BaseTools: AutoGen refactor ModuleAutoGen caching

[mirror_edk2.git] / BaseTools / Source / Python / AutoGen / AutoGen.py

## @file
# Generate AutoGen.h, AutoGen.c and *.depex files
#
# Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2018, Hewlett Packard Enterprise Development, L.P.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution.  The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#

## Import Modules
#
from __future__ import print_function
from __future__ import absolute_import
import Common.LongFilePathOs as os
import re
import os.path as path
import copy
import uuid

from . import GenC
from . import GenMake
from . import GenDepex
from io import BytesIO

from .StrGather import *
from .BuildEngine import BuildRule

from Common.LongFilePathSupport import CopyLongFilePath
from Common.BuildToolError import *
from Common.DataType import *
from Common.Misc import *
from Common.StringUtils import *
import Common.GlobalData as GlobalData
from GenFds.FdfParser import *
from CommonDataClass.CommonClass import SkuInfoClass
from Workspace.BuildClassObject import *
from GenPatchPcdTable.GenPatchPcdTable import parsePcdInfoFromMapFile
import Common.VpdInfoFile as VpdInfoFile
from .GenPcdDb import CreatePcdDatabaseCode
from Workspace.MetaFileCommentParser import UsageList
from Workspace.WorkspaceCommon import GetModuleLibInstances
from Common.MultipleWorkspace import MultipleWorkspace as mws
from . import InfSectionParser
import datetime
import hashlib
from .GenVar import VariableMgr, var_info
from collections import OrderedDict
from collections import defaultdict
from Workspace.WorkspaceCommon import OrderedListDict

from Common.caching import cached_property

## Regular expression for splitting Dependency Expression string into tokens
gDepexTokenPattern = re.compile("(\(|\)|\w+| \S+\.inf)")

## Regular expression for match: PCD(xxxx.yyy)
gPCDAsGuidPattern = re.compile(r"^PCD\(.+\..+\)$")

#
# Regular expression for finding Include Directories, the difference between MSFT and INTEL/GCC/RVCT
# is the former use /I , the Latter used -I to specify include directories
#
gBuildOptIncludePatternMsft = re.compile(r"(?:.*?)/I[ \t]*([^ ]*)", re.MULTILINE | re.DOTALL)
gBuildOptIncludePatternOther = re.compile(r"(?:.*?)-I[ \t]*([^ ]*)", re.MULTILINE | re.DOTALL)

#
# Match name = variable
#
gEfiVarStoreNamePattern = re.compile("\s*name\s*=\s*(\w+)")
#
# The format of guid in efivarstore statement likes following and must be correct:
# guid = {0xA04A27f4, 0xDF00, 0x4D42, {0xB5, 0x52, 0x39, 0x51, 0x13, 0x02, 0x11, 0x3D}}
#
gEfiVarStoreGuidPattern = re.compile("\s*guid\s*=\s*({.*?{.*?}\s*})")

## Mapping Makefile type
gMakeTypeMap = {"MSFT":"nmake", "GCC":"gmake"}


## Build rule configuration file
gDefaultBuildRuleFile = 'build_rule.txt'

## Tools definition configuration file
gDefaultToolsDefFile = 'tools_def.txt'

## Build rule default version
AutoGenReqBuildRuleVerNum = "0.1"

## default file name for AutoGen
gAutoGenCodeFileName = "AutoGen.c"
gAutoGenHeaderFileName = "AutoGen.h"
gAutoGenStringFileName = "%(module_name)sStrDefs.h"
gAutoGenStringFormFileName = "%(module_name)sStrDefs.hpk"
gAutoGenDepexFileName = "%(module_name)s.depex"
gAutoGenImageDefFileName = "%(module_name)sImgDefs.h"
gAutoGenIdfFileName = "%(module_name)sIdf.hpk"
gInfSpecVersion = "0x00010017"

#
# Template string to generic AsBuilt INF
#
gAsBuiltInfHeaderString = TemplateString("""${header_comments}

# DO NOT EDIT
# FILE auto-generated

[Defines]
  INF_VERSION                = ${module_inf_version}
  BASE_NAME                  = ${module_name}
  FILE_GUID                  = ${module_guid}
  MODULE_TYPE                = ${module_module_type}${BEGIN}
  VERSION_STRING             = ${module_version_string}${END}${BEGIN}
  PCD_IS_DRIVER              = ${pcd_is_driver_string}${END}${BEGIN}
  UEFI_SPECIFICATION_VERSION = ${module_uefi_specification_version}${END}${BEGIN}
  PI_SPECIFICATION_VERSION   = ${module_pi_specification_version}${END}${BEGIN}
  ENTRY_POINT                = ${module_entry_point}${END}${BEGIN}
  UNLOAD_IMAGE               = ${module_unload_image}${END}${BEGIN}
  CONSTRUCTOR                = ${module_constructor}${END}${BEGIN}
  DESTRUCTOR                 = ${module_destructor}${END}${BEGIN}
  SHADOW                     = ${module_shadow}${END}${BEGIN}
  PCI_VENDOR_ID              = ${module_pci_vendor_id}${END}${BEGIN}
  PCI_DEVICE_ID              = ${module_pci_device_id}${END}${BEGIN}
  PCI_CLASS_CODE             = ${module_pci_class_code}${END}${BEGIN}
  PCI_REVISION               = ${module_pci_revision}${END}${BEGIN}
  BUILD_NUMBER               = ${module_build_number}${END}${BEGIN}
  SPEC                       = ${module_spec}${END}${BEGIN}
  UEFI_HII_RESOURCE_SECTION  = ${module_uefi_hii_resource_section}${END}${BEGIN}
  MODULE_UNI_FILE            = ${module_uni_file}${END}

[Packages.${module_arch}]${BEGIN}
  ${package_item}${END}

[Binaries.${module_arch}]${BEGIN}
  ${binary_item}${END}

[PatchPcd.${module_arch}]${BEGIN}
  ${patchablepcd_item}
${END}

[Protocols.${module_arch}]${BEGIN}
  ${protocol_item}
${END}

[Ppis.${module_arch}]${BEGIN}
  ${ppi_item}
${END}

[Guids.${module_arch}]${BEGIN}
  ${guid_item}
${END}

[PcdEx.${module_arch}]${BEGIN}
  ${pcd_item}
${END}

[LibraryClasses.${module_arch}]
## @LIB_INSTANCES${BEGIN}
#  ${libraryclasses_item}${END}

${depexsection_item}

${userextension_tianocore_item}

${tail_comments}

[BuildOptions.${module_arch}]
## @AsBuilt${BEGIN}
##   ${flags_item}${END}
""")

## Base class for AutoGen
#
#   This class just implements the cache mechanism of AutoGen objects.
#
class AutoGen(object):
    # database to maintain the objects in each child class
    __ObjectCache = {}    # (BuildTarget, ToolChain, ARCH, platform file): AutoGen object

    ## Factory method
    #
    #   @param  Class           class object of real AutoGen class
    #                           (WorkspaceAutoGen, ModuleAutoGen or PlatformAutoGen)
    #   @param  Workspace       Workspace directory or WorkspaceAutoGen object
    #   @param  MetaFile        The path of meta file
    #   @param  Target          Build target
    #   @param  Toolchain       Tool chain name
    #   @param  Arch            Target arch
    #   @param  *args           The specific class related parameters
    #   @param  **kwargs        The specific class related dict parameters
    #
    def __new__(cls, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):
        # check if the object has been created
        Key = (Target, Toolchain, Arch, MetaFile)
        if Key in cls.__ObjectCache:
            # if it exists, just return it directly
            return cls.__ObjectCache[Key]
            # it didnt exist. create it, cache it, then return it
        RetVal = cls.__ObjectCache[Key] = super(AutoGen, cls).__new__(cls)
        return RetVal

    def __init__ (self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):
        super(AutoGen, self).__init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)

    ## hash() operator
    #
    #  The file path of platform file will be used to represent hash value of this object
    #
    #   @retval int     Hash value of the file path of platform file
    #
    def __hash__(self):
        return hash(self.MetaFile)

    ## str() operator
    #
    #  The file path of platform file will be used to represent this object
    #
    #   @retval string  String of platform file path
    #
    def __str__(self):
        return str(self.MetaFile)

    ## "==" operator
    def __eq__(self, Other):
        return Other and self.MetaFile == Other

## Workspace AutoGen class
#
#   This class is used mainly to control the whole platform build for different
# architecture. This class will generate top level makefile.
#
class WorkspaceAutoGen(AutoGen):
    # call super().__init__ then call the worker function with different parameter count
    def __init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):
        if not hasattr(self, "_Init"):
            super(WorkspaceAutoGen, self).__init__(Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)
            self._InitWorker(Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)
            self._Init = True

    ## Initialize WorkspaceAutoGen
    #
    #   @param  WorkspaceDir            Root directory of workspace
    #   @param  ActivePlatform          Meta-file of active platform
    #   @param  Target                  Build target
    #   @param  Toolchain               Tool chain name
    #   @param  ArchList                List of architecture of current build
    #   @param  MetaFileDb              Database containing meta-files
    #   @param  BuildConfig             Configuration of build
    #   @param  ToolDefinition          Tool chain definitions
    #   @param  FlashDefinitionFile     File of flash definition
    #   @param  Fds                     FD list to be generated
    #   @param  Fvs                     FV list to be generated
    #   @param  Caps                    Capsule list to be generated
    #   @param  SkuId                   SKU id from command line
    #
    def _InitWorker(self, WorkspaceDir, ActivePlatform, Target, Toolchain, ArchList, MetaFileDb,
              BuildConfig, ToolDefinition, FlashDefinitionFile='', Fds=None, Fvs=None, Caps=None, SkuId='', UniFlag=None,
              Progress=None, BuildModule=None):
        self.BuildDatabase  = MetaFileDb
        self.MetaFile       = ActivePlatform
        self.WorkspaceDir   = WorkspaceDir
        self.Platform       = self.BuildDatabase[self.MetaFile, TAB_ARCH_COMMON, Target, Toolchain]
        GlobalData.gActivePlatform = self.Platform
        self.BuildTarget    = Target
        self.ToolChain      = Toolchain
        self.ArchList       = ArchList
        self.SkuId          = SkuId
        self.UniFlag        = UniFlag

        self.TargetTxt      = BuildConfig
        self.ToolDef        = ToolDefinition
        self.FdfFile        = FlashDefinitionFile
        self.FdTargetList   = Fds if Fds else []
        self.FvTargetList   = Fvs if Fvs else []
        self.CapTargetList  = Caps if Caps else []
        self.AutoGenObjectList = []
        self._BuildDir      = None
        self._FvDir         = None
        self._MakeFileDir   = None
        self._BuildCommand  = None
        self._GuidDict = {}

        # there's many relative directory operations, so ...
        os.chdir(self.WorkspaceDir)

        #
        # Merge Arch
        #
        if not self.ArchList:
            ArchList = set(self.Platform.SupArchList)
        else:
            ArchList = set(self.ArchList) & set(self.Platform.SupArchList)
        if not ArchList:
            EdkLogger.error("build", PARAMETER_INVALID,
                            ExtraData = "Invalid ARCH specified. [Valid ARCH: %s]" % (" ".join(self.Platform.SupArchList)))
        elif self.ArchList and len(ArchList) != len(self.ArchList):
            SkippedArchList = set(self.ArchList).symmetric_difference(set(self.Platform.SupArchList))
            EdkLogger.verbose("\nArch [%s] is ignored because the platform supports [%s] only!"
                              % (" ".join(SkippedArchList), " ".join(self.Platform.SupArchList)))
        self.ArchList = tuple(ArchList)

        # Validate build target
        if self.BuildTarget not in self.Platform.BuildTargets:
            EdkLogger.error("build", PARAMETER_INVALID,
                            ExtraData="Build target [%s] is not supported by the platform. [Valid target: %s]"
                                      % (self.BuildTarget, " ".join(self.Platform.BuildTargets)))


        # parse FDF file to get PCDs in it, if any
        if not self.FdfFile:
            self.FdfFile = self.Platform.FlashDefinition

        EdkLogger.info("")
        if self.ArchList:
            EdkLogger.info('%-16s = %s' % ("Architecture(s)", ' '.join(self.ArchList)))
        EdkLogger.info('%-16s = %s' % ("Build target", self.BuildTarget))
        EdkLogger.info('%-16s = %s' % ("Toolchain", self.ToolChain))

        EdkLogger.info('\n%-24s = %s' % ("Active Platform", self.Platform))
        if BuildModule:
            EdkLogger.info('%-24s = %s' % ("Active Module", BuildModule))

        if self.FdfFile:
            EdkLogger.info('%-24s = %s' % ("Flash Image Definition", self.FdfFile))

        EdkLogger.verbose("\nFLASH_DEFINITION = %s" % self.FdfFile)

        if Progress:
            Progress.Start("\nProcessing meta-data")

        if self.FdfFile:
            #
            # Mark now build in AutoGen Phase
            #
            GlobalData.gAutoGenPhase = True
            Fdf = FdfParser(self.FdfFile.Path)
            Fdf.ParseFile()
            GlobalData.gFdfParser = Fdf
            GlobalData.gAutoGenPhase = False
            PcdSet = Fdf.Profile.PcdDict
            if Fdf.CurrentFdName and Fdf.CurrentFdName in Fdf.Profile.FdDict:
                FdDict = Fdf.Profile.FdDict[Fdf.CurrentFdName]
                for FdRegion in FdDict.RegionList:
                    if str(FdRegion.RegionType) is 'FILE' and self.Platform.VpdToolGuid in str(FdRegion.RegionDataList):
                        if int(FdRegion.Offset) % 8 != 0:
                            EdkLogger.error("build", FORMAT_INVALID, 'The VPD Base Address %s must be 8-byte aligned.' % (FdRegion.Offset))
            ModuleList = Fdf.Profile.InfList
            self.FdfProfile = Fdf.Profile
            for fvname in self.FvTargetList:
                if fvname.upper() not in self.FdfProfile.FvDict:
                    EdkLogger.error("build", OPTION_VALUE_INVALID,
                                    "No such an FV in FDF file: %s" % fvname)

            # In DSC file may use FILE_GUID to override the module, then in the Platform.Modules use FILE_GUIDmodule.inf as key,
            # but the path (self.MetaFile.Path) is the real path
            for key in self.FdfProfile.InfDict:
                if key == 'ArchTBD':
                    MetaFile_cache = defaultdict(set)
                    for Arch in self.ArchList:
                        Current_Platform_cache = self.BuildDatabase[self.MetaFile, Arch, Target, Toolchain]
                        for Pkey in Current_Platform_cache.Modules:
                            MetaFile_cache[Arch].add(Current_Platform_cache.Modules[Pkey].MetaFile)
                    for Inf in self.FdfProfile.InfDict[key]:
                        ModuleFile = PathClass(NormPath(Inf), GlobalData.gWorkspace, Arch)
                        for Arch in self.ArchList:
                            if ModuleFile in MetaFile_cache[Arch]:
                                break
                        else:
                            ModuleData = self.BuildDatabase[ModuleFile, Arch, Target, Toolchain]
                            if not ModuleData.IsBinaryModule:
                                EdkLogger.error('build', PARSER_ERROR, "Module %s NOT found in DSC file; Is it really a binary module?" % ModuleFile)

                else:
                    for Arch in self.ArchList:
                        if Arch == key:
                            Platform = self.BuildDatabase[self.MetaFile, Arch, Target, Toolchain]
                            MetaFileList = set()
                            for Pkey in Platform.Modules:
                                MetaFileList.add(Platform.Modules[Pkey].MetaFile)
                            for Inf in self.FdfProfile.InfDict[key]:
                                ModuleFile = PathClass(NormPath(Inf), GlobalData.gWorkspace, Arch)
                                if ModuleFile in MetaFileList:
                                    continue
                                ModuleData = self.BuildDatabase[ModuleFile, Arch, Target, Toolchain]
                                if not ModuleData.IsBinaryModule:
                                    EdkLogger.error('build', PARSER_ERROR, "Module %s NOT found in DSC file; Is it really a binary module?" % ModuleFile)

        else:
            PcdSet = {}
            ModuleList = []
            self.FdfProfile = None
            if self.FdTargetList:
                EdkLogger.info("No flash definition file found. FD [%s] will be ignored." % " ".join(self.FdTargetList))
                self.FdTargetList = []
            if self.FvTargetList:
                EdkLogger.info("No flash definition file found. FV [%s] will be ignored." % " ".join(self.FvTargetList))
                self.FvTargetList = []
            if self.CapTargetList:
                EdkLogger.info("No flash definition file found. Capsule [%s] will be ignored." % " ".join(self.CapTargetList))
                self.CapTargetList = []

        # apply SKU and inject PCDs from Flash Definition file
        for Arch in self.ArchList:
            Platform = self.BuildDatabase[self.MetaFile, Arch, Target, Toolchain]
            PlatformPcds = Platform.Pcds
            self._GuidDict = Platform._GuidDict
            SourcePcdDict = {TAB_PCDS_DYNAMIC_EX:set(), TAB_PCDS_PATCHABLE_IN_MODULE:set(),TAB_PCDS_DYNAMIC:set(),TAB_PCDS_FIXED_AT_BUILD:set()}
            BinaryPcdDict = {TAB_PCDS_DYNAMIC_EX:set(), TAB_PCDS_PATCHABLE_IN_MODULE:set()}
            SourcePcdDict_Keys = SourcePcdDict.keys()
            BinaryPcdDict_Keys = BinaryPcdDict.keys()

            # generate the SourcePcdDict and BinaryPcdDict
            PGen = PlatformAutoGen(self, self.MetaFile, Target, Toolchain, Arch)
            for BuildData in PGen.BuildDatabase._CACHE_.values():
                if BuildData.Arch != Arch:
                    continue
                if BuildData.MetaFile.Ext == '.inf':
                    for key in BuildData.Pcds:
                        if BuildData.Pcds[key].Pending:
                            if key in Platform.Pcds:
                                PcdInPlatform = Platform.Pcds[key]
                                if PcdInPlatform.Type:
                                    BuildData.Pcds[key].Type = PcdInPlatform.Type
                                    BuildData.Pcds[key].Pending = False

                            if BuildData.MetaFile in Platform.Modules:
                                PlatformModule = Platform.Modules[str(BuildData.MetaFile)]
                                if key in PlatformModule.Pcds:
                                    PcdInPlatform = PlatformModule.Pcds[key]
                                    if PcdInPlatform.Type:
                                        BuildData.Pcds[key].Type = PcdInPlatform.Type
                                        BuildData.Pcds[key].Pending = False
                            else:
                                #Pcd used in Library, Pcd Type from reference module if Pcd Type is Pending
                                if BuildData.Pcds[key].Pending:
                                    MGen = ModuleAutoGen(self, BuildData.MetaFile, Target, Toolchain, Arch, self.MetaFile)
                                    if MGen and MGen.IsLibrary:
                                        if MGen in PGen.LibraryAutoGenList:
                                            ReferenceModules = MGen.ReferenceModules
                                            for ReferenceModule in ReferenceModules:
                                                if ReferenceModule.MetaFile in Platform.Modules:
                                                    RefPlatformModule = Platform.Modules[str(ReferenceModule.MetaFile)]
                                                    if key in RefPlatformModule.Pcds:
                                                        PcdInReferenceModule = RefPlatformModule.Pcds[key]
                                                        if PcdInReferenceModule.Type:
                                                            BuildData.Pcds[key].Type = PcdInReferenceModule.Type
                                                            BuildData.Pcds[key].Pending = False
                                                            break

                        if TAB_PCDS_DYNAMIC_EX in BuildData.Pcds[key].Type:
                            if BuildData.IsBinaryModule:
                                BinaryPcdDict[TAB_PCDS_DYNAMIC_EX].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))
                            else:
                                SourcePcdDict[TAB_PCDS_DYNAMIC_EX].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))

                        elif TAB_PCDS_PATCHABLE_IN_MODULE in BuildData.Pcds[key].Type:
                            if BuildData.MetaFile.Ext == '.inf':
                                if BuildData.IsBinaryModule:
                                    BinaryPcdDict[TAB_PCDS_PATCHABLE_IN_MODULE].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))
                                else:
                                    SourcePcdDict[TAB_PCDS_PATCHABLE_IN_MODULE].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))

                        elif TAB_PCDS_DYNAMIC in BuildData.Pcds[key].Type:
                            SourcePcdDict[TAB_PCDS_DYNAMIC].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))
                        elif TAB_PCDS_FIXED_AT_BUILD in BuildData.Pcds[key].Type:
                            SourcePcdDict[TAB_PCDS_FIXED_AT_BUILD].add((BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName))
                else:
                    pass
            #
            # A PCD can only use one type for all source modules
            #
            for i in SourcePcdDict_Keys:
                for j in SourcePcdDict_Keys:
                    if i != j:
                        Intersections = SourcePcdDict[i].intersection(SourcePcdDict[j])
                        if len(Intersections) > 0:
                            EdkLogger.error(
                            'build',
                            FORMAT_INVALID,
                            "Building modules from source INFs, following PCD use %s and %s access method. It must be corrected to use only one access method." % (i, j),
                            ExtraData='\n\t'.join(str(P[1]+'.'+P[0]) for P in Intersections)
                            )

            #
            # intersection the BinaryPCD for Mixed PCD
            #
            for i in BinaryPcdDict_Keys:
                for j in BinaryPcdDict_Keys:
                    if i != j:
                        Intersections = BinaryPcdDict[i].intersection(BinaryPcdDict[j])
                        for item in Intersections:
                            NewPcd1 = (item[0] + '_' + i, item[1])
                            NewPcd2 = (item[0] + '_' + j, item[1])
                            if item not in GlobalData.MixedPcd:
                                GlobalData.MixedPcd[item] = [NewPcd1, NewPcd2]
                            else:
                                if NewPcd1 not in GlobalData.MixedPcd[item]:
                                    GlobalData.MixedPcd[item].append(NewPcd1)
                                if NewPcd2 not in GlobalData.MixedPcd[item]:
                                    GlobalData.MixedPcd[item].append(NewPcd2)

