> >> +  IN UINT32 MappingOffset
> >> +  )
> >> +{
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    2,
> >> +    "SMMUV3 Node",
> >> +    Ptr,
> >> +    Length,
> >> +    PARSER_PARAMS (IortNodeSmmuV3Parser)
> >> +    );
> >> +
> >> +  if (*IortIdMappingCount != 0) {
> >> +    DumpIortNodeIdMappings (Ptr, MappingCount, MappingOffset);
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the IORT ITS node.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the buffer.
> >> +  @param [in] Length         Length of the buffer.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodeIts (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT32 Index;
> >> +  UINT8* ItsIdPtr;
> >> +  CHAR8  Buffer[80];  // Used for AsciiName param of ParseAcpi
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             2,
> >> +             "ITS Node",
> >> +             Ptr,
> >> +             Length,
> >> +             PARSER_PARAMS (IortNodeItsParser)
> >> +             );
> >> +
> >> +  ItsIdPtr = Ptr + Offset;
> >> +  Index = 0;
> >> +  while (Index < *ItsCount) {
> >> +    AsciiSPrint (
> >> +      Buffer,
> >> +      sizeof (Buffer),
> >> +      "GIC ITS Identifier Array [%d]",
> >> +      Index
> >> +      );
> >> +    Offset = ParseAcpi (
> >> +               TRUE,
> >> +               4,
> >> +               Buffer,
> >> +               ItsIdPtr,
> >> +               4,
> >> +               PARSER_PARAMS (ItsIdParser)
> >> +               );
> >> +    ItsIdPtr += Offset;
> >> +    Index++;
> >> +  }
> >> +
> >> +  // Note: ITS does not have the ID Mappings Array
> >> +}
> >> +
> >> +/** This function parses the IORT Named Component node.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the buffer.
> >> +  @param [in] Length         Length of the buffer.
> >> +  @param [in] MappingCount   The ID Mapping count.
> >> +  @param [in] MappingOffset  The offset of the ID Mapping array
> >> +                             from the start of the IORT table.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodeNamedComponent (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length,
> >> +  IN UINT32 MappingCount,
> >> +  IN UINT32 MappingOffset
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT32 Index;
> >> +  UINT8* DeviceNamePtr;
> >> +  UINT32 DeviceNameLength;
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             2,
> >> +             "Named Component Node",
> >> +             Ptr,
> >> +             Length,
> >> +             PARSER_PARAMS (IortNodeNamedComponentParser)
> >> +             );
> >> +
> >> +  DeviceNamePtr = Ptr + Offset;
> >> +  // Estimate the Device Name length
> >> +  DeviceNameLength = Length - Offset - (MappingCount * 20);
> >> +  PrintFieldName (2, L"Device Object Name");
> >> +  Index = 0;
> >> +  while ((Index < DeviceNameLength) && (DeviceNamePtr[Index] != 0)) {
> >> +    Print (L"%c", DeviceNamePtr[Index++]);
> >> +  }
> >> +  Print (L"\n");
> >> +
> >> +  if (*IortIdMappingCount != 0) {
> >> +    DumpIortNodeIdMappings (Ptr, MappingCount, MappingOffset);
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the IORT Root Complex node.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the buffer.
> >> +  @param [in] Length         Length of the buffer.
> >> +  @param [in] MappingCount   The ID Mapping count.
> >> +  @param [in] MappingOffset  The offset of the ID Mapping array
> >> +                             from the start of the IORT table.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodeRootComplex (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length,
> >> +  IN UINT32 MappingCount,
> >> +  IN UINT32 MappingOffset
> >> +  )
> >> +{
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    2,
> >> +    "Root Complex Node",
> >> +    Ptr,
> >> +    Length,
> >> +    PARSER_PARAMS (IortNodeRootComplexParser)
> >> +    );
> >> +
> >> +  if (*IortIdMappingCount != 0) {
> >> +    DumpIortNodeIdMappings (Ptr, MappingCount, MappingOffset);
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the IORT PMCG node.
> >> +
> >> +  @param [in] Ptr            Pointer to the start of the buffer.
> >> +  @param [in] Length         Length of the buffer.
> >> +  @param [in] MappingCount   The ID Mapping count.
> >> +  @param [in] MappingOffset  The offset of the ID Mapping array
> >> +                             from the start of the IORT table.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpIortNodePmcg (
> >> +  IN UINT8* Ptr,
> >> +  IN UINT16 Length,
> >> +  IN UINT32 MappingCount,
> >> +  IN UINT32 MappingOffset
> >> +)
> >> +{
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    2,
> >> +    "PMCG Node",
> >> +    Ptr,
> >> +    Length,
> >> +    PARSER_PARAMS (IortNodePmcgParser)
> >> +  );
> >> +
> >> +  if (*IortIdMappingCount != 0) {
> >> +    DumpIortNodeIdMappings (Ptr, MappingCount, MappingOffset);
> >> +  }
> >> +
> >> +  if (*IortIdMappingCount > 1) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"ERROR: ID mapping must not be greater than 1. Id Mapping Count
> =%d\n",
> >> +      *IortIdMappingCount
> >> +      );
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the ACPI IORT table.
> >> +  When trace is enabled this function parses the IORT table and
> >> +  traces the ACPI fields.
> >> +
> >> +  This function also parses the following nodes:
> >> +    - ITS Group
> >> +    - Named Component
> >> +    - Root Complex
> >> +    - SMMUv1/2
> >> +    - SMMUv3
> >> +    - PMCG
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiIort (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT32 Index;
> >> +  UINT8* NodePtr;
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    0,
> >> +    "IORT",
> >> +    Ptr,
> >> +    AcpiTableLength,
> >> +    PARSER_PARAMS (IortParser)
> >> +    );
> >> +  Offset = *IortNodeOffset;
> >> +  NodePtr = Ptr + Offset;
> >> +  Index = 0;
> >> +
> >> +  while ((Index < *IortNodeCount) && (Offset < AcpiTableLength)) {
> >> +    // Parse the IORT Node Header
> >> +    ParseAcpi (
> >> +      FALSE,
> >> +      0,
> >> +      "IORT Node Header",
> >> +      NodePtr,
> >> +      16,
> >> +      PARSER_PARAMS (IortNodeHeaderParser)
> >> +      );
> >> +    if (*IortNodeLength == 0) {
> >> +      IncrementErrorCount ();
> >> +      Print (L"ERROR: Parser error. Invalid table data.\n");
> >> +      return;
> >> +    }
> >> +
> >> +    PrintFieldName (2, L"* Node Offset *");
> >> +    Print (L"0x%x\n", Offset);
> >> +
> >> +    switch (*IortNodeType) {
> >> +      case EIORT_NODE_ITS_GROUP:
> >> +        DumpIortNodeIts (
> >> +          NodePtr,
> >> +          *IortNodeLength
> >> +          );
> >> +        break;
> >> +      case EIORT_NODE_NAMED_COMPONENT:
> >> +        DumpIortNodeNamedComponent (
> >> +          NodePtr,
> >> +          *IortNodeLength,
> >> +          *IortIdMappingCount,
> >> +          *IortIdMappingOffset
> >> +          );
> >> +        break;
> >> +      case EIORT_NODE_ROOT_COMPLEX:
> >> +        DumpIortNodeRootComplex (
> >> +          NodePtr,
> >> +          *IortNodeLength,
> >> +          *IortIdMappingCount,
> >> +          *IortIdMappingOffset
> >> +          );
> >> +        break;
> >> +      case EIORT_NODE_SMMUV1_V2:
> >> +        DumpIortNodeSmmuV1V2 (
> >> +          NodePtr,
> >> +          *IortNodeLength,
> >> +          *IortIdMappingCount,
> >> +          *IortIdMappingOffset
> >> +          );
> >> +        break;
> >> +      case EIORT_NODE_SMMUV3:
> >> +        DumpIortNodeSmmuV3 (
> >> +          NodePtr,
> >> +          *IortNodeLength,
> >> +          *IortIdMappingCount,
> >> +          *IortIdMappingOffset
> >> +          );
> >> +        break;
> >> +      case EIORT_NODE_PMCG:
> >> +        DumpIortNodePmcg (
> >> +          NodePtr,
> >> +          *IortNodeLength,
> >> +          *IortIdMappingCount,
> >> +          *IortIdMappingOffset
> >> +        );
> >> +        break;
> >> +
> >> +      default:
> >> +        IncrementErrorCount ();
> >> +        Print (L"ERROR: Unsupported IORT Node type = %d\n",
> *IortNodeType);
> >> +    } // switch
> >> +
> >> +    NodePtr += (*IortNodeLength);
> >> +    Offset += (*IortNodeLength);
> >> +  } // while
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +IortParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +           EFI_ACPI_6_2_IO_REMAPPING_TABLE_SIGNATURE,
> >> +           ParseAcpiIort
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +IortParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +           EFI_ACPI_6_2_IO_REMAPPING_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParserLib.inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParserLib.in
> f
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..00edbd4fe778bd9b601e2
> caf3ac7fd3368d9945f
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParserLib.in
> f
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = IortParserLib
> >> +  FILE_GUID      = 31CF9A50-0B2A-4F33-BD2C-3606E35AA9EF
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = IortParserLibConstructor
> >> +  DESTRUCTOR     = IortParserLibDestructor
> >> +
> >> +[Sources]
> >> +  IortParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..5a30c04195145c88d392d
> dca164a060639b7456a
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParser.c
> >> @@ -0,0 +1,358 @@
> >> +/**
> >> +  MADT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local Variables
