<?xml version="1.0" encoding="UTF-8"?>
<!--
Filename: DistributionPackage.xsd

Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
    targetNamespace="http://www.uefi.org/2012/1.0" xmlns="http://www.uefi.org/2012/1.0">
  <xs:element name="DistributionPackage">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        This schema defines the UEFI/PI Distribution Package description (PKG)
        file. It describes the content of:
      </xs:documentation>
      <xs:documentation xml:lang="en-us"> 1) Package descriptions with definitions and headers.</xs:documentation>
      <xs:documentation xml:lang="en-us">
        2) Modules in either source or binary format. (Note that Binary format
        is for FFS leaf section file types only, complete FFS files cannot be distributed using this
        distribution format.)
      </xs:documentation>
      <xs:documentation xml:lang="en-us">
        3) The distribution of custom tools used to modify the binary images to
        create UEFI/PI compliant images.
      </xs:documentation>
      <xs:documentation xml:lang="en-us">
        4) Finally, it can be used to distribute other miscellaneous content
        that is not specific to UEFI/PI images.
      </xs:documentation>
      <xs:documentation xml:lang="en-us">
        The Package Surface Area describes the content of packages, while the
        Module Surface Area provides information relevant to source and/or binary distributions.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="DistributionHeader" minOccurs="1" maxOccurs="1">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This header contains (legal) information usually required
              for distributing both binary and/or source code.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element ref="PackageSurfaceArea" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation xml:lang="en-us"> The list of packages in this distribution. </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Packages are groups of files and/or modules that are similar
              in nature.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Packages are uniquely identified by a package GUID and a
              package version.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              A package can declare public mappings of C names to GUID
              values.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              A package can provide header files for library classes
              and/or other industry standard definitions.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              A package can also declare public mappings of platform
              configuration database (PCD) &quot;knobs&quot; to control features and operation of modules
              within a platform.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Finally, a package lists the library instances and/or
              modules that are provided in a distribution package.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element ref="ModuleSurfaceArea" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The listing of UEFI/PI compliant modules in this
              distribution that are NOT part of a Package. Every module that is provided as part of a
              package needs to be described in a PackageSurfaceArea.Modules section.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              The ModuleSurfaceArea section describes how each module in a
              distribution is coded, or, in the case of a binary module distribution, how it was built.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              UEFI/PI compliant libraries and modules are uniquely
              identified by the Module's GUID and version number.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              This section will typically be used for modules that don't
              require any additional files that would be included in a package. For example, the Enhanced
              FAT driver binary does not need to have a package description, as no additional files are
              provided.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element ref="Tools" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is for distributing vendor specific executable
              tools, tool source code and/or configuration files. These tools are primarily for
              manipulating code and/or binary images.
            </xs:documentation>
            <xs:documentation xml:lang="en-us"> Tools in this section can:</xs:documentation>
            <xs:documentation xml:lang="en-us">
              1) Parse build meta-data files to create source code files
              and build scripts.
            </xs:documentation>
            <xs:documentation xml:lang="en-us"> 2) Modify image files to conform to UEFI/PI specifications. </xs:documentation>
            <xs:documentation xml:lang="en-us">
              3) Generate binary files from certain types of text/unicode
              files.
            </xs:documentation>
            <xs:documentation xml:lang="en-us"> 4) Generate PCI Option Roms or Firmware Device images. </xs:documentation>
            <xs:documentation xml:lang="en-us">
              5) Implement external encoding/decoding/signature/GUIDed
              tools.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              6) Distribution Package create/install/remove tools.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element ref="MiscellaneousFiles" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The list of miscellaneous files in this distribution. Any
              files that are not listed in either the Package, Module or Tools sections can be listed
              here. This section can be used to distribute specifications for packages and modules that
              are not &quot;industry standards&quot; such as a specification for a chipset or a video
              device.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element ref="UserExtensions" minOccurs="0" maxOccurs="unbounded">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The UserExtensions section is used to disseminate processing
              instructions that may be custom to the content provided by the distribution. This section
              contains information that is common to all aspects of this distribution.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:sequence>

    </xs:complexType>
  </xs:element>
  <!-- End of the DistributionPackage Description  -->

  <xs:element name="DistributionHeader">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        This section defines the content of the UEIF/PI compliant Distribution
        Package Header. This is the only required element of a UEFI/PI compliant distribution package.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="1" maxOccurs="1" name="Name">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This is the User Interface Name for this Distribution
              Package.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Each Distribution Package is uniquely identified by its
              GUID and Version number.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:normalizedString">
                <xs:attribute name="BaseName" type="xs:NMTOKEN" use="optional">
                  <xs:annotation>
                    <xs:documentation xml:lang="en-us">
                      The reference name of the Distribution
                      Package file. This single word name can be used by tools as a keyword or for
                      directory and/or file creation.
                    </xs:documentation>
                    <xs:documentation xml:lang="en-us">
                      White space and special characters (dash and
                      underscore characters may be used) are not permitted in this name.
                    </xs:documentation>
                  </xs:annotation>
                </xs:attribute>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="1" name="GUID">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This 128-bit GUID and the Version attribute uniquely
              identify this Distribution Package.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Backward compatible releases of a distribution package need
              only change the version number, while non-backward compatible changes require the GUID to
              change (resetting the version number to 1.0 is optional.)
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="RegistryFormatGuid">
                <xs:attribute name="Version" type="xs:decimal" use="required">
                  <xs:annotation>
                    <xs:documentation xml:lang="en-us">
                      This value, along with the GUID, is used to
                      uniquely identify this object. The higher the number, the more recent the
                      content.
                    </xs:documentation>
                  </xs:annotation>
                </xs:attribute>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="1" name="Vendor" type="xs:normalizedString">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A string identifying who created this distribution package.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="1" name="Date" type="xs:dateTime">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The date and time this distribution was created. The format
              is: YYYY-MM-DDThh:mm:ss, for example: 2001-01-31T13:30:00 (note the T character separator
              between the calendar date and the time.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="unbounded" name="Copyright">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The copyright for this file that is generated by the creator
              of the distribution. If a derivative work is generated from an existing distribution, then
              the existing copyright must be maintained, and additional copyrights may be appended to the
              end of this element. It may also be the primary copyright for all code provided in the
              Distribution Package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>

        </xs:element>
        <xs:element minOccurs="1" maxOccurs="unbounded" name="License">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A license that describes any restrictions on the use of this
              distribution. If a derivative work is allowed by the original license and a derivative work
              is generated from an existing distribution, then the existing license must be maintained,
              and additional licenses may be appended to the end of this element. It may also be the
              primary license for all code provided in the distribution file. Alternatively, this may
              point to a filename that contains the License. The file (included in the content zip file)
              will be stored in the same location as the distribution package's .pkg file.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="unbounded" name="Abstract">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A one line description of the Distribution Package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:normalizedString">
                <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="Description">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A complete description of the Distribution Package. This
              description may include the release name of the file, the version of the file, and a
              complete description of the file contents and/or features including a description of the
              updates since the previous file release.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:string">
                <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" maxOccurs="1" name="Signature" type="Md5Sum">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The packaging utilities will use this MD5 sum value of the
              included ZIP file containing files and/or code. If this element is not present, then
              installation tools should assume that the content is correct, or that other methods may be
              needed to verify content.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="1" name="XmlSpecification" type="xs:decimal" default="1.1">
          <xs:annotation>
            <xs:documentation xml:lang="en-us"> This version of this XML Schema is 1.1 </xs:documentation>
            <xs:documentation xml:lang="en-us"> Changes to 1.1 from 1.0 </xs:documentation>
            <xs:documentation xml:lang="en-us">
              #1 Updated to present date and new version which is
              important to reflect the present state of the matter
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              #2 Added definition/enumeration of UNDEFINED type 2 is
              important since there is a large body of legacy code for which the GUID’s and other
              code/data objects were not decorated with their usage. This document will allow for
              importing today’s source artifacts and producing decorations using the ‘Undefined’ versus
              having an error
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              #3 Allow for inclusion of ARM and future architecture
              types
            </xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:sequence>
      <xs:attribute name="ReadOnly" type="xs:boolean" default="false" use="optional">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            If set to true, all content within this Distribution Package
            should NOT be modified. The default permits modification of all content.
          </xs:documentation>
        </xs:annotation>
      </xs:attribute>
      <xs:attribute name="RePackage" type="xs:boolean" default="false" use="optional">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            If set to true, then the content can be repackaged into another
            distribution package. The default prohibits repackaging the Distribution content.
          </xs:documentation>
        </xs:annotation>
      </xs:attribute>
    </xs:complexType>
  </xs:element>
  <!-- End of the DistributionHeader element. -->