            #
            # intersection the SourcePCD and BinaryPCD for Mixed PCD
            #
            for i in SourcePcdDict_Keys:
                for j in BinaryPcdDict_Keys:
                    if i != j:
                        Intersections = SourcePcdDict[i].intersection(BinaryPcdDict[j])
                        for item in Intersections:
                            NewPcd1 = (item[0] + '_' + i, item[1])
                            NewPcd2 = (item[0] + '_' + j, item[1])
                            if item not in GlobalData.MixedPcd:
                                GlobalData.MixedPcd[item] = [NewPcd1, NewPcd2]
                            else:
                                if NewPcd1 not in GlobalData.MixedPcd[item]:
                                    GlobalData.MixedPcd[item].append(NewPcd1)
                                if NewPcd2 not in GlobalData.MixedPcd[item]:
                                    GlobalData.MixedPcd[item].append(NewPcd2)

            for BuildData in PGen.BuildDatabase._CACHE_.values():
                if BuildData.Arch != Arch:
                    continue
                for key in BuildData.Pcds:
                    for SinglePcd in GlobalData.MixedPcd:
                        if (BuildData.Pcds[key].TokenCName, BuildData.Pcds[key].TokenSpaceGuidCName) == SinglePcd:
                            for item in GlobalData.MixedPcd[SinglePcd]:
                                Pcd_Type = item[0].split('_')[-1]
                                if (Pcd_Type == BuildData.Pcds[key].Type) or (Pcd_Type == TAB_PCDS_DYNAMIC_EX and BuildData.Pcds[key].Type in PCD_DYNAMIC_EX_TYPE_SET) or \
                                   (Pcd_Type == TAB_PCDS_DYNAMIC and BuildData.Pcds[key].Type in PCD_DYNAMIC_TYPE_SET):
                                    Value = BuildData.Pcds[key]
                                    Value.TokenCName = BuildData.Pcds[key].TokenCName + '_' + Pcd_Type
                                    if len(key) == 2:
                                        newkey = (Value.TokenCName, key[1])
                                    elif len(key) == 3:
                                        newkey = (Value.TokenCName, key[1], key[2])
                                    del BuildData.Pcds[key]
                                    BuildData.Pcds[newkey] = Value
                                    break
                            break

            # handle the mixed pcd in FDF file
            for key in PcdSet:
                if key in GlobalData.MixedPcd:
                    Value = PcdSet[key]
                    del PcdSet[key]
                    for item in GlobalData.MixedPcd[key]:
                        PcdSet[item] = Value

            #Collect package set information from INF of FDF
            PkgSet = set()
            for Inf in ModuleList:
                ModuleFile = PathClass(NormPath(Inf), GlobalData.gWorkspace, Arch)
                if ModuleFile in Platform.Modules:
                    continue
                ModuleData = self.BuildDatabase[ModuleFile, Arch, Target, Toolchain]
                PkgSet.update(ModuleData.Packages)
            Pkgs = list(PkgSet) + list(PGen.PackageList)
            DecPcds = set()
            DecPcdsKey = set()
            for Pkg in Pkgs:
                for Pcd in Pkg.Pcds:
                    DecPcds.add((Pcd[0], Pcd[1]))
                    DecPcdsKey.add((Pcd[0], Pcd[1], Pcd[2]))

            Platform.SkuName = self.SkuId
            for Name, Guid,Fileds in PcdSet:
                if (Name, Guid) not in DecPcds:
                    EdkLogger.error(
                        'build',
                        PARSER_ERROR,
                        "PCD (%s.%s) used in FDF is not declared in DEC files." % (Guid, Name),
                        File = self.FdfProfile.PcdFileLineDict[Name, Guid][0],
                        Line = self.FdfProfile.PcdFileLineDict[Name, Guid][1]
                    )
                else:
                    # Check whether Dynamic or DynamicEx PCD used in FDF file. If used, build break and give a error message.
                    if (Name, Guid, TAB_PCDS_FIXED_AT_BUILD) in DecPcdsKey \
                        or (Name, Guid, TAB_PCDS_PATCHABLE_IN_MODULE) in DecPcdsKey \
                        or (Name, Guid, TAB_PCDS_FEATURE_FLAG) in DecPcdsKey:
                        continue
                    elif (Name, Guid, TAB_PCDS_DYNAMIC) in DecPcdsKey or (Name, Guid, TAB_PCDS_DYNAMIC_EX) in DecPcdsKey:
                        EdkLogger.error(
                                'build',
                                PARSER_ERROR,
                                "Using Dynamic or DynamicEx type of PCD [%s.%s] in FDF file is not allowed." % (Guid, Name),
                                File = self.FdfProfile.PcdFileLineDict[Name, Guid][0],
                                Line = self.FdfProfile.PcdFileLineDict[Name, Guid][1]
                        )

            Pa = PlatformAutoGen(self, self.MetaFile, Target, Toolchain, Arch)
            #
            # Explicitly collect platform's dynamic PCDs
            #
            Pa.CollectPlatformDynamicPcds()
            Pa.CollectFixedAtBuildPcds()
            self.AutoGenObjectList.append(Pa)

            #
            # Generate Package level hash value
            #
            GlobalData.gPackageHash[Arch] = {}
            if GlobalData.gUseHashCache:
                for Pkg in Pkgs:
                    self._GenPkgLevelHash(Pkg)

        #
        # Check PCDs token value conflict in each DEC file.
        #
        self._CheckAllPcdsTokenValueConflict()

        #
        # Check PCD type and definition between DSC and DEC
        #
        self._CheckPcdDefineAndType()

        #
        # Create BuildOptions Macro & PCD metafile, also add the Active Platform and FDF file.
        #
        content = 'gCommandLineDefines: '
        content += str(GlobalData.gCommandLineDefines)
        content += os.linesep
        content += 'BuildOptionPcd: '
        content += str(GlobalData.BuildOptionPcd)
        content += os.linesep
        content += 'Active Platform: '
        content += str(self.Platform)
        content += os.linesep
        if self.FdfFile:
            content += 'Flash Image Definition: '
            content += str(self.FdfFile)
            content += os.linesep
        SaveFileOnChange(os.path.join(self.BuildDir, 'BuildOptions'), content, False)

        #
        # Create PcdToken Number file for Dynamic/DynamicEx Pcd.
        #
        PcdTokenNumber = 'PcdTokenNumber: '
        if Pa.PcdTokenNumber:
            if Pa.DynamicPcdList:
                for Pcd in Pa.DynamicPcdList:
                    PcdTokenNumber += os.linesep
                    PcdTokenNumber += str((Pcd.TokenCName, Pcd.TokenSpaceGuidCName))
                    PcdTokenNumber += ' : '
                    PcdTokenNumber += str(Pa.PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName])
        SaveFileOnChange(os.path.join(self.BuildDir, 'PcdTokenNumber'), PcdTokenNumber, False)

        #
        # Get set of workspace metafiles
        #
        AllWorkSpaceMetaFiles = self._GetMetaFiles(Target, Toolchain, Arch)

        #
        # Retrieve latest modified time of all metafiles
        #
        SrcTimeStamp = 0
        for f in AllWorkSpaceMetaFiles:
            if os.stat(f)[8] > SrcTimeStamp:
                SrcTimeStamp = os.stat(f)[8]
        self._SrcTimeStamp = SrcTimeStamp

        if GlobalData.gUseHashCache:
            m = hashlib.md5()
            for files in AllWorkSpaceMetaFiles:
                if files.endswith('.dec'):
                    continue
                f = open(files, 'r')
                Content = f.read()
                f.close()
                m.update(Content)
            SaveFileOnChange(os.path.join(self.BuildDir, 'AutoGen.hash'), m.hexdigest(), True)
            GlobalData.gPlatformHash = m.hexdigest()

        #
        # Write metafile list to build directory
        #
        AutoGenFilePath = os.path.join(self.BuildDir, 'AutoGen')
        if os.path.exists (AutoGenFilePath):
            os.remove(AutoGenFilePath)
        if not os.path.exists(self.BuildDir):
            os.makedirs(self.BuildDir)
        with open(os.path.join(self.BuildDir, 'AutoGen'), 'w+') as file:
            for f in AllWorkSpaceMetaFiles:
                print(f, file=file)
        return True

    def _GenPkgLevelHash(self, Pkg):
        if Pkg.PackageName in GlobalData.gPackageHash[Pkg.Arch]:
            return

        PkgDir = os.path.join(self.BuildDir, Pkg.Arch, Pkg.PackageName)
        CreateDirectory(PkgDir)
        HashFile = os.path.join(PkgDir, Pkg.PackageName + '.hash')
        m = hashlib.md5()
        # Get .dec file's hash value
        f = open(Pkg.MetaFile.Path, 'r')
        Content = f.read()
        f.close()
        m.update(Content)
        # Get include files hash value
        if Pkg.Includes:
            for inc in sorted(Pkg.Includes, key=lambda x: str(x)):
                for Root, Dirs, Files in os.walk(str(inc)):
                    for File in sorted(Files):
                        File_Path = os.path.join(Root, File)
                        f = open(File_Path, 'r')
                        Content = f.read()
                        f.close()
                        m.update(Content)
        SaveFileOnChange(HashFile, m.hexdigest(), True)
        GlobalData.gPackageHash[Pkg.Arch][Pkg.PackageName] = m.hexdigest()

    def _GetMetaFiles(self, Target, Toolchain, Arch):
        AllWorkSpaceMetaFiles = set()
        #
        # add fdf
        #
        if self.FdfFile:
            AllWorkSpaceMetaFiles.add (self.FdfFile.Path)
            for f in GlobalData.gFdfParser.GetAllIncludedFile():
                AllWorkSpaceMetaFiles.add (f.FileName)
        #
        # add dsc
        #
        AllWorkSpaceMetaFiles.add(self.MetaFile.Path)

        #
        # add build_rule.txt & tools_def.txt
        #
        AllWorkSpaceMetaFiles.add(os.path.join(GlobalData.gConfDirectory, gDefaultBuildRuleFile))
        AllWorkSpaceMetaFiles.add(os.path.join(GlobalData.gConfDirectory, gDefaultToolsDefFile))

        # add BuildOption metafile
        #
        AllWorkSpaceMetaFiles.add(os.path.join(self.BuildDir, 'BuildOptions'))

        # add PcdToken Number file for Dynamic/DynamicEx Pcd
        #
        AllWorkSpaceMetaFiles.add(os.path.join(self.BuildDir, 'PcdTokenNumber'))

        for Arch in self.ArchList:
            #
            # add dec
            #
            for Package in PlatformAutoGen(self, self.MetaFile, Target, Toolchain, Arch).PackageList:
                AllWorkSpaceMetaFiles.add(Package.MetaFile.Path)

            #
            # add included dsc
            #
            for filePath in self.BuildDatabase[self.MetaFile, Arch, Target, Toolchain]._RawData.IncludedFiles:
                AllWorkSpaceMetaFiles.add(filePath.Path)

        return AllWorkSpaceMetaFiles

    def _CheckPcdDefineAndType(self):
        PcdTypeSet = {TAB_PCDS_FIXED_AT_BUILD,
            TAB_PCDS_PATCHABLE_IN_MODULE,
            TAB_PCDS_FEATURE_FLAG,
            TAB_PCDS_DYNAMIC,
            TAB_PCDS_DYNAMIC_EX}

        # This dict store PCDs which are not used by any modules with specified arches
        UnusedPcd = OrderedDict()
        for Pa in self.AutoGenObjectList:
            # Key of DSC's Pcds dictionary is PcdCName, TokenSpaceGuid
            for Pcd in Pa.Platform.Pcds:
                PcdType = Pa.Platform.Pcds[Pcd].Type

                # If no PCD type, this PCD comes from FDF
                if not PcdType:
                    continue

                # Try to remove Hii and Vpd suffix
                if PcdType.startswith(TAB_PCDS_DYNAMIC_EX):
                    PcdType = TAB_PCDS_DYNAMIC_EX
                elif PcdType.startswith(TAB_PCDS_DYNAMIC):
                    PcdType = TAB_PCDS_DYNAMIC

                for Package in Pa.PackageList:
                    # Key of DEC's Pcds dictionary is PcdCName, TokenSpaceGuid, PcdType
                    if (Pcd[0], Pcd[1], PcdType) in Package.Pcds:
                        break
                    for Type in PcdTypeSet:
                        if (Pcd[0], Pcd[1], Type) in Package.Pcds:
                            EdkLogger.error(
                                'build',
                                FORMAT_INVALID,
                                "Type [%s] of PCD [%s.%s] in DSC file doesn't match the type [%s] defined in DEC file." \
                                % (Pa.Platform.Pcds[Pcd].Type, Pcd[1], Pcd[0], Type),
                                ExtraData=None
                            )
                            return
                else:
                    UnusedPcd.setdefault(Pcd, []).append(Pa.Arch)

        for Pcd in UnusedPcd:
            EdkLogger.warn(
                'build',
                "The PCD was not specified by any INF module in the platform for the given architecture.\n"
                "\tPCD: [%s.%s]\n\tPlatform: [%s]\n\tArch: %s"
                % (Pcd[1], Pcd[0], os.path.basename(str(self.MetaFile)), str(UnusedPcd[Pcd])),
                ExtraData=None
            )

    def __repr__(self):
        return "%s [%s]" % (self.MetaFile, ", ".join(self.ArchList))

    ## Return the directory to store FV files
    def _GetFvDir(self):
        if self._FvDir is None:
            self._FvDir = path.join(self.BuildDir, TAB_FV_DIRECTORY)
        return self._FvDir

    ## Return the directory to store all intermediate and final files built
    def _GetBuildDir(self):
        if self._BuildDir is None:
            return self.AutoGenObjectList[0].BuildDir

    ## Return the build output directory platform specifies
    def _GetOutputDir(self):
        return self.Platform.OutputDirectory

    ## Return platform name
    def _GetName(self):
        return self.Platform.PlatformName

    ## Return meta-file GUID
    def _GetGuid(self):
        return self.Platform.Guid

    ## Return platform version
    def _GetVersion(self):
        return self.Platform.Version

    ## Return paths of tools
    def _GetToolDefinition(self):
        return self.AutoGenObjectList[0].ToolDefinition

    ## Return directory of platform makefile
    #
    #   @retval     string  Makefile directory
    #
    def _GetMakeFileDir(self):
        if self._MakeFileDir is None:
            self._MakeFileDir = self.BuildDir
        return self._MakeFileDir

    ## Return build command string
    #
    #   @retval     string  Build command string
    #
    def _GetBuildCommand(self):
        if self._BuildCommand is None:
            # BuildCommand should be all the same. So just get one from platform AutoGen
            self._BuildCommand = self.AutoGenObjectList[0].BuildCommand
        return self._BuildCommand

    ## Check the PCDs token value conflict in each DEC file.
    #
    # Will cause build break and raise error message while two PCDs conflict.
    #
    # @return  None
    #
    def _CheckAllPcdsTokenValueConflict(self):
        for Pa in self.AutoGenObjectList:
            for Package in Pa.PackageList:
                PcdList = Package.Pcds.values()
                PcdList.sort(lambda x, y: cmp(int(x.TokenValue, 0), int(y.TokenValue, 0)))
                Count = 0
                while (Count < len(PcdList) - 1) :
                    Item = PcdList[Count]
                    ItemNext = PcdList[Count + 1]
                    #
                    # Make sure in the same token space the TokenValue should be unique
                    #
                    if (int(Item.TokenValue, 0) == int(ItemNext.TokenValue, 0)):
                        SameTokenValuePcdList = []
                        SameTokenValuePcdList.append(Item)
                        SameTokenValuePcdList.append(ItemNext)
                        RemainPcdListLength = len(PcdList) - Count - 2
                        for ValueSameCount in range(RemainPcdListLength):
                            if int(PcdList[len(PcdList) - RemainPcdListLength + ValueSameCount].TokenValue, 0) == int(Item.TokenValue, 0):
                                SameTokenValuePcdList.append(PcdList[len(PcdList) - RemainPcdListLength + ValueSameCount])
                            else:
                                break;
                        #
                        # Sort same token value PCD list with TokenGuid and TokenCName
                        #
                        SameTokenValuePcdList.sort(lambda x, y: cmp("%s.%s" % (x.TokenSpaceGuidCName, x.TokenCName), "%s.%s" % (y.TokenSpaceGuidCName, y.TokenCName)))
                        SameTokenValuePcdListCount = 0
                        while (SameTokenValuePcdListCount < len(SameTokenValuePcdList) - 1):
                            Flag = False
                            TemListItem = SameTokenValuePcdList[SameTokenValuePcdListCount]
                            TemListItemNext = SameTokenValuePcdList[SameTokenValuePcdListCount + 1]

                            if (TemListItem.TokenSpaceGuidCName == TemListItemNext.TokenSpaceGuidCName) and (TemListItem.TokenCName != TemListItemNext.TokenCName):
                                for PcdItem in GlobalData.MixedPcd:
                                    if (TemListItem.TokenCName, TemListItem.TokenSpaceGuidCName) in GlobalData.MixedPcd[PcdItem] or \
                                        (TemListItemNext.TokenCName, TemListItemNext.TokenSpaceGuidCName) in GlobalData.MixedPcd[PcdItem]:
                                        Flag = True
                                if not Flag:
                                    EdkLogger.error(
                                                'build',
                                                FORMAT_INVALID,
                                                "The TokenValue [%s] of PCD [%s.%s] is conflict with: [%s.%s] in %s"\
                                                % (TemListItem.TokenValue, TemListItem.TokenSpaceGuidCName, TemListItem.TokenCName, TemListItemNext.TokenSpaceGuidCName, TemListItemNext.TokenCName, Package),
                                                ExtraData=None
                                                )
                            SameTokenValuePcdListCount += 1
                        Count += SameTokenValuePcdListCount
                    Count += 1

                PcdList = Package.Pcds.values()
                PcdList.sort(lambda x, y: cmp("%s.%s" % (x.TokenSpaceGuidCName, x.TokenCName), "%s.%s" % (y.TokenSpaceGuidCName, y.TokenCName)))
                Count = 0
                while (Count < len(PcdList) - 1) :
                    Item = PcdList[Count]
                    ItemNext = PcdList[Count + 1]
                    #
                    # Check PCDs with same TokenSpaceGuidCName.TokenCName have same token value as well.
                    #
                    if (Item.TokenSpaceGuidCName == ItemNext.TokenSpaceGuidCName) and (Item.TokenCName == ItemNext.TokenCName) and (int(Item.TokenValue, 0) != int(ItemNext.TokenValue, 0)):
                        EdkLogger.error(
                                    'build',
                                    FORMAT_INVALID,
                                    "The TokenValue [%s] of PCD [%s.%s] in %s defined in two places should be same as well."\
                                    % (Item.TokenValue, Item.TokenSpaceGuidCName, Item.TokenCName, Package),
                                    ExtraData=None
                                    )
                    Count += 1
    ## Generate fds command
    def _GenFdsCommand(self):
        return (GenMake.TopLevelMakefile(self)._TEMPLATE_.Replace(GenMake.TopLevelMakefile(self)._TemplateDict)).strip()

    ## Create makefile for the platform and modules in it
    #
    #   @param      CreateDepsMakeFile      Flag indicating if the makefile for
    #                                       modules will be created as well
    #
    def CreateMakeFile(self, CreateDepsMakeFile=False):
        if not CreateDepsMakeFile:
            return
        for Pa in self.AutoGenObjectList:
            Pa.CreateMakeFile(True)

    ## Create autogen code for platform and modules
    #
    #  Since there's no autogen code for platform, this method will do nothing
    #  if CreateModuleCodeFile is set to False.
    #
    #   @param      CreateDepsCodeFile      Flag indicating if creating module's
    #                                       autogen code file or not
    #
    def CreateCodeFile(self, CreateDepsCodeFile=False):
        if not CreateDepsCodeFile:
            return
        for Pa in self.AutoGenObjectList:
            Pa.CreateCodeFile(True)

    ## Create AsBuilt INF file the platform
    #
    def CreateAsBuiltInf(self):
        return

    Name                = property(_GetName)
    Guid                = property(_GetGuid)
    Version             = property(_GetVersion)
    OutputDir           = property(_GetOutputDir)

    ToolDefinition      = property(_GetToolDefinition)       # toolcode : tool path

    BuildDir            = property(_GetBuildDir)
    FvDir               = property(_GetFvDir)
    MakeFileDir         = property(_GetMakeFileDir)
    BuildCommand        = property(_GetBuildCommand)
    GenFdsCommand       = property(_GenFdsCommand)

## AutoGen class for platform
#
#  PlatformAutoGen class will process the original information in platform
#  file in order to generate makefile for platform.
#
class PlatformAutoGen(AutoGen):
    # call super().__init__ then call the worker function with different parameter count
    def __init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):
        if not hasattr(self, "_Init"):
            super(PlatformAutoGen, self).__init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)
            self._InitWorker(Workspace, MetaFile, Target, Toolchain, Arch)
            self._Init = True
    #
    # Used to store all PCDs for both PEI and DXE phase, in order to generate
    # correct PCD database
    #
    _DynaPcdList_ = []
    _NonDynaPcdList_ = []
    _PlatformPcds = {}

    #
    # The priority list while override build option
    #
    PrioList = {"0x11111"  : 16,     #  TARGET_TOOLCHAIN_ARCH_COMMANDTYPE_ATTRIBUTE (Highest)
                "0x01111"  : 15,     #  ******_TOOLCHAIN_ARCH_COMMANDTYPE_ATTRIBUTE
                "0x10111"  : 14,     #  TARGET_*********_ARCH_COMMANDTYPE_ATTRIBUTE
                "0x00111"  : 13,     #  ******_*********_ARCH_COMMANDTYPE_ATTRIBUTE
                "0x11011"  : 12,     #  TARGET_TOOLCHAIN_****_COMMANDTYPE_ATTRIBUTE
                "0x01011"  : 11,     #  ******_TOOLCHAIN_****_COMMANDTYPE_ATTRIBUTE
                "0x10011"  : 10,     #  TARGET_*********_****_COMMANDTYPE_ATTRIBUTE
                "0x00011"  : 9,      #  ******_*********_****_COMMANDTYPE_ATTRIBUTE
                "0x11101"  : 8,      #  TARGET_TOOLCHAIN_ARCH_***********_ATTRIBUTE
                "0x01101"  : 7,      #  ******_TOOLCHAIN_ARCH_***********_ATTRIBUTE
                "0x10101"  : 6,      #  TARGET_*********_ARCH_***********_ATTRIBUTE
                "0x00101"  : 5,      #  ******_*********_ARCH_***********_ATTRIBUTE
                "0x11001"  : 4,      #  TARGET_TOOLCHAIN_****_***********_ATTRIBUTE
                "0x01001"  : 3,      #  ******_TOOLCHAIN_****_***********_ATTRIBUTE
                "0x10001"  : 2,      #  TARGET_*********_****_***********_ATTRIBUTE
                "0x00001"  : 1}      #  ******_*********_****_***********_ATTRIBUTE (Lowest)

