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From: "Ni, Ruiyu" <ruiyu.ni@Intel.com>
To: Sami Mujawar <sami.mujawar@arm.com>, edk2-devel@lists.01.org
Cc: evan.lloyd@arm.com, leif.lindholm@linaro.org,
	Matteo.Carlini@arm.com, Stephanie.Hughes-Fitt@arm.com,
	nd@arm.com, jaben.carsey@intel.com, jiewen.yao@intel.com
Subject: Re: [PATCH v4] ShellPkg: Add acpiview tool to dump ACPI tables
Date: Sat, 24 Feb 2018 10:15:28 +0800	[thread overview]
Message-ID: <83c10b19-7965-419f-9e41-638986163044@Intel.com> (raw)
In-Reply-To: <20180223164457.44056-1-sami.mujawar@arm.com>

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.inf  |  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.inf  |  33 +
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParser.c       | 139 ++++
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Mcfg/McfgParserLib.inf  |  33 +
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParser.c       | 214 ++++++
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Rsdp/RsdpParserLib.inf  |  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/UefiShellAcpiViewCommandLib.c   | 106 +++
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.h   |  32 +
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.inf |  60 ++
>   ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.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..14d75eeb9282a76492433e460a180dcc4cd14c4e
> --- /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..a69d56da6cf728bb98df265de3ae030d85120494
> --- /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..89712066e632b43c5023acd9c8b5bec150e02d9f
> --- /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..5983ee21129b0c40e19d741fb61359a23ee622d0
> --- /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..586e05abb716b36d34a9c4e51568dc63fecb1085
> --- /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..03561ea81686821e37c05d90f053731fde63fbb5
> --- /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..c66e820ba788a0fb781061dbad1f57f90acef78c
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..0a4d40f00da1a20e48c84e4a3d25dd7a4db74761
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Bgrt/BgrtParserLib.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      = 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..94de9a365cc1f961d351ef22917d3009a3e9dc53
> --- /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/Dbg2ParserLib.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2ParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..e73c0df92cff870c8134c0148f88d24cdec6f0ba
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dbg2/Dbg2ParserLib.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..c76cc7e8777e75f3983ca310cb3c0d43fed03bf5
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..96bf238e1cb383c6233e728d297cd4292919eed3
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Dsdt/DsdtParserLib.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      = 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..bc13af40bd7f9c6f5502940252360d095dbd59d4
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..428a1a026deec1b87ccb93dd77750078e2a8eefd
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParserLib.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      = 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..784104a8a4e5c5ff0ba26374a67377e77ddfe39b
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..4b1e9d99f2353e7e696f6f0fc716d42b24bfeb9e
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParserLib.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      = 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..35b2571282c04257a010bf6c800acf7140d0283b
> --- /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.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..00edbd4fe778bd9b601e2caf3ac7fd3368d9945f
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Iort/IortParserLib.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      = 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..5a30c04195145c88d392ddca164a060639b7456a
> --- /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/MadtParserLib.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..0b2b6042bbfb510831e866aa1dc433467daac49e
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Madt/MadtParserLib.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..10bfec901a7c504e7022c21aafbac4c875d8886c
> --- /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_BASE_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_BASE_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..47d1d56a52896ec7d4021e8e23aef2afef256cb3
> --- /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..fec5508d222ef14e99c2d392a0033e6c6d5faa3e
> --- /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..c33b8efdb66f067862ae509d64578319fc63b9f8
> --- /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..f6a4c416aa259af16aa0b776dcc058604b5c17c2
> --- /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..96430ed9a98f1ccccde07522b4bf90d6d22cd792
> --- /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..24687a708bb828c53ceb7a61e9e11ce00b583cd5
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..94add31de030ab7771fc303eba7b922270265970
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Spcr/SpcrParserLib.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      = 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..bee51a7ee6a3553fc40d17671acd671f0be01e59
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..5823bab50df6497488e41faaa5ae7a813aee4792
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParserLib.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      = 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..4c56242b351c8c04d312349086e353c94e430f32
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..57e55eaf0824b6c8d05ce9b79d9598edd8f673d9
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Ssdt/SsdtParserLib.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      = 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..9b9f314b748d4281dcc56d707798e6eb1c2f7039
> --- /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.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParserLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..2b9a0583640563755201c089aa20703a8b2c7f04
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Xsdt/XsdtParserLib.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      = 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/UefiShellAcpiViewCommandLib.c b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..e880310e8fce3471ec50b85d6fab995aa1c97ae5
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.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/UefiShellAcpiViewCommandLib.h b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.h
> new file mode 100644
> index 0000000000000000000000000000000000000000..59c8e21544d6829ac872958f6b84358e1f91b02f
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.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/UefiShellAcpiViewCommandLib.inf b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.inf
> new file mode 100644
> index 0000000000000000000000000000000000000000..553b2898e1ae6ddbc8c7c0a29312e602ab0543a3
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.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/UefiShellAcpiViewCommandLib.uni b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.uni
> new file mode 100644
> index 0000000000000000000000000000000000000000..1c4d66e1ff507054d4aa42bd47bfae8824c218e6
> --- /dev/null
> +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/UefiShellAcpiViewCommandLib.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..c090aa4d08be3aad4d9aedb542c01056bce46969 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:[~2018-02-24  2:09 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 [this message]
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
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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