  <xs:element name="PackageSurfaceArea">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        A package is a collection of related objects - Includes, Libraries and
        Modules.
      </xs:documentation>
      <xs:documentation xml:lang="en-us">
        Each package is uniquely identified by its GUID and Version number.
        Backward compatible releases of a package need only change the version number, while non-backward
        compatible changes require the GUID to change (resetting the version number to 1.0 is optional.)
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>

        <xs:element minOccurs="1" maxOccurs="1" name="Header">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="1" name="Name">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is the User Interface Name for this
                    package.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:normalizedString">
                      <xs:attribute name="BaseName" type="xs:NMTOKEN" use="required">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            This is a single word BaseName
                            of the package. This BaseName can be used by tools as a keyword
                            and for directory/file creation.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This GUID and the Version attribute uniquely
                    identify a given package.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="RegistryFormatGuid">
                      <xs:attribute name="Version" type="xs:decimal" use="required">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            This value, along with the GUID,
                            is used to uniquely identify this object.
                          </xs:documentation>
                          <xs:documentation xml:lang="en-us">
                            Backward compatible changes must
                            make sure this number is incremented from the most recent
                            version. Non-backward compatible changes require a new GUID, and
                            the version can be reset.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Copyright">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    If the package requires a different copyright
                    than the distribution package, this element can list one or more copyright
                    lines.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>

              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="License">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    If the package requires licenses that are
                    different from the distribution package license, this element can contain one or
                    more license text paragraphs (or license filenames.)
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>

              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Abstract">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    A one line description of this package.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:normalizedString">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Description">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    A complete description of a package. This
                    description may include the release name of the package, the version of the
                    package, and a complete description of the package contents and/or features
                    including a description of the updates since the previous package’s release.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="1" maxOccurs="1" name="PackagePath" type="xs:anyURI">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This element is the location (in the ZIP file)
                    for the root directory of a package.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea Header element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="ClonedFrom">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              The term cloned is used here to indicate that this package
              as been copied and modified to a completely different package. An example might be for a new
              generation of chipsets that have few or no elements in common with the original.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This GUID and the Version attribute uniquely
                    identify the Package that this Package was copied from.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="RegistryFormatGuid">
                      <xs:attribute name="Version" type="xs:decimal" use="required">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            This value, along with the GUID,
                            is used to uniquely identify the package that this package was
                            cloned from.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea ClonedFrom element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="LibraryClassDeclarations">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              Library Classes are public interfaces that can be used by
              modules. One or more library instances can implement a library class, however only one
              library instance can be linked to an individual module. This provides the platform
              integrator with the flexibility of choosing one library instance's implementation over a
              different library instance.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="LibraryClass">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="HeaderFile" type="xs:anyURI">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          The header file provides definitions
                          and function prototypes for a library class. Modules can be coded
                          against these functions, using the definitions in this header,
                          without concerning themselves about the libraries' implementation
                          details. This is a PackagePath relative path and filename for the
                          include file.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element minOccurs="0" maxOccurs="1" name="RecommendedInstance">
                      <xs:complexType>
                        <xs:sequence>
                          <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                This GUID and the
                                Version attribute uniquely identify the Recommended Library
                                Instance.
                              </xs:documentation>
                            </xs:annotation>
                            <xs:complexType>
                              <xs:simpleContent>
                                <xs:extension base="RegistryFormatGuid">
                                  <xs:attribute name="Version" type="xs:decimal"
                                  use="optional">
                                    <xs:annotation>
                                      <xs:documentation xml:lang="en-us">
                                        This value, along with
                                        the GUID, is used to uniquely identify this object. If this
                                        value is not specified, then any version of the library
                                        instance is recommended.
                                      </xs:documentation>
                                    </xs:annotation>
                                  </xs:attribute>
                                </xs:extension>
                              </xs:simpleContent>
                            </xs:complexType>
                          </xs:element>
                        </xs:sequence>
                      </xs:complexType>
                    </xs:element>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Keyword" type="xs:NCName" use="required">
                    <xs:annotation>
                      <xs:documentation xml:lang="en-us">
                        The single word name of the Library
                        Class that module developers will use to identify a library class
                        dependency.
                      </xs:documentation>
                    </xs:annotation>
                  </xs:attribute>
                  <xs:attributeGroup ref="SupportedArchMod"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea LibraryClassDeclarations element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="IndustryStandardIncludes">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is used to list header files for industry
              standards not under the auspices of UEFI.org. For example, headers that contain definitions
              and data structures for the USB specifications.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="IndustryStandardHeader">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="HeaderFile" type="xs:anyURI">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          The package relative path and
                          filename (in the content zip file) of the industry standard include
                          file.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea IndustryStdIncludes element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="PackageIncludes">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              All top level header files that are included by a package
              that are not listed above. They cannot be:
            </xs:documentation>
            <xs:documentation xml:lang="en-us"> 1) Local to a module (module specific.) </xs:documentation>
            <xs:documentation xml:lang="en-us"> 2) An industry standard header. </xs:documentation>
            <xs:documentation xml:lang="en-us"> 3) A library class header. </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="PackageHeader">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="HeaderFile">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          This is the Package relative path
                          and filename location within the content ZIP file.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:complexType>
                        <xs:simpleContent>
                          <xs:extension base="xs:anyURI">
                            <xs:attributeGroup ref="SupportedArchMod"/>
                          </xs:extension>
                        </xs:simpleContent>
                      </xs:complexType>
                    </xs:element>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea PackageIncludes element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="Modules">
          <xs:complexType>
            <xs:sequence>
              <xs:element ref="ModuleSurfaceArea" minOccurs="1" maxOccurs="unbounded">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This section lists the Module Surface Area for
                    all modules provided with this package.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea Modules element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="GuidDeclarations">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section defines the mapping of GUID C names to GUID
              values as a Registry Format GUID.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Modules that use these GUIDs must specify their dependency
              on this package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Entry">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us"> Individual GUID Declarations </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="1" maxOccurs="1" name="GuidValue"
                        type="RegistryFormatGuid"/>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="UiName" type="xs:normalizedString" use="optional"/>
                  <xs:attribute name="GuidTypes" type="GuidListType" use="optional"/>
                  <xs:attributeGroup ref="SupportedArchMod"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea GuidDeclarations element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="ProtocolDeclarations">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section defines the mapping of Protocol C names to GUID
              values as a Registry Format GUID.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Modules that use these Protocols must specify their
              dependency on this package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Entry">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    Individual Protocol Declarations
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="1" maxOccurs="1" name="GuidValue"
                        type="RegistryFormatGuid"/>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="UiName" type="xs:normalizedString" use="optional"/>
                  <xs:attributeGroup ref="SupportedArchMod"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea ProtocolDeclarations element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="PpiDeclarations">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section defines the mapping of Ppi C names to GUID
              values as a Registry Format GUID.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Modules that use these Ppis must specify their dependency on
              this package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Entry">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us"> Individual PPI Declarations </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="1" maxOccurs="1" name="GuidValue"
                        type="RegistryFormatGuid"/>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="UiName" type="xs:normalizedString" use="optional"/>
                  <xs:attributeGroup ref="SupportedArchMod"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea PpiDeclarations element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="PcdDeclarations">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is used to declare platform configuration knobs
              that are defined by this package.
            </xs:documentation>
            <xs:documentation xml:lang="en-us">
              Modules that use these PCD values must specify their
              dependency on this package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="PcdEntry">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="TokenSpaceGuidCname"
                        type="xs:NCName">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          Specifies the C name of the Token
                          Space GUID of which this PCD Entry is a member. This C name should
                          also be listed in the GUIDs section, (specified above,) where the C
                          name is assigned to a GUID value.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element minOccurs="1" maxOccurs="1" name="Token">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          Specifies the 32-bit token value for
                          this PCD Entry. The Token number must be unique to the Token Space
                          that declares the PCD.
                        </xs:documentation>
                        <xs:documentation xml:lang="en-us">
                          The minLength of 3 is required to
                          handle the "0x" prefix to the hex number.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:simpleType>
                        <xs:restriction base="HexNumber">
                          <xs:minLength value="3"/>
                          <xs:maxLength value="10"/>
                        </xs:restriction>
                      </xs:simpleType>
                    </xs:element>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="1" maxOccurs="1" name="DatumType" type="PcdDatumTypes">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          A string that contains the data type
                          of this PCD Entry. PCD data types are restricted to the following
                          set:UINT8, UINT16, UINT32, UINT64, VOID*, BOOLEAN.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element minOccurs="1" maxOccurs="1" name="ValidUsage" type="PcdItemListType">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          A string that contains one or more
                          PCD Item types separated by spaces. The PCD Item types are
                          restricted to FeaturePcd, FixedPcd, PatchPcd, Pcd and/or PcdEx.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element minOccurs="1" maxOccurs="1" name="DefaultValue"
                        type="xs:normalizedString"/>
                    <xs:element minOccurs="0" maxOccurs="1" name="MaxDatumSize">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          This is a recommended maximum data
                          size for VOID* data types, the actual value should be defined by the
                          Platform Integrator. It is not required for the other data types.
                        </xs:documentation>
                        <xs:documentation xml:lang="en-us">
                          The minLength of 3 is required to
                          handle the "0x" prefix to the hex number.
                        </xs:documentation>