    ## Initialize PlatformAutoGen
    #
    #
    #   @param      Workspace       WorkspaceAutoGen object
    #   @param      PlatformFile    Platform file (DSC file)
    #   @param      Target          Build target (DEBUG, RELEASE)
    #   @param      Toolchain       Name of tool chain
    #   @param      Arch            arch of the platform supports
    #
    def _InitWorker(self, Workspace, PlatformFile, Target, Toolchain, Arch):
        EdkLogger.debug(EdkLogger.DEBUG_9, "AutoGen platform [%s] [%s]" % (PlatformFile, Arch))
        GlobalData.gProcessingFile = "%s [%s, %s, %s]" % (PlatformFile, Arch, Toolchain, Target)

        self.MetaFile = PlatformFile
        self.Workspace = Workspace
        self.WorkspaceDir = Workspace.WorkspaceDir
        self.ToolChain = Toolchain
        self.BuildTarget = Target
        self.Arch = Arch
        self.SourceDir = PlatformFile.SubDir
        self.SourceOverrideDir = None
        self.FdTargetList = self.Workspace.FdTargetList
        self.FvTargetList = self.Workspace.FvTargetList
        self.AllPcdList = []
        # get the original module/package/platform objects
        self.BuildDatabase = Workspace.BuildDatabase
        self.DscBuildDataObj = Workspace.Platform
        self._GuidDict = Workspace._GuidDict

        # flag indicating if the makefile/C-code file has been created or not
        self.IsMakeFileCreated  = False
        self.IsCodeFileCreated  = False

        self._Platform   = None
        self._Name       = None
        self._Guid       = None
        self._Version    = None

        self._BuildRule = None
        self._SourceDir = None
        self._BuildDir = None
        self._OutputDir = None
        self._FvDir = None
        self._MakeFileDir = None
        self._FdfFile = None

        self._PcdTokenNumber = None    # (TokenCName, TokenSpaceGuidCName) : GeneratedTokenNumber
        self._DynamicPcdList = None    # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]
        self._NonDynamicPcdList = None # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]
        self._NonDynamicPcdDict = {}

        self._ToolDefinitions = None
        self._ToolDefFile = None          # toolcode : tool path
        self._ToolChainFamily = None
        self._BuildRuleFamily = None
        self._BuildOption = None          # toolcode : option
        self._EdkBuildOption = None       # edktoolcode : option
        self._EdkIIBuildOption = None     # edkiitoolcode : option
        self._PackageList = None
        self._ModuleAutoGenList  = None
        self._LibraryAutoGenList = None
        self._BuildCommand = None
        self._AsBuildInfList = []
        self._AsBuildModuleList = []

        self.VariableInfo = None

        if GlobalData.gFdfParser is not None:
            self._AsBuildInfList = GlobalData.gFdfParser.Profile.InfList
            for Inf in self._AsBuildInfList:
                InfClass = PathClass(NormPath(Inf), GlobalData.gWorkspace, self.Arch)
                M = self.BuildDatabase[InfClass, self.Arch, self.BuildTarget, self.ToolChain]
                if not M.IsSupportedArch:
                    continue
                self._AsBuildModuleList.append(InfClass)
        # get library/modules for build
        self.LibraryBuildDirectoryList = []
        self.ModuleBuildDirectoryList = []

        return True

    def __repr__(self):
        return "%s [%s]" % (self.MetaFile, self.Arch)

    ## Create autogen code for platform and modules
    #
    #  Since there's no autogen code for platform, this method will do nothing
    #  if CreateModuleCodeFile is set to False.
    #
    #   @param      CreateModuleCodeFile    Flag indicating if creating module's
    #                                       autogen code file or not
    #
    def CreateCodeFile(self, CreateModuleCodeFile=False):
        # only module has code to be greated, so do nothing if CreateModuleCodeFile is False
        if self.IsCodeFileCreated or not CreateModuleCodeFile:
            return

        for Ma in self.ModuleAutoGenList:
            Ma.CreateCodeFile(True)

        # don't do this twice
        self.IsCodeFileCreated = True

    ## Generate Fds Command
    def _GenFdsCommand(self):
        return self.Workspace.GenFdsCommand

    ## Create makefile for the platform and mdoules in it
    #
    #   @param      CreateModuleMakeFile    Flag indicating if the makefile for
    #                                       modules will be created as well
    #
    def CreateMakeFile(self, CreateModuleMakeFile=False, FfsCommand = {}):
        if CreateModuleMakeFile:
            for ModuleFile in self.Platform.Modules:
                Ma = ModuleAutoGen(self.Workspace, ModuleFile, self.BuildTarget,
                                   self.ToolChain, self.Arch, self.MetaFile)
                if (ModuleFile.File, self.Arch) in FfsCommand:
                    Ma.CreateMakeFile(True, FfsCommand[ModuleFile.File, self.Arch])
                else:
                    Ma.CreateMakeFile(True)
                #Ma.CreateAsBuiltInf()

        # no need to create makefile for the platform more than once
        if self.IsMakeFileCreated:
            return

        # create library/module build dirs for platform
        Makefile = GenMake.PlatformMakefile(self)
        self.LibraryBuildDirectoryList = Makefile.GetLibraryBuildDirectoryList()
        self.ModuleBuildDirectoryList = Makefile.GetModuleBuildDirectoryList()

        self.IsMakeFileCreated = True

    ## Deal with Shared FixedAtBuild Pcds
    #
    def CollectFixedAtBuildPcds(self):
        for LibAuto in self.LibraryAutoGenList:
            FixedAtBuildPcds = {}
            ShareFixedAtBuildPcdsSameValue = {}
            for Module in LibAuto.ReferenceModules:
                for Pcd in set(Module.FixedAtBuildPcds + LibAuto.FixedAtBuildPcds):
                    DefaultValue = Pcd.DefaultValue
                    # Cover the case: DSC component override the Pcd value and the Pcd only used in one Lib
                    if Pcd in Module.LibraryPcdList:
                        Index = Module.LibraryPcdList.index(Pcd)
                        DefaultValue = Module.LibraryPcdList[Index].DefaultValue
                    key = ".".join((Pcd.TokenSpaceGuidCName, Pcd.TokenCName))
                    if key not in FixedAtBuildPcds:
                        ShareFixedAtBuildPcdsSameValue[key] = True
                        FixedAtBuildPcds[key] = DefaultValue
                    else:
                        if FixedAtBuildPcds[key] != DefaultValue:
                            ShareFixedAtBuildPcdsSameValue[key] = False
            for Pcd in LibAuto.FixedAtBuildPcds:
                key = ".".join((Pcd.TokenSpaceGuidCName, Pcd.TokenCName))
                if (Pcd.TokenCName, Pcd.TokenSpaceGuidCName) not in self.NonDynamicPcdDict:
                    continue
                else:
                    DscPcd = self.NonDynamicPcdDict[(Pcd.TokenCName, Pcd.TokenSpaceGuidCName)]
                    if DscPcd.Type != TAB_PCDS_FIXED_AT_BUILD:
                        continue
                if key in ShareFixedAtBuildPcdsSameValue and ShareFixedAtBuildPcdsSameValue[key]:
                    LibAuto.ConstPcd[key] = FixedAtBuildPcds[key]

    def CollectVariables(self, DynamicPcdSet):

        VpdRegionSize = 0
        VpdRegionBase = 0
        if self.Workspace.FdfFile:
            FdDict = self.Workspace.FdfProfile.FdDict[GlobalData.gFdfParser.CurrentFdName]
            for FdRegion in FdDict.RegionList:
                for item in FdRegion.RegionDataList:
                    if self.Platform.VpdToolGuid.strip() and self.Platform.VpdToolGuid in item:
                        VpdRegionSize = FdRegion.Size
                        VpdRegionBase = FdRegion.Offset
                        break


        VariableInfo = VariableMgr(self.DscBuildDataObj._GetDefaultStores(), self.DscBuildDataObj._GetSkuIds())
        VariableInfo.SetVpdRegionMaxSize(VpdRegionSize)
        VariableInfo.SetVpdRegionOffset(VpdRegionBase)
        Index = 0
        for Pcd in DynamicPcdSet:
            pcdname = ".".join((Pcd.TokenSpaceGuidCName, Pcd.TokenCName))
            for SkuName in Pcd.SkuInfoList:
                Sku = Pcd.SkuInfoList[SkuName]
                SkuId = Sku.SkuId
                if SkuId is None or SkuId == '':
                    continue
                if len(Sku.VariableName) > 0:
                    VariableGuidStructure = Sku.VariableGuidValue
                    VariableGuid = GuidStructureStringToGuidString(VariableGuidStructure)
                    for StorageName in Sku.DefaultStoreDict:
                        VariableInfo.append_variable(var_info(Index, pcdname, StorageName, SkuName, StringToArray(Sku.VariableName), VariableGuid, Sku.VariableOffset, Sku.VariableAttribute, Sku.HiiDefaultValue, Sku.DefaultStoreDict[StorageName], Pcd.DatumType))
            Index += 1
        return VariableInfo

    def UpdateNVStoreMaxSize(self, OrgVpdFile):
        if self.VariableInfo:
            VpdMapFilePath = os.path.join(self.BuildDir, TAB_FV_DIRECTORY, "%s.map" % self.Platform.VpdToolGuid)
            PcdNvStoreDfBuffer = [item for item in self._DynamicPcdList if item.TokenCName == "PcdNvStoreDefaultValueBuffer" and item.TokenSpaceGuidCName == "gEfiMdeModulePkgTokenSpaceGuid"]

            if PcdNvStoreDfBuffer:
                if os.path.exists(VpdMapFilePath):
                    OrgVpdFile.Read(VpdMapFilePath)
                    PcdItems = OrgVpdFile.GetOffset(PcdNvStoreDfBuffer[0])
                    NvStoreOffset = PcdItems.values()[0].strip() if PcdItems else '0'
                else:
                    EdkLogger.error("build", FILE_READ_FAILURE, "Can not find VPD map file %s to fix up VPD offset." % VpdMapFilePath)

                NvStoreOffset = int(NvStoreOffset, 16) if NvStoreOffset.upper().startswith("0X") else int(NvStoreOffset)
                default_skuobj = PcdNvStoreDfBuffer[0].SkuInfoList.get(TAB_DEFAULT)
                maxsize = self.VariableInfo.VpdRegionSize  - NvStoreOffset if self.VariableInfo.VpdRegionSize else len(default_skuobj.DefaultValue.split(","))
                var_data = self.VariableInfo.PatchNVStoreDefaultMaxSize(maxsize)

                if var_data and default_skuobj:
                    default_skuobj.DefaultValue = var_data
                    PcdNvStoreDfBuffer[0].DefaultValue = var_data
                    PcdNvStoreDfBuffer[0].SkuInfoList.clear()
                    PcdNvStoreDfBuffer[0].SkuInfoList[TAB_DEFAULT] = default_skuobj
                    PcdNvStoreDfBuffer[0].MaxDatumSize = str(len(default_skuobj.DefaultValue.split(",")))

        return OrgVpdFile

    ## Collect dynamic PCDs
    #
    #  Gather dynamic PCDs list from each module and their settings from platform
    #  This interface should be invoked explicitly when platform action is created.
    #
    def CollectPlatformDynamicPcds(self):

        for key in self.Platform.Pcds:
            for SinglePcd in GlobalData.MixedPcd:
                if (self.Platform.Pcds[key].TokenCName, self.Platform.Pcds[key].TokenSpaceGuidCName) == SinglePcd:
                    for item in GlobalData.MixedPcd[SinglePcd]:
                        Pcd_Type = item[0].split('_')[-1]
                        if (Pcd_Type == self.Platform.Pcds[key].Type) or (Pcd_Type == TAB_PCDS_DYNAMIC_EX and self.Platform.Pcds[key].Type in PCD_DYNAMIC_EX_TYPE_SET) or \
                           (Pcd_Type == TAB_PCDS_DYNAMIC and self.Platform.Pcds[key].Type in PCD_DYNAMIC_TYPE_SET):
                            Value = self.Platform.Pcds[key]
                            Value.TokenCName = self.Platform.Pcds[key].TokenCName + '_' + Pcd_Type
                            if len(key) == 2:
                                newkey = (Value.TokenCName, key[1])
                            elif len(key) == 3:
                                newkey = (Value.TokenCName, key[1], key[2])
                            del self.Platform.Pcds[key]
                            self.Platform.Pcds[newkey] = Value
                            break
                    break

        # for gathering error information
        NoDatumTypePcdList = set()
        FdfModuleList = []
        for InfName in self._AsBuildInfList:
            InfName = mws.join(self.WorkspaceDir, InfName)
            FdfModuleList.append(os.path.normpath(InfName))
        for F in self.Platform.Modules.keys():
            M = ModuleAutoGen(self.Workspace, F, self.BuildTarget, self.ToolChain, self.Arch, self.MetaFile)
            #GuidValue.update(M.Guids)

            self.Platform.Modules[F].M = M

            for PcdFromModule in M.ModulePcdList + M.LibraryPcdList:
                # make sure that the "VOID*" kind of datum has MaxDatumSize set
                if PcdFromModule.DatumType == TAB_VOID and not PcdFromModule.MaxDatumSize:
                    NoDatumTypePcdList.add("%s.%s [%s]" % (PcdFromModule.TokenSpaceGuidCName, PcdFromModule.TokenCName, F))

                # Check the PCD from Binary INF or Source INF
                if M.IsBinaryModule == True:
                    PcdFromModule.IsFromBinaryInf = True

                # Check the PCD from DSC or not
                PcdFromModule.IsFromDsc = (PcdFromModule.TokenCName, PcdFromModule.TokenSpaceGuidCName) in self.Platform.Pcds

                if PcdFromModule.Type in PCD_DYNAMIC_TYPE_SET or PcdFromModule.Type in PCD_DYNAMIC_EX_TYPE_SET:
                    if F.Path not in FdfModuleList:
                        # If one of the Source built modules listed in the DSC is not listed
                        # in FDF modules, and the INF lists a PCD can only use the PcdsDynamic
                        # access method (it is only listed in the DEC file that declares the
                        # PCD as PcdsDynamic), then build tool will report warning message
                        # notify the PI that they are attempting to build a module that must
                        # be included in a flash image in order to be functional. These Dynamic
                        # PCD will not be added into the Database unless it is used by other
                        # modules that are included in the FDF file.
                        if PcdFromModule.Type in PCD_DYNAMIC_TYPE_SET and \
                            PcdFromModule.IsFromBinaryInf == False:
                            # Print warning message to let the developer make a determine.
                            continue
                        # If one of the Source built modules listed in the DSC is not listed in
                        # FDF modules, and the INF lists a PCD can only use the PcdsDynamicEx
                        # access method (it is only listed in the DEC file that declares the
                        # PCD as PcdsDynamicEx), then DO NOT break the build; DO NOT add the
                        # PCD to the Platform's PCD Database.
                        if PcdFromModule.Type in PCD_DYNAMIC_EX_TYPE_SET:
                            continue
                    #
                    # If a dynamic PCD used by a PEM module/PEI module & DXE module,
                    # it should be stored in Pcd PEI database, If a dynamic only
                    # used by DXE module, it should be stored in DXE PCD database.
                    # The default Phase is DXE
                    #
                    if M.ModuleType in SUP_MODULE_SET_PEI:
                        PcdFromModule.Phase = "PEI"
                    if PcdFromModule not in self._DynaPcdList_:
                        self._DynaPcdList_.append(PcdFromModule)
                    elif PcdFromModule.Phase == 'PEI':
                        # overwrite any the same PCD existing, if Phase is PEI
                        Index = self._DynaPcdList_.index(PcdFromModule)
                        self._DynaPcdList_[Index] = PcdFromModule
                elif PcdFromModule not in self._NonDynaPcdList_:
                    self._NonDynaPcdList_.append(PcdFromModule)
                elif PcdFromModule in self._NonDynaPcdList_ and PcdFromModule.IsFromBinaryInf == True:
                    Index = self._NonDynaPcdList_.index(PcdFromModule)
                    if self._NonDynaPcdList_[Index].IsFromBinaryInf == False:
                        #The PCD from Binary INF will override the same one from source INF
                        self._NonDynaPcdList_.remove (self._NonDynaPcdList_[Index])
                        PcdFromModule.Pending = False
                        self._NonDynaPcdList_.append (PcdFromModule)
        DscModuleSet = {os.path.normpath(ModuleInf.Path) for ModuleInf in self.Platform.Modules}
        # add the PCD from modules that listed in FDF but not in DSC to Database
        for InfName in FdfModuleList:
            if InfName not in DscModuleSet:
                InfClass = PathClass(InfName)
                M = self.BuildDatabase[InfClass, self.Arch, self.BuildTarget, self.ToolChain]
                # If a module INF in FDF but not in current arch's DSC module list, it must be module (either binary or source)
                # for different Arch. PCDs in source module for different Arch is already added before, so skip the source module here.
                # For binary module, if in current arch, we need to list the PCDs into database.
                if not M.IsSupportedArch:
                    continue
                # Override the module PCD setting by platform setting
                ModulePcdList = self.ApplyPcdSetting(M, M.Pcds)
                for PcdFromModule in ModulePcdList:
                    PcdFromModule.IsFromBinaryInf = True
                    PcdFromModule.IsFromDsc = False
                    # Only allow the DynamicEx and Patchable PCD in AsBuild INF
                    if PcdFromModule.Type not in PCD_DYNAMIC_EX_TYPE_SET and PcdFromModule.Type not in TAB_PCDS_PATCHABLE_IN_MODULE:
                        EdkLogger.error("build", AUTOGEN_ERROR, "PCD setting error",
                                        File=self.MetaFile,
                                        ExtraData="\n\tExisted %s PCD %s in:\n\t\t%s\n"
                                        % (PcdFromModule.Type, PcdFromModule.TokenCName, InfName))
                    # make sure that the "VOID*" kind of datum has MaxDatumSize set
                    if PcdFromModule.DatumType == TAB_VOID and not PcdFromModule.MaxDatumSize:
                        NoDatumTypePcdList.add("%s.%s [%s]" % (PcdFromModule.TokenSpaceGuidCName, PcdFromModule.TokenCName, InfName))
                    if M.ModuleType in SUP_MODULE_SET_PEI:
                        PcdFromModule.Phase = "PEI"
                    if PcdFromModule not in self._DynaPcdList_ and PcdFromModule.Type in PCD_DYNAMIC_EX_TYPE_SET:
                        self._DynaPcdList_.append(PcdFromModule)
                    elif PcdFromModule not in self._NonDynaPcdList_ and PcdFromModule.Type in TAB_PCDS_PATCHABLE_IN_MODULE:
                        self._NonDynaPcdList_.append(PcdFromModule)
                    if PcdFromModule in self._DynaPcdList_ and PcdFromModule.Phase == 'PEI' and PcdFromModule.Type in PCD_DYNAMIC_EX_TYPE_SET:
                        # Overwrite the phase of any the same PCD existing, if Phase is PEI.
                        # It is to solve the case that a dynamic PCD used by a PEM module/PEI
                        # module & DXE module at a same time.
                        # Overwrite the type of the PCDs in source INF by the type of AsBuild
                        # INF file as DynamicEx.
                        Index = self._DynaPcdList_.index(PcdFromModule)
                        self._DynaPcdList_[Index].Phase = PcdFromModule.Phase
                        self._DynaPcdList_[Index].Type = PcdFromModule.Type
        for PcdFromModule in self._NonDynaPcdList_:
            # If a PCD is not listed in the DSC file, but binary INF files used by
            # this platform all (that use this PCD) list the PCD in a [PatchPcds]
            # section, AND all source INF files used by this platform the build
            # that use the PCD list the PCD in either a [Pcds] or [PatchPcds]
            # section, then the tools must NOT add the PCD to the Platform's PCD
            # Database; the build must assign the access method for this PCD as
            # PcdsPatchableInModule.
            if PcdFromModule not in self._DynaPcdList_:
                continue
            Index = self._DynaPcdList_.index(PcdFromModule)
            if PcdFromModule.IsFromDsc == False and \
                PcdFromModule.Type in TAB_PCDS_PATCHABLE_IN_MODULE and \
                PcdFromModule.IsFromBinaryInf == True and \
                self._DynaPcdList_[Index].IsFromBinaryInf == False:
                Index = self._DynaPcdList_.index(PcdFromModule)
                self._DynaPcdList_.remove (self._DynaPcdList_[Index])

        # print out error information and break the build, if error found
        if len(NoDatumTypePcdList) > 0:
            NoDatumTypePcdListString = "\n\t\t".join(NoDatumTypePcdList)
            EdkLogger.error("build", AUTOGEN_ERROR, "PCD setting error",
                            File=self.MetaFile,
                            ExtraData="\n\tPCD(s) without MaxDatumSize:\n\t\t%s\n"
                                      % NoDatumTypePcdListString)
        self._NonDynamicPcdList = self._NonDynaPcdList_
        self._DynamicPcdList = self._DynaPcdList_
        #
        # Sort dynamic PCD list to:
        # 1) If PCD's datum type is VOID* and value is unicode string which starts with L, the PCD item should
        #    try to be put header of dynamicd List
        # 2) If PCD is HII type, the PCD item should be put after unicode type PCD
        #
        # The reason of sorting is make sure the unicode string is in double-byte alignment in string table.
        #
        UnicodePcdArray = set()
        HiiPcdArray     = set()
        OtherPcdArray   = set()
        VpdPcdDict      = {}
        VpdFile               = VpdInfoFile.VpdInfoFile()
        NeedProcessVpdMapFile = False

        for pcd in self.Platform.Pcds:
            if pcd not in self._PlatformPcds:
                self._PlatformPcds[pcd] = self.Platform.Pcds[pcd]

        for item in self._PlatformPcds:
            if self._PlatformPcds[item].DatumType and self._PlatformPcds[item].DatumType not in [TAB_UINT8, TAB_UINT16, TAB_UINT32, TAB_UINT64, TAB_VOID, "BOOLEAN"]:
                self._PlatformPcds[item].DatumType = TAB_VOID

        if (self.Workspace.ArchList[-1] == self.Arch):
            for Pcd in self._DynamicPcdList:
                # just pick the a value to determine whether is unicode string type
                Sku = Pcd.SkuInfoList.values()[0]
                Sku.VpdOffset = Sku.VpdOffset.strip()

                if Pcd.DatumType not in [TAB_UINT8, TAB_UINT16, TAB_UINT32, TAB_UINT64, TAB_VOID, "BOOLEAN"]:
                    Pcd.DatumType = TAB_VOID