> >> +STATIC CONST UINT8* MadtInterruptControllerType;
> >> +STATIC CONST UINT8* MadtInterruptControllerLength;
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +// Forward declarations
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateGICDSystemVectorBase (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +);
> >> +
> >> +/** An ACPI_PARSER array describing the GICC Interrupt
> >> +    Controller Structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GicCParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"CPU Interface Number", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"ACPI Processor UID", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Parking Protocol Version", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Performance Interrupt GSIV", 4, 20, L"0x%x", NULL, NULL, NULL,
> NULL},
> >> +  {L"Parked Address", 8, 24, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Physical Base Address", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"GICV", 8, 40, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"GICH", 8, 48, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"VGIC Maintenance interrupt", 4, 56, L"0x%x", NULL, NULL, NULL,
> NULL},
> >> +  {L"GICR Base Address", 8, 60, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"MPIDR", 8, 68, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Processor Power Efficiency Class", 1, 76, L"0x%x", NULL, NULL, NULL,
> >> +   NULL},
> >> +  {L"Reserved", 3, 77, L"%x %x %x", Dump3Chars, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the GICD Interrupt
> >> +    Controller Structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GicDParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"GIC ID", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Physical Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"System Vector Base", 4, 16, L"0x%x", NULL, NULL,
> >> +    ValidateGICDSystemVectorBase, NULL},
> >> +  {L"GIC Version", 1, 20, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 3, 21, L"%x %x %x", Dump3Chars, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the MSI Frame Interrupt
> >> +    Controller Structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GicMSIFrameParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"MSI Frame ID", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Physical Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"SPI Count", 2, 20, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"SPI Base", 2, 22, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the GICR Interrupt
> >> +    Controller Structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GicRParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Discovery Range Base Address", 8, 4, L"0x%lx", NULL, NULL, NULL,
> >> +   NULL},
> >> +  {L"Discovery Range Length", 4, 12, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the GIC ITS Interrupt
> >> +    Controller Structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER GicITSParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"GIC ITS ID", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Physical Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 4, 16, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI MADT Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER MadtParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"Local Interrupt Controller Address", 4, 36, L"0x%x", NULL, NULL, NULL,
> >> +   NULL},
> >> +  {L"Flags", 4, 40, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the MADT Interrupt
> >> +    Controller Structure Header Structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER MadtInterruptControllerHeaderParser[] = {
> >> +  {NULL, 1, 0, NULL, NULL, (VOID**)&MadtInterruptControllerType, NULL,
> NULL},
> >> +  {L"Length", 1, 1, NULL, NULL, (VOID**)&MadtInterruptControllerLength,
> NULL,
> >> +   NULL},
> >> +  {L"Reserved", 2, 2, NULL, NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function validates the System Vector Base in the GICD.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateGICDSystemVectorBase (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +)
> >> +{
> >> +  if (*(UINT32*)Ptr != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: System Vector Base must be zero."
> >> +    );
> >> +  }
> >> +}
> >> +
> >> +/** This function parses the ACPI MADT table.
> >> +  When trace is enabled this function parses the MADT table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function currently parses the following Interrupt Controller
> >> +  Structures:
> >> +    - GICC
> >> +    - GICD
> >> +    - GIC MSI Frame
> >> +    - GICR
> >> +    - GIC ITS
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiMadt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT8* InterruptContollerPtr;
> >> +  UINT32 GICDCount = 0;
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             0,
> >> +             "MADT",
> >> +             Ptr,
> >> +             AcpiTableLength,
> >> +             PARSER_PARAMS (MadtParser)
> >> +             );
> >> +  InterruptContollerPtr = Ptr + Offset;
> >> +
> >> +  while (Offset < AcpiTableLength) {
> >> +    // Parse Interrupt Controller Structure to obtain Length.
> >> +    ParseAcpi (
> >> +      FALSE,
> >> +      0,
> >> +      NULL,
> >> +      InterruptContollerPtr,
> >> +      2,  //  Length is 1 byte at offset 1
> >> +      PARSER_PARAMS (MadtInterruptControllerHeaderParser)
> >> +      );
> >> +
> >> +    if (((Offset + (*MadtInterruptControllerLength)) > AcpiTableLength) ||
> >> +        (*MadtInterruptControllerLength < 4)) {
> >> +      IncrementErrorCount ();
> >> +      Print (
> >> +         L"ERROR: Invalid Interrupt Controller Length,"
> >> +          " Type = %d, Length = %d\n",
> >> +         *MadtInterruptControllerType,
> >> +         *MadtInterruptControllerLength
> >> +         );
> >> +      break;
> >> +    }
> >> +
> >> +    switch (*MadtInterruptControllerType) {
> >> +      case EFI_ACPI_6_2_GIC: {
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          "GICC",
> >> +          InterruptContollerPtr,
> >> +          *MadtInterruptControllerLength,
> >> +          PARSER_PARAMS (GicCParser)
> >> +          );
> >> +        break;
> >> +      }
> >> +
> >> +      case EFI_ACPI_6_2_GICD: {
> >> +        if (++GICDCount > 1) {
> >> +          IncrementErrorCount ();
> >> +          Print (
> >> +            L"ERROR: Only one GICD must be present,"
> >> +              " GICDCount = %d\n",
> >> +            GICDCount
> >> +            );
> >> +        }
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          "GICD",
> >> +          InterruptContollerPtr,
> >> +          *MadtInterruptControllerLength,
> >> +          PARSER_PARAMS (GicDParser)
> >> +          );
> >> +        break;
> >> +      }
> >> +
> >> +      case EFI_ACPI_6_2_GIC_MSI_FRAME: {
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          "GIC MSI Frame",
> >> +          InterruptContollerPtr,
> >> +          *MadtInterruptControllerLength,
> >> +          PARSER_PARAMS (GicMSIFrameParser)
> >> +          );
> >> +        break;
> >> +      }
> >> +
> >> +      case EFI_ACPI_6_2_GICR: {
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          "GICR",
> >> +          InterruptContollerPtr,
> >> +          *MadtInterruptControllerLength,
> >> +          PARSER_PARAMS (GicRParser)
> >> +          );
> >> +        break;
> >> +      }
> >> +
> >> +      case EFI_ACPI_6_2_GIC_ITS: {
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          "GIC ITS",
> >> +          InterruptContollerPtr,
> >> +          *MadtInterruptControllerLength,
> >> +          PARSER_PARAMS (GicITSParser)
> >> +          );
> >> +        break;
> >> +      }
> >> +
> >> +      default: {
> >> +        IncrementErrorCount ();
> >> +        Print (
> >> +          L"ERROR: Unknown Interrupt Controller Structure,"
> >> +            " Type = %d, Length = %d\n",
> >> +          *MadtInterruptControllerType,
> >> +          *MadtInterruptControllerLength
> >> +          );
> >> +      }
> >> +    } // switch
> >> +
> >> +    InterruptContollerPtr += *MadtInterruptControllerLength;
> >> +    Offset += *MadtInterruptControllerLength;
> >> +  } // while
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +MadtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiMadt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +MadtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParserLi
> b.inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParserLi
> b.inf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..0b2b6042bbfb510831e86
> 6aa1dc433467daac49e
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParserLi
> b.inf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = MadtParserLib
> >> +  FILE_GUID      = CA0A6AE1-11A1-48C8-A561-D2CFA917962A
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = MadtParserLibConstructor
> >> +  DESTRUCTOR     = MadtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  MadtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..10bfec901a7c504e7022c2
> 1aafbac4c875d8886c
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParser.c
> >> @@ -0,0 +1,139 @@
> >> +/**
> >> +  MCFG table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - PCI Firmware Specification - Revision 3.2, January 26, 2015.