                      </xs:annotation>
                      <xs:simpleType>
                        <xs:restriction base="HexNumber">
                          <xs:minLength value="3"/>
                        </xs:restriction>
                      </xs:simpleType>
                    </xs:element>
                    <xs:element minOccurs="0" maxOccurs="unbounded" name="Prompt">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-US">
                          This entry contains prompt
                          information, that may used by tools to assist platform integrators
                          with choosing the correct values
                        </xs:documentation>
                      </xs:annotation>
                      <xs:complexType>
                        <xs:simpleContent>
                          <xs:extension base="xs:string">
                            <xs:attribute name="Lang" type="xs:language" default="en-us"
                                use="optional"/>
                          </xs:extension>
                        </xs:simpleContent>
                      </xs:complexType>
                    </xs:element>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>

                    <xs:element minOccurs="0" maxOccurs="unbounded" name="PcdError">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          Valid Error messages that may be
                          implemented in a module for the PCD Entry. Only One Error Number per
                          PcdError, (multiple ErrorMessage entries are permitted) and multiple
                          PcdError elements are permitted.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:complexType>
                        <xs:sequence>
                          <xs:choice minOccurs="1" maxOccurs="1">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                One of the following
                                types of comparisons, which must be able to evaluate to
                                either true or false.
                              </xs:documentation>
                            </xs:annotation>
                            <xs:element minOccurs="0" maxOccurs="1" name="ValidValueList">
                              <xs:annotation>
                                <xs:documentation xml:lang="en-us">
                                  The PCD Value must be
                                  space separated list of values. Values are restricted to the
                                  data type of this PCD.
                                </xs:documentation>
                              </xs:annotation>
                              <xs:complexType>
                                <xs:simpleContent>
                                  <xs:extension base="xs:normalizedString">
                                    <xs:attribute name="Lang" type="xs:language" use="optional"
                                                            />
                                  </xs:extension>
                                </xs:simpleContent>
                              </xs:complexType>
                            </xs:element>
                            <xs:element minOccurs="0" maxOccurs="1" name="ValidValueRange"
                                type="xs:normalizedString">
                              <xs:annotation>
                                <xs:documentation xml:lang="en-us">
                                  The PCD must be within a
                                  specified range of numeric values. Restricted to C style
                                  Relational, Equality and Logical Operators and parenthesis
                                  are valid. Only the CName for this PCD is permitted in the
                                  ValidValueRange expression. All other values must be
                                  numeric.
                                </xs:documentation>
                                <xs:documentation xml:lang="en-us">
                                  LValue (op RValue)+
                                </xs:documentation>
                              </xs:annotation>
                            </xs:element>
                            <xs:element minOccurs="0" maxOccurs="1" name="Expression"
                                type="xs:normalizedString">
                              <xs:annotation>
                                <xs:documentation xml:lang="en-us">
                                  A in-fix logical
                                  expression using C style logical operators.
                                </xs:documentation>
                              </xs:annotation>
                            </xs:element>
                          </xs:choice>
                          <xs:element minOccurs="1" maxOccurs="1" name="ErrorNumber">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                A hexadecimal value for
                                the error message as defined by specifications.
                              </xs:documentation>
                              <xs:documentation xml:lang="en-us">
                                The minLength of 3 is
                                required to handle the "0x" prefix to the hex number.
                              </xs:documentation>

                            </xs:annotation>
                            <xs:simpleType>
                              <xs:restriction base="HexNumber">
                                <xs:minLength value="3"/>
                              </xs:restriction>
                            </xs:simpleType>
                          </xs:element>
                          <xs:element minOccurs="1" maxOccurs="unbounded" name="ErrorMessage">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                This string should be
                                defined by specifications. There are pre-defined error
                                number ranges in the UEFI/PI specification.
                              </xs:documentation>
                            </xs:annotation>
                            <xs:complexType>
                              <xs:simpleContent>
                                <xs:extension base="xs:string">
                                  <xs:attribute name="Lang" type="xs:language" default="en-us"
                                  use="optional"/>
                                </xs:extension>
                              </xs:simpleContent>
                            </xs:complexType>
                          </xs:element>
                        </xs:sequence>
                      </xs:complexType>
                    </xs:element>
                  </xs:sequence>
                  <xs:attributeGroup ref="SupportedArchMod"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea PcdDeclarations element.  -->

        <xs:element minOccurs="0" maxOccurs="1" name="PcdRelationshipChecks">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is used to describe any PCD interdependencies
              or relationships.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="PcdCheck" type="xs:normalizedString">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This entry must used
                    TokenSpaceGuidCName.PcdCname for every named PCD. Restricted to Relational,
                    Equality and Logical Operators (NOT, AND, OR, GT, GE, EQ, LE, LT and XOR) and
                    parenthesis are valid. Only the TokenSpaceGuidCName.PcdCname us permitted to
                    name PCDs in the expression. All other values must be numeric.
                  </xs:documentation>
                  <xs:documentation xml:lang="en-us"> LValue (op RValue)+ </xs:documentation>
                </xs:annotation>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>

        <xs:element minOccurs="0" maxOccurs="unbounded" name="MiscellaneousFiles">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section contains files that are not part of the code
              distributed with this package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="0" maxOccurs="1" name="Copyright" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    Only required if different from the Package
                    Copyright.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="License" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    Only required if different from the Package
                    License.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="Abstract" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    A one line description of this section's
                    content.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Description" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    A complete description of the files in this
                    section.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Filename">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is the PackagePath relative path and
                    filename location within the ZIP file.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:anyURI">
                      <xs:attribute name="Executable" type="xs:boolean" default="false"
                          use="optional">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            If true, used by installation
                            tools to ensure that a file that must be executable has the
                            correct properties to permit execution.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>

            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea Misc element.  -->

        <xs:element minOccurs="0" maxOccurs="unbounded" name="UserExtensions">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is used for any processing instructions that
              may be custom to the content provided by this package that are common to this package.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType mixed="true">
            <xs:sequence>
              <xs:any processContents="lax" minOccurs="0" maxOccurs="1"/>
            </xs:sequence>
            <xs:attribute name="UserId" type="xs:NCName" use="required">
              <xs:annotation>
                <xs:documentation xml:lang="en-us">
                  This is a single word identifier for grouping
                  similar content that does not fit into previously defined sections or other sections
                  of the Distribution.
                </xs:documentation>
              </xs:annotation>
            </xs:attribute>
            <xs:attribute name="Identifier" type="xs:string" use="required">
              <xs:annotation>
                <xs:documentation xml:lang="en-us">
                  This can be used to differentiate multiple sections
                  with a grouping.
                </xs:documentation>
                <xs:documentation xml:lang="en-us">
                  For example, a PRE_PROCESS Identifier might indicate
                  specific steps and tools required before processing module content, while a
                  different UserExtensions section with a POST_PROCESS Identifier might describe steps
                  that need to be executed after operations on the modules in this package.
                </xs:documentation>
              </xs:annotation>
            </xs:attribute>
            <xs:anyAttribute processContents="lax"/>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageSurfaceArea UserExtensions element. -->

      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <!-- End of the PackageSurfaceArea element. -->

  <xs:element name="ModuleSurfaceArea">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        Each module is uniquely identified by its GUID and Version number.
        Backward compatible releases of a module need only change the version number, while non-backward
        compatible changes require the GUID to change (resetting the version number to 1.0 is optional.)
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>