                    # if found PCD which datum value is unicode string the insert to left size of UnicodeIndex
                    # if found HII type PCD then insert to right of UnicodeIndex
                if Pcd.Type in [TAB_PCDS_DYNAMIC_VPD, TAB_PCDS_DYNAMIC_EX_VPD]:
                    VpdPcdDict[(Pcd.TokenCName, Pcd.TokenSpaceGuidCName)] = Pcd

            #Collect DynamicHii PCD values and assign it to DynamicExVpd PCD gEfiMdeModulePkgTokenSpaceGuid.PcdNvStoreDefaultValueBuffer
            PcdNvStoreDfBuffer = VpdPcdDict.get(("PcdNvStoreDefaultValueBuffer", "gEfiMdeModulePkgTokenSpaceGuid"))
            if PcdNvStoreDfBuffer:
                self.VariableInfo = self.CollectVariables(self._DynamicPcdList)
                vardump = self.VariableInfo.dump()
                if vardump:
                    PcdNvStoreDfBuffer.DefaultValue = vardump
                    for skuname in PcdNvStoreDfBuffer.SkuInfoList:
                        PcdNvStoreDfBuffer.SkuInfoList[skuname].DefaultValue = vardump
                        PcdNvStoreDfBuffer.MaxDatumSize = str(len(vardump.split(",")))

            PlatformPcds = sorted(self._PlatformPcds.keys())
            #
            # Add VPD type PCD into VpdFile and determine whether the VPD PCD need to be fixed up.
            #
            VpdSkuMap = {}
            for PcdKey in PlatformPcds:
                Pcd = self._PlatformPcds[PcdKey]
                if Pcd.Type in [TAB_PCDS_DYNAMIC_VPD, TAB_PCDS_DYNAMIC_EX_VPD] and \
                   PcdKey in VpdPcdDict:
                    Pcd = VpdPcdDict[PcdKey]
                    SkuValueMap = {}
                    DefaultSku = Pcd.SkuInfoList.get(TAB_DEFAULT)
                    if DefaultSku:
                        PcdValue = DefaultSku.DefaultValue
                        if PcdValue not in SkuValueMap:
                            SkuValueMap[PcdValue] = []
                            VpdFile.Add(Pcd, TAB_DEFAULT, DefaultSku.VpdOffset)
                        SkuValueMap[PcdValue].append(DefaultSku)

                    for (SkuName, Sku) in Pcd.SkuInfoList.items():
                        Sku.VpdOffset = Sku.VpdOffset.strip()
                        PcdValue = Sku.DefaultValue
                        if PcdValue == "":
                            PcdValue  = Pcd.DefaultValue
                        if Sku.VpdOffset != '*':
                            if PcdValue.startswith("{"):
                                Alignment = 8
                            elif PcdValue.startswith("L"):
                                Alignment = 2
                            else:
                                Alignment = 1
                            try:
                                VpdOffset = int(Sku.VpdOffset)
                            except:
                                try:
                                    VpdOffset = int(Sku.VpdOffset, 16)
                                except:
                                    EdkLogger.error("build", FORMAT_INVALID, "Invalid offset value %s for PCD %s.%s." % (Sku.VpdOffset, Pcd.TokenSpaceGuidCName, Pcd.TokenCName))
                            if VpdOffset % Alignment != 0:
                                if PcdValue.startswith("{"):
                                    EdkLogger.warn("build", "The offset value of PCD %s.%s is not 8-byte aligned!" %(Pcd.TokenSpaceGuidCName, Pcd.TokenCName), File=self.MetaFile)
                                else:
                                    EdkLogger.error("build", FORMAT_INVALID, 'The offset value of PCD %s.%s should be %s-byte aligned.' % (Pcd.TokenSpaceGuidCName, Pcd.TokenCName, Alignment))
                        if PcdValue not in SkuValueMap:
                            SkuValueMap[PcdValue] = []
                            VpdFile.Add(Pcd, SkuName, Sku.VpdOffset)
                        SkuValueMap[PcdValue].append(Sku)
                        # if the offset of a VPD is *, then it need to be fixed up by third party tool.
                        if not NeedProcessVpdMapFile and Sku.VpdOffset == "*":
                            NeedProcessVpdMapFile = True
                            if self.Platform.VpdToolGuid is None or self.Platform.VpdToolGuid == '':
                                EdkLogger.error("Build", FILE_NOT_FOUND, \
                                                "Fail to find third-party BPDG tool to process VPD PCDs. BPDG Guid tool need to be defined in tools_def.txt and VPD_TOOL_GUID need to be provided in DSC file.")

                    VpdSkuMap[PcdKey] = SkuValueMap
            #
            # Fix the PCDs define in VPD PCD section that never referenced by module.
            # An example is PCD for signature usage.
            #
            for DscPcd in PlatformPcds:
                DscPcdEntry = self._PlatformPcds[DscPcd]
                if DscPcdEntry.Type in [TAB_PCDS_DYNAMIC_VPD, TAB_PCDS_DYNAMIC_EX_VPD]:
                    if not (self.Platform.VpdToolGuid is None or self.Platform.VpdToolGuid == ''):
                        FoundFlag = False
                        for VpdPcd in VpdFile._VpdArray:
                            # This PCD has been referenced by module
                            if (VpdPcd.TokenSpaceGuidCName == DscPcdEntry.TokenSpaceGuidCName) and \
                               (VpdPcd.TokenCName == DscPcdEntry.TokenCName):
                                    FoundFlag = True

                        # Not found, it should be signature
                        if not FoundFlag :
                            # just pick the a value to determine whether is unicode string type
                            SkuValueMap = {}
                            SkuObjList = DscPcdEntry.SkuInfoList.items()
                            DefaultSku = DscPcdEntry.SkuInfoList.get(TAB_DEFAULT)
                            if DefaultSku:
                                defaultindex = SkuObjList.index((TAB_DEFAULT, DefaultSku))
                                SkuObjList[0], SkuObjList[defaultindex] = SkuObjList[defaultindex], SkuObjList[0]
                            for (SkuName, Sku) in SkuObjList:
                                Sku.VpdOffset = Sku.VpdOffset.strip()

                                # Need to iterate DEC pcd information to get the value & datumtype
                                for eachDec in self.PackageList:
                                    for DecPcd in eachDec.Pcds:
                                        DecPcdEntry = eachDec.Pcds[DecPcd]
                                        if (DecPcdEntry.TokenSpaceGuidCName == DscPcdEntry.TokenSpaceGuidCName) and \
                                           (DecPcdEntry.TokenCName == DscPcdEntry.TokenCName):
                                            # Print warning message to let the developer make a determine.
                                            EdkLogger.warn("build", "Unreferenced vpd pcd used!",
                                                            File=self.MetaFile, \
                                                            ExtraData = "PCD: %s.%s used in the DSC file %s is unreferenced." \
                                                            %(DscPcdEntry.TokenSpaceGuidCName, DscPcdEntry.TokenCName, self.Platform.MetaFile.Path))

                                            DscPcdEntry.DatumType    = DecPcdEntry.DatumType
                                            DscPcdEntry.DefaultValue = DecPcdEntry.DefaultValue
                                            DscPcdEntry.TokenValue = DecPcdEntry.TokenValue
                                            DscPcdEntry.TokenSpaceGuidValue = eachDec.Guids[DecPcdEntry.TokenSpaceGuidCName]
                                            # Only fix the value while no value provided in DSC file.
                                            if not Sku.DefaultValue:
                                                DscPcdEntry.SkuInfoList[DscPcdEntry.SkuInfoList.keys()[0]].DefaultValue = DecPcdEntry.DefaultValue

                                if DscPcdEntry not in self._DynamicPcdList:
                                    self._DynamicPcdList.append(DscPcdEntry)
                                Sku.VpdOffset = Sku.VpdOffset.strip()
                                PcdValue = Sku.DefaultValue
                                if PcdValue == "":
                                    PcdValue  = DscPcdEntry.DefaultValue
                                if Sku.VpdOffset != '*':
                                    if PcdValue.startswith("{"):
                                        Alignment = 8
                                    elif PcdValue.startswith("L"):
                                        Alignment = 2
                                    else:
                                        Alignment = 1
                                    try:
                                        VpdOffset = int(Sku.VpdOffset)
                                    except:
                                        try:
                                            VpdOffset = int(Sku.VpdOffset, 16)
                                        except:
                                            EdkLogger.error("build", FORMAT_INVALID, "Invalid offset value %s for PCD %s.%s." % (Sku.VpdOffset, DscPcdEntry.TokenSpaceGuidCName, DscPcdEntry.TokenCName))
                                    if VpdOffset % Alignment != 0:
                                        if PcdValue.startswith("{"):
                                            EdkLogger.warn("build", "The offset value of PCD %s.%s is not 8-byte aligned!" %(DscPcdEntry.TokenSpaceGuidCName, DscPcdEntry.TokenCName), File=self.MetaFile)
                                        else:
                                            EdkLogger.error("build", FORMAT_INVALID, 'The offset value of PCD %s.%s should be %s-byte aligned.' % (DscPcdEntry.TokenSpaceGuidCName, DscPcdEntry.TokenCName, Alignment))
                                if PcdValue not in SkuValueMap:
                                    SkuValueMap[PcdValue] = []
                                    VpdFile.Add(DscPcdEntry, SkuName, Sku.VpdOffset)
                                SkuValueMap[PcdValue].append(Sku)
                                if not NeedProcessVpdMapFile and Sku.VpdOffset == "*":
                                    NeedProcessVpdMapFile = True
                            if DscPcdEntry.DatumType == TAB_VOID and PcdValue.startswith("L"):
                                UnicodePcdArray.add(DscPcdEntry)
                            elif len(Sku.VariableName) > 0:
                                HiiPcdArray.add(DscPcdEntry)
                            else:
                                OtherPcdArray.add(DscPcdEntry)

                                # if the offset of a VPD is *, then it need to be fixed up by third party tool.
                            VpdSkuMap[DscPcd] = SkuValueMap
            if (self.Platform.FlashDefinition is None or self.Platform.FlashDefinition == '') and \
               VpdFile.GetCount() != 0:
                EdkLogger.error("build", ATTRIBUTE_NOT_AVAILABLE,
                                "Fail to get FLASH_DEFINITION definition in DSC file %s which is required when DSC contains VPD PCD." % str(self.Platform.MetaFile))

            if VpdFile.GetCount() != 0:

                self.FixVpdOffset(VpdFile)

                self.FixVpdOffset(self.UpdateNVStoreMaxSize(VpdFile))

                # Process VPD map file generated by third party BPDG tool
                if NeedProcessVpdMapFile:
                    VpdMapFilePath = os.path.join(self.BuildDir, TAB_FV_DIRECTORY, "%s.map" % self.Platform.VpdToolGuid)
                    if os.path.exists(VpdMapFilePath):
                        VpdFile.Read(VpdMapFilePath)

                        # Fixup "*" offset
                        for pcd in VpdSkuMap:
                            vpdinfo = VpdFile.GetVpdInfo(pcd)
                            if vpdinfo is None:
                            # just pick the a value to determine whether is unicode string type
                                continue
                            for pcdvalue in VpdSkuMap[pcd]:
                                for sku in VpdSkuMap[pcd][pcdvalue]:
                                    for item in vpdinfo:
                                        if item[2] == pcdvalue:
                                            sku.VpdOffset = item[1]
                    else:
                        EdkLogger.error("build", FILE_READ_FAILURE, "Can not find VPD map file %s to fix up VPD offset." % VpdMapFilePath)

            # Delete the DynamicPcdList At the last time enter into this function
            for Pcd in self._DynamicPcdList:
                # just pick the a value to determine whether is unicode string type
                Sku = Pcd.SkuInfoList.values()[0]
                Sku.VpdOffset = Sku.VpdOffset.strip()

                if Pcd.DatumType not in [TAB_UINT8, TAB_UINT16, TAB_UINT32, TAB_UINT64, TAB_VOID, "BOOLEAN"]:
                    Pcd.DatumType = TAB_VOID

                PcdValue = Sku.DefaultValue
                if Pcd.DatumType == TAB_VOID and PcdValue.startswith("L"):
                    # if found PCD which datum value is unicode string the insert to left size of UnicodeIndex
                    UnicodePcdArray.add(Pcd)
                elif len(Sku.VariableName) > 0:
                    # if found HII type PCD then insert to right of UnicodeIndex
                    HiiPcdArray.add(Pcd)
                else:
                    OtherPcdArray.add(Pcd)
            del self._DynamicPcdList[:]
        self._DynamicPcdList.extend(list(UnicodePcdArray))
        self._DynamicPcdList.extend(list(HiiPcdArray))
        self._DynamicPcdList.extend(list(OtherPcdArray))
        allskuset = [(SkuName, Sku.SkuId) for pcd in self._DynamicPcdList for (SkuName, Sku) in pcd.SkuInfoList.items()]
        for pcd in self._DynamicPcdList:
            if len(pcd.SkuInfoList) == 1:
                for (SkuName, SkuId) in allskuset:
                    if type(SkuId) in (str, unicode) and eval(SkuId) == 0 or SkuId == 0:
                        continue
                    pcd.SkuInfoList[SkuName] = copy.deepcopy(pcd.SkuInfoList[TAB_DEFAULT])
                    pcd.SkuInfoList[SkuName].SkuId = SkuId
        self.AllPcdList = self._NonDynamicPcdList + self._DynamicPcdList

    def FixVpdOffset(self, VpdFile ):
        FvPath = os.path.join(self.BuildDir, TAB_FV_DIRECTORY)
        if not os.path.exists(FvPath):
            try:
                os.makedirs(FvPath)
            except:
                EdkLogger.error("build", FILE_WRITE_FAILURE, "Fail to create FV folder under %s" % self.BuildDir)

        VpdFilePath = os.path.join(FvPath, "%s.txt" % self.Platform.VpdToolGuid)

        if VpdFile.Write(VpdFilePath):
            # retrieve BPDG tool's path from tool_def.txt according to VPD_TOOL_GUID defined in DSC file.
            BPDGToolName = None
            for ToolDef in self.ToolDefinition.values():
                if TAB_GUID in ToolDef and ToolDef[TAB_GUID] == self.Platform.VpdToolGuid:
                    if "PATH" not in ToolDef:
                        EdkLogger.error("build", ATTRIBUTE_NOT_AVAILABLE, "PATH attribute was not provided for BPDG guid tool %s in tools_def.txt" % self.Platform.VpdToolGuid)
                    BPDGToolName = ToolDef["PATH"]
                    break
            # Call third party GUID BPDG tool.
            if BPDGToolName is not None:
                VpdInfoFile.CallExtenalBPDGTool(BPDGToolName, VpdFilePath)
            else:
                EdkLogger.error("Build", FILE_NOT_FOUND, "Fail to find third-party BPDG tool to process VPD PCDs. BPDG Guid tool need to be defined in tools_def.txt and VPD_TOOL_GUID need to be provided in DSC file.")

    ## Return the platform build data object
    def _GetPlatform(self):
        if self._Platform is None:
            self._Platform = self.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]
        return self._Platform

    ## Return platform name
    def _GetName(self):
        return self.Platform.PlatformName

    ## Return the meta file GUID
    def _GetGuid(self):
        return self.Platform.Guid

    ## Return the platform version
    def _GetVersion(self):
        return self.Platform.Version

    ## Return the FDF file name
    def _GetFdfFile(self):
        if self._FdfFile is None:
            if self.Workspace.FdfFile != "":
                self._FdfFile= mws.join(self.WorkspaceDir, self.Workspace.FdfFile)
            else:
                self._FdfFile = ''
        return self._FdfFile

    ## Return the build output directory platform specifies
    def _GetOutputDir(self):
        return self.Platform.OutputDirectory

    ## Return the directory to store all intermediate and final files built
    def _GetBuildDir(self):
        if self._BuildDir is None:
            if os.path.isabs(self.OutputDir):
                self._BuildDir = path.join(
                                            path.abspath(self.OutputDir),
                                            self.BuildTarget + "_" + self.ToolChain,
                                            )
            else:
                self._BuildDir = path.join(
                                            self.WorkspaceDir,
                                            self.OutputDir,
                                            self.BuildTarget + "_" + self.ToolChain,
                                            )
            GlobalData.gBuildDirectory = self._BuildDir
        return self._BuildDir

    ## Return directory of platform makefile
    #
    #   @retval     string  Makefile directory
    #
    def _GetMakeFileDir(self):
        if self._MakeFileDir is None:
            self._MakeFileDir = path.join(self.BuildDir, self.Arch)
        return self._MakeFileDir

    ## Return build command string
    #
    #   @retval     string  Build command string
    #
    def _GetBuildCommand(self):
        if self._BuildCommand is None:
            self._BuildCommand = []
            if "MAKE" in self.ToolDefinition and "PATH" in self.ToolDefinition["MAKE"]:
                self._BuildCommand += SplitOption(self.ToolDefinition["MAKE"]["PATH"])
                if "FLAGS" in self.ToolDefinition["MAKE"]:
                    NewOption = self.ToolDefinition["MAKE"]["FLAGS"].strip()
                    if NewOption != '':
                        self._BuildCommand += SplitOption(NewOption)
                if "MAKE" in self.EdkIIBuildOption:
                    if "FLAGS" in self.EdkIIBuildOption["MAKE"]:
                        Flags = self.EdkIIBuildOption["MAKE"]["FLAGS"]
                        if Flags.startswith('='):
                            self._BuildCommand = [self._BuildCommand[0]] + [Flags[1:]]
                        else:
                            self._BuildCommand.append(Flags)
        return self._BuildCommand

    ## Get tool chain definition
    #
    #  Get each tool defition for given tool chain from tools_def.txt and platform
    #
    def _GetToolDefinition(self):
        if self._ToolDefinitions is None:
            ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDictionary
            if TAB_TOD_DEFINES_COMMAND_TYPE not in self.Workspace.ToolDef.ToolsDefTxtDatabase:
                EdkLogger.error('build', RESOURCE_NOT_AVAILABLE, "No tools found in configuration",
                                ExtraData="[%s]" % self.MetaFile)
            self._ToolDefinitions = {}
            DllPathList = set()
            for Def in ToolDefinition:
                Target, Tag, Arch, Tool, Attr = Def.split("_")
                if Target != self.BuildTarget or Tag != self.ToolChain or Arch != self.Arch:
                    continue

                Value = ToolDefinition[Def]
                # don't record the DLL
                if Attr == "DLL":
                    DllPathList.add(Value)
                    continue

                if Tool not in self._ToolDefinitions:
                    self._ToolDefinitions[Tool] = {}
                self._ToolDefinitions[Tool][Attr] = Value

            ToolsDef = ''
            if GlobalData.gOptions.SilentMode and "MAKE" in self._ToolDefinitions:
                if "FLAGS" not in self._ToolDefinitions["MAKE"]:
                    self._ToolDefinitions["MAKE"]["FLAGS"] = ""
                self._ToolDefinitions["MAKE"]["FLAGS"] += " -s"
            MakeFlags = ''
            for Tool in self._ToolDefinitions:
                for Attr in self._ToolDefinitions[Tool]:
                    Value = self._ToolDefinitions[Tool][Attr]
                    if Tool in self.BuildOption and Attr in self.BuildOption[Tool]:
                        # check if override is indicated
                        if self.BuildOption[Tool][Attr].startswith('='):
                            Value = self.BuildOption[Tool][Attr][1:]
                        else:
                            if Attr != 'PATH':
                                Value += " " + self.BuildOption[Tool][Attr]
                            else:
                                Value = self.BuildOption[Tool][Attr]

                    if Attr == "PATH":
                        # Don't put MAKE definition in the file
                        if Tool != "MAKE":
                            ToolsDef += "%s = %s\n" % (Tool, Value)
                    elif Attr != "DLL":
                        # Don't put MAKE definition in the file
                        if Tool == "MAKE":
                            if Attr == "FLAGS":
                                MakeFlags = Value
                        else:
                            ToolsDef += "%s_%s = %s\n" % (Tool, Attr, Value)
                ToolsDef += "\n"

            SaveFileOnChange(self.ToolDefinitionFile, ToolsDef)
            for DllPath in DllPathList:
                os.environ["PATH"] = DllPath + os.pathsep + os.environ["PATH"]
            os.environ["MAKE_FLAGS"] = MakeFlags

        return self._ToolDefinitions

    ## Return the paths of tools
    def _GetToolDefFile(self):
        if self._ToolDefFile is None:
            self._ToolDefFile = os.path.join(self.MakeFileDir, "TOOLS_DEF." + self.Arch)
        return self._ToolDefFile

    ## Retrieve the toolchain family of given toolchain tag. Default to 'MSFT'.
    def _GetToolChainFamily(self):
        if self._ToolChainFamily is None:
            ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDatabase
            if TAB_TOD_DEFINES_FAMILY not in ToolDefinition \
               or self.ToolChain not in ToolDefinition[TAB_TOD_DEFINES_FAMILY] \
               or not ToolDefinition[TAB_TOD_DEFINES_FAMILY][self.ToolChain]:
                EdkLogger.verbose("No tool chain family found in configuration for %s. Default to MSFT." \
                                   % self.ToolChain)
                self._ToolChainFamily = "MSFT"
            else:
                self._ToolChainFamily = ToolDefinition[TAB_TOD_DEFINES_FAMILY][self.ToolChain]
        return self._ToolChainFamily

    def _GetBuildRuleFamily(self):
        if self._BuildRuleFamily is None:
            ToolDefinition = self.Workspace.ToolDef.ToolsDefTxtDatabase
            if TAB_TOD_DEFINES_BUILDRULEFAMILY not in ToolDefinition \
               or self.ToolChain not in ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY] \
               or not ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY][self.ToolChain]:
                EdkLogger.verbose("No tool chain family found in configuration for %s. Default to MSFT." \
                                   % self.ToolChain)
                self._BuildRuleFamily = "MSFT"
            else:
                self._BuildRuleFamily = ToolDefinition[TAB_TOD_DEFINES_BUILDRULEFAMILY][self.ToolChain]
        return self._BuildRuleFamily