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI MCFG Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER McfgParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"Reserved", 8, 36, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the PCI configuration Space
> >> +    Base Address structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER PciCfgSpaceBaseAddrParser[] = {
> >> +  {L"Base Address", 8, 0, L"0x%lx", NULL, NULL, NULL, NULL},
> >> +  {L"PCI Segment Group No.", 2, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Start Bus No.", 1, 10, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"End Bus No.", 1, 11, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 4, 12, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function parses the ACPI MCFG table.
> >> +  When trace is enabled this function parses the MCFG table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiMcfg (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT32 PciCfgOffset;
> >> +  UINT8* PciCfgSpacePtr;
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             0,
> >> +             "MCFG",
> >> +             Ptr,
> >> +             AcpiTableLength,
> >> +             PARSER_PARAMS (McfgParser)
> >> +             );
> >> +
> >> +  PciCfgSpacePtr = Ptr + Offset;
> >> +
> >> +  while (Offset < AcpiTableLength) {
> >> +    PciCfgOffset = ParseAcpi (
> >> +                     TRUE,
> >> +                     2,
> >> +                     "PCI Configuration Space",
> >> +                     PciCfgSpacePtr,
> >> +                     (AcpiTableLength - Offset),
> >> +                     PARSER_PARAMS (PciCfgSpaceBaseAddrParser)
> >> +                     );
> >> +    PciCfgSpacePtr += PciCfgOffset;
> >> +    Offset += PciCfgOffset;
> >> +  }
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +McfgParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_PCI_EXPRESS_MEMORY_MAPPED_CONFIGURATION_SPACE_BA
> SE_ADDRESS_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiMcfg
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +McfgParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_PCI_EXPRESS_MEMORY_MAPPED_CONFIGURATION_SPACE_BA
> SE_ADDRESS_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParserLib
> .inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParserLib
> .inf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..47d1d56a52896ec7d4021
> e8e23aef2afef256cb3
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParserLib
> .inf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = McfgParserLib
> >> +  FILE_GUID      = 47E8C10D-6CE0-455C-A7BC-83A7B0895C9F
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = McfgParserLibConstructor
> >> +  DESTRUCTOR     = McfgParserLibDestructor
> >> +
> >> +[Sources]
> >> +  McfgParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..fec5508d222ef14e99c2d3
> 92a0033e6c6d5faa3e
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParser.c
> >> @@ -0,0 +1,214 @@
> >> +/**
> >> +  RSDP table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local Variables
> >> +STATIC CONST UINT64* XsdtAddress;
> >> +
> >> +/** This function validates the RSDT Address.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateRsdtAddress (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** This function validates the XSDT Address.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateXsdtAddress (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** An array describing the ACPI RSDP Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER RsdpParser[] = {
> >> +  {L"Signature", 8, 0, NULL, Dump8Chars, NULL, NULL, NULL},
> >> +  {L"Checksum", 1, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Oem ID", 6, 9, NULL, Dump6Chars, NULL, NULL, NULL},
> >> +  {L"Revision", 1, 15, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"RSDT Address", 4, 16, L"0x%x", NULL, NULL, ValidateRsdtAddress,
> NULL},
> >> +  {L"Length", 4, 20, L"%d", NULL, NULL, NULL, NULL},
> >> +  {L"XSDT Address", 8, 24, L"0x%lx", NULL, (VOID**)&XsdtAddress,
> >> +   ValidateXsdtAddress, NULL},
> >> +  {L"Extended Checksum", 1, 32, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 3, 33, L"%x %x %x", Dump3Chars, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function validates the RSDT Address.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateRsdtAddress (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +#if defined(MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  // Reference: Server Base Boot Requirements System Software on ARM
> Platforms
> >> +  // Section: 4.2.1.1 RSDP
> >> +  // Root System Description Pointer (RSDP), ACPI � 5.2.5.
> >> +  //   - Within the RSDP, the RsdtAddress field must be null (zero) and the
> >> +  //     XsdtAddresss MUST be a valid, non-null, 64-bit value.
> >> +  UINT32 RsdtAddr = *(UINT32*)Ptr;
> >> +  if (RsdtAddr != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: Rsdt Address = 0x%p. This must be NULL on ARM
> Platforms.",
> >> +      RsdtAddr
> >> +      );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** This function validates the XSDT Address.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateXsdtAddress (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +#if defined(MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  // Reference: Server Base Boot Requirements System Software on ARM
> Platforms
> >> +  // Section: 4.2.1.1 RSDP
> >> +  // Root System Description Pointer (RSDP), ACPI � 5.2.5.
> >> +  //   - Within the RSDP, the RsdtAddress field must be null (zero) and the
> >> +  //     XsdtAddresss MUST be a valid, non-null, 64-bit value.
> >> +  UINT64 XsdtAddr = *(UINT64*)Ptr;
> >> +  if (XsdtAddr == 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: Xsdt Address = 0x%p. This must not be NULL on ARM
> Platforms.",
> >> +      XsdtAddr
> >> +      );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** This function parses the ACPI RSDP table.
> >> +
> >> +  This function invokes the parser for the XSDT table.
> >> +  * Note - This function does not support parsing of RSDT table.
> >> +
> >> +  This function also performs a RAW dump of the ACPI table and
> >> +  validates the checksum.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiRsdp (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  if (Trace) {
> >> +    DumpRaw (Ptr, AcpiTableLength);
> >> +    VerifyChecksum (TRUE, Ptr, AcpiTableLength);
> >> +  }
> >> +
> >> +  ParseAcpi (Trace, 0, "RSDP", Ptr, AcpiTableLength, PARSER_PARAMS
> (RsdpParser));
> >> +
> >> +  // This code currently supports parsing of XSDT table only
> >> +  // and does not parse the RSDT table. Platforms provide the
> >> +  // RSDT to enable compatibility with ACPI 1.0 operating systems.
> >> +  // Therefore the RSDT should not be used on ARM platforms.
> >> +  if ((*XsdtAddress) == 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (L"ERROR: XSDT Pointer is not set.\n");
> >> +    return;
> >> +  }
> >> +
> >> +  ProcessAcpiTable ((UINT8*)(UINTN)(*XsdtAddress));
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +RsdpParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +           RSDP_TABLE_INFO,
> >> +           ParseAcpiRsdp
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +RsdpParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +           RSDP_TABLE_INFO
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParserLib.
> inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParserLib.
> inf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..c33b8efdb66f067862ae50
> 9d64578319fc63b9f8
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParserLib.
> inf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = RsdpParserLib
> >> +  FILE_GUID      = 9365CEB3-52DC-488D-9E2E-C4E1E3062FA9
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = RsdpParserLibConstructor
> >> +  DESTRUCTOR     = RsdpParserLibDestructor
> >> +
> >> +[Sources]
> >> +  RsdpParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..f6a4c416aa259af16aa0b7
> 76dcc058604b5c17c2
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParser.c
> >> @@ -0,0 +1,187 @@
> >> +/**
> >> +  SLIT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/PrintLib.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local Variables
> >> +STATIC CONST UINT64* SlitSystemLocalityCount;
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI SLIT table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SlitParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"Number of System Localities", 8, 36, L"0x%lx", NULL,
> >> +   (VOID**)&SlitSystemLocalityCount, NULL, NULL}
> >> +};
> >> +
> >> +/** Macro to get the value of a System Locality
> >> +*/
> >> +#define SLIT_ELEMENT(Ptr, i, j) *(Ptr + (i * LocalityCount) + j)
> >> +
> >> +/** This function parses the ACPI SLIT table.