        <xs:element minOccurs="1" maxOccurs="1" name="Header">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="1" name="Name">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is the User Interface Name for this Module.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:normalizedString">
                      <xs:attribute name="BaseName" type="xs:NMTOKEN" use="required">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            This is a single word BaseName
                            that will be used to create a module meta-data file.
                          </xs:documentation>
                          <xs:documentation xml:lang="en-us">
                            This name should also be used to
                            create output file names and directories.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This GUID and the Version attribute uniquely
                    identify a given Module.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="RegistryFormatGuid">
                      <xs:attribute name="Version" type="xs:decimal" use="required">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            This value, along with the GUID,
                            is used to uniquely identify this object.
                          </xs:documentation>
                          <xs:documentation xml:lang="en-us">
                            Backward compatible changes must
                            make sure this number is incremented from the most recent
                            version. Non-backward compatible changes require a new GUID, and
                            the version can be reset.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Copyright">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the Copyright is
                    different from either the Package or Distribution copyright. Multiple copyright
                    lines are permitted within this section.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="License">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the license is
                    different from either the Package or Distribution license. Multiple licenses are
                    permitted within this section.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Abstract">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    A brief text description of the module.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:normalizedString">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Description">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    A complete description of the module contents
                    and/or features including a description of the updates since the previous module
                    release.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of Module Surface Area Header Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="ModuleProperties">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              List general information about a module, including the
              Supported Architectures, this module's type, specifications the module is coded against, and
              other informational content.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="1" name="ModuleType" type="ModuleTypes">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    One of the Enumerated module types that limit
                    the use of a module.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="1" maxOccurs="1" name="Path" type="xs:anyURI">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    For stand-alone modules that are NOT part of any
                    package, this is the path to the root of the module as listed in the ZIP file.
                    For modules included in a package, this is the location, relative to the root of
                    the package (PackagePath) this module belongs to.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="PcdIsDriver">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This element is only required for the PEIM that
                    produces the PCD PPI or the DXE Driver that produces the PCD Protocol.
                  </xs:documentation>
                </xs:annotation>
                <xs:simpleType>
                  <xs:restriction base="xs:NCName">
                    <xs:enumeration value="PEI_PCD_DRIVER"/>
                    <xs:enumeration value="DXE_PCD_DRIVER"/>
                  </xs:restriction>
                </xs:simpleType>
              </xs:element>

              <xs:element minOccurs="0" maxOccurs="1" name="UefiSpecificationVersion" type="xs:decimal"/>

              <xs:element minOccurs="0" maxOccurs="1" name="PiSpecificationVersion" type="xs:decimal"/>

              <xs:element minOccurs="0" maxOccurs="unbounded" name="Specification">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is a list of other specifications that this
                    module is written against. These entries can be used in #define statements
                    (depending on the build system implementation, they may be autogenerated.)
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:NCName">
                      <xs:attribute name="Version" type="xs:decimal" use="required"/>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>

              <xs:element minOccurs="0" maxOccurs="unbounded" name="BootMode">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    Different firmware execution paths may be taken
                    based on a given state of the hardware, firmware, or through feature settings. A
                    BootMode may be declared (PRODUCES) or discovered (CONSUMES) based on these
                    states and feature settings. If the usage is UNDEFINE, it implies that a Boot
                    Mode is used, but the package creator does not know how it is used. The
                    supported boot modes map to the PI specification Boot Modes. The boot modes
                    listed with Recovery are to indicate that the BootMode is valid during a
                    recovery boot.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:sequence minOccurs="0">
                    <xs:element minOccurs="1" maxOccurs="1" name="SupportedBootModes">
                      <xs:simpleType>
                        <xs:list>
                          <xs:simpleType>
                            <xs:restriction base="xs:NCName">
                              <xs:enumeration value="FULL"/>
                              <xs:enumeration value="MINIMAL"/>
                              <xs:enumeration value="NO_CHANGE"/>
                              <xs:enumeration value="DIAGNOSTICS"/>
                              <xs:enumeration value="DEFAULT"/>
                              <xs:enumeration value="S2_RESUME"/>
                              <xs:enumeration value="S3_RESUME"/>
                              <xs:enumeration value="S4_RESUME"/>
                              <xs:enumeration value="S5_RESUME"/>
                              <xs:enumeration value="FLASH_UPDATE"/>
                              <xs:enumeration value="RECOVERY_FULL"/>
                              <xs:enumeration value="RECOVERY_MINIMAL"/>
                              <xs:enumeration value="RECOVERY_NO_CHANGE"/>
                              <xs:enumeration value="RECOVERY_DIAGNOSTICS"/>
                              <xs:enumeration value="RECOVERY_DEFAULT"/>
                              <xs:enumeration value="RECOVERY_S2_RESUME"/>
                              <xs:enumeration value="RECOVERY_S3_RESUME"/>
                              <xs:enumeration value="RECOVERY_S4_RESUME"/>
                              <xs:enumeration value="RECOVERY_S5_RESUME"/>
                              <xs:enumeration value="RECOVERY_FLASH_UPDATE"/>
                              <xs:enumeration value="UNDEFINED"/>
                            </xs:restriction>
                          </xs:simpleType>
                        </xs:list>
                      </xs:simpleType>
                    </xs:element>

                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module always supports
                              the given boot modes.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module may support a
                              given mode on some execution paths.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module will change the
                              boot mode.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIME_PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module will change the
                              boot mode on some execution paths.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="UNDEFINED">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The package creator does not
                              know how the boot mode is used.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>

              <xs:element minOccurs="0" maxOccurs="unbounded" name="Event" nillable="true">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    The functions that make up the Event, Timer, and
                    Task Priority Services are used during preboot to create, close, signal, and
                    wait for events; to set timers; and to raise and restore task priority levels as
                    defined in the UEFI specification. GUIDed events should be listed in the Guids
                    section.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:sequence>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module will register a
                              notification function and calls the function when it is
                              signaled.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module will register a
                              notification function and calls the function when it is
                              signaled on some execution paths.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module will signal all
                              events in an event group.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module will signal all
                              events in an event group under some execution paths.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="UNDEFINED">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The package creator does not
                              know how an event is used.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="EventType" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="EVENT_TYPE_PERIODIC_TIMER"/>
                        <xs:enumeration value="EVENT_TYPE_RELATIVE_TIMER"/>
                        <xs:enumeration value="UNDEFINED"/>
                      </xs:restriction>
                    </xs:simpleType>


                  </xs:attribute>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>

              <xs:element minOccurs="0" maxOccurs="unbounded" name="HOB" nillable="false">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is a list of non-GUIDed Hand Off Blocks
                    (HOBs) produced or consumed by this module.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:sequence>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="HobType" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="PHIT"/>
                        <xs:enumeration value="MEMORY_ALLOCATION"/>
                        <xs:enumeration value="RESOURCE_DESCRIPTOR"/>
                        <xs:enumeration value="FIRMWARE_VOLUME"/>
                        <xs:enumeration value="LOAD_PEIM"/>
                        <xs:enumeration value="UNDEFINED"/>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              A HOB must be present in the
                              system.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              If present, the HOB will be
                              used.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The HOB is always produced
                              by the module.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The HOB may be produced by
                              the module under some execution paths.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="UNDEFINED">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The package creator knows
                              that a HOB is used, but does not know how it is used.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>

            </xs:sequence>
            <xs:attributeGroup ref="SupportedArchMod"/>
          </xs:complexType>
        </xs:element>
        <!-- End of ModuleProperties Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="ClonedFrom">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section may be included for Modules that are copied
              from a different module.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This GUID and the Version attribute uniquely
                    identify the Module that this Module was copied from.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="RegistryFormatGuid">
                      <xs:attribute name="Version" type="xs:decimal" use="required">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            This value, along with the GUID,
                            is used to uniquely identify this object.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!--  End of ClonedFrom Section. -->

        <xs:element minOccurs="0" maxOccurs="1" name="LibraryClassDefinitions">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A list of the different Library Classes consumed by a
              driver, core and/or application module, or produced by a Library module.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="LibraryClass">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="Keyword" type="xs:NCName">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us ">
                          Used by tools to identify different
                          instances of libraries that provide the library class. This keyword
                          identifies the library class this module needs to be linked against.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element minOccurs="0" maxOccurs="1" name="RecommendedInstance">
                      <xs:complexType>
                        <xs:all>
                          <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                This GUID and the
                                Version attribute uniquely identify the recommended Library
                                Instance for this module .
                              </xs:documentation>
                            </xs:annotation>
                            <xs:complexType>
                              <xs:simpleContent>
                                <xs:extension base="RegistryFormatGuid">
                                  <xs:attribute name="Version" type="xs:decimal"
                                  use="optional">
                                    <xs:annotation>
                                      <xs:documentation xml:lang="en-us">
                                        This value, along with
                                        the GUID, is used to uniquely identify this object.
                                      </xs:documentation>
                                    </xs:annotation>
                                  </xs:attribute>
                                </xs:extension>
                              </xs:simpleContent>
                            </xs:complexType>
                          </xs:element>
                        </xs:all>
                      </xs:complexType>
                    </xs:element>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          Library instances can provide code
                          for a library class, or may require other library instances
                          themselves. Since different execution paths in a library (or module)
                          may need different library classes based on some setting, library
                          classes may not alway be required.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="PRODUCES"/>
                        <xs:enumeration value="CONSUMES"/>
                        <xs:enumeration value="SOMETIMES_CONSUMES"/>
                        <xs:enumeration value="UNDEFINED"/>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>