    ## Return the build options specific for all modules in this platform
    def _GetBuildOptions(self):
        if self._BuildOption is None:
            self._BuildOption = self._ExpandBuildOption(self.Platform.BuildOptions)
        return self._BuildOption

    ## Return the build options specific for EDK modules in this platform
    def _GetEdkBuildOptions(self):
        if self._EdkBuildOption is None:
            self._EdkBuildOption = self._ExpandBuildOption(self.Platform.BuildOptions, EDK_NAME)
        return self._EdkBuildOption

    ## Return the build options specific for EDKII modules in this platform
    def _GetEdkIIBuildOptions(self):
        if self._EdkIIBuildOption is None:
            self._EdkIIBuildOption = self._ExpandBuildOption(self.Platform.BuildOptions, EDKII_NAME)
        return self._EdkIIBuildOption

    ## Parse build_rule.txt in Conf Directory.
    #
    #   @retval     BuildRule object
    #
    def _GetBuildRule(self):
        if self._BuildRule is None:
            BuildRuleFile = None
            if TAB_TAT_DEFINES_BUILD_RULE_CONF in self.Workspace.TargetTxt.TargetTxtDictionary:
                BuildRuleFile = self.Workspace.TargetTxt.TargetTxtDictionary[TAB_TAT_DEFINES_BUILD_RULE_CONF]
            if not BuildRuleFile:
                BuildRuleFile = gDefaultBuildRuleFile
            self._BuildRule = BuildRule(BuildRuleFile)
            if self._BuildRule._FileVersion == "":
                self._BuildRule._FileVersion = AutoGenReqBuildRuleVerNum
            else:
                if self._BuildRule._FileVersion < AutoGenReqBuildRuleVerNum :
                    # If Build Rule's version is less than the version number required by the tools, halting the build.
                    EdkLogger.error("build", AUTOGEN_ERROR,
                                    ExtraData="The version number [%s] of build_rule.txt is less than the version number required by the AutoGen.(the minimum required version number is [%s])"\
                                     % (self._BuildRule._FileVersion, AutoGenReqBuildRuleVerNum))

        return self._BuildRule

    ## Summarize the packages used by modules in this platform
    def _GetPackageList(self):
        if self._PackageList is None:
            self._PackageList = set()
            for La in self.LibraryAutoGenList:
                self._PackageList.update(La.DependentPackageList)
            for Ma in self.ModuleAutoGenList:
                self._PackageList.update(Ma.DependentPackageList)
            #Collect package set information from INF of FDF
            PkgSet = set()
            for ModuleFile in self._AsBuildModuleList:
                if ModuleFile in self.Platform.Modules:
                    continue
                ModuleData = self.BuildDatabase[ModuleFile, self.Arch, self.BuildTarget, self.ToolChain]
                PkgSet.update(ModuleData.Packages)
            self._PackageList = list(self._PackageList) + list (PkgSet)
        return self._PackageList

    def _GetNonDynamicPcdDict(self):
        if self._NonDynamicPcdDict:
            return self._NonDynamicPcdDict
        for Pcd in self.NonDynamicPcdList:
            self._NonDynamicPcdDict[(Pcd.TokenCName, Pcd.TokenSpaceGuidCName)] = Pcd
        return self._NonDynamicPcdDict

    ## Get list of non-dynamic PCDs
    def _GetNonDynamicPcdList(self):
        if self._NonDynamicPcdList is None:
            self.CollectPlatformDynamicPcds()
        return self._NonDynamicPcdList

    ## Get list of dynamic PCDs
    def _GetDynamicPcdList(self):
        if self._DynamicPcdList is None:
            self.CollectPlatformDynamicPcds()
        return self._DynamicPcdList

    ## Generate Token Number for all PCD
    def _GetPcdTokenNumbers(self):
        if self._PcdTokenNumber is None:
            self._PcdTokenNumber = OrderedDict()
            TokenNumber = 1
            #
            # Make the Dynamic and DynamicEx PCD use within different TokenNumber area.
            # Such as:
            #
            # Dynamic PCD:
            # TokenNumber 0 ~ 10
            # DynamicEx PCD:
            # TokeNumber 11 ~ 20
            #
            for Pcd in self.DynamicPcdList:
                if Pcd.Phase == "PEI" and Pcd.Type in PCD_DYNAMIC_TYPE_SET:
                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))
                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber
                    TokenNumber += 1

            for Pcd in self.DynamicPcdList:
                if Pcd.Phase == "PEI" and Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:
                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))
                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber
                    TokenNumber += 1

            for Pcd in self.DynamicPcdList:
                if Pcd.Phase == "DXE" and Pcd.Type in PCD_DYNAMIC_TYPE_SET:
                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))
                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber
                    TokenNumber += 1

            for Pcd in self.DynamicPcdList:
                if Pcd.Phase == "DXE" and Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:
                    EdkLogger.debug(EdkLogger.DEBUG_5, "%s %s (%s) -> %d" % (Pcd.TokenCName, Pcd.TokenSpaceGuidCName, Pcd.Phase, TokenNumber))
                    self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber
                    TokenNumber += 1

            for Pcd in self.NonDynamicPcdList:
                self._PcdTokenNumber[Pcd.TokenCName, Pcd.TokenSpaceGuidCName] = TokenNumber
                TokenNumber += 1
        return self._PcdTokenNumber

    ## Summarize ModuleAutoGen objects of all modules/libraries to be built for this platform
    def _GetAutoGenObjectList(self):
        self._ModuleAutoGenList = []
        self._LibraryAutoGenList = []
        for ModuleFile in self.Platform.Modules:
            Ma = ModuleAutoGen(
                    self.Workspace,
                    ModuleFile,
                    self.BuildTarget,
                    self.ToolChain,
                    self.Arch,
                    self.MetaFile
                    )
            if Ma not in self._ModuleAutoGenList:
                self._ModuleAutoGenList.append(Ma)
            for La in Ma.LibraryAutoGenList:
                if La not in self._LibraryAutoGenList:
                    self._LibraryAutoGenList.append(La)
                if Ma not in La.ReferenceModules:
                    La.ReferenceModules.append(Ma)

    ## Summarize ModuleAutoGen objects of all modules to be built for this platform
    def _GetModuleAutoGenList(self):
        if self._ModuleAutoGenList is None:
            self._GetAutoGenObjectList()
        return self._ModuleAutoGenList

    ## Summarize ModuleAutoGen objects of all libraries to be built for this platform
    def _GetLibraryAutoGenList(self):
        if self._LibraryAutoGenList is None:
            self._GetAutoGenObjectList()
        return self._LibraryAutoGenList

    ## Test if a module is supported by the platform
    #
    #  An error will be raised directly if the module or its arch is not supported
    #  by the platform or current configuration
    #
    def ValidModule(self, Module):
        return Module in self.Platform.Modules or Module in self.Platform.LibraryInstances \
            or Module in self._AsBuildModuleList

    ## Resolve the library classes in a module to library instances
    #
    # This method will not only resolve library classes but also sort the library
    # instances according to the dependency-ship.
    #
    #   @param  Module      The module from which the library classes will be resolved
    #
    #   @retval library_list    List of library instances sorted
    #
    def ApplyLibraryInstance(self, Module):
        # Cover the case that the binary INF file is list in the FDF file but not DSC file, return empty list directly
        if str(Module) not in self.Platform.Modules:
            return []

        return GetModuleLibInstances(Module,
                                     self.Platform,
                                     self.BuildDatabase,
                                     self.Arch,
                                     self.BuildTarget,
                                     self.ToolChain,
                                     self.MetaFile,
                                     EdkLogger)

    ## Override PCD setting (type, value, ...)
    #
    #   @param  ToPcd       The PCD to be overrided
    #   @param  FromPcd     The PCD overrideing from
    #
    def _OverridePcd(self, ToPcd, FromPcd, Module="", Msg="", Library=""):
        #
        # in case there's PCDs coming from FDF file, which have no type given.
        # at this point, ToPcd.Type has the type found from dependent
        # package
        #
        TokenCName = ToPcd.TokenCName
        for PcdItem in GlobalData.MixedPcd:
            if (ToPcd.TokenCName, ToPcd.TokenSpaceGuidCName) in GlobalData.MixedPcd[PcdItem]:
                TokenCName = PcdItem[0]
                break
        if FromPcd is not None:
            if ToPcd.Pending and FromPcd.Type:
                ToPcd.Type = FromPcd.Type
            elif ToPcd.Type and FromPcd.Type\
                and ToPcd.Type != FromPcd.Type and ToPcd.Type in FromPcd.Type:
                if ToPcd.Type.strip() == TAB_PCDS_DYNAMIC_EX:
                    ToPcd.Type = FromPcd.Type
            elif ToPcd.Type and FromPcd.Type \
                and ToPcd.Type != FromPcd.Type:
                if Library:
                    Module = str(Module) + " 's library file (" + str(Library) + ")"
                EdkLogger.error("build", OPTION_CONFLICT, "Mismatched PCD type",
                                ExtraData="%s.%s is used as [%s] in module %s, but as [%s] in %s."\
                                          % (ToPcd.TokenSpaceGuidCName, TokenCName,
                                             ToPcd.Type, Module, FromPcd.Type, Msg),
                                          File=self.MetaFile)

            if FromPcd.MaxDatumSize:
                ToPcd.MaxDatumSize = FromPcd.MaxDatumSize
                ToPcd.MaxSizeUserSet = FromPcd.MaxDatumSize
            if FromPcd.DefaultValue:
                ToPcd.DefaultValue = FromPcd.DefaultValue
            if FromPcd.TokenValue:
                ToPcd.TokenValue = FromPcd.TokenValue
            if FromPcd.DatumType:
                ToPcd.DatumType = FromPcd.DatumType
            if FromPcd.SkuInfoList:
                ToPcd.SkuInfoList = FromPcd.SkuInfoList
            # Add Flexible PCD format parse
            if ToPcd.DefaultValue:
                try:
                    ToPcd.DefaultValue = ValueExpressionEx(ToPcd.DefaultValue, ToPcd.DatumType, self._GuidDict)(True)
                except BadExpression as Value:
                    EdkLogger.error('Parser', FORMAT_INVALID, 'PCD [%s.%s] Value "%s", %s' %(ToPcd.TokenSpaceGuidCName, ToPcd.TokenCName, ToPcd.DefaultValue, Value),
                                        File=self.MetaFile)

            # check the validation of datum
            IsValid, Cause = CheckPcdDatum(ToPcd.DatumType, ToPcd.DefaultValue)
            if not IsValid:
                EdkLogger.error('build', FORMAT_INVALID, Cause, File=self.MetaFile,
                                ExtraData="%s.%s" % (ToPcd.TokenSpaceGuidCName, TokenCName))
            ToPcd.validateranges = FromPcd.validateranges
            ToPcd.validlists = FromPcd.validlists
            ToPcd.expressions = FromPcd.expressions

        if FromPcd is not None and ToPcd.DatumType == TAB_VOID and not ToPcd.MaxDatumSize:
            EdkLogger.debug(EdkLogger.DEBUG_9, "No MaxDatumSize specified for PCD %s.%s" \
                            % (ToPcd.TokenSpaceGuidCName, TokenCName))
            Value = ToPcd.DefaultValue
            if not Value:
                ToPcd.MaxDatumSize = '1'
            elif Value[0] == 'L':
                ToPcd.MaxDatumSize = str((len(Value) - 2) * 2)
            elif Value[0] == '{':
                ToPcd.MaxDatumSize = str(len(Value.split(',')))
            else:
                ToPcd.MaxDatumSize = str(len(Value) - 1)

        # apply default SKU for dynamic PCDS if specified one is not available
        if (ToPcd.Type in PCD_DYNAMIC_TYPE_SET or ToPcd.Type in PCD_DYNAMIC_EX_TYPE_SET) \
            and not ToPcd.SkuInfoList:
            if self.Platform.SkuName in self.Platform.SkuIds:
                SkuName = self.Platform.SkuName
            else:
                SkuName = TAB_DEFAULT
            ToPcd.SkuInfoList = {
                SkuName : SkuInfoClass(SkuName, self.Platform.SkuIds[SkuName][0], '', '', '', '', '', ToPcd.DefaultValue)
            }

    ## Apply PCD setting defined platform to a module
    #
    #   @param  Module  The module from which the PCD setting will be overrided
    #
    #   @retval PCD_list    The list PCDs with settings from platform
    #
    def ApplyPcdSetting(self, Module, Pcds, Library=""):
        # for each PCD in module
        for Name, Guid in Pcds:
            PcdInModule = Pcds[Name, Guid]
            # find out the PCD setting in platform
            if (Name, Guid) in self.Platform.Pcds:
                PcdInPlatform = self.Platform.Pcds[Name, Guid]
            else:
                PcdInPlatform = None
            # then override the settings if any
            self._OverridePcd(PcdInModule, PcdInPlatform, Module, Msg="DSC PCD sections", Library=Library)
            # resolve the VariableGuid value
            for SkuId in PcdInModule.SkuInfoList:
                Sku = PcdInModule.SkuInfoList[SkuId]
                if Sku.VariableGuid == '': continue
                Sku.VariableGuidValue = GuidValue(Sku.VariableGuid, self.PackageList, self.MetaFile.Path)
                if Sku.VariableGuidValue is None:
                    PackageList = "\n\t".join(str(P) for P in self.PackageList)
                    EdkLogger.error(
                                'build',
                                RESOURCE_NOT_AVAILABLE,
                                "Value of GUID [%s] is not found in" % Sku.VariableGuid,
                                ExtraData=PackageList + "\n\t(used with %s.%s from module %s)" \
                                                        % (Guid, Name, str(Module)),
                                File=self.MetaFile
                                )

        # override PCD settings with module specific setting
        if Module in self.Platform.Modules:
            PlatformModule = self.Platform.Modules[str(Module)]
            for Key  in PlatformModule.Pcds:
                Flag = False
                if Key in Pcds:
                    ToPcd = Pcds[Key]
                    Flag = True
                elif Key in GlobalData.MixedPcd:
                    for PcdItem in GlobalData.MixedPcd[Key]:
                        if PcdItem in Pcds:
                            ToPcd = Pcds[PcdItem]
                            Flag = True
                            break
                if Flag:
                    self._OverridePcd(ToPcd, PlatformModule.Pcds[Key], Module, Msg="DSC Components Module scoped PCD section", Library=Library)
        # use PCD value to calculate the MaxDatumSize when it is not specified
        for Name, Guid in Pcds:
            Pcd = Pcds[Name, Guid]
            if Pcd.DatumType == TAB_VOID and not Pcd.MaxDatumSize:
                Pcd.MaxSizeUserSet = None
                Value = Pcd.DefaultValue
                if not Value:
                    Pcd.MaxDatumSize = '1'
                elif Value[0] == 'L':
                    Pcd.MaxDatumSize = str((len(Value) - 2) * 2)
                elif Value[0] == '{':
                    Pcd.MaxDatumSize = str(len(Value.split(',')))
                else:
                    Pcd.MaxDatumSize = str(len(Value) - 1)
        return Pcds.values()

    ## Resolve library names to library modules
    #
    # (for Edk.x modules)
    #
    #   @param  Module  The module from which the library names will be resolved
    #
    #   @retval library_list    The list of library modules
    #
    def ResolveLibraryReference(self, Module):
        EdkLogger.verbose("")
        EdkLogger.verbose("Library instances of module [%s] [%s]:" % (str(Module), self.Arch))
        LibraryConsumerList = [Module]

        # "CompilerStub" is a must for Edk modules
        if Module.Libraries:
            Module.Libraries.append("CompilerStub")
        LibraryList = []
        while len(LibraryConsumerList) > 0:
            M = LibraryConsumerList.pop()
            for LibraryName in M.Libraries:
                Library = self.Platform.LibraryClasses[LibraryName, ':dummy:']
                if Library is None:
                    for Key in self.Platform.LibraryClasses.data:
                        if LibraryName.upper() == Key.upper():
                            Library = self.Platform.LibraryClasses[Key, ':dummy:']
                            break
                    if Library is None:
                        EdkLogger.warn("build", "Library [%s] is not found" % LibraryName, File=str(M),
                            ExtraData="\t%s [%s]" % (str(Module), self.Arch))
                        continue

                if Library not in LibraryList:
                    LibraryList.append(Library)
                    LibraryConsumerList.append(Library)
                    EdkLogger.verbose("\t" + LibraryName + " : " + str(Library) + ' ' + str(type(Library)))
        return LibraryList

    ## Calculate the priority value of the build option
    #
    # @param    Key    Build option definition contain: TARGET_TOOLCHAIN_ARCH_COMMANDTYPE_ATTRIBUTE
    #
    # @retval   Value  Priority value based on the priority list.
    #
    def CalculatePriorityValue(self, Key):
        Target, ToolChain, Arch, CommandType, Attr = Key.split('_')
        PriorityValue = 0x11111
        if Target == "*":
            PriorityValue &= 0x01111
        if ToolChain == "*":
            PriorityValue &= 0x10111
        if Arch == "*":
            PriorityValue &= 0x11011
        if CommandType == "*":
            PriorityValue &= 0x11101
        if Attr == "*":
            PriorityValue &= 0x11110

        return self.PrioList["0x%0.5x" % PriorityValue]


    ## Expand * in build option key
    #
    #   @param  Options     Options to be expanded
    #
    #   @retval options     Options expanded
    #
    def _ExpandBuildOption(self, Options, ModuleStyle=None):
        BuildOptions = {}
        FamilyMatch  = False
        FamilyIsNull = True

        OverrideList = {}
        #
        # Construct a list contain the build options which need override.
        #
        for Key in Options:
            #
            # Key[0] -- tool family
            # Key[1] -- TARGET_TOOLCHAIN_ARCH_COMMANDTYPE_ATTRIBUTE
            #
            if (Key[0] == self.BuildRuleFamily and
                (ModuleStyle is None or len(Key) < 3 or (len(Key) > 2 and Key[2] == ModuleStyle))):
                Target, ToolChain, Arch, CommandType, Attr = Key[1].split('_')
                if (Target == self.BuildTarget or Target == "*") and\
                    (ToolChain == self.ToolChain or ToolChain == "*") and\
                    (Arch == self.Arch or Arch == "*") and\
                    Options[Key].startswith("="):

                    if OverrideList.get(Key[1]) is not None:
                        OverrideList.pop(Key[1])
                    OverrideList[Key[1]] = Options[Key]

        #
        # Use the highest priority value.
        #
        if (len(OverrideList) >= 2):
            KeyList = OverrideList.keys()
            for Index in range(len(KeyList)):
                NowKey = KeyList[Index]
                Target1, ToolChain1, Arch1, CommandType1, Attr1 = NowKey.split("_")
                for Index1 in range(len(KeyList) - Index - 1):
                    NextKey = KeyList[Index1 + Index + 1]
                    #
                    # Compare two Key, if one is included by another, choose the higher priority one
                    #
                    Target2, ToolChain2, Arch2, CommandType2, Attr2 = NextKey.split("_")
                    if (Target1 == Target2 or Target1 == "*" or Target2 == "*") and\
                        (ToolChain1 == ToolChain2 or ToolChain1 == "*" or ToolChain2 == "*") and\
                        (Arch1 == Arch2 or Arch1 == "*" or Arch2 == "*") and\
                        (CommandType1 == CommandType2 or CommandType1 == "*" or CommandType2 == "*") and\
                        (Attr1 == Attr2 or Attr1 == "*" or Attr2 == "*"):

                        if self.CalculatePriorityValue(NowKey) > self.CalculatePriorityValue(NextKey):
                            if Options.get((self.BuildRuleFamily, NextKey)) is not None:
                                Options.pop((self.BuildRuleFamily, NextKey))
                        else:
                            if Options.get((self.BuildRuleFamily, NowKey)) is not None:
                                Options.pop((self.BuildRuleFamily, NowKey))

        for Key in Options:
            if ModuleStyle is not None and len (Key) > 2:
                # Check Module style is EDK or EDKII.
                # Only append build option for the matched style module.
                if ModuleStyle == EDK_NAME and Key[2] != EDK_NAME:
                    continue
                elif ModuleStyle == EDKII_NAME and Key[2] != EDKII_NAME:
                    continue
            Family = Key[0]
            Target, Tag, Arch, Tool, Attr = Key[1].split("_")
            # if tool chain family doesn't match, skip it
            if Tool in self.ToolDefinition and Family != "":
                FamilyIsNull = False
                if self.ToolDefinition[Tool].get(TAB_TOD_DEFINES_BUILDRULEFAMILY, "") != "":
                    if Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_BUILDRULEFAMILY]:
                        continue
                elif Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_FAMILY]:
                    continue
                FamilyMatch = True
            # expand any wildcard
            if Target == "*" or Target == self.BuildTarget:
                if Tag == "*" or Tag == self.ToolChain:
                    if Arch == "*" or Arch == self.Arch:
                        if Tool not in BuildOptions:
                            BuildOptions[Tool] = {}
                        if Attr != "FLAGS" or Attr not in BuildOptions[Tool] or Options[Key].startswith('='):
                            BuildOptions[Tool][Attr] = Options[Key]
                        else:
                            # append options for the same tool except PATH
                            if Attr != 'PATH':
                                BuildOptions[Tool][Attr] += " " + Options[Key]
                            else:
                                BuildOptions[Tool][Attr] = Options[Key]
        # Build Option Family has been checked, which need't to be checked again for family.
        if FamilyMatch or FamilyIsNull:
            return BuildOptions

        for Key in Options:
            if ModuleStyle is not None and len (Key) > 2:
                # Check Module style is EDK or EDKII.
                # Only append build option for the matched style module.
                if ModuleStyle == EDK_NAME and Key[2] != EDK_NAME:
                    continue
                elif ModuleStyle == EDKII_NAME and Key[2] != EDKII_NAME:
                    continue
            Family = Key[0]
            Target, Tag, Arch, Tool, Attr = Key[1].split("_")
            # if tool chain family doesn't match, skip it
            if Tool not in self.ToolDefinition or Family == "":
                continue
            # option has been added before
            if Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_FAMILY]:
                continue