> >> +  When trace is enabled this function parses the SLIT table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function also validates System Localities for the following:
> >> +    - Diagonal elements have a normalized value of 10
> >> +    - Relative distance from System Locality at i*N+j is same as
> >> +      j*N+i
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiSlit (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT64 i;
> >> +  UINT64 j;
> >> +  UINT64 LocalityCount;
> >> +  UINT8* LocalityPtr;
> >> +  CHAR16 Buffer[80];  // Used for AsciiName param of ParseAcpi
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             0,
> >> +             "SLIT",
> >> +             Ptr,
> >> +             AcpiTableLength,
> >> +             PARSER_PARAMS (SlitParser)
> >> +             );
> >> +  LocalityPtr = Ptr + Offset;
> >> +
> >> +  LocalityCount = *SlitSystemLocalityCount;
> >> +  // We only print the Localities if the count is less than 16
> >> +  // If the locality count is more than 16 then refer to the
> >> +  // raw data dump.
> >> +  if (LocalityCount < 16) {
> >> +    UnicodeSPrint (
> >> +      Buffer,
> >> +      sizeof (Buffer),
> >> +      L"Entry[0x%lx][0x%lx]",
> >> +      LocalityCount,
> >> +      LocalityCount
> >> +      );
> >> +    PrintFieldName (0, Buffer);
> >> +    Print (L"\n");
> >> +    Print (L"       ");
> >> +    for (j = 0; j < LocalityCount; j++) {
> >> +      Print (L" (%3d) ", j);
> >> +    }
> >> +    Print (L"\n");
> >> +    for (i = 0; i < LocalityCount; i++) {
> >> +      Print (L" (%3d) ", i);
> >> +      for (j = 0; j < LocalityCount; j++) {
> >> +        Print (L"  %3d  ", SLIT_ELEMENT (LocalityPtr, i, j));
> >> +      }
> >> +      Print (L"\n");
> >> +    }
> >> +  }
> >> +
> >> +  // Validate
> >> +  for (i = 0; i < LocalityCount; i++) {
> >> +    for (j = 0; j < LocalityCount; j++) {
> >> +      // Element[x][x] must be equal to 10
> >> +      if ((i == j) && (SLIT_ELEMENT (LocalityPtr, i, j) != 10)) {
> >> +        IncrementErrorCount ();
> >> +        Print (
> >> +          L"ERROR: Diagonal Element[0x%lx][0x%lx] (%3d)."
> >> +            " Normalized Value is not 10\n",
> >> +          i,
> >> +          j,
> >> +          SLIT_ELEMENT (LocalityPtr, i, j)
> >> +          );
> >> +      }
> >> +      // Element[i][j] must be equal to Element[j][i]
> >> +      if (SLIT_ELEMENT (LocalityPtr, i, j) !=
> >> +          SLIT_ELEMENT (LocalityPtr, j, i)) {
> >> +        IncrementErrorCount ();
> >> +        Print (
> >> +          L"ERROR: Relative distances for Element[0x%lx][0x%lx] (%3d)
> and \n"
> >> +           "Element[0x%lx][0x%lx] (%3d) do not match.\n",
> >> +          i,
> >> +          j,
> >> +          SLIT_ELEMENT (LocalityPtr, i, j),
> >> +          j,
> >> +          i,
> >> +          SLIT_ELEMENT (LocalityPtr, j, i)
> >> +          );
> >> +      }
> >> +    }
> >> +  }
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SlitParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_SYSTEM_LOCALITY_INFORMATION_TABLE_SIGNATURE,
> >> +           ParseAcpiSlit
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SlitParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_SYSTEM_LOCALITY_INFORMATION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParserLib.inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParserLib.inf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..96430ed9a98f1ccccde075
> 22b4bf90d6d22cd792
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Slit/SlitParserLib.inf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = SlitParserLib
> >> +  FILE_GUID      = 3DCF7333-367B-4D40-856A-FF0F73FB6B49
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = SlitParserLibConstructor
> >> +  DESTRUCTOR     = SlitParserLibDestructor
> >> +
> >> +[Sources]
> >> +  SlitParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..24687a708bb828c53ceb7
> a61e9e11ce00b583cd5
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParser.c
> >> @@ -0,0 +1,213 @@
> >> +/**
> >> +  SPCR table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - Microsoft Serial Port Console Redirection Table
> >> +      Specification - Version 1.03 - August 10, 2015.
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <IndustryStandard/SerialPortConsoleRedirectionTable.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** This function validates the Interrupt Type.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateInterruptType (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** This function validates the Irq.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateIrq (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI SPCR Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SpcrParser[] = {
> >> +  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}
> >> +};
> >> +
> >> +/** This function validates the Interrupt Type.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateInterruptType (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  UINT8 InterruptType = *Ptr;
> >> +  if (InterruptType !=
> >> +
> EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERRUPT_TYPE_GIC)
> {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: InterruptType = %d. This must be 8 on ARM Platforms",
> >> +      InterruptType
> >> +      );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** This function validates the Irq.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateIrq (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
> >> +  UINT8 Irq = *Ptr;
> >> +  if (Irq != 0) {
> >> +    IncrementErrorCount ();
> >> +    Print (
> >> +      L"\nERROR: Irq = %d. This must be zero on ARM Platforms\n",
> >> +      Irq
> >> +      );
> >> +  }
> >> +#endif
> >> +}
> >> +
> >> +/** 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.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiSpcr (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  // Dump the SPCR
> >> +  ParseAcpi (
> >> +    TRUE,
> >> +    0,
> >> +    "SPCR",
> >> +    Ptr,
> >> +    AcpiTableLength,
> >> +    PARSER_PARAMS (SpcrParser)
> >> +    );
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SpcrParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE,
> >> +           ParseAcpiSpcr
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SpcrParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..94add31de030ab7771fc3
> 03eba7b922270265970
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = SpcrParserLib
> >> +  FILE_GUID      = 08C17C4C-E62D-4AE4-95C5-DEF42A24A56C
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = SpcrParserLibConstructor
> >> +  DESTRUCTOR     = SpcrParserLibDestructor
> >> +
> >> +[Sources]
> >> +  SpcrParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..bee51a7ee6a3553fc40d1
> 7671acd671f0be01e59
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c
> >> @@ -0,0 +1,375 @@
> >> +/**
> >> +  SRAT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/PrintLib.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local Variables
> >> +STATIC CONST UINT8* SratRAType;
> >> +STATIC CONST UINT8* SratRALength;
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** This function validates the Reserved field in the SRAT table header.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateSratReserved (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  );
> >> +
> >> +/** This function traces the APIC Proximity Domain field.
> >> +
> >> +  @param [in] Format  Format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpSratApicProximity (
> >> +  IN  CONST CHAR16*  Format,
> >> +  IN  UINT8*         Ptr
> >> +  );
> >> +
> >> +/** An ACPI_PARSER array describing the SRAT Table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo),
> >> +  {L"Reserved", 4, 36, L"0x%x", NULL, NULL, ValidateSratReserved, NULL},
> >> +  {L"Reserved", 8, 40, L"0x%lx", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the Resource Allocation
> >> +    structure header.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratResourceAllocationParser[] = {
> >> +  {L"Type", 1, 0, NULL, NULL, (VOID**)&SratRAType, NULL, NULL},
> >> +  {L"Length", 1, 1, NULL, NULL, (VOID**)&SratRALength, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the GICC Affinity structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratGicCAffinityParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Proximity Domain", 4, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"ACPI Processor UID", 4, 6, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 10, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Clock Domain", 4, 14, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the GIC ITS Affinity structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratGicITSAffinityParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Proximity Domain", 4, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 6, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"ITS Id", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the Memory Affinity structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratMemAffinityParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Proximity Domain", 4, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 2, 6, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Base Address Low", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Base Address High", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length Low", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length High", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the APIC/SAPIC Affinity structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratApciSapicAffinityParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Proximity Domain [7:0]", 1, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"APIC ID", 1, 3, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Local SAPIC EID", 1, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Proximity Domain [31:8]", 3, 9, L"0x%x", DumpSratApicProximity,
> >> +   NULL, NULL, NULL},
> >> +  {L"Clock Domain", 4, 12, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** An ACPI_PARSER array describing the Processor Local x2APIC
> >> +    Affinity structure.
> >> +*/
> >> +STATIC CONST ACPI_PARSER SratX2ApciAffinityParser[] = {
> >> +  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Length", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
> >> +
> >> +  {L"Reserved", 2, 2, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Proximity Domain", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"X2APIC ID", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Flags", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Clock Domain", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
> >> +  {L"Reserved", 4, 20, L"0x%x", NULL, NULL, NULL, NULL}
> >> +};
> >> +
> >> +/** This function validates the Reserved field in the SRAT table header.