                  <xs:attributeGroup ref="SupportedArchMod"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional">
                    <xs:annotation>
                      <xs:documentation xml:lang="en-us">
                        A FeatureFlag attribute must evaluate to
                        either true or false - it may be a fixed value of true or false, a C
                        name or an in-fix expression.
                      </xs:documentation>
                    </xs:annotation>
                  </xs:attribute>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of LibraryClassDefinitions Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="SourceFiles">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Filename">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is the module relative
                    (ModuleProperties.Path) path and filename location within the ZIP file.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:anyURI">
                      <xs:attribute name="Family" type="FamilyTypes" use="optional">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            The Family attribute is used to
                            restrict usage to a given family of compilers, such as GCC or
                            MSFT. Since not all code processing tools use the same syntax,
                            especially for assembly, this field can be used to identify
                            different syntax.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                      <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                      <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                      <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of SourceFiles Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="BinaryFiles">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="BinaryFile">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="unbounded" name="Filename">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          This is the module relative
                          (ModuleProperties.Path) path and filename location within the ZIP
                          file.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:complexType>
                        <xs:simpleContent>
                          <xs:extension base="xs:anyURI">
                            <xs:attribute name="FileType" use="optional">
                              <xs:simpleType>
                                <xs:restriction base="xs:NCName">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      Binary file distribution
                                      is limited to UEFI/PI FFS leaf section file types.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:enumeration value="GUID"/>
                                  <xs:enumeration value="FREEFORM"/>
                                  <xs:enumeration value="UEFI_IMAGE"/>
                                  <xs:enumeration value="PE32">
                                    <xs:annotation>
                                      <xs:documentation xml:lang="en-us">
                                        A UEFI/PI FFS Leaf
                                        section file type, not a raw PE32 file.
                                      </xs:documentation>
                                    </xs:annotation>
                                  </xs:enumeration>
                                  <xs:enumeration value="PIC"/>
                                  <xs:enumeration value="PEI_DEPEX"/>
                                  <xs:enumeration value="DXE_DEPEX"/>
                                  <xs:enumeration value="SMM_DEPEX"/>
                                  <xs:enumeration value="COMPAT16"/>
                                  <xs:enumeration value="DISPOSABLE"/>
                                  <xs:enumeration value="TE"/>
                                  <xs:enumeration value="VER"/>
                                  <xs:enumeration value="UI"/>
                                  <xs:enumeration value="BIN"/>
                                  <xs:enumeration value="FV"/>
                                </xs:restriction>
                              </xs:simpleType>
                            </xs:attribute>
                            <xs:attribute name="GUID" use="optional"
                                type="RegistryFormatGuid"/>
                            <xs:attribute name="SupArchList" type="ArchListType"
                                use="optional"/>
                            <xs:attribute name="SupModList" type="ModuleListType"
                                use="optional"/>
                            <xs:attribute name="FeatureFlag" type="xs:normalizedString"
                                use="optional"/>
                          </xs:extension>
                        </xs:simpleContent>
                      </xs:complexType>
                    </xs:element>
                    <xs:element minOccurs="0" maxOccurs="unbounded" name="AsBuilt">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          This section contains information
                          about how the module was coded, such as Compiler Tools, Flags, PCDs
                          (only PatchPcd and/or PcdEx) and Library Class Instances used to
                          build the binary.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:complexType>
                        <xs:sequence>

                          <xs:element minOccurs="0" maxOccurs="unbounded" name="PatchPcdValue">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                The element is the
                                Patchable PCD Value that was used during the build.
                              </xs:documentation>
                            </xs:annotation>
                            <xs:complexType>
                              <xs:sequence>
                                <xs:element minOccurs="1" maxOccurs="1"
                                name="TokenSpaceGuidValue" type="RegistryFormatGuid"/>
                                <xs:element minOccurs="1" maxOccurs="1" name="PcdCName"
                                type="xs:NCName"/>
                                <xs:element minOccurs="1" maxOccurs="1" name="Token">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      The minLength of 3 is
                                      required to handle the "0x" prefix to the hex number.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:simpleType>
                                    <xs:restriction base="HexNumber">
                                      <xs:minLength value="3"/>
                                      <xs:maxLength value="10"/>
                                    </xs:restriction>
                                  </xs:simpleType>
                                </xs:element>
                                <xs:element minOccurs="1" maxOccurs="1" name="DatumType"
                                type="PcdDatumTypes"/>
                                <xs:element minOccurs="0" maxOccurs="1" name="MaxDatumSize">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      This field is required
                                      if the Pcd Datum Type is VOID*
                                    </xs:documentation>
                                    <xs:documentation xml:lang="en-us">
                                      The minLength of 3 is
                                      required to handle the "0x" prefix to the hex number.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:simpleType>
                                    <xs:restriction base="HexNumber">
                                      <xs:minLength value="3"/>
                                    </xs:restriction>
                                  </xs:simpleType>
                                </xs:element>
                                <xs:element minOccurs="1" maxOccurs="1" name="Value"
                                type="xs:normalizedString"/>
                                <xs:element minOccurs="1" maxOccurs="1" name="Offset">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      The minLength of 3 is
                                      required to handle the "0x" prefix to the hex number.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:simpleType>
                                    <xs:restriction base="HexNumber">
                                      <xs:minLength value="3"/>
                                    </xs:restriction>
                                  </xs:simpleType>
                                </xs:element>
                                <xs:element ref="HelpText" minOccurs="0"
                                maxOccurs="unbounded"/>
                                <xs:element minOccurs="0" maxOccurs="unbounded"
                                name="PcdError">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      Error information
                                      implemented by the module.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:complexType>
                                    <xs:sequence>
                                      <xs:choice>
                                        <xs:element minOccurs="0" maxOccurs="1" name="ValidValueList">
                                          <xs:complexType>
                                            <xs:simpleContent>
                                              <xs:extension base="xs:normalizedString">
                                                <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
                                              </xs:extension>
                                            </xs:simpleContent>
                                          </xs:complexType>
                                        </xs:element>
                                        <xs:element minOccurs="0" maxOccurs="1" name="ValidValueRange" type="xs:normalizedString"/>
                                        <xs:element minOccurs="0" maxOccurs="1" name="Expression" type="xs:normalizedString"/>
                                      </xs:choice>
                                      <xs:element minOccurs="1" maxOccurs="1" name="ErrorNumber">
                                        <xs:annotation>
                                          <xs:documentation xml:lang="en-us">
                                            The minLength of 3 is
                                            required to handle the "0x" prefix to the hex number.
                                          </xs:documentation>
                                        </xs:annotation>
                                        <xs:simpleType>
                                          <xs:restriction base="HexNumber">
                                            <xs:minLength value="3"/>
                                          </xs:restriction>
                                        </xs:simpleType>
                                      </xs:element>
                                      <xs:element minOccurs="0" maxOccurs="unbounded"
                                      name="ErrorMessage">
                                        <xs:complexType>
                                          <xs:simpleContent>
                                            <xs:extension base="xs:string">
                                              <xs:attribute name="Lang" type="xs:language" default="en-us"
                                              use="optional"/>
                                            </xs:extension>
                                          </xs:simpleContent>
                                        </xs:complexType>
                                      </xs:element>
                                    </xs:sequence>
                                  </xs:complexType>
                                </xs:element>
                              </xs:sequence>
                            </xs:complexType>
                          </xs:element>

                          <xs:element minOccurs="0" maxOccurs="unbounded" name="PcdExValue">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                The element is the
                                DynamicEx PCD Value that was used during the build.
                              </xs:documentation>
                            </xs:annotation>
                            <xs:complexType>
                              <xs:sequence>
                                <xs:element minOccurs="1" maxOccurs="1"
                                name="TokenSpaceGuidValue" type="RegistryFormatGuid"/>
                                <xs:element minOccurs="1" maxOccurs="1" name="Token">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      The minLength of 3 is
                                      required to handle the "0x" prefix to the hex number.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:simpleType>
                                    <xs:restriction base="HexNumber">
                                      <xs:minLength value="3"/>
                                      <xs:maxLength value="10"/>
                                    </xs:restriction>
                                  </xs:simpleType>
                                </xs:element>
                                <xs:element minOccurs="1" maxOccurs="1" name="DatumType"
                                type="PcdDatumTypes"/>
                                <xs:element minOccurs="0" maxOccurs="1" name="MaxDatumSize">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      This field is required
                                      if the Pcd Datum Type is VOID*
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:simpleType>
                                    <xs:restriction base="HexNumber">
                                      <xs:minLength value="3"/>
                                    </xs:restriction>
                                  </xs:simpleType>
                                </xs:element>
                                <xs:element minOccurs="1" maxOccurs="1" name="Value"
                                type="xs:normalizedString"/>
                                <xs:element ref="HelpText" minOccurs="0"
                                maxOccurs="unbounded"/>
                                <xs:element minOccurs="0" maxOccurs="unbounded"
                                name="PcdError">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      Error information
                                      implemented by the module.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:complexType>
                                    <xs:sequence>
                                      <xs:choice>
                                        <xs:element minOccurs="0" maxOccurs="1" name="ValidValueList">
                                          <xs:complexType>
                                            <xs:simpleContent>
                                              <xs:extension base="xs:normalizedString">
                                                <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
                                              </xs:extension>
                                            </xs:simpleContent>
                                          </xs:complexType>
                                        </xs:element>
                                        <xs:element minOccurs="0" maxOccurs="1" name="ValidValueRange" type="xs:normalizedString"/>
                                        <xs:element minOccurs="0" maxOccurs="1" name="Expression" type="xs:normalizedString"/>
                                      </xs:choice>
                                      <xs:element minOccurs="1" maxOccurs="1" name="ErrorNumber">
                                        <xs:annotation>
                                          <xs:documentation xml:lang="en-us">
                                            The minLength of 3 is
                                            required to handle the "0x" prefix to the hex number.
                                          </xs:documentation>
                                        </xs:annotation>
                                        <xs:simpleType>
                                          <xs:restriction base="HexNumber">
                                            <xs:minLength value="3"/>
                                          </xs:restriction>
                                        </xs:simpleType>
                                      </xs:element>
                                      <xs:element minOccurs="0" maxOccurs="unbounded"
                                      name="ErrorMessage">
                                        <xs:complexType>
                                          <xs:simpleContent>
                                            <xs:extension base="xs:string">
                                              <xs:attribute name="Lang" type="xs:language" default="en-us"
                                              use="optional"/>
                                            </xs:extension>
                                          </xs:simpleContent>
                                        </xs:complexType>
                                      </xs:element>
                                    </xs:sequence>
                                  </xs:complexType>
                                </xs:element>
                              </xs:sequence>
                            </xs:complexType>
                          </xs:element>