            # expand any wildcard
            if Target == "*" or Target == self.BuildTarget:
                if Tag == "*" or Tag == self.ToolChain:
                    if Arch == "*" or Arch == self.Arch:
                        if Tool not in BuildOptions:
                            BuildOptions[Tool] = {}
                        if Attr != "FLAGS" or Attr not in BuildOptions[Tool] or Options[Key].startswith('='):
                            BuildOptions[Tool][Attr] = Options[Key]
                        else:
                            # append options for the same tool except PATH
                            if Attr != 'PATH':
                                BuildOptions[Tool][Attr] += " " + Options[Key]
                            else:
                                BuildOptions[Tool][Attr] = Options[Key]
        return BuildOptions

    ## Append build options in platform to a module
    #
    #   @param  Module  The module to which the build options will be appened
    #
    #   @retval options     The options appended with build options in platform
    #
    def ApplyBuildOption(self, Module):
        # Get the different options for the different style module
        if Module.AutoGenVersion < 0x00010005:
            PlatformOptions = self.EdkBuildOption
            ModuleTypeOptions = self.Platform.GetBuildOptionsByModuleType(EDK_NAME, Module.ModuleType)
        else:
            PlatformOptions = self.EdkIIBuildOption
            ModuleTypeOptions = self.Platform.GetBuildOptionsByModuleType(EDKII_NAME, Module.ModuleType)
        ModuleTypeOptions = self._ExpandBuildOption(ModuleTypeOptions)
        ModuleOptions = self._ExpandBuildOption(Module.BuildOptions)
        if Module in self.Platform.Modules:
            PlatformModule = self.Platform.Modules[str(Module)]
            PlatformModuleOptions = self._ExpandBuildOption(PlatformModule.BuildOptions)
        else:
            PlatformModuleOptions = {}

        BuildRuleOrder = None
        for Options in [self.ToolDefinition, ModuleOptions, PlatformOptions, ModuleTypeOptions, PlatformModuleOptions]:
            for Tool in Options:
                for Attr in Options[Tool]:
                    if Attr == TAB_TOD_DEFINES_BUILDRULEORDER:
                        BuildRuleOrder = Options[Tool][Attr]

        AllTools = set(ModuleOptions.keys() + PlatformOptions.keys() +
                       PlatformModuleOptions.keys() + ModuleTypeOptions.keys() +
                       self.ToolDefinition.keys())
        BuildOptions = defaultdict(lambda: defaultdict(str))
        for Tool in AllTools:
            for Options in [self.ToolDefinition, ModuleOptions, PlatformOptions, ModuleTypeOptions, PlatformModuleOptions]:
                if Tool not in Options:
                    continue
                for Attr in Options[Tool]:
                    #
                    # Do not generate it in Makefile
                    #
                    if Attr == TAB_TOD_DEFINES_BUILDRULEORDER:
                        continue
                    Value = Options[Tool][Attr]
                    # check if override is indicated
                    if Value.startswith('='):
                        BuildOptions[Tool][Attr] = mws.handleWsMacro(Value[1:])
                    else:
                        if Attr != 'PATH':
                            BuildOptions[Tool][Attr] += " " + mws.handleWsMacro(Value)
                        else:
                            BuildOptions[Tool][Attr] = mws.handleWsMacro(Value)

        if Module.AutoGenVersion < 0x00010005 and self.Workspace.UniFlag is not None:
            #
            # Override UNI flag only for EDK module.
            #
            BuildOptions['BUILD']['FLAGS'] = self.Workspace.UniFlag
        return BuildOptions, BuildRuleOrder

    Platform            = property(_GetPlatform)
    Name                = property(_GetName)
    Guid                = property(_GetGuid)
    Version             = property(_GetVersion)

    OutputDir           = property(_GetOutputDir)
    BuildDir            = property(_GetBuildDir)
    MakeFileDir         = property(_GetMakeFileDir)
    FdfFile             = property(_GetFdfFile)

    PcdTokenNumber      = property(_GetPcdTokenNumbers)    # (TokenCName, TokenSpaceGuidCName) : GeneratedTokenNumber
    DynamicPcdList      = property(_GetDynamicPcdList)    # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]
    NonDynamicPcdList   = property(_GetNonDynamicPcdList)    # [(TokenCName1, TokenSpaceGuidCName1), (TokenCName2, TokenSpaceGuidCName2), ...]
    NonDynamicPcdDict   = property(_GetNonDynamicPcdDict)
    PackageList         = property(_GetPackageList)

    ToolDefinition      = property(_GetToolDefinition)    # toolcode : tool path
    ToolDefinitionFile  = property(_GetToolDefFile)    # toolcode : lib path
    ToolChainFamily     = property(_GetToolChainFamily)
    BuildRuleFamily     = property(_GetBuildRuleFamily)
    BuildOption         = property(_GetBuildOptions)    # toolcode : option
    EdkBuildOption      = property(_GetEdkBuildOptions)   # edktoolcode : option
    EdkIIBuildOption    = property(_GetEdkIIBuildOptions) # edkiitoolcode : option

    BuildCommand        = property(_GetBuildCommand)
    BuildRule           = property(_GetBuildRule)
    ModuleAutoGenList   = property(_GetModuleAutoGenList)
    LibraryAutoGenList  = property(_GetLibraryAutoGenList)
    GenFdsCommand       = property(_GenFdsCommand)

#
# extend lists contained in a dictionary with lists stored in another dictionary
# if CopyToDict is not derived from DefaultDict(list) then this may raise exception
#
def ExtendCopyDictionaryLists(CopyToDict, CopyFromDict):
    for Key in CopyFromDict:
        CopyToDict[Key].extend(CopyFromDict[Key])

# Create a directory specified by a set of path elements and return the full path
def _MakeDir(PathList):
    RetVal = path.join(*PathList)
    CreateDirectory(RetVal)
    return RetVal

## ModuleAutoGen class
#
# This class encapsules the AutoGen behaviors for the build tools. In addition to
# the generation of AutoGen.h and AutoGen.c, it will generate *.depex file according
# to the [depex] section in module's inf file.
#
class ModuleAutoGen(AutoGen):
    # call super().__init__ then call the worker function with different parameter count
    def __init__(self, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):
        if not hasattr(self, "_Init"):
            super(ModuleAutoGen, self).__init__(Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)
            self._InitWorker(Workspace, MetaFile, Target, Toolchain, Arch, *args)
            self._Init = True

    ## Cache the timestamps of metafiles of every module in a class attribute
    #
    TimeDict = {}

    def __new__(cls, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs):
        # check if this module is employed by active platform
        if not PlatformAutoGen(Workspace, args[0], Target, Toolchain, Arch).ValidModule(MetaFile):
            EdkLogger.verbose("Module [%s] for [%s] is not employed by active platform\n" \
                              % (MetaFile, Arch))
            return None
        return super(ModuleAutoGen, cls).__new__(cls, Workspace, MetaFile, Target, Toolchain, Arch, *args, **kwargs)

    ## Initialize ModuleAutoGen
    #
    #   @param      Workspace           EdkIIWorkspaceBuild object
    #   @param      ModuleFile          The path of module file
    #   @param      Target              Build target (DEBUG, RELEASE)
    #   @param      Toolchain           Name of tool chain
    #   @param      Arch                The arch the module supports
    #   @param      PlatformFile        Platform meta-file
    #
    def _InitWorker(self, Workspace, ModuleFile, Target, Toolchain, Arch, PlatformFile):
        EdkLogger.debug(EdkLogger.DEBUG_9, "AutoGen module [%s] [%s]" % (ModuleFile, Arch))
        GlobalData.gProcessingFile = "%s [%s, %s, %s]" % (ModuleFile, Arch, Toolchain, Target)

        self.Workspace = Workspace
        self.WorkspaceDir = Workspace.WorkspaceDir
        self._GuidDict = Workspace._GuidDict
        self.MetaFile = ModuleFile
        self.PlatformInfo = PlatformAutoGen(Workspace, PlatformFile, Target, Toolchain, Arch)

        self.SourceDir = self.MetaFile.SubDir
        self.SourceDir = mws.relpath(self.SourceDir, self.WorkspaceDir)

        self.SourceOverrideDir = None
        # use overrided path defined in DSC file
        if self.MetaFile.Key in GlobalData.gOverrideDir:
            self.SourceOverrideDir = GlobalData.gOverrideDir[self.MetaFile.Key]

        self.ToolChain = Toolchain
        self.BuildTarget = Target
        self.Arch = Arch
        self.ToolChainFamily = self.PlatformInfo.ToolChainFamily
        self.BuildRuleFamily = self.PlatformInfo.BuildRuleFamily

        self.IsMakeFileCreated = False
        self.IsCodeFileCreated = False
        self.IsAsBuiltInfCreated = False
        self.DepexGenerated = False

        self.BuildDatabase = self.Workspace.BuildDatabase
        self.BuildRuleOrder = None
        self.BuildTime      = 0

        self._PcdComments = OrderedListDict()
        self._GuidComments = OrderedListDict()
        self._ProtocolComments = OrderedListDict()
        self._PpiComments = OrderedListDict()
        self._BuildTargets            = None
        self._IntroBuildTargetList    = None
        self._FinalBuildTargetList    = None
        self._FileTypes               = None

        self.AutoGenDepSet = set()
        self.ReferenceModules = []
        self.ConstPcd                  = {}


    def __repr__(self):
        return "%s [%s]" % (self.MetaFile, self.Arch)

    # Get FixedAtBuild Pcds of this Module
    @cached_property
    def FixedAtBuildPcds(self):
        RetVal = []
        for Pcd in self.ModulePcdList:
            if Pcd.Type != TAB_PCDS_FIXED_AT_BUILD:
                continue
            if Pcd not in RetVal:
                RetVal.append(Pcd)
        return RetVal

    @cached_property
    def FixedVoidTypePcds(self):
        RetVal = {}
        for Pcd in self.FixedAtBuildPcds:
            if Pcd.DatumType == TAB_VOID:
                if '{}.{}'.format(Pcd.TokenSpaceGuidCName, Pcd.TokenCName) not in RetVal:
                    RetVal['{}.{}'.format(Pcd.TokenSpaceGuidCName, Pcd.TokenCName)] = Pcd.DefaultValue
        return RetVal

    @property
    def UniqueBaseName(self):
        BaseName = self.Name
        for Module in self.PlatformInfo.ModuleAutoGenList:
            if Module.MetaFile == self.MetaFile:
                continue
            if Module.Name == self.Name:
                if uuid.UUID(Module.Guid) == uuid.UUID(self.Guid):
                    EdkLogger.error("build", FILE_DUPLICATED, 'Modules have same BaseName and FILE_GUID:\n'
                                    '  %s\n  %s' % (Module.MetaFile, self.MetaFile))
                BaseName = '%s_%s' % (self.Name, self.Guid)
        return BaseName

    # Macros could be used in build_rule.txt (also Makefile)
    @cached_property
    def Macros(self):
        return OrderedDict((
            ("WORKSPACE" ,self.WorkspaceDir),
            ("MODULE_NAME" ,self.Name),
            ("MODULE_NAME_GUID" ,self.UniqueBaseName),
            ("MODULE_GUID" ,self.Guid),
            ("MODULE_VERSION" ,self.Version),
            ("MODULE_TYPE" ,self.ModuleType),
            ("MODULE_FILE" ,str(self.MetaFile)),
            ("MODULE_FILE_BASE_NAME" ,self.MetaFile.BaseName),
            ("MODULE_RELATIVE_DIR" ,self.SourceDir),
            ("MODULE_DIR" ,self.SourceDir),
            ("BASE_NAME" ,self.Name),
            ("ARCH" ,self.Arch),
            ("TOOLCHAIN" ,self.ToolChain),
            ("TOOLCHAIN_TAG" ,self.ToolChain),
            ("TOOL_CHAIN_TAG" ,self.ToolChain),
            ("TARGET" ,self.BuildTarget),
            ("BUILD_DIR" ,self.PlatformInfo.BuildDir),
            ("BIN_DIR" ,os.path.join(self.PlatformInfo.BuildDir, self.Arch)),
            ("LIB_DIR" ,os.path.join(self.PlatformInfo.BuildDir, self.Arch)),
            ("MODULE_BUILD_DIR" ,self.BuildDir),
            ("OUTPUT_DIR" ,self.OutputDir),
            ("DEBUG_DIR" ,self.DebugDir),
            ("DEST_DIR_OUTPUT" ,self.OutputDir),
            ("DEST_DIR_DEBUG" ,self.DebugDir),
            ("PLATFORM_NAME" ,self.PlatformInfo.Name),
            ("PLATFORM_GUID" ,self.PlatformInfo.Guid),
            ("PLATFORM_VERSION" ,self.PlatformInfo.Version),
            ("PLATFORM_RELATIVE_DIR" ,self.PlatformInfo.SourceDir),
            ("PLATFORM_DIR" ,mws.join(self.WorkspaceDir, self.PlatformInfo.SourceDir)),
            ("PLATFORM_OUTPUT_DIR" ,self.PlatformInfo.OutputDir),
            ("FFS_OUTPUT_DIR" ,self.FfsOutputDir)
            ))

    ## Return the module build data object
    @cached_property
    def Module(self):
        return self.Workspace.BuildDatabase[self.MetaFile, self.Arch, self.BuildTarget, self.ToolChain]

    ## Return the module name
    @cached_property
    def Name(self):
        return self.Module.BaseName

    ## Return the module DxsFile if exist
    @cached_property
    def DxsFile(self):
        return self.Module.DxsFile

    ## Return the module meta-file GUID
    @cached_property
    def Guid(self):
        #
        # To build same module more than once, the module path with FILE_GUID overridden has
        # the file name FILE_GUIDmodule.inf, but the relative path (self.MetaFile.File) is the realy path
        # in DSC. The overridden GUID can be retrieved from file name
        #
        if os.path.basename(self.MetaFile.File) != os.path.basename(self.MetaFile.Path):
            #
            # Length of GUID is 36
            #
            return os.path.basename(self.MetaFile.Path)[:36]
        return self.Module.Guid

    ## Return the module version
    @cached_property
    def Version(self):
        return self.Module.Version

    ## Return the module type
    @cached_property
    def ModuleType(self):
        return self.Module.ModuleType

    ## Return the component type (for Edk.x style of module)
    @cached_property
    def ComponentType(self):
        return self.Module.ComponentType

    ## Return the build type
    @cached_property
    def BuildType(self):
        return self.Module.BuildType

    ## Return the PCD_IS_DRIVER setting
    @cached_property
    def PcdIsDriver(self):
        return self.Module.PcdIsDriver

    ## Return the autogen version, i.e. module meta-file version
    @cached_property
    def AutoGenVersion(self):
        return self.Module.AutoGenVersion

    ## Check if the module is library or not
    @cached_property
    def IsLibrary(self):
        return bool(self.Module.LibraryClass)

    ## Check if the module is binary module or not
    @cached_property
    def IsBinaryModule(self):
        return self.Module.IsBinaryModule

    ## Return the directory to store intermediate files of the module
    @cached_property
    def BuildDir(self):
        return _MakeDir((
                                    self.PlatformInfo.BuildDir,
                                    self.Arch,
                                    self.SourceDir,
                                    self.MetaFile.BaseName
            ))

    ## Return the directory to store the intermediate object files of the mdoule
    @cached_property
    def OutputDir(self):
        return _MakeDir((self.BuildDir, "OUTPUT"))

    ## Return the directory path to store ffs file
    @cached_property
    def FfsOutputDir(self):
        if GlobalData.gFdfParser:
            return path.join(self.PlatformInfo.BuildDir, TAB_FV_DIRECTORY, "Ffs", self.Guid + self.Name)
        return ''

    ## Return the directory to store auto-gened source files of the mdoule
    @cached_property
    def DebugDir(self):
        return _MakeDir((self.BuildDir, "DEBUG"))

    ## Return the path of custom file
    @cached_property
    def CustomMakefile(self):
        RetVal = {}
        for Type in self.Module.CustomMakefile:
            MakeType = gMakeTypeMap[Type] if Type in gMakeTypeMap else 'nmake'
            if self.SourceOverrideDir is not None:
                File = os.path.join(self.SourceOverrideDir, self.Module.CustomMakefile[Type])
                if not os.path.exists(File):
                    File = os.path.join(self.SourceDir, self.Module.CustomMakefile[Type])
            else:
                File = os.path.join(self.SourceDir, self.Module.CustomMakefile[Type])
            RetVal[MakeType] = File
        return RetVal

    ## Return the directory of the makefile
    #
    #   @retval     string  The directory string of module's makefile
    #
    @cached_property
    def MakeFileDir(self):
        return self.BuildDir

    ## Return build command string
    #
    #   @retval     string  Build command string
    #
    @cached_property
    def BuildCommand(self):
        return self.PlatformInfo.BuildCommand

    ## Get object list of all packages the module and its dependent libraries belong to
    #
    #   @retval     list    The list of package object
    #
    @cached_property
    def DerivedPackageList(self):
        PackageList = []
        for M in [self.Module] + self.DependentLibraryList:
            for Package in M.Packages:
                if Package in PackageList:
                    continue
                PackageList.append(Package)
        return PackageList

    ## Get the depex string
    #
    # @return : a string contain all depex expresion.
    def _GetDepexExpresionString(self):
        DepexStr = ''
        DepexList = []
        ## DPX_SOURCE IN Define section.
        if self.Module.DxsFile:
            return DepexStr
        for M in [self.Module] + self.DependentLibraryList:
            Filename = M.MetaFile.Path
            InfObj = InfSectionParser.InfSectionParser(Filename)
            DepexExpresionList = InfObj.GetDepexExpresionList()
            for DepexExpresion in DepexExpresionList:
                for key in DepexExpresion:
                    Arch, ModuleType = key
                    DepexExpr = [x for x in DepexExpresion[key] if not str(x).startswith('#')]
                    # the type of build module is USER_DEFINED.
                    # All different DEPEX section tags would be copied into the As Built INF file
                    # and there would be separate DEPEX section tags
                    if self.ModuleType.upper() == SUP_MODULE_USER_DEFINED:
                        if (Arch.upper() == self.Arch.upper()) and (ModuleType.upper() != TAB_ARCH_COMMON):
                            DepexList.append({(Arch, ModuleType): DepexExpr})
                    else:
                        if Arch.upper() == TAB_ARCH_COMMON or \
                          (Arch.upper() == self.Arch.upper() and \
                          ModuleType.upper() in [TAB_ARCH_COMMON, self.ModuleType.upper()]):
                            DepexList.append({(Arch, ModuleType): DepexExpr})

        #the type of build module is USER_DEFINED.
        if self.ModuleType.upper() == SUP_MODULE_USER_DEFINED:
            for Depex in DepexList:
                for key in Depex:
                    DepexStr += '[Depex.%s.%s]\n' % key
                    DepexStr += '\n'.join('# '+ val for val in Depex[key])
                    DepexStr += '\n\n'
            if not DepexStr:
                return '[Depex.%s]\n' % self.Arch
            return DepexStr

        #the type of build module not is USER_DEFINED.
        Count = 0
        for Depex in DepexList:
            Count += 1
            if DepexStr != '':
                DepexStr += ' AND '
            DepexStr += '('
            for D in Depex.values():
                DepexStr += ' '.join(val for val in D)
            Index = DepexStr.find('END')
            if Index > -1 and Index == len(DepexStr) - 3:
                DepexStr = DepexStr[:-3]
            DepexStr = DepexStr.strip()
            DepexStr += ')'
        if Count == 1:
            DepexStr = DepexStr.lstrip('(').rstrip(')').strip()
        if not DepexStr:
            return '[Depex.%s]\n' % self.Arch
        return '[Depex.%s]\n#  ' % self.Arch + DepexStr

    ## Merge dependency expression
    #
    #   @retval     list    The token list of the dependency expression after parsed
    #
    @cached_property
    def DepexList(self):
        if self.DxsFile or self.IsLibrary or TAB_DEPENDENCY_EXPRESSION_FILE in self.FileTypes:
            return {}

        RetVal = {self.ModuleType:[]}

        for ModuleType in RetVal:
            DepexList = RetVal[ModuleType]
            #
            # Append depex from dependent libraries, if not "BEFORE", "AFTER" expresion
            #
            for M in [self.Module] + self.DependentLibraryList:
                Inherited = False
                for D in M.Depex[self.Arch, ModuleType]:
                    if DepexList != []:
                        DepexList.append('AND')
                    DepexList.append('(')
                    #replace D with value if D is FixedAtBuild PCD
                    NewList = []
                    for item in D:
                        if '.' not in item:
                            NewList.append(item)
                        else:
                            if item not in self._FixedPcdVoidTypeDict:
                                EdkLogger.error("build", FORMAT_INVALID, "{} used in [Depex] section should be used as FixedAtBuild type and VOID* datum type in the module.".format(item))
                            else:
                                Value = self._FixedPcdVoidTypeDict[item]
                                if len(Value.split(',')) != 16:
                                    EdkLogger.error("build", FORMAT_INVALID,
                                                    "{} used in [Depex] section should be used as FixedAtBuild type and VOID* datum type and 16 bytes in the module.".format(item))
                                NewList.append(Value)
                    DepexList.extend(NewList)
                    if DepexList[-1] == 'END':  # no need of a END at this time
                        DepexList.pop()
                    DepexList.append(')')
                    Inherited = True
                if Inherited:
                    EdkLogger.verbose("DEPEX[%s] (+%s) = %s" % (self.Name, M.BaseName, DepexList))
                if 'BEFORE' in DepexList or 'AFTER' in DepexList:
                    break
                if len(DepexList) > 0:
                    EdkLogger.verbose('')
        return RetVal

    ## Merge dependency expression
    #
    #   @retval     list    The token list of the dependency expression after parsed
    #
    @cached_property
    def DepexExpressionTokenList(self):
        if self.DxsFile or self.IsLibrary or TAB_DEPENDENCY_EXPRESSION_FILE in self.FileTypes:
            return {}

        RetVal = {self.ModuleType:''}

        for ModuleType in RetVal:
            DepexExpressionString = RetVal[ModuleType]
            #
            # Append depex from dependent libraries, if not "BEFORE", "AFTER" expresion
            #
            for M in [self.Module] + self.DependentLibraryList:
                Inherited = False
                for D in M.DepexExpression[self.Arch, ModuleType]:
                    if DepexExpressionString != '':
                        DepexExpressionString += ' AND '
                    DepexExpressionString += '('
                    DepexExpressionString += D
                    DepexExpressionString = DepexExpressionString.rstrip('END').strip()
                    DepexExpressionString += ')'
                    Inherited = True
                if Inherited:
                    EdkLogger.verbose("DEPEX[%s] (+%s) = %s" % (self.Name, M.BaseName, DepexExpressionString))
                if 'BEFORE' in DepexExpressionString or 'AFTER' in DepexExpressionString:
                    break
            if len(DepexExpressionString) > 0:
                EdkLogger.verbose('')
            RetVal[ModuleType] = DepexExpressionString
        return RetVal