> >> +
> >> +  @param [in] Ptr     Pointer to the start of the field data.
> >> +  @param [in] Context Pointer to context specific information e.g. this
> >> +                      could be a pointer to the ACPI table header.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +EFIAPI
> >> +ValidateSratReserved (
> >> +  IN UINT8* Ptr,
> >> +  IN VOID*  Context
> >> +  )
> >> +{
> >> +  if (*(UINT32*)Ptr != 1) {
> >> +    IncrementErrorCount ();
> >> +    Print (L"\nERROR: Reserved should be 1 for backward
> compatibility.\n");
> >> +  }
> >> +}
> >> +
> >> +/** This function traces the APIC Proximity Domain field.
> >> +
> >> +  @param [in] Format  Format string for tracing the data.
> >> +  @param [in] Ptr     Pointer to the start of the buffer.
> >> +*/
> >> +STATIC
> >> +VOID
> >> +DumpSratApicProximity (
> >> + IN CONST CHAR16* Format,
> >> + IN UINT8*        Ptr
> >> + )
> >> +{
> >> +  UINT32 ProximityDomain = Ptr[0] | (Ptr[1] << 8) | (Ptr[2] << 16);
> >> +  Print (Format, ProximityDomain);
> >> +}
> >> +
> >> +/** This function parses the ACPI SRAT table.
> >> +  When trace is enabled this function parses the SRAT table and
> >> +  traces the ACPI table fields.
> >> +
> >> +  This function parses the following Resource Allocation Structures:
> >> +    - Processor Local APIC/SAPIC Affinity Structure
> >> +    - Memory Affinity Structure
> >> +    - Processor Local x2APIC Affinity Structure
> >> +    - GICC Affinity Structure
> >> +
> >> +  This function also performs validation of the ACPI table fields.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiSrat (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32 Offset;
> >> +  UINT8* ResourcePtr;
> >> +  UINT32 GicCAffinityIndex = 0;
> >> +  UINT32 GicITSAffinityIndex = 0;
> >> +  UINT32 MemoryAffinityIndex = 0;
> >> +  UINT32 ApicSapicAffinityIndex = 0;
> >> +  UINT32 X2ApicAffinityIndex = 0;
> >> +  CHAR8  Buffer[80];  // Used for AsciiName param of ParseAcpi
> >> +
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  Offset = ParseAcpi (
> >> +             TRUE,
> >> +             0,
> >> +             "SRAT",
> >> +             Ptr,
> >> +             AcpiTableLength,
> >> +             PARSER_PARAMS (SratParser)
> >> +             );
> >> +  ResourcePtr = Ptr + Offset;
> >> +
> >> +  while (Offset < AcpiTableLength) {
> >> +    ParseAcpi (
> >> +      FALSE,
> >> +      0,
> >> +      NULL,
> >> +      ResourcePtr,
> >> +      2,  // The length is 1 byte at offset 1
> >> +      PARSER_PARAMS (SratResourceAllocationParser)
> >> +      );
> >> +
> >> +    switch (*SratRAType) {
> >> +      case EFI_ACPI_6_2_GICC_AFFINITY:
> >> +        AsciiSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          "GICC Affinity Structure [%d]",
> >> +          GicCAffinityIndex++
> >> +          );
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          Buffer,
> >> +          ResourcePtr,
> >> +          *SratRALength,
> >> +          PARSER_PARAMS (SratGicCAffinityParser)
> >> +          );
> >> +        break;
> >> +
> >> +      case EFI_ACPI_6_2_GIC_ITS_AFFINITY:
> >> +        AsciiSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          "GIC ITS Affinity Structure [%d]",
> >> +          GicITSAffinityIndex++
> >> +        );
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          Buffer,
> >> +          ResourcePtr,
> >> +          *SratRALength,
> >> +          PARSER_PARAMS (SratGicITSAffinityParser)
> >> +        );
> >> +        break;
> >> +
> >> +      case EFI_ACPI_6_2_MEMORY_AFFINITY:
> >> +        AsciiSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          "Memory Affinity Structure [%d]",
> >> +          MemoryAffinityIndex++
> >> +          );
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          Buffer,
> >> +          ResourcePtr,
> >> +          *SratRALength,
> >> +          PARSER_PARAMS (SratMemAffinityParser)
> >> +          );
> >> +        break;
> >> +
> >> +      case EFI_ACPI_6_2_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY:
> >> +        AsciiSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          "APIC/SAPIC Affinity Structure [%d]",
> >> +          ApicSapicAffinityIndex++
> >> +          );
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          Buffer,
> >> +          ResourcePtr,
> >> +          *SratRALength,
> >> +          PARSER_PARAMS (SratApciSapicAffinityParser)
> >> +          );
> >> +        break;
> >> +
> >> +      case EFI_ACPI_6_2_PROCESSOR_LOCAL_X2APIC_AFFINITY:
> >> +        AsciiSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          "X2APIC Affinity Structure [%d]",
> >> +          X2ApicAffinityIndex++
> >> +          );
> >> +        ParseAcpi (
> >> +          TRUE,
> >> +          2,
> >> +          Buffer,
> >> +          ResourcePtr,
> >> +          *SratRALength,
> >> +          PARSER_PARAMS (SratX2ApciAffinityParser)
> >> +          );
> >> +        break;
> >> +
> >> +      default:
> >> +        IncrementErrorCount ();
> >> +        Print (L"ERROR: Unknown SRAT Affinity type = 0x%x\n",
> *SratRAType);
> >> +        break;
> >> +    }
> >> +
> >> +    ResourcePtr += (*SratRALength);
> >> +    Offset += (*SratRALength);
> >> +  }
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SratParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_SYSTEM_RESOURCE_AFFINITY_TABLE_SIGNATURE,
> >> +           ParseAcpiSrat
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SratParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_SYSTEM_RESOURCE_AFFINITY_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParserLib.in
> f
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..5823bab50df6497488e41
> faaa5ae7a813aee4792
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = SratParserLib
> >> +  FILE_GUID      = 106B22CC-1499-46D4-B6FB-341BB878FBC5
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = SratParserLibConstructor
> >> +  DESTRUCTOR     = SratParserLibDestructor
> >> +
> >> +[Sources]
> >> +  SratParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..4c56242b351c8c04d3123
> 49086e353c94e430f32
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParser.c
> >> @@ -0,0 +1,92 @@
> >> +/**
> >> +  SSDT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +/** This function parses the ACPI SSDT table.
> >> +  When trace is enabled this function parses the SSDT table and
> >> +  traces the ACPI table fields.
> >> +  For the SSDT table only the ACPI header fields are
> >> +  parsed and traced.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiSsdt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  if (!Trace) {
> >> +    return;
> >> +  }
> >> +
> >> +  DumpAcpiHeader (Ptr);
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SsdtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiSsdt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +SsdtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_SECONDARY_SYSTEM_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..57e55eaf0824b6c8d05ce
> 9b79d9598edd8f673d9
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = SsdtParserLib
> >> +  FILE_GUID      = BC2FF538-8FEB-48E3-92D1-ECA01B277B2C
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = SsdtParserLibConstructor
> >> +  DESTRUCTOR     = SsdtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  SsdtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParser.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParser.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..9b9f314b748d4281dcc56
> d707798e6eb1c2f7039
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParser.c
> >> @@ -0,0 +1,198 @@
> >> +/**
> >> +  XSDT table parser
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +
> >> +  @par Reference(s):
> >> +    - ACPI 6.2 Specification - Errata A, September 2017
> >> +**/
> >> +
> >> +#include <IndustryStandard/Acpi.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/PrintLib.h>
> >> +#include <Library/AcpiView/AcpiParser.h>
> >> +#include <Library/AcpiView/AcpiTableParser.h>
> >> +
> >> +// Local variables
> >> +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
> >> +
> >> +/** An ACPI_PARSER array describing the ACPI XSDT table.
> >> +*/
> >> +STATIC CONST ACPI_PARSER XsdtParser[] = {
> >> +  PARSE_ACPI_HEADER (&AcpiHdrInfo)
> >> +};
> >> +
> >> +CONST ACPI_DESCRIPTION_HEADER_INFO* CONST
> >> +EFIAPI
> >> +GetAcpiXsdtHeaderInfo (
> >> +  VOID
> >> +)
> >> +{
> >> +  return &AcpiHdrInfo;
> >> +}
> >> +
> >> +/** This function parses the ACPI XSDT table
> >> +  and optionally traces the ACPI table fields.