                          <xs:element minOccurs="0" maxOccurs="1" name="LibraryInstances">
                            <xs:annotation>
                              <xs:documentation xml:lang="en-us">
                                This is the actual
                                library instance that was used to link against the module.
                              </xs:documentation>
                            </xs:annotation>
                            <xs:complexType>
                              <xs:sequence>
                                <xs:element minOccurs="1" maxOccurs="unbounded" name="GUID">
                                  <xs:annotation>
                                    <xs:documentation xml:lang="en-us">
                                      This GUID and the
                                      Version attribute uniquely identify the actual Library
                                      Instance linked in this module.
                                    </xs:documentation>
                                  </xs:annotation>
                                  <xs:complexType>
                                    <xs:simpleContent>
                                      <xs:extension base="RegistryFormatGuid">
                                        <xs:attribute name="Version" type="xs:decimal"
                                        use="required">
                                          <xs:annotation>
                                            <xs:documentation xml:lang="en-us">
                                              This value, along with
                                              the GUID, is used to uniquely identify this object.
                                            </xs:documentation>
                                          </xs:annotation>
                                        </xs:attribute>
                                      </xs:extension>
                                    </xs:simpleContent>
                                  </xs:complexType>
                                </xs:element>
                              </xs:sequence>
                            </xs:complexType>
                          </xs:element>

                          <xs:element minOccurs="0" maxOccurs="unbounded" name="BuildFlags">
                            <xs:complexType mixed="true">
                              <xs:simpleContent>
                                <xs:annotation>
                                  <xs:documentation xml:lang="en-us">
                                    Any description of OS,
                                    Tool, and flags for the individual tool can go in this
                                    section.
                                  </xs:documentation>
                                </xs:annotation>
                                <xs:extension base="xs:string">
                                  <xs:anyAttribute processContents="lax"/>
                                </xs:extension>
                              </xs:simpleContent>
                            </xs:complexType>
                          </xs:element>
                        </xs:sequence>
                      </xs:complexType>
                    </xs:element>
                    <!-- End of AsBuilt -->
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                </xs:complexType>
              </xs:element>

            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of BinaryFiles Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="PackageDependencies">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Package">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="0" maxOccurs="unbounded" name="Description">
                      <xs:complexType>
                        <xs:simpleContent>
                          <xs:extension base="xs:string">
                            <xs:attribute name="Lang" type="xs:language" default="en-us"
                                use="optional"/>
                          </xs:extension>
                        </xs:simpleContent>
                      </xs:complexType>
                    </xs:element>
                    <xs:element minOccurs="1" maxOccurs="1" name="GUID">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us">
                          This GUID and the Version attribute
                          uniquely identify Package that this Module depends on.
                        </xs:documentation>
                      </xs:annotation>
                      <xs:complexType>
                        <xs:simpleContent>
                          <xs:extension base="RegistryFormatGuid">
                            <xs:attribute name="Version" type="xs:decimal" use="optional">
                              <xs:annotation>
                                <xs:documentation xml:lang="en-us">
                                  This value, along with
                                  the GUID, is used to uniquely identify this object. If the
                                  version attribute is not specified, the most recent version
                                  of the package can be used.
                                </xs:documentation>
                              </xs:annotation>
                            </xs:attribute>
                          </xs:extension>
                        </xs:simpleContent>
                      </xs:complexType>
                    </xs:element>
                  </xs:sequence>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PackageDependencies -->

        <xs:element minOccurs="0" maxOccurs="1" name="Guids">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="GuidCName">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="0" maxOccurs="1" name="GUID" type="RegistryFormatGuid"/>
                    <xs:element minOccurs="0" maxOccurs="1" name="VariableName"
                        type="xs:normalizedString">
                      <xs:annotation>
                        <xs:documentation xml:lang="en-us"> Only valid for Variable GUID types. </xs:documentation>
                        <xs:documentation>
                          This can be either a Hex Array or C string in unicode
                          format: L"string" Data.
                        </xs:documentation>
                      </xs:annotation>
                    </xs:element>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module does not install
                              the GUID, and the GUID must be present for the module to
                              execute.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_CONSUMES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module does not install
                              the GUID, however, the GUID will be used if it is present.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The module always installs
                              the GUID.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="SOMETIMES_PRODUCES">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The Module will install the
                              GUID under certain execution paths.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                        <xs:enumeration value="UNDEFINED">
                          <xs:annotation>
                            <xs:documentation xml:lang="en-us">
                              The package creator knows
                              that a GUID is used, but does not know how it is used.
                            </xs:documentation>
                          </xs:annotation>
                        </xs:enumeration>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="GuidType" type="GuidListType" use="required"/>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of Guids Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="Protocols">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A listing of protocols required or produced by this module.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Protocol" nillable="true">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="0" maxOccurs="1" name="GUID" type="RegistryFormatGuid"/>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="PRODUCES"/>
                        <xs:enumeration value="SOMETIMES_PRODUCES"/>
                        <xs:enumeration value="CONSUMES"/>
                        <xs:enumeration value="SOMETIMES_CONSUMES"/>
                        <xs:enumeration value="TO_START"/>
                        <xs:enumeration value="BY_START"/>
                        <xs:enumeration value="UNDEFINED"/>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="Notify" type="xs:boolean" use="optional"/>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of Protocols Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="PPIs">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              A listing of PPIs required or produced by this module.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Ppi" nillable="true">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="0" maxOccurs="1" name="GUID" type="RegistryFormatGuid"/>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="Usage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="PRODUCES"/>
                        <xs:enumeration value="SOMETIMES_PRODUCES"/>
                        <xs:enumeration value="CONSUMES"/>
                        <xs:enumeration value="SOMETIMES_CONSUMES"/>
                        <xs:enumeration value="UNDEFINED"/>
                      </xs:restriction>
                    </xs:simpleType>
                  </xs:attribute>
                  <xs:attribute name="Notify" type="xs:boolean" use="optional"/>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PPIs Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="Externs">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              These elements specify additional information about the
              module. This area may be used by tools to generate code.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Extern">
                <xs:complexType>
                  <xs:sequence>
                    <xs:choice minOccurs="1">
                      <xs:sequence>
                        <xs:element minOccurs="0" maxOccurs="1" name="EntryPoint"
                            type="xs:NCName"/>
                        <xs:element minOccurs="0" maxOccurs="1" name="UnloadImage"
                            type="xs:NCName"/>
                      </xs:sequence>
                      <xs:sequence>
                        <xs:element minOccurs="0" maxOccurs="1" name="Constructor"
                            type="xs:NCName"/>
                        <xs:element minOccurs="0" maxOccurs="1" name="Destructor"
                            type="xs:NCName"/>
                      </xs:sequence>
                    </xs:choice>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="1"/>
                  </xs:sequence>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of Externs Section -->