    # Get the tiano core user extension, it is contain dependent library.
    # @retval: a list contain tiano core userextension.
    #
    def _GetTianoCoreUserExtensionList(self):
        TianoCoreUserExtentionList = []
        for M in [self.Module] + self.DependentLibraryList:
            Filename = M.MetaFile.Path
            InfObj = InfSectionParser.InfSectionParser(Filename)
            TianoCoreUserExtenList = InfObj.GetUserExtensionTianoCore()
            for TianoCoreUserExtent in TianoCoreUserExtenList:
                for Section in TianoCoreUserExtent:
                    ItemList = Section.split(TAB_SPLIT)
                    Arch = self.Arch
                    if len(ItemList) == 4:
                        Arch = ItemList[3]
                    if Arch.upper() == TAB_ARCH_COMMON or Arch.upper() == self.Arch.upper():
                        TianoCoreList = []
                        TianoCoreList.extend([TAB_SECTION_START + Section + TAB_SECTION_END])
                        TianoCoreList.extend(TianoCoreUserExtent[Section][:])
                        TianoCoreList.append('\n')
                        TianoCoreUserExtentionList.append(TianoCoreList)

        return TianoCoreUserExtentionList

    ## Return the list of specification version required for the module
    #
    #   @retval     list    The list of specification defined in module file
    #
    @cached_property
    def Specification(self):
        return self.Module.Specification

    ## Tool option for the module build
    #
    #   @param      PlatformInfo    The object of PlatformBuildInfo
    #   @retval     dict            The dict containing valid options
    #
    @cached_property
    def BuildOption(self):
        RetVal, self.BuildRuleOrder = self.PlatformInfo.ApplyBuildOption(self.Module)
        if self.BuildRuleOrder:
            self.BuildRuleOrder = ['.%s' % Ext for Ext in self.BuildRuleOrder.split()]
        return RetVal

    ## Get include path list from tool option for the module build
    #
    #   @retval     list            The include path list
    #
    @cached_property
    def BuildOptionIncPathList(self):
        #
        # Regular expression for finding Include Directories, the difference between MSFT and INTEL/GCC/RVCT
        # is the former use /I , the Latter used -I to specify include directories
        #
        if self.PlatformInfo.ToolChainFamily in ('MSFT'):
            BuildOptIncludeRegEx = gBuildOptIncludePatternMsft
        elif self.PlatformInfo.ToolChainFamily in ('INTEL', 'GCC', 'RVCT'):
            BuildOptIncludeRegEx = gBuildOptIncludePatternOther
        else:
            #
            # New ToolChainFamily, don't known whether there is option to specify include directories
            #
            return []

        RetVal = []
        for Tool in ('CC', 'PP', 'VFRPP', 'ASLPP', 'ASLCC', 'APP', 'ASM'):
            try:
                FlagOption = self.BuildOption[Tool]['FLAGS']
            except KeyError:
                FlagOption = ''

            if self.PlatformInfo.ToolChainFamily != 'RVCT':
                IncPathList = [NormPath(Path, self.Macros) for Path in BuildOptIncludeRegEx.findall(FlagOption)]
            else:
                #
                # RVCT may specify a list of directory seperated by commas
                #
                IncPathList = []
                for Path in BuildOptIncludeRegEx.findall(FlagOption):
                    PathList = GetSplitList(Path, TAB_COMMA_SPLIT)
                    IncPathList.extend(NormPath(PathEntry, self.Macros) for PathEntry in PathList)

            #
            # EDK II modules must not reference header files outside of the packages they depend on or
            # within the module's directory tree. Report error if violation.
            #
            if self.AutoGenVersion >= 0x00010005:
                for Path in IncPathList:
                    if (Path not in self.IncludePathList) and (CommonPath([Path, self.MetaFile.Dir]) != self.MetaFile.Dir):
                        ErrMsg = "The include directory for the EDK II module in this line is invalid %s specified in %s FLAGS '%s'" % (Path, Tool, FlagOption)
                        EdkLogger.error("build",
                                        PARAMETER_INVALID,
                                        ExtraData=ErrMsg,
                                        File=str(self.MetaFile))
            RetVal += IncPathList
        return RetVal

    ## Return a list of files which can be built from source
    #
    #  What kind of files can be built is determined by build rules in
    #  $(CONF_DIRECTORY)/build_rule.txt and toolchain family.
    #
    @cached_property
    def SourceFileList(self):
        RetVal = []
        ToolChainTagSet = {"", "*", self.ToolChain}
        ToolChainFamilySet = {"", "*", self.ToolChainFamily, self.BuildRuleFamily}
        for F in self.Module.Sources:
            # match tool chain
            if F.TagName not in ToolChainTagSet:
                EdkLogger.debug(EdkLogger.DEBUG_9, "The toolchain [%s] for processing file [%s] is found, "
                                "but [%s] is currently used" % (F.TagName, str(F), self.ToolChain))
                continue
            # match tool chain family or build rule family
            if F.ToolChainFamily not in ToolChainFamilySet:
                EdkLogger.debug(
                            EdkLogger.DEBUG_0,
                            "The file [%s] must be built by tools of [%s], " \
                            "but current toolchain family is [%s], buildrule family is [%s]" \
                                % (str(F), F.ToolChainFamily, self.ToolChainFamily, self.BuildRuleFamily))
                continue

            # add the file path into search path list for file including
            if F.Dir not in self.IncludePathList and self.AutoGenVersion >= 0x00010005:
                self.IncludePathList.insert(0, F.Dir)
            RetVal.append(F)

        self._MatchBuildRuleOrder(RetVal)

        for F in RetVal:
            self._ApplyBuildRule(F, TAB_UNKNOWN_FILE)
        return RetVal

    def _MatchBuildRuleOrder(self, FileList):
        Order_Dict = {}
        self.BuildOption
        for SingleFile in FileList:
            if self.BuildRuleOrder and SingleFile.Ext in self.BuildRuleOrder and SingleFile.Ext in self.BuildRules:
                key = SingleFile.Path.split(SingleFile.Ext)[0]
                if key in Order_Dict:
                    Order_Dict[key].append(SingleFile.Ext)
                else:
                    Order_Dict[key] = [SingleFile.Ext]

        RemoveList = []
        for F in Order_Dict:
            if len(Order_Dict[F]) > 1:
                Order_Dict[F].sort(key=lambda i: self.BuildRuleOrder.index(i))
                for Ext in Order_Dict[F][1:]:
                    RemoveList.append(F + Ext)

        for item in RemoveList:
            FileList.remove(item)

        return FileList

    ## Return the list of unicode files
    @cached_property
    def UnicodeFileList(self):
        return self.FileTypes.get(TAB_UNICODE_FILE,[])

    ## Return the list of vfr files
    @cached_property
    def VfrFileList(self):
        return self.FileTypes.get(TAB_VFR_FILE, [])

    ## Return the list of Image Definition files
    @cached_property
    def IdfFileList(self):
        return self.FileTypes.get(TAB_IMAGE_FILE,[])

    ## Return a list of files which can be built from binary
    #
    #  "Build" binary files are just to copy them to build directory.
    #
    #   @retval     list            The list of files which can be built later
    #
    @cached_property
    def BinaryFileList(self):
        RetVal = []
        for F in self.Module.Binaries:
            if F.Target not in [TAB_ARCH_COMMON, '*'] and F.Target != self.BuildTarget:
                continue
            RetVal.append(F)
            self._ApplyBuildRule(F, F.Type, BinaryFileList=RetVal)
        return RetVal

    @cached_property
    def BuildRules(self):
        RetVal = {}
        BuildRuleDatabase = self.PlatformInfo.BuildRule
        for Type in BuildRuleDatabase.FileTypeList:
            #first try getting build rule by BuildRuleFamily
            RuleObject = BuildRuleDatabase[Type, self.BuildType, self.Arch, self.BuildRuleFamily]
            if not RuleObject:
                # build type is always module type, but ...
                if self.ModuleType != self.BuildType:
                    RuleObject = BuildRuleDatabase[Type, self.ModuleType, self.Arch, self.BuildRuleFamily]
            #second try getting build rule by ToolChainFamily
            if not RuleObject:
                RuleObject = BuildRuleDatabase[Type, self.BuildType, self.Arch, self.ToolChainFamily]
                if not RuleObject:
                    # build type is always module type, but ...
                    if self.ModuleType != self.BuildType:
                        RuleObject = BuildRuleDatabase[Type, self.ModuleType, self.Arch, self.ToolChainFamily]
            if not RuleObject:
                continue
            RuleObject = RuleObject.Instantiate(self.Macros)
            RetVal[Type] = RuleObject
            for Ext in RuleObject.SourceFileExtList:
                RetVal[Ext] = RuleObject
        return RetVal

    def _ApplyBuildRule(self, File, FileType, BinaryFileList=None):
        if self._BuildTargets is None:
            self._IntroBuildTargetList = set()
            self._FinalBuildTargetList = set()
            self._BuildTargets = defaultdict(set)
            self._FileTypes = defaultdict(set)

        if not BinaryFileList:
            BinaryFileList = self.BinaryFileList

        SubDirectory = os.path.join(self.OutputDir, File.SubDir)
        if not os.path.exists(SubDirectory):
            CreateDirectory(SubDirectory)
        LastTarget = None
        RuleChain = set()
        SourceList = [File]
        Index = 0
        #
        # Make sure to get build rule order value
        #
        self.BuildOption

        while Index < len(SourceList):
            Source = SourceList[Index]
            Index = Index + 1

            if Source != File:
                CreateDirectory(Source.Dir)

            if File.IsBinary and File == Source and File in BinaryFileList:
                # Skip all files that are not binary libraries
                if not self.IsLibrary:
                    continue
                RuleObject = self.BuildRules[TAB_DEFAULT_BINARY_FILE]
            elif FileType in self.BuildRules:
                RuleObject = self.BuildRules[FileType]
            elif Source.Ext in self.BuildRules:
                RuleObject = self.BuildRules[Source.Ext]
            else:
                # stop at no more rules
                if LastTarget:
                    self._FinalBuildTargetList.add(LastTarget)
                break

            FileType = RuleObject.SourceFileType
            self._FileTypes[FileType].add(Source)

            # stop at STATIC_LIBRARY for library
            if self.IsLibrary and FileType == TAB_STATIC_LIBRARY:
                if LastTarget:
                    self._FinalBuildTargetList.add(LastTarget)
                break

            Target = RuleObject.Apply(Source, self.BuildRuleOrder)
            if not Target:
                if LastTarget:
                    self._FinalBuildTargetList.add(LastTarget)
                break
            elif not Target.Outputs:
                # Only do build for target with outputs
                self._FinalBuildTargetList.add(Target)

            self._BuildTargets[FileType].add(Target)

            if not Source.IsBinary and Source == File:
                self._IntroBuildTargetList.add(Target)

            # to avoid cyclic rule
            if FileType in RuleChain:
                break

            RuleChain.add(FileType)
            SourceList.extend(Target.Outputs)
            LastTarget = Target
            FileType = TAB_UNKNOWN_FILE

    @cached_property
    def Targets(self):
        if self._BuildTargets is None:
            self._IntroBuildTargetList = set()
            self._FinalBuildTargetList = set()
            self._BuildTargets = defaultdict(set)
            self._FileTypes = defaultdict(set)

        #TRICK: call SourceFileList property to apply build rule for source files
        self.SourceFileList

        #TRICK: call _GetBinaryFileList to apply build rule for binary files
        self.BinaryFileList

        return self._BuildTargets

    @cached_property
    def IntroTargetList(self):
        self.Targets
        return self._IntroBuildTargetList

    @cached_property
    def CodaTargetList(self):
        self.Targets
        return self._FinalBuildTargetList

    @cached_property
    def FileTypes(self):
        self.Targets
        return self._FileTypes

    ## Get the list of package object the module depends on
    #
    #   @retval     list    The package object list
    #
    @cached_property
    def DependentPackageList(self):
        return self.Module.Packages

    ## Return the list of auto-generated code file
    #
    #   @retval     list        The list of auto-generated file
    #
    @cached_property
    def AutoGenFileList(self):
        AutoGenUniIdf = self.BuildType != 'UEFI_HII'
        UniStringBinBuffer = BytesIO()
        IdfGenBinBuffer = BytesIO()
        RetVal = {}
        AutoGenC = TemplateString()
        AutoGenH = TemplateString()
        StringH = TemplateString()
        StringIdf = TemplateString()
        GenC.CreateCode(self, AutoGenC, AutoGenH, StringH, AutoGenUniIdf, UniStringBinBuffer, StringIdf, AutoGenUniIdf, IdfGenBinBuffer)
        #
        # AutoGen.c is generated if there are library classes in inf, or there are object files
        #
        if str(AutoGenC) != "" and (len(self.Module.LibraryClasses) > 0
                                    or TAB_OBJECT_FILE in self.FileTypes):
            AutoFile = PathClass(gAutoGenCodeFileName, self.DebugDir)
            RetVal[AutoFile] = str(AutoGenC)
            self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)
        if str(AutoGenH) != "":
            AutoFile = PathClass(gAutoGenHeaderFileName, self.DebugDir)
            RetVal[AutoFile] = str(AutoGenH)
            self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)
        if str(StringH) != "":
            AutoFile = PathClass(gAutoGenStringFileName % {"module_name":self.Name}, self.DebugDir)
            RetVal[AutoFile] = str(StringH)
            self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)
        if UniStringBinBuffer is not None and UniStringBinBuffer.getvalue() != "":
            AutoFile = PathClass(gAutoGenStringFormFileName % {"module_name":self.Name}, self.OutputDir)
            RetVal[AutoFile] = UniStringBinBuffer.getvalue()
            AutoFile.IsBinary = True
            self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)
        if UniStringBinBuffer is not None:
            UniStringBinBuffer.close()
        if str(StringIdf) != "":
            AutoFile = PathClass(gAutoGenImageDefFileName % {"module_name":self.Name}, self.DebugDir)
            RetVal[AutoFile] = str(StringIdf)
            self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)
        if IdfGenBinBuffer is not None and IdfGenBinBuffer.getvalue() != "":
            AutoFile = PathClass(gAutoGenIdfFileName % {"module_name":self.Name}, self.OutputDir)
            RetVal[AutoFile] = IdfGenBinBuffer.getvalue()
            AutoFile.IsBinary = True
            self._ApplyBuildRule(AutoFile, TAB_UNKNOWN_FILE)
        if IdfGenBinBuffer is not None:
            IdfGenBinBuffer.close()
        return RetVal

    ## Return the list of library modules explicitly or implicityly used by this module
    @cached_property
    def DependentLibraryList(self):
        # only merge library classes and PCD for non-library module
        if self.IsLibrary:
            return []
        if self.AutoGenVersion < 0x00010005:
            return self.PlatformInfo.ResolveLibraryReference(self.Module)
        return self.PlatformInfo.ApplyLibraryInstance(self.Module)

    ## Get the list of PCDs from current module
    #
    #   @retval     list                    The list of PCD
    #
    @cached_property
    def ModulePcdList(self):
        # apply PCD settings from platform
        RetVal = self.PlatformInfo.ApplyPcdSetting(self.Module, self.Module.Pcds)
        ExtendCopyDictionaryLists(self._PcdComments, self.Module.PcdComments)
        return RetVal

    ## Get the list of PCDs from dependent libraries
    #
    #   @retval     list                    The list of PCD
    #
    @cached_property
    def LibraryPcdList(self):
        if self.IsLibrary:
            return []
        RetVal = []
        Pcds = set()
        # get PCDs from dependent libraries
        for Library in self.DependentLibraryList:
            PcdsInLibrary = OrderedDict()
            ExtendCopyDictionaryLists(self._PcdComments, Library.PcdComments)
            for Key in Library.Pcds:
                # skip duplicated PCDs
                if Key in self.Module.Pcds or Key in Pcds:
                    continue
                Pcds.add(Key)
                PcdsInLibrary[Key] = copy.copy(Library.Pcds[Key])
            RetVal.extend(self.PlatformInfo.ApplyPcdSetting(self.Module, PcdsInLibrary, Library=Library))
        return RetVal

    ## Get the GUID value mapping
    #
    #   @retval     dict    The mapping between GUID cname and its value
    #
    @cached_property
    def GuidList(self):
        RetVal = OrderedDict(self.Module.Guids)
        for Library in self.DependentLibraryList:
            RetVal.update(Library.Guids)
            ExtendCopyDictionaryLists(self._GuidComments, Library.GuidComments)
        ExtendCopyDictionaryLists(self._GuidComments, self.Module.GuidComments)
        return RetVal

    @cached_property
    def GetGuidsUsedByPcd(self):
        RetVal = OrderedDict(self.Module.GetGuidsUsedByPcd())
        for Library in self.DependentLibraryList:
            RetVal.update(Library.GetGuidsUsedByPcd())
        return RetVal
    ## Get the protocol value mapping
    #
    #   @retval     dict    The mapping between protocol cname and its value
    #
    @cached_property
    def ProtocolList(self):
        RetVal = OrderedDict(self.Module.Protocols)
        for Library in self.DependentLibraryList:
            RetVal.update(Library.Protocols)
            ExtendCopyDictionaryLists(self._ProtocolComments, Library.ProtocolComments)
        ExtendCopyDictionaryLists(self._ProtocolComments, self.Module.ProtocolComments)
        return RetVal

    ## Get the PPI value mapping
    #
    #   @retval     dict    The mapping between PPI cname and its value
    #
    @cached_property
    def PpiList(self):
        RetVal = OrderedDict(self.Module.Ppis)
        for Library in self.DependentLibraryList:
            RetVal.update(Library.Ppis)
            ExtendCopyDictionaryLists(self._PpiComments, Library.PpiComments)
        ExtendCopyDictionaryLists(self._PpiComments, self.Module.PpiComments)
        return RetVal

    ## Get the list of include search path
    #
    #   @retval     list                    The list path
    #
    @cached_property
    def IncludePathList(self):
        RetVal = []
        if self.AutoGenVersion < 0x00010005:
            for Inc in self.Module.Includes:
                if Inc not in RetVal:
                    RetVal.append(Inc)
                # for Edk modules
                Inc = path.join(Inc, self.Arch.capitalize())
                if os.path.exists(Inc) and Inc not in RetVal:
                    RetVal.append(Inc)
            # Edk module needs to put DEBUG_DIR at the end of search path and not to use SOURCE_DIR all the time
            RetVal.append(self.DebugDir)
        else:
            RetVal.append(self.MetaFile.Dir)
            RetVal.append(self.DebugDir)

        for Package in self.Module.Packages:
            PackageDir = mws.join(self.WorkspaceDir, Package.MetaFile.Dir)
            if PackageDir not in RetVal:
                RetVal.append(PackageDir)
            IncludesList = Package.Includes
            if Package._PrivateIncludes:
                if not self.MetaFile.Path.startswith(PackageDir):
                    IncludesList = list(set(Package.Includes).difference(set(Package._PrivateIncludes)))
            for Inc in IncludesList:
                if Inc not in RetVal:
                    RetVal.append(str(Inc))
        return RetVal

    @cached_property
    def IncludePathLength(self):
        return sum(len(inc)+1 for inc in self.IncludePathList)

    ## Get HII EX PCDs which maybe used by VFR
    #
    #  efivarstore used by VFR may relate with HII EX PCDs
    #  Get the variable name and GUID from efivarstore and HII EX PCD
    #  List the HII EX PCDs in As Built INF if both name and GUID match.
    #
    #  @retval    list    HII EX PCDs
    #
    def _GetPcdsMaybeUsedByVfr(self):
        if not self.SourceFileList:
            return []

        NameGuids = set()
        for SrcFile in self.SourceFileList:
            if SrcFile.Ext.lower() != '.vfr':
                continue
            Vfri = os.path.join(self.OutputDir, SrcFile.BaseName + '.i')
            if not os.path.exists(Vfri):
                continue
            VfriFile = open(Vfri, 'r')
            Content = VfriFile.read()
            VfriFile.close()
            Pos = Content.find('efivarstore')
            while Pos != -1:
                #
                # Make sure 'efivarstore' is the start of efivarstore statement
                # In case of the value of 'name' (name = efivarstore) is equal to 'efivarstore'
                #
                Index = Pos - 1
                while Index >= 0 and Content[Index] in ' \t\r\n':
                    Index -= 1
                if Index >= 0 and Content[Index] != ';':
                    Pos = Content.find('efivarstore', Pos + len('efivarstore'))
                    continue
                #
                # 'efivarstore' must be followed by name and guid
                #
                Name = gEfiVarStoreNamePattern.search(Content, Pos)
                if not Name:
                    break
                Guid = gEfiVarStoreGuidPattern.search(Content, Pos)
                if not Guid:
                    break
                NameArray = ConvertStringToByteArray('L"' + Name.group(1) + '"')
                NameGuids.add((NameArray, GuidStructureStringToGuidString(Guid.group(1))))
                Pos = Content.find('efivarstore', Name.end())
        if not NameGuids:
            return []
        HiiExPcds = []
        for Pcd in self.PlatformInfo.Platform.Pcds.values():
            if Pcd.Type != TAB_PCDS_DYNAMIC_EX_HII:
                continue
            for SkuInfo in Pcd.SkuInfoList.values():
                Value = GuidValue(SkuInfo.VariableGuid, self.PlatformInfo.PackageList, self.MetaFile.Path)
                if not Value:
                    continue
                Name = ConvertStringToByteArray(SkuInfo.VariableName)
                Guid = GuidStructureStringToGuidString(Value)
                if (Name, Guid) in NameGuids and Pcd not in HiiExPcds:
                    HiiExPcds.append(Pcd)
                    break

        return HiiExPcds

    def _GenOffsetBin(self):
        VfrUniBaseName = {}
        for SourceFile in self.Module.Sources:
            if SourceFile.Type.upper() == ".VFR" :
                #
                # search the .map file to find the offset of vfr binary in the PE32+/TE file.
                #
                VfrUniBaseName[SourceFile.BaseName] = (SourceFile.BaseName + "Bin")
            elif SourceFile.Type.upper() == ".UNI" :
                #
                # search the .map file to find the offset of Uni strings binary in the PE32+/TE file.
                #
                VfrUniBaseName["UniOffsetName"] = (self.Name + "Strings")

        if not VfrUniBaseName:
            return None
        MapFileName = os.path.join(self.OutputDir, self.Name + ".map")
        EfiFileName = os.path.join(self.OutputDir, self.Name + ".efi")
        VfrUniOffsetList = GetVariableOffset(MapFileName, EfiFileName, VfrUniBaseName.values())
        if not VfrUniOffsetList:
            return None