> >> +
> >> +  This function also performs validation of the XSDT table.
> >> +
> >> +  @param [in] Trace              If TRUE, trace the ACPI fields.
> >> +  @param [in] Ptr                Pointer to the start of the buffer.
> >> +  @param [in] AcpiTableLength    Length of the ACPI table.
> >> +  @param [in] AcpiTableRevision  Revision of the ACPI table.
> >> +*/
> >> +VOID
> >> +EFIAPI
> >> +ParseAcpiXsdt (
> >> +  IN BOOLEAN Trace,
> >> +  IN UINT8*  Ptr,
> >> +  IN UINT32  AcpiTableLength,
> >> +  IN UINT8   AcpiTableRevision
> >> +  )
> >> +{
> >> +  UINT32        Offset;
> >> +  UINT32        TableOffset;
> >> +  UINT64*       TablePointer;
> >> +  UINTN         EntryIndex;
> >> +  CHAR16        Buffer[32];
> >> +
> >> +  // Parse the ACPI header to get the length
> >> +  ParseAcpi (
> >> +    FALSE,
> >> +    0,
> >> +    "XSDT",
> >> +    Ptr,
> >> +    ACPI_DESCRIPTION_HEADER_LENGTH,
> >> +    PARSER_PARAMS (XsdtParser)
> >> +    );
> >> +
> >> +  Offset = ParseAcpi (
> >> +             Trace,
> >> +             0,
> >> +             "XSDT",
> >> +             Ptr,
> >> +             *AcpiHdrInfo.Length,
> >> +             PARSER_PARAMS (XsdtParser)
> >> +             );
> >> +
> >> +  TableOffset = Offset;
> >> +
> >> +  if (Trace) {
> >> +    EntryIndex = 0;
> >> +    TablePointer = (UINT64*)(Ptr + TableOffset);
> >> +    while (Offset < (*AcpiHdrInfo.Length)) {
> >> +      CONST UINT32* Signature;
> >> +      CONST UINT32* Length;
> >> +      CONST UINT8*  Revision;
> >> +
> >> +      if ((UINT64*)(UINTN)(*TablePointer) != NULL) {
> >> +        UINT8*      Ptr;
> >> +
> >> +        ParseAcpiHeader (
> >> +          (UINT8*)(UINTN)(*TablePointer),
> >> +          &Signature,
> >> +          &Length,
> >> +          &Revision
> >> +          );
> >> +
> >> +        Ptr = (UINT8*)Signature;
> >> +
> >> +        UnicodeSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          L"Entry[%d] - %c%c%c%c",
> >> +          EntryIndex++,
> >> +          Ptr[0],
> >> +          Ptr[1],
> >> +          Ptr[2],
> >> +          Ptr[3]
> >> +          );
> >> +      } else {
> >> +        UnicodeSPrint (
> >> +          Buffer,
> >> +          sizeof (Buffer),
> >> +          L"Entry[%d]",
> >> +          EntryIndex++
> >> +          );
> >> +      }
> >> +
> >> +      PrintFieldName (2, Buffer);
> >> +      Print (L"0x%lx\n", *TablePointer);
> >> +
> >> +      // Validate the table pointers are not NULL
> >> +      if ((UINT64*)(UINTN)(*TablePointer) == NULL) {
> >> +        IncrementErrorCount ();
> >> +        Print (
> >> +          L"ERROR: Invalid table entry at 0x%lx, table address is 0x%lx\n",
> >> +          TablePointer,
> >> +          *TablePointer
> >> +          );
> >> +      }
> >> +      Offset += sizeof (UINT64);
> >> +      TablePointer++;
> >> +    } // while
> >> +  }
> >> +
> >> +  // Process the tables
> >> +  Offset = TableOffset;
> >> +  TablePointer = (UINT64*)(Ptr + TableOffset);
> >> +  while (Offset < (*AcpiHdrInfo.Length)) {
> >> +    if ((UINT64*)(UINTN)(*TablePointer) != NULL) {
> >> +      ProcessAcpiTable ((UINT8*)(UINTN)(*TablePointer));
> >> +    }
> >> +    Offset += sizeof (UINT64);
> >> +    TablePointer++;
> >> +  } // while
> >> +}
> >> +
> >> +/** Register the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is registered.
> >> +  @retval EFI_ALREADY_STARTED   The parser for the ACPI Table
> >> +                                was already registered.
> >> +  @retval EFI_INVALID_PARAMETER A parameter is invalid
> >> +  @retval EFI_OUT_OF_RESOURCES  No space to register the
> >> +                                parser.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +XsdtParserLibConstructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return RegisterParser (
> >> +
> EFI_ACPI_6_2_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE,
> >> +           ParseAcpiXsdt
> >> +           );
> >> +}
> >> +
> >> +/** Deregister the parser.
> >> +
> >> +  @param [in]  ImageHandle  The handle to the image.
> >> +  @param [in]  SystemTable  Pointer to the System Table.
> >> +
> >> +  @retval EFI_SUCCESS           The parser is deregistered.
> >> +  @retval EFI_NOT_FOUND         The parser was not registered.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +XsdtParserLibDestructor (
> >> +  IN CONST EFI_HANDLE                ImageHandle,
> >> +  IN       EFI_SYSTEM_TABLE  * CONST SystemTable
> >> +  )
> >> +{
> >> +  return DeregisterParser (
> >> +
> EFI_ACPI_6_2_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE
> >> +           );
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParserLib.i
> nf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParserLib.i
> nf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..2b9a0583640563755201c
> 089aa20703a8b2c7f04
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParserLib.i
> nf
> >> @@ -0,0 +1,33 @@
> >> +## @file
> >> +#
> >> +#  Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution.  The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION    = 0x00010019
> >> +  BASE_NAME      = XsdtParserLib
> >> +  FILE_GUID      = A57ED7A2-4CD6-4239-9A4D-F7F0DBDCFCFA
> >> +  VERSION_STRING = 1.0
> >> +  MODULE_TYPE    = DXE_DRIVER
> >> +  LIBRARY_CLASS  = NULL|DXE_DRIVER
> >> +  CONSTRUCTOR    = XsdtParserLibConstructor
> >> +  DESTRUCTOR     = XsdtParserLibDestructor
> >> +
> >> +[Sources]
> >> +  XsdtParser.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  ShellAcpiViewCommandLib
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.c
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.c
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..e880310e8fce3471ec50b
> 85d6fab995aa1c97ae5
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.c
> >> @@ -0,0 +1,106 @@
> >> +/**
> >> +  Main file for 'acpiview' Shell command function.
> >> +
> >> +  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#include <Guid/ShellLibHiiGuid.h>
> >> +#include <Library/HiiLib.h>
> >> +#include <Library/ShellCommandLib.h>
> >> +#include <Library/UefiLib.h>
> >> +#include <Library/UefiBootServicesTableLib.h>
> >> +#include <Uefi.h>
> >> +#include "AcpiView.h"
> >> +#include "UefiShellAcpiViewCommandLib.h"
> >> +
> >> +CONST CHAR16 gShellAcpiViewFileName[] = L"ShellCommand";
> >> +
> >> +/**
> >> +  Return the file name of the help text file if not using HII.
> >> +
> >> +  @return The string pointer to the file name.
> >> +*/
> >> +CONST CHAR16*
> >> +EFIAPI
> >> +ShellCommandGetManFileNameAcpiView (
> >> +  VOID
> >> +  )
> >> +{
> >> +  return gShellAcpiViewFileName;
> >> +}
> >> +
> >> +/**
> >> +  Constructor for the Shell AcpiView Command library.
> >> +
> >> +  Install the handlers for acpiview UEFI Shell command.
> >> +
> >> +  @param ImageHandle            The image handle of the process.
> >> +  @param SystemTable            The EFI System Table pointer.
> >> +
> >> +  @retval EFI_SUCCESS           The Shell command handlers were
> installed
> >> +                                successfully.