        <xs:element minOccurs="0" maxOccurs="1" name="PcdCoded">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section describes how a platform is coded with respect
              to the platform configuration knobs.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="PcdEntry">
                <xs:complexType>
                  <xs:sequence>
                    <xs:element minOccurs="1" maxOccurs="1" name="CName" type="xs:NCName"/>
                    <xs:element minOccurs="1" maxOccurs="1" name="TokenSpaceGuidCName"
                        type="xs:NCName"/>
                    <xs:element minOccurs="0" maxOccurs="1" name="DefaultValue"
                        type="xs:normalizedString"/>
                    <xs:element ref="HelpText" minOccurs="0" maxOccurs="unbounded"/>
                  </xs:sequence>
                  <xs:attribute name="PcdItemType" type="PcdItemTypes" use="required"/>
                  <xs:attribute name="PcdUsage" use="required">
                    <xs:simpleType>
                      <xs:restriction base="xs:NCName">
                        <xs:enumeration value="PRODUCES"/>
                        <xs:enumeration value="SOMETIMES_PRODUCES"/>
                        <xs:enumeration value="CONSUMES"/>
                        <xs:enumeration value="SOMETIMES_CONSUMES"/>
                        <xs:enumeration value="UNDEFINED"/>
                      </xs:restriction>
                    </xs:simpleType>


                  </xs:attribute>
                  <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
                  <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
                  <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of PcdCoded Section -->

        <xs:element minOccurs="0" maxOccurs="unbounded" name="PeiDepex">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This is the PEI dependency expression for a Dependency
              Section.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element name="Expression" type="xs:string" minOccurs="1" maxOccurs="1">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    An in-fix expression, of C identifiers and TRUE,
                    FALSE, AND, OR, NOT, BEFORE, and AFTER as well as parenthesis () in the in-fix
                    notation. The operators are restricted to grammar defined in the PI
                    specification.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element ref="HelpText" minOccurs="0" maxOccurs="1"/>
            </xs:sequence>
            <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
            <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
            <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
          </xs:complexType>
        </xs:element>
        <!-- End of PeiDepex Section -->

        <xs:element minOccurs="0" maxOccurs="unbounded" name="DxeDepex">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This is the DXE dependency expression for a Dependency
              Section.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element name="Expression" type=" xs:string " minOccurs="1" maxOccurs="1">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    An in-fix expression, of C identifiers and TRUE,
                    FALSE, AND, OR, NOT, BEFORE, and AFTER as well as parenthesis () in the in-fix
                    notation. The operators are restricted to grammar defined in the PI
                    specification.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element ref="HelpText" minOccurs="0" maxOccurs="1"/>
            </xs:sequence>
            <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
            <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
            <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
          </xs:complexType>
        </xs:element>
        <!-- End of DxeDepex Section -->

        <xs:element minOccurs="0" maxOccurs="unbounded" name="SmmDepex">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This is the SMM dependency expression for a Dependency
              Section.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element name="Expression" type=" xs:string " minOccurs="1" maxOccurs="1">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    An in-fix expression, of C identifiers and TRUE,
                    FALSE, AND, OR, NOT, BEFORE, and AFTER as well as parenthesis () in the in-fix
                    notation. The operators are restricted to grammar defined in the PI
                    specification.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element ref="HelpText" minOccurs="0" maxOccurs="1"/>
            </xs:sequence>
            <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
            <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
            <xs:attribute name="FeatureFlag" type="xs:normalizedString" use="optional"/>
          </xs:complexType>
        </xs:element>
        <!-- End of SmmDepex Section -->


        <xs:element minOccurs="0" maxOccurs="1" name="MiscellaneousFiles">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is used to provide comments and/or list
              auxiliary files, such as pdb or map files.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Description">
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="1" maxOccurs="unbounded" name="Filename">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is the path and filename location within
                    the ZIP file.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:anyURI">
                      <xs:attribute name="Executable" type="xs:boolean" default="false"
                          use="optional">
                        <xs:annotation>
                          <xs:documentation xml:lang="en-us">
                            If true, used by installation
                            tools to ensure that a file that must be executable has the
                            correct properties to permit execution.
                          </xs:documentation>
                        </xs:annotation>
                      </xs:attribute>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <!-- End of Module Surface Area Misc Section -->

        <xs:element minOccurs="0" maxOccurs="unbounded" name="UserExtensions">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This section is used for any processing instructions that
              may be custom to the content provided by the distribution that are common to module.
            </xs:documentation>
            <xs:documentation xml:lang="en-us"> The content is vendor specific. </xs:documentation>
            <xs:documentation xml:lang="en-us">
              The content can be plain text as well as any user-defined,
              properly formatted XML structure.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType mixed="true">
            <xs:attribute name="UserId" type="xs:NCName" use="required">
              <xs:annotation>
                <xs:documentation xml:lang="en-us">
                  This is a single word identifier for grouping
                  similar content. For example, ReferenceBuild might be used to identify non-PI
                  compliant build steps, with two different UserExtensions sections, one with an
                  Identifier of Prebuild, and another of PostBuild. Both UserExtensions sections would
                  use the same UserId.
                </xs:documentation>
              </xs:annotation>
            </xs:attribute>
            <xs:attribute name="Identifier" type="xs:string" use="required">
              <xs:annotation>
                <xs:documentation xml:lang="en-us">
                  This can be any string used to differentiate or
                  identify this section from other UserExtensions sections.
                </xs:documentation>
                <xs:documentation xml:lang="en-us">
                  For example, a PRE_PROCESS Identifier might indicate
                  specific steps and tools required before processing module content, while a
                  different UserExtensions section with a POST_PROCESS Identifier might describe steps
                  that need to be executed after operations on this module.
                </xs:documentation>
              </xs:annotation>
            </xs:attribute>
            <xs:anyAttribute processContents="lax"/>
          </xs:complexType>
        </xs:element>
        <!-- End of Module Surface Area UserExtensions Section -->

      </xs:sequence>
      <xs:attribute name="BinaryModule" type="xs:boolean" default="false" use="optional">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This attribute is used when the binaries are distributed for
            this module and no code generation from source files is required. If set, then the BinaryFiles
            section should be used, and any files listed in the SourceFiles section do not have to be built.
            Additionally, the AsBuilt section for each binary file must be included.
          </xs:documentation>
        </xs:annotation>
      </xs:attribute>
    </xs:complexType>

  </xs:element>
  <!-- End of the ModuleSurfaceArea element. -->

  <xs:element name="Tools">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="1" name="Header">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="1" maxOccurs="1" name="Name" type="xs:normalizedString">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is the User Interface Name for this Tools
                    Distribution.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="Copyright" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the Copyright is
                    different from the Distribution Package copyright.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="License" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the License is
                    different from the Distribution Package license.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="Abstract">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the Abstract is
                    different from the Distribution Package Abstract.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:normalizedString">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="Description">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the Description is
                    different from the Distribution Package Description.
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>

              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="1" maxOccurs="unbounded" name="Filename">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This is the path and filename location within the ZIP file.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:anyURI">
                <xs:attribute name="OS" type="SupportedOs" use="optional">
                  <xs:annotation>
                    <xs:documentation xml:lang="en-us">
                      This is required for tools that execute; it
                      should not be used for configuration files.
                    </xs:documentation>
                  </xs:annotation>
                </xs:attribute>
                <xs:attribute name="Executable" type="xs:boolean" default="false" use="optional">
                  <xs:annotation>
                    <xs:documentation xml:lang="en-us">
                      If true, used by installation tools to
                      ensure that a file that must be executable has the correct properties to
                      permit execution.
                    </xs:documentation>
                  </xs:annotation>
                </xs:attribute>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <!-- End of the Tools element. -->

  <xs:element name="MiscellaneousFiles">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        This section contains a list of files that are not part of the code
        distributed with modules, packages or tools.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="1" name="Header">
          <xs:complexType>
            <xs:sequence>
              <xs:element minOccurs="0" maxOccurs="1" name="Name" type="xs:normalizedString">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    The User interface name for this content.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="Copyright" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the Copyright is
                    different from the Distribution Package Copyright.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="License" type="xs:string">
                <xs:annotation>
                  <xs:documentation xml:lang="en-us">
                    This is only required if the License is
                    different from the Distribution Package License.
                  </xs:documentation>
                </xs:annotation>
              </xs:element>
              <xs:element minOccurs="0" maxOccurs="1" name="Abstract" type="xs:normalizedString"/>
              <xs:element minOccurs="0" maxOccurs="unbounded" name="Description">
                <xs:complexType>
                  <xs:simpleContent>
                    <xs:extension base="xs:string">
                      <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"
                                            />
                    </xs:extension>
                  </xs:simpleContent>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="Filename">
          <xs:annotation>
            <xs:documentation xml:lang="en-us">
              This is the path and filename location within the ZIP file.
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:simpleContent>
              <xs:extension base="xs:anyURI">
                <xs:attribute name="Executable" type="xs:boolean" default="false" use="optional">
                  <xs:annotation>
                    <xs:documentation xml:lang="en-us">
                      If true, used by installation tools to
                      ensure that a file that must be executable has the correct properties to
                      permit execution.
                    </xs:documentation>
                  </xs:annotation>
                </xs:attribute>
              </xs:extension>
            </xs:simpleContent>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <!-- End of the Misc element. -->