> >> +  @retval EFI_DEVICE_ERROR      Hii package failed to install.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +ShellAcpiViewCommandLibConstructor (
> >> +  IN EFI_HANDLE        ImageHandle,
> >> +  IN EFI_SYSTEM_TABLE  *SystemTable
> >> +  )
> >> +{
> >> +  gShellAcpiViewHiiHandle = NULL;
> >> +
> >> +  // Check Shell Profile Debug1 bit of the profiles mask
> >> +  if ((FixedPcdGet8 (PcdShellProfileMask) & BIT1) == 0) {
> >> +    return EFI_SUCCESS;
> >> +  }
> >> +
> >> +  gShellAcpiViewHiiHandle = HiiAddPackages (
> >> +                              &gShellAcpiViewHiiGuid,
> >> +                              gImageHandle,
> >> +                              UefiShellAcpiViewCommandLibStrings,
> >> +                              NULL
> >> +                              );
> >> +  if (gShellAcpiViewHiiHandle == NULL) {
> >> +    return EFI_DEVICE_ERROR;
> >> +  }
> >> +  // Install our Shell command handler
> >> +  ShellCommandRegisterCommandName (
> >> +    L"acpiview",
> >> +    ShellCommandRunAcpiView,
> >> +    ShellCommandGetManFileNameAcpiView,
> >> +    0,
> >> +    L"acpiview",
> >> +    TRUE,
> >> +    gShellAcpiViewHiiHandle,
> >> +    STRING_TOKEN (STR_GET_HELP_ACPIVIEW)
> >> +    );
> >> +
> >> +  return EFI_SUCCESS;
> >> +}
> >> +
> >> +/**
> >> +  Destructor for the library. free any resources.
> >> +
> >> +  @param ImageHandle            The image handle of the process.
> >> +  @param SystemTable            The EFI System Table pointer.
> >> +*/
> >> +EFI_STATUS
> >> +EFIAPI
> >> +ShellAcpiViewCommandLibDestructor (
> >> +  IN EFI_HANDLE        ImageHandle,
> >> +  IN EFI_SYSTEM_TABLE  *SystemTable
> >> +  )
> >> +{
> >> +  if (gShellAcpiViewHiiHandle != NULL) {
> >> +    HiiRemovePackages (gShellAcpiViewHiiHandle);
> >> +  }
> >> +  return EFI_SUCCESS;
> >> +}
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.h
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.h
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..59c8e21544d6829ac8729
> 58f6b84358e1f91b02f
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.h
> >> @@ -0,0 +1,32 @@
> >> +/**
> >> +  Header file for 'acpiview' Shell command functions.
> >> +
> >> +  Copyright (c) 2016 - 2017, ARM Limited. All rights reserved.<BR>
> >> +  This program and the accompanying materials
> >> +  are licensed and made available under the terms and conditions of the
> BSD License
> >> +  which accompanies this distribution.  The full text of the license may be
> found at
> >> +  http://opensource.org/licenses/bsd-license.php
> >> +
> >> +  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +**/
> >> +
> >> +#ifndef UEFI_SHELL_ACPIVIEW_COMMAND_LIB_H_
> >> +#define UEFI_SHELL_ACPIVIEW_COMMAND_LIB_H_
> >> +
> >> +extern EFI_HII_HANDLE gShellAcpiViewHiiHandle;
> >> +
> >> +/**
> >> +  Function for 'acpiview' command.
> >> +
> >> +  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
> >> +  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
> >> +*/
> >> +SHELL_STATUS
> >> +EFIAPI
> >> +ShellCommandRunAcpiView (
> >> +  IN EFI_HANDLE        ImageHandle,
> >> +  IN EFI_SYSTEM_TABLE  *SystemTable
> >> +  );
> >> +
> >> +#endif // UEFI_SHELL_ACPIVIEW_COMMAND_LIB_H_
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.inf
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.inf
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..553b2898e1ae6ddbc8c7c
> 0a29312e602ab0543a3
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.inf
> >> @@ -0,0 +1,60 @@
> >> +##  @file
> >> +# Provides Shell 'acpiview' command functions
> >> +#
> >> +# Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
> >> +#
> >> +#  This program and the accompanying materials
> >> +#  are licensed and made available under the terms and conditions of the
> BSD License
> >> +#  which accompanies this distribution. The full text of the license may be
> found at
> >> +#  http://opensource.org/licenses/bsd-license.php
> >> +#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +#
> >> +#
> >> +##
> >> +
> >> +[Defines]
> >> +  INF_VERSION                    = 0x00010006
> >> +  BASE_NAME                      = UefiShellAcpiViewCommandLib
> >> +  FILE_GUID                      =
> FB5B305E-84F5-461F-940D-82D345757AFA
> >> +  MODULE_TYPE                    = UEFI_DRIVER
> >> +  VERSION_STRING                 = 1.0
> >> +  LIBRARY_CLASS                  =
> ShellAcpiViewCommandLib|UEFI_APPLICATION UEFI_DRIVER
> DXE_RUNTIME_DRIVER
> >> +  CONSTRUCTOR                    =
> ShellAcpiViewCommandLibConstructor
> >> +  DESTRUCTOR                     =
> ShellAcpiViewCommandLibDestructor
> >> +
> >> +[Sources.common]
> >> +  UefiShellAcpiViewCommandLib.uni
> >> +  UefiShellAcpiViewCommandLib.c
> >> +  UefiShellAcpiViewCommandLib.h
> >> +  AcpiParser.c
> >> +  AcpiTableParser.c
> >> +  AcpiView.c
> >> +
> >> +[Packages]
> >> +  MdePkg/MdePkg.dec
> >> +  ShellPkg/ShellPkg.dec
> >> +  MdeModulePkg/MdeModulePkg.dec
> >> +
> >> +[LibraryClasses]
> >> +  MemoryAllocationLib
> >> +  BaseLib
> >> +  BaseMemoryLib
> >> +  DebugLib
> >> +  ShellCommandLib
> >> +  ShellLib
> >> +  UefiLib
> >> +  UefiRuntimeServicesTableLib
> >> +  UefiBootServicesTableLib
> >> +  PcdLib
> >> +  HiiLib
> >> +  PrintLib
> >> +  FileHandleLib
> >> +
> >> +
> >> +[FixedPcd]
> >> +  gEfiShellPkgTokenSpaceGuid.PcdShellProfileMask ## CONSUMES
> >> +
> >> +[Guids]
> >> +  gShellAcpiViewHiiGuid           ## CONSUMES ## HII
> >> +  gEfiAcpiTableGuid               ## SOMETIMES_CONSUMES ##
> SystemTable
> >> diff --git
> a/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.uni
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.uni
> >> new file mode 100644
> >> index
> 0000000000000000000000000000000000000000..1c4d66e1ff507054d4aa42
> bd47bfae8824c218e6
> >> --- /dev/null
> >> +++
> b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommand
> Lib.uni
> >> @@ -0,0 +1,127 @@
> >> +// /**
> >> +//
> >> +// Copyright (c) 2016 - 2017, ARM Limited. All rights reserved.<BR>
> >> +// This program and the accompanying materials
> >> +// are licensed and made available under the terms and conditions of the
> BSD License
> >> +// which accompanies this distribution. The full text of the license may be
> found at
> >> +// http://opensource.org/licenses/bsd-license.php
> >> +//
> >> +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
> BASIS,
> >> +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
> EXPRESS OR IMPLIED.
> >> +//
> >> +// Module Name:
> >> +//
> >> +// UefiShellAcpiViewCommandLib.uni
> >> +//
> >> +// Abstract:
> >> +//
> >> +// String definitions for UEFI Shell acpiview command
> >> +//
> >> +//
> >> +// */
> >> +
> >> +/=#
> >> +
> >> +#langdef   en-US "english"
> >> +
> >> +#string STR_GEN_PROBLEM           #language en-US "%H%s%N:
> Unknown flag - '%H%s%N'\r\n"
> >> +#string STR_GEN_NO_VALUE          #language en-US "%H%s%N:
> Missing argument for flag - '%H%s%N'\r\n"
> >> +#string STR_GEN_TOO_MANY          #language en-US "%H%s%N: Too
> many arguments.\r\n"
> >> +#string STR_GEN_MISSING_OPTION    #language en-US "%H%s%N:
> Missing option '%H%s%N' required by flag - '%H%s%N'\r\n"
> >> +#string STR_GEN_READONLY_MEDIA    #language en-US "%H%s%N:
> Unable to write to the current directory, check if media is writable.\r\n"
> >> +
> >> +#string STR_GET_HELP_ACPIVIEW   #language en-US ""
> >> +".TH acpiview 0 "Display ACPI information."\r\n"
> >> +".SH NAME\r\n"
> >> +"Display ACPI Table information.\r\n"
> >> +".SH SYNOPSIS\r\n"
> >> +" \r\n"
> >> +"ACPIVIEW [[-?] | [[-l] | [-s AcpiTable [-d]]] [-c] [-v] [-h Highlight]]\r\n"
> >> +" \r\n"
> >> +".SH OPTIONS\r\n"
> >> +" \r\n"
> >> +"  -l - Display list of installed ACPI Tables.\r\n"
> >> +"  -s - Display only the specified AcpiTable type.\r\n"
> >> +"         AcpiTable    : The required ACPI Table type.\r\n"
> >> +"  -d - Generate a binary file dump of the specified AcpiTable.\r\n"
> >> +"  -c - Consistency checking (enabled by default).\r\n"
> >> +"  -v - Display verbose data (enabled by default).\r\n"
> >> +"  -h - Enable/Disable Colour Highlighting.\r\n"
> >> +"         Highlight    : TRUE/ON enables highlighting;\r\n"
> >> +"                        FALSE/OFF (default) disables highlighting.\r\n"
> >> +"  -? - Show help.\r\n"
> >> +" \r\n"
> >> +".SH DESCRIPTION\r\n"
> >> +" \r\n"
> >> +"  This program is provided to allow examination of ACPI table values from
> the\r\n"
> >> +"  UEFI Shell.  This can help with investigations, especially at that stage
> where\r\n"
> >> +"  the tables are not enabling an OS to boot.\r\n"
> >> +"  The program is not exhaustive, and only encapsulates detailed
> knowledge of a\r\n"
> >> +"  limited number of table types.\r\n"
> >> +" \r\n"
> >> +"  Default behaviour is to display the content of all tables installed.\r\n"
> >> +"  'Known' table types (listed in NOTES below) will be parsed and
> displayed\r\n"
> >> +"  with descriptions and field values.  Where appropriate a degree of
> consistency\r\n"
> >> +"  checking is done and errors may be reported in the output.\r\n"
> >> +"  Other table types will be displayed as an array of Hexadecimal
> bytes.\r\n"
> >> +" \r\n"
> >> +"  To facilitate debugging, the -s and -d options can be used to generate
> a\r\n"
> >> +"  binary file image of a table that can be copied elsewhere for
> investigation\r\n"
> >> +"  using tools such as those provided by acpica.org.  This is especially
> relevant\r\n"
> >> +"  for AML type tables like DSDT and SSDT.\r\n"
> >> +" \r\n"
> >> +"NOTES:\r\n"
> >> +"  1. The AcpiTable parameter can match any installed table type.\r\n"
> >> +"     Tables without specific handling will be displayed as a raw hex dump
> (or\r\n"
> >> +"     dumped to a file if -d is used).\r\n"
> >> +"  2. Formatted display and checking is provided for these signature
> types:\r\n"
> >> +"       APIC  - Multiple APIC Description Table (MADT)\r\n"
> >> +"       BGRT  - Boot Graphics Resource Table\r\n"
> >> +"       DBG2  - Debug Port Table 2\r\n"
> >> +"       FACP  - Fixed ACPI Description Table (FADT)\r\n"
> >> +"       GTDT  - Generic Timer Description Table\r\n"
> >> +"       IORT  - IO Remapping Table\r\n"
> >> +"       MCFG  - Memory Mapped Config Space Base Address Description
> Table\r\n"
> >> +"       RSDP  - Root System Description Pointer\r\n"
> >> +"       SLIT  - System Locality Information Table\r\n"
> >> +"       SPCR  - Serial Port Console Redirection Table\r\n"
> >> +"       SRAT  - System Resource Affinity Table\r\n"
> >> +"       XSDT  - Extended System Description Table\r\n"
> >> +" \r\n"
> >> +".SH STANDARDS\r\n"
> >> +" \r\n"
> >> +"  Table details correspond to those in 'Advanced Configuration and
> Power\r\n"
> >> +"  Interface Specification' Version 6.2 Errata A, [September 2017]\r\n"
> >> +"
> (http://www.uefi.org/sites/default/files/resources/ACPI%206_2_A_Sept29.pdf)
> \r\n"
> >> +" \r\n"
> >> +"  NOTE: The nature of the ACPI standard means that almost all tables in 6.1
> will\r\n"
> >> +"        be 'backwards compatible' with prior version of the specification
> in\r\n"
> >> +"        terms of structure, so formatted output should be correct.  The
> main\r\n"
> >> +"        exception will be that previously 'reserved' fields will be
> reported\r\n"
> >> +"        with new names, where they have been added in later versions of
> the\r\n"
> >> +"        specification.\r\n"
> >> +" \r\n"
> >> +".SH EXAMPLES\r\n"
> >> +" \r\n"
> >> +" \r\n"
> >> +"EXAMPLES:\r\n"
> >> +"  * To display a list of the installed table types:\r\n"
> >> +"    fs0:\> acpiview -l\r\n"
> >> +" \r\n"
> >> +"  * To parse and display a specific table type:\r\n"
> >> +"    fs0:\> acpiview -s GTDT\r\n"
> >> +" \r\n"
> >> +"  * To save a binary dump of the contents of a table to a file\r\n"
> >> +"    in the current working directory:\r\n"
> >> +"    fs0:\> acpiview -s DSDT -d\r\n"
> >> +" \r\n"
> >> +"  * To display contents of all ACPI tables:\r\n"
> >> +"    fs0:\> acpiview\r\n"
> >> +" \r\n"
> >> +".SH RETURNVALUES\r\n"
> >> +" \r\n"
> >> +"RETURN VALUES:\r\n"
> >> +"  SHELL_SUCCESS             Data was displayed as requested.\r\n"
> >> +"  SHELL_INVALID_PARAMETER   ACPI Table parsing failed.\r\n"
> >> +" \r\n"
> >> +
> >> diff --git a/ShellPkg/ShellPkg.dec b/ShellPkg/ShellPkg.dec
> >> index
> 0c4f74ff41726c4a28ed082849c1b864b1c48752..c090aa4d08be3aad4d9aedb
> 542c01056bce46969 100644
> >> --- a/ShellPkg/ShellPkg.dec
> >> +++ b/ShellPkg/ShellPkg.dec
> >> @@ -3,6 +3,7 @@
> >>    #
> >>    # (C) Copyright 2013-2014 Hewlett-Packard Development Company,
> L.P.<BR>
> >>    # Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
> >> +# Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
> >>    #
> >>    # This program and the accompanying materials are licensed and made
> available under
> >>    # the terms and conditions of the BSD License which accompanies this
> distribution.
> >> @@ -56,7 +57,7 @@ [Guids]
> >>      gShellNetwork2HiiGuid           = {0x174b2b5, 0xf505, 0x4b12,
> {0xaa, 0x60, 0x59, 0xdf, 0xf8, 0xd6, 0xea, 0x37}}
> >>      gShellTftpHiiGuid               = {0x738a9314, 0x82c1, 0x4592,
> {0x8f, 0xf7, 0xc1, 0xbd, 0xf1, 0xb2, 0x0e, 0xd4}}
> >>      gShellBcfgHiiGuid               = {0x5f5f605d, 0x1583, 0x4a2d,
> {0xa6, 0xb2, 0xeb, 0x12, 0xda, 0xb4, 0xa2, 0xb6}}
> >> -
> >> +  gShellAcpiViewHiiGuid           = {0xda8ccdf4, 0xed8f, 0x4ffc, {0xb5,
> 0xef, 0x2e, 0xf5, 0x5e, 0x24, 0x93, 0x2a}}
> >>      # FILE_GUID as defined in ShellPkg/Application/Shell/Shell.inf
> >>      gUefiShellFileGuid              = {0x7c04a583, 0x9e3e, 0x4f1c,
> {0xad, 0x65, 0xe0, 0x52, 0x68, 0xd0, 0xb4, 0xd1}}
> >>
> >>
> >
> >
> 
> 
> --
> Thanks,
> Ray

  reply	other threads:[~2018-03-07  4:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-23 16:44 [PATCH v4] ShellPkg: Add acpiview tool to dump ACPI tables Sami Mujawar
2018-02-24  2:15 ` Ni, Ruiyu
2018-02-26 19:16   ` Sami Mujawar
2018-03-06 16:08     ` Sami Mujawar
2018-03-07  3:23     ` Ni, Ruiyu
2018-03-07  4:23       ` Yao, Jiewen [this message]
2018-03-07 12:34         ` Sami Mujawar
2018-03-07 17:23           ` Carsey, Jaben
2018-03-08  3:05             ` Ni, Ruiyu

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