  <xs:element name="UserExtensions">
    <xs:complexType mixed="true">
      <xs:sequence>
        <xs:any processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
      </xs:sequence>
      <xs:attribute name="UserId" type="xs:NCName" use="required">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This is a single word identifier for grouping similar content.
            For example, ReferenceBuild might be used to identify non-PI compliant build steps, with two
            different UserExtensions sections, one with an Identifier of Prebuild, and another of PostBuild.
            Both UserExtensions sections would use the same UserId.
          </xs:documentation>
        </xs:annotation>
      </xs:attribute>
      <xs:attribute name="Identifier" type="xs:string" use="optional">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This can be any string used to differentiate or identify this
            section from other UserExtensions sections.
          </xs:documentation>
          <xs:documentation xml:lang="en-us">
            For example, a PRE_PROCESS Identifier might indicate specific
            steps and tools required before processing distribution package content, while a different
            UserExtensions section with a POST_PROCESS Identifier might describe steps that need to be
            executed after operations on this content.
          </xs:documentation>
        </xs:annotation>
      </xs:attribute>
      <xs:anyAttribute processContents="lax"/>
    </xs:complexType>
  </xs:element>
  <!-- The following elements are common definitions used with the ref attribute for elements. -->

  <xs:element name="HelpText">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="xs:string">
          <xs:attribute name="Lang" type="xs:language" default="en-us" use="optional"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>

  <!-- The following attribute groups are used in various elements above. -->

  <xs:attributeGroup name="SupportedArchMod">
    <xs:attribute name="SupArchList" type="ArchListType" use="optional"/>
    <xs:attribute name="SupModList" type="ModuleListType" use="optional"/>
  </xs:attributeGroup>

  <!-- The following data types are used to restrict content. -->

  <xs:simpleType name="ArchListType">
    <xs:list itemType="ArchTypes"/>
  </xs:simpleType>

  <xs:simpleType name="ArchTypes">
    <xs:restriction base="xs:NCName">
      <xs:enumeration value="IA32"/>
      <xs:enumeration value="X64"/>
      <xs:enumeration value="IPF"/>
      <xs:enumeration value="EBC"/>
      <xs:enumeration value="ARM"/>
      <xs:pattern value="([A-Z])([a-zA-Z0-9])*">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            Any processor architecture not listed above. The Architecture
            must be a target architecture of one or more compiler tool chains.
          </xs:documentation>
        </xs:annotation>
      </xs:pattern>
    </xs:restriction>
  </xs:simpleType>


  <xs:simpleType name="FamilyTypes">
    <xs:restriction base="xs:NCName">
      <xs:enumeration value="MSFT"/>
      <xs:enumeration value="GCC"/>
      <xs:pattern value="[A-Z][a-zA-Z0-9]*">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            Any other family of build utilities for which compiler tools
            exist.
          </xs:documentation>
        </xs:annotation>
      </xs:pattern>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="GuidListType">
    <xs:list itemType="GuidTypes"/>
  </xs:simpleType>

  <xs:simpleType name="GuidTypes">
    <xs:restriction base="xs:NCName">
      <xs:enumeration value="Event"/>
      <xs:enumeration value="File"/>
      <xs:enumeration value="FV"/>
      <xs:enumeration value="GUID"/>
      <xs:enumeration value="HII"/>
      <xs:enumeration value="Hii"/>
      <xs:enumeration value="HOB"/>
      <xs:enumeration value="SystemTable"/>
      <xs:enumeration value="TokenSpaceGuid"/>
      <xs:enumeration value="Variable"/>
      <xs:enumeration value="UNDEFINED"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="HexNumber">
    <xs:restriction base="xs:hexBinary">
      <xs:pattern value="0x([a-fA-F0-9])+"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="Md5Sum">
    <xs:restriction base="xs:normalizedString">
      <xs:pattern value="[a-zA-Z0-9]{32}"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="ModuleListType">
    <xs:list itemType="ModuleTypes"/>
  </xs:simpleType>

  <xs:simpleType name="ModuleTypes">
    <xs:annotation>
      <xs:documentation xml:lang="en-us"> The following module types are defined by specifications. </xs:documentation>
      <xs:documentation xml:lang="en-us">
        Module types for components and libraries defined for this distribution
        mechanism.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:NCName">
      <xs:enumeration value="BASE ">
        <xs:annotation>
          <xs:documentation xml:lang="en-us"> Use of this module is not restricted. </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="DXE_CORE">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to the DXE core.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="DXE_DRIVER">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to a DXE driver.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="DXE_RUNTIME_DRIVER">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to a DXE runtime driver.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="DXE_SMM_DRIVER">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to a DXE SMM driver.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="PEI_CORE">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to the PEI core.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="PEIM">
        <xs:annotation>
          <xs:documentation xml:lang="en-us"> This module is only valid for PEI modules. </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="SEC">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to Security phase.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="UEFI_DRIVER">
        <xs:annotation>
          <xs:documentation xml:lang="en-us"> This module is only valid for UEFI drivers. </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="UEFI_RUNTIME_DRIVER">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only valid for UEFI runtime
            drivers.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="UEFI_APPLICATION">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only valid for UEFI applications.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="SMM_CORE">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This module is only applicable to the SMM
            core.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="USER_DEFINED">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This content is restricted to a specific implementation.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="UNDEFINED">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This enumeration is for use in a list that where the package
            creator does not know the what module types are supported by a module.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:pattern value="([A-Z])([a-zA-Z0-9])*">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This pattern has been added for use in a module lists - for
            future expansion.
          </xs:documentation>
        </xs:annotation>
      </xs:pattern>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="PcdDatumTypes">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        The following data types are defined by the PCD specification (or PCD
        section of the UEFI/PI specifications.)
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:normalizedString">
      <xs:enumeration value="UINT8"/>
      <xs:enumeration value="UINT16"/>
      <xs:enumeration value="UINT32"/>
      <xs:enumeration value="UINT64"/>
      <xs:enumeration value="BOOLEAN"/>
      <xs:enumeration value="VOID*"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="PcdItemListType">
    <xs:list itemType="PcdItemTypes"/>
  </xs:simpleType>

  <xs:simpleType name="PcdItemTypes">
    <xs:restriction base="xs:NCName">
      <xs:enumeration value="FeaturePcd">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            The Feature PCD is a binary, evaluating to either true or false.
            This is used during build to include/exclude content. It can also be used during execution to
            force execution paths within drivers, or to enable/disable features within a driver for a given
            platform.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="FixedPcd">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            The Fixed PCD is a #define value that is set at build time.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="PatchPcd">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            The Patch PCD is a #define that is set at build time, and that
            can be modified within a binary file. Additional information, such as the offset location of the
            value, along with its length may need to be provided.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="Pcd">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            This PCD type has an overloaded definition. Prior to build, the
            platform integrator may choose to implement a PCD as Fixed, Patchable or a Dynamic PCD. If the
            platform integrator choose to use the PCD as dynamic, then a PCD driver is required in the
            platform (PEI/DXE/both) to track the PCD in some sort of 'database' of these items. For Dynamic
            PCDs, the PcdGet* must pass in the token space guid and the token number to retrieve data
            (PcdSet* also needs these values.)
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="PcdEx">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            The PCD can only be used as Dynamic, and the platform firmware
            must contain a driver to maintain a 'database' of these items. For Dynamic PCDs, the PcdGet*
            must pass in the token space guid and the token number to retrieve data (PcdSet* also needs
            these values.)
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="RegistryFormatGuid">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        A GUID must contain five different Hexadecimal character sets that are
        separated by a dash (-) character.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
      <xs:pattern value="\s*[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}\s*"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="SupportedOs">
    <xs:annotation>
      <xs:documentation xml:lang="en-us">
        The EDK II build system supports workstations running one of the
        following supported operating systems. This is the OS for the developer's workstation, not the target
        platform.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
      <xs:enumeration value="Win32">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            For Windows 2003, Windows XP and Windows Vista.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="Win64">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            For Windows 2003, Windows XP and Windows Vista.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="RedHat32"/>
      <xs:enumeration value="RedHat64"/>
      <xs:enumeration value="SuSE32"/>
      <xs:enumeration value="SuSE64"/>
      <xs:enumeration value="Linux32"/>
      <xs:enumeration value="Linux64"/>
      <xs:enumeration value="OS/X32"/>
      <xs:enumeration value="OS/X64"/>
      <xs:enumeration value="Generic"/>
      <xs:enumeration value="GenericWin">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            Typically, this is used for Windows Batch files.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="GenericNix">
        <xs:annotation>
          <xs:documentation xml:lang="en-us">
            Typically use for shell scripts - valid for any Linux and Mac
            OS/X.
          </xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:pattern value="[a-zA-Z]([a-zA-Z0-9])*"/>
    </xs:restriction>
  </xs:simpleType>

</xs:schema>