        OutputName = '%sOffset.bin' % self.Name
        UniVfrOffsetFileName    =  os.path.join( self.OutputDir, OutputName)

        try:
            fInputfile = open(UniVfrOffsetFileName, "wb+", 0)
        except:
            EdkLogger.error("build", FILE_OPEN_FAILURE, "File open failed for %s" % UniVfrOffsetFileName, None)

        # Use a instance of BytesIO to cache data
        fStringIO = BytesIO('')

        for Item in VfrUniOffsetList:
            if (Item[0].find("Strings") != -1):
                #
                # UNI offset in image.
                # GUID + Offset
                # { 0x8913c5e0, 0x33f6, 0x4d86, { 0x9b, 0xf1, 0x43, 0xef, 0x89, 0xfc, 0x6, 0x66 } }
                #
                UniGuid = [0xe0, 0xc5, 0x13, 0x89, 0xf6, 0x33, 0x86, 0x4d, 0x9b, 0xf1, 0x43, 0xef, 0x89, 0xfc, 0x6, 0x66]
                UniGuid = [chr(ItemGuid) for ItemGuid in UniGuid]
                fStringIO.write(''.join(UniGuid))
                UniValue = pack ('Q', int (Item[1], 16))
                fStringIO.write (UniValue)
            else:
                #
                # VFR binary offset in image.
                # GUID + Offset
                # { 0xd0bc7cb4, 0x6a47, 0x495f, { 0xaa, 0x11, 0x71, 0x7, 0x46, 0xda, 0x6, 0xa2 } };
                #
                VfrGuid = [0xb4, 0x7c, 0xbc, 0xd0, 0x47, 0x6a, 0x5f, 0x49, 0xaa, 0x11, 0x71, 0x7, 0x46, 0xda, 0x6, 0xa2]
                VfrGuid = [chr(ItemGuid) for ItemGuid in VfrGuid]
                fStringIO.write(''.join(VfrGuid))
                VfrValue = pack ('Q', int (Item[1], 16))
                fStringIO.write (VfrValue)
        #
        # write data into file.
        #
        try :
            fInputfile.write (fStringIO.getvalue())
        except:
            EdkLogger.error("build", FILE_WRITE_FAILURE, "Write data to file %s failed, please check whether the "
                            "file been locked or using by other applications." %UniVfrOffsetFileName, None)

        fStringIO.close ()
        fInputfile.close ()
        return OutputName

    ## Create AsBuilt INF file the module
    #
    def CreateAsBuiltInf(self, IsOnlyCopy = False):
        self.OutputFile = set()
        if IsOnlyCopy and GlobalData.gBinCacheDest:
            self.CopyModuleToCache()
            return

        if self.IsAsBuiltInfCreated:
            return

        # Skip the following code for EDK I inf
        if self.AutoGenVersion < 0x00010005:
            return

        # Skip the following code for libraries
        if self.IsLibrary:
            return

        # Skip the following code for modules with no source files
        if not self.SourceFileList:
            return

        # Skip the following code for modules without any binary files
        if self.BinaryFileList:
            return

        ### TODO: How to handles mixed source and binary modules

        # Find all DynamicEx and PatchableInModule PCDs used by this module and dependent libraries
        # Also find all packages that the DynamicEx PCDs depend on
        Pcds = []
        PatchablePcds = []
        Packages = []
        PcdCheckList = []
        PcdTokenSpaceList = []
        for Pcd in self.ModulePcdList + self.LibraryPcdList:
            if Pcd.Type == TAB_PCDS_PATCHABLE_IN_MODULE:
                PatchablePcds.append(Pcd)
                PcdCheckList.append((Pcd.TokenCName, Pcd.TokenSpaceGuidCName, TAB_PCDS_PATCHABLE_IN_MODULE))
            elif Pcd.Type in PCD_DYNAMIC_EX_TYPE_SET:
                if Pcd not in Pcds:
                    Pcds.append(Pcd)
                    PcdCheckList.append((Pcd.TokenCName, Pcd.TokenSpaceGuidCName, TAB_PCDS_DYNAMIC_EX))
                    PcdCheckList.append((Pcd.TokenCName, Pcd.TokenSpaceGuidCName, TAB_PCDS_DYNAMIC))
                    PcdTokenSpaceList.append(Pcd.TokenSpaceGuidCName)
        GuidList = OrderedDict(self.GuidList)
        for TokenSpace in self.GetGuidsUsedByPcd:
            # If token space is not referred by patch PCD or Ex PCD, remove the GUID from GUID list
            # The GUIDs in GUIDs section should really be the GUIDs in source INF or referred by Ex an patch PCDs
            if TokenSpace not in PcdTokenSpaceList and TokenSpace in GuidList:
                GuidList.pop(TokenSpace)
        CheckList = (GuidList, self.PpiList, self.ProtocolList, PcdCheckList)
        for Package in self.DerivedPackageList:
            if Package in Packages:
                continue
            BeChecked = (Package.Guids, Package.Ppis, Package.Protocols, Package.Pcds)
            Found = False
            for Index in range(len(BeChecked)):
                for Item in CheckList[Index]:
                    if Item in BeChecked[Index]:
                        Packages.append(Package)
                        Found = True
                        break
                if Found:
                    break

        VfrPcds = self._GetPcdsMaybeUsedByVfr()
        for Pkg in self.PlatformInfo.PackageList:
            if Pkg in Packages:
                continue
            for VfrPcd in VfrPcds:
                if ((VfrPcd.TokenCName, VfrPcd.TokenSpaceGuidCName, TAB_PCDS_DYNAMIC_EX) in Pkg.Pcds or
                    (VfrPcd.TokenCName, VfrPcd.TokenSpaceGuidCName, TAB_PCDS_DYNAMIC) in Pkg.Pcds):
                    Packages.append(Pkg)
                    break

        ModuleType = SUP_MODULE_DXE_DRIVER if self.ModuleType == SUP_MODULE_UEFI_DRIVER and self.DepexGenerated else self.ModuleType
        DriverType = self.PcdIsDriver if self.PcdIsDriver else ''
        Guid = self.Guid
        MDefs = self.Module.Defines

        AsBuiltInfDict = {
          'module_name'                       : self.Name,
          'module_guid'                       : Guid,
          'module_module_type'                : ModuleType,
          'module_version_string'             : [MDefs['VERSION_STRING']] if 'VERSION_STRING' in MDefs else [],
          'pcd_is_driver_string'              : [],
          'module_uefi_specification_version' : [],
          'module_pi_specification_version'   : [],
          'module_entry_point'                : self.Module.ModuleEntryPointList,
          'module_unload_image'               : self.Module.ModuleUnloadImageList,
          'module_constructor'                : self.Module.ConstructorList,
          'module_destructor'                 : self.Module.DestructorList,
          'module_shadow'                     : [MDefs['SHADOW']] if 'SHADOW' in MDefs else [],
          'module_pci_vendor_id'              : [MDefs['PCI_VENDOR_ID']] if 'PCI_VENDOR_ID' in MDefs else [],
          'module_pci_device_id'              : [MDefs['PCI_DEVICE_ID']] if 'PCI_DEVICE_ID' in MDefs else [],
          'module_pci_class_code'             : [MDefs['PCI_CLASS_CODE']] if 'PCI_CLASS_CODE' in MDefs else [],
          'module_pci_revision'               : [MDefs['PCI_REVISION']] if 'PCI_REVISION' in MDefs else [],
          'module_build_number'               : [MDefs['BUILD_NUMBER']] if 'BUILD_NUMBER' in MDefs else [],
          'module_spec'                       : [MDefs['SPEC']] if 'SPEC' in MDefs else [],
          'module_uefi_hii_resource_section'  : [MDefs['UEFI_HII_RESOURCE_SECTION']] if 'UEFI_HII_RESOURCE_SECTION' in MDefs else [],
          'module_uni_file'                   : [MDefs['MODULE_UNI_FILE']] if 'MODULE_UNI_FILE' in MDefs else [],
          'module_arch'                       : self.Arch,
          'package_item'                      : [Package.MetaFile.File.replace('\\', '/') for Package in Packages],
          'binary_item'                       : [],
          'patchablepcd_item'                 : [],
          'pcd_item'                          : [],
          'protocol_item'                     : [],
          'ppi_item'                          : [],
          'guid_item'                         : [],
          'flags_item'                        : [],
          'libraryclasses_item'               : []
        }

        if 'MODULE_UNI_FILE' in MDefs:
            UNIFile = os.path.join(self.MetaFile.Dir, MDefs['MODULE_UNI_FILE'])
            if os.path.isfile(UNIFile):
                shutil.copy2(UNIFile, self.OutputDir)

        if self.AutoGenVersion > int(gInfSpecVersion, 0):
            AsBuiltInfDict['module_inf_version'] = '0x%08x' % self.AutoGenVersion
        else:
            AsBuiltInfDict['module_inf_version'] = gInfSpecVersion

        if DriverType:
            AsBuiltInfDict['pcd_is_driver_string'].append(DriverType)

        if 'UEFI_SPECIFICATION_VERSION' in self.Specification:
            AsBuiltInfDict['module_uefi_specification_version'].append(self.Specification['UEFI_SPECIFICATION_VERSION'])
        if 'PI_SPECIFICATION_VERSION' in self.Specification:
            AsBuiltInfDict['module_pi_specification_version'].append(self.Specification['PI_SPECIFICATION_VERSION'])

        OutputDir = self.OutputDir.replace('\\', '/').strip('/')
        DebugDir = self.DebugDir.replace('\\', '/').strip('/')
        for Item in self.CodaTargetList:
            File = Item.Target.Path.replace('\\', '/').strip('/').replace(DebugDir, '').replace(OutputDir, '').strip('/')
            self.OutputFile.add(File)
            if os.path.isabs(File):
                File = File.replace('\\', '/').strip('/').replace(OutputDir, '').strip('/')
            if Item.Target.Ext.lower() == '.aml':
                AsBuiltInfDict['binary_item'].append('ASL|' + File)
            elif Item.Target.Ext.lower() == '.acpi':
                AsBuiltInfDict['binary_item'].append('ACPI|' + File)
            elif Item.Target.Ext.lower() == '.efi':
                AsBuiltInfDict['binary_item'].append('PE32|' + self.Name + '.efi')
            else:
                AsBuiltInfDict['binary_item'].append('BIN|' + File)
        if self.DepexGenerated:
            self.OutputFile.add(self.Name + '.depex')
            if self.ModuleType in [SUP_MODULE_PEIM]:
                AsBuiltInfDict['binary_item'].append('PEI_DEPEX|' + self.Name + '.depex')
            elif self.ModuleType in [SUP_MODULE_DXE_DRIVER, SUP_MODULE_DXE_RUNTIME_DRIVER, SUP_MODULE_DXE_SAL_DRIVER, SUP_MODULE_UEFI_DRIVER]:
                AsBuiltInfDict['binary_item'].append('DXE_DEPEX|' + self.Name + '.depex')
            elif self.ModuleType in [SUP_MODULE_DXE_SMM_DRIVER]:
                AsBuiltInfDict['binary_item'].append('SMM_DEPEX|' + self.Name + '.depex')

        Bin = self._GenOffsetBin()
        if Bin:
            AsBuiltInfDict['binary_item'].append('BIN|%s' % Bin)
            self.OutputFile.add(Bin)

        for Root, Dirs, Files in os.walk(OutputDir):
            for File in Files:
                if File.lower().endswith('.pdb'):
                    AsBuiltInfDict['binary_item'].append('DISPOSABLE|' + File)
                    self.OutputFile.add(File)
        HeaderComments = self.Module.HeaderComments
        StartPos = 0
        for Index in range(len(HeaderComments)):
            if HeaderComments[Index].find('@BinaryHeader') != -1:
                HeaderComments[Index] = HeaderComments[Index].replace('@BinaryHeader', '@file')
                StartPos = Index
                break
        AsBuiltInfDict['header_comments'] = '\n'.join(HeaderComments[StartPos:]).replace(':#', '://')
        AsBuiltInfDict['tail_comments'] = '\n'.join(self.Module.TailComments)

        GenList = [
            (self.ProtocolList, self._ProtocolComments, 'protocol_item'),
            (self.PpiList, self._PpiComments, 'ppi_item'),
            (GuidList, self._GuidComments, 'guid_item')
        ]
        for Item in GenList:
            for CName in Item[0]:
                Comments = '\n  '.join(Item[1][CName]) if CName in Item[1] else ''
                Entry = Comments + '\n  ' + CName if Comments else CName
                AsBuiltInfDict[Item[2]].append(Entry)
        PatchList = parsePcdInfoFromMapFile(
                            os.path.join(self.OutputDir, self.Name + '.map'),
                            os.path.join(self.OutputDir, self.Name + '.efi')
                        )
        if PatchList:
            for Pcd in PatchablePcds:
                TokenCName = Pcd.TokenCName
                for PcdItem in GlobalData.MixedPcd:
                    if (Pcd.TokenCName, Pcd.TokenSpaceGuidCName) in GlobalData.MixedPcd[PcdItem]:
                        TokenCName = PcdItem[0]
                        break
                for PatchPcd in PatchList:
                    if TokenCName == PatchPcd[0]:
                        break
                else:
                    continue
                PcdValue = ''
                if Pcd.DatumType == 'BOOLEAN':
                    BoolValue = Pcd.DefaultValue.upper()
                    if BoolValue == 'TRUE':
                        Pcd.DefaultValue = '1'
                    elif BoolValue == 'FALSE':
                        Pcd.DefaultValue = '0'

                if Pcd.DatumType in TAB_PCD_NUMERIC_TYPES:
                    HexFormat = '0x%02x'
                    if Pcd.DatumType == TAB_UINT16:
                        HexFormat = '0x%04x'
                    elif Pcd.DatumType == TAB_UINT32:
                        HexFormat = '0x%08x'
                    elif Pcd.DatumType == TAB_UINT64:
                        HexFormat = '0x%016x'
                    PcdValue = HexFormat % int(Pcd.DefaultValue, 0)
                else:
                    if Pcd.MaxDatumSize is None or Pcd.MaxDatumSize == '':
                        EdkLogger.error("build", AUTOGEN_ERROR,
                                        "Unknown [MaxDatumSize] of PCD [%s.%s]" % (Pcd.TokenSpaceGuidCName, TokenCName)
                                        )
                    ArraySize = int(Pcd.MaxDatumSize, 0)
                    PcdValue = Pcd.DefaultValue
                    if PcdValue[0] != '{':
                        Unicode = False
                        if PcdValue[0] == 'L':
                            Unicode = True
                        PcdValue = PcdValue.lstrip('L')
                        PcdValue = eval(PcdValue)
                        NewValue = '{'
                        for Index in range(0, len(PcdValue)):
                            if Unicode:
                                CharVal = ord(PcdValue[Index])
                                NewValue = NewValue + '0x%02x' % (CharVal & 0x00FF) + ', ' \
                                        + '0x%02x' % (CharVal >> 8) + ', '
                            else:
                                NewValue = NewValue + '0x%02x' % (ord(PcdValue[Index]) % 0x100) + ', '
                        Padding = '0x00, '
                        if Unicode:
                            Padding = Padding * 2
                            ArraySize = ArraySize / 2
                        if ArraySize < (len(PcdValue) + 1):
                            if Pcd.MaxSizeUserSet:
                                EdkLogger.error("build", AUTOGEN_ERROR,
                                            "The maximum size of VOID* type PCD '%s.%s' is less than its actual size occupied." % (Pcd.TokenSpaceGuidCName, TokenCName)
                                            )
                            else:
                                ArraySize = len(PcdValue) + 1
                        if ArraySize > len(PcdValue) + 1:
                            NewValue = NewValue + Padding * (ArraySize - len(PcdValue) - 1)
                        PcdValue = NewValue + Padding.strip().rstrip(',') + '}'
                    elif len(PcdValue.split(',')) <= ArraySize:
                        PcdValue = PcdValue.rstrip('}') + ', 0x00' * (ArraySize - len(PcdValue.split(',')))
                        PcdValue += '}'
                    else:
                        if Pcd.MaxSizeUserSet:
                            EdkLogger.error("build", AUTOGEN_ERROR,
                                        "The maximum size of VOID* type PCD '%s.%s' is less than its actual size occupied." % (Pcd.TokenSpaceGuidCName, TokenCName)
                                        )
                        else:
                            ArraySize = len(PcdValue) + 1
                PcdItem = '%s.%s|%s|0x%X' % \
                    (Pcd.TokenSpaceGuidCName, TokenCName, PcdValue, PatchPcd[1])
                PcdComments = ''
                if (Pcd.TokenSpaceGuidCName, Pcd.TokenCName) in self._PcdComments:
                    PcdComments = '\n  '.join(self._PcdComments[Pcd.TokenSpaceGuidCName, Pcd.TokenCName])
                if PcdComments:
                    PcdItem = PcdComments + '\n  ' + PcdItem
                AsBuiltInfDict['patchablepcd_item'].append(PcdItem)

        for Pcd in Pcds + VfrPcds:
            PcdCommentList = []
            HiiInfo = ''
            TokenCName = Pcd.TokenCName
            for PcdItem in GlobalData.MixedPcd:
                if (Pcd.TokenCName, Pcd.TokenSpaceGuidCName) in GlobalData.MixedPcd[PcdItem]:
                    TokenCName = PcdItem[0]
                    break
            if Pcd.Type == TAB_PCDS_DYNAMIC_EX_HII:
                for SkuName in Pcd.SkuInfoList:
                    SkuInfo = Pcd.SkuInfoList[SkuName]
                    HiiInfo = '## %s|%s|%s' % (SkuInfo.VariableName, SkuInfo.VariableGuid, SkuInfo.VariableOffset)
                    break
            if (Pcd.TokenSpaceGuidCName, Pcd.TokenCName) in self._PcdComments:
                PcdCommentList = self._PcdComments[Pcd.TokenSpaceGuidCName, Pcd.TokenCName][:]
            if HiiInfo:
                UsageIndex = -1
                UsageStr = ''
                for Index, Comment in enumerate(PcdCommentList):
                    for Usage in UsageList:
                        if Comment.find(Usage) != -1:
                            UsageStr = Usage
                            UsageIndex = Index
                            break
                if UsageIndex != -1:
                    PcdCommentList[UsageIndex] = '## %s %s %s' % (UsageStr, HiiInfo, PcdCommentList[UsageIndex].replace(UsageStr, ''))
                else:
                    PcdCommentList.append('## UNDEFINED ' + HiiInfo)
            PcdComments = '\n  '.join(PcdCommentList)
            PcdEntry = Pcd.TokenSpaceGuidCName + '.' + TokenCName
            if PcdComments:
                PcdEntry = PcdComments + '\n  ' + PcdEntry
            AsBuiltInfDict['pcd_item'].append(PcdEntry)
        for Item in self.BuildOption:
            if 'FLAGS' in self.BuildOption[Item]:
                AsBuiltInfDict['flags_item'].append('%s:%s_%s_%s_%s_FLAGS = %s' % (self.ToolChainFamily, self.BuildTarget, self.ToolChain, self.Arch, Item, self.BuildOption[Item]['FLAGS'].strip()))

        # Generated LibraryClasses section in comments.
        for Library in self.LibraryAutoGenList:
            AsBuiltInfDict['libraryclasses_item'].append(Library.MetaFile.File.replace('\\', '/'))

        # Generated UserExtensions TianoCore section.
        # All tianocore user extensions are copied.
        UserExtStr = ''
        for TianoCore in self._GetTianoCoreUserExtensionList():
            UserExtStr += '\n'.join(TianoCore)
            ExtensionFile = os.path.join(self.MetaFile.Dir, TianoCore[1])
            if os.path.isfile(ExtensionFile):
                shutil.copy2(ExtensionFile, self.OutputDir)
        AsBuiltInfDict['userextension_tianocore_item'] = UserExtStr

        # Generated depex expression section in comments.
        DepexExpresion = self._GetDepexExpresionString()
        AsBuiltInfDict['depexsection_item'] = DepexExpresion if DepexExpresion else ''

        AsBuiltInf = TemplateString()
        AsBuiltInf.Append(gAsBuiltInfHeaderString.Replace(AsBuiltInfDict))

        SaveFileOnChange(os.path.join(self.OutputDir, self.Name + '.inf'), str(AsBuiltInf), False)

        self.IsAsBuiltInfCreated = True
        if GlobalData.gBinCacheDest:
            self.CopyModuleToCache()

    def CopyModuleToCache(self):
        FileDir = path.join(GlobalData.gBinCacheDest, self.Arch, self.SourceDir, self.MetaFile.BaseName)
        CreateDirectory (FileDir)
        HashFile = path.join(self.BuildDir, self.Name + '.hash')
        ModuleFile = path.join(self.OutputDir, self.Name + '.inf')
        if os.path.exists(HashFile):
            shutil.copy2(HashFile, FileDir)
        if os.path.exists(ModuleFile):
            shutil.copy2(ModuleFile, FileDir)
        if not self.OutputFile:
            Ma = self.Workspace.BuildDatabase[PathClass(ModuleFile), self.Arch, self.BuildTarget, self.ToolChain]
            self.OutputFile = Ma.Binaries
        if self.OutputFile:
            for File in self.OutputFile:
                File = str(File)
                if not os.path.isabs(File):
                    File = os.path.join(self.OutputDir, File)
                if os.path.exists(File):
                    shutil.copy2(File, FileDir)

    def AttemptModuleCacheCopy(self):
        if self.IsBinaryModule:
            return False
        FileDir = path.join(GlobalData.gBinCacheSource, self.Arch, self.SourceDir, self.MetaFile.BaseName)
        HashFile = path.join(FileDir, self.Name + '.hash')
        if os.path.exists(HashFile):
            f = open(HashFile, 'r')
            CacheHash = f.read()
            f.close()
            if GlobalData.gModuleHash[self.Arch][self.Name]:
                if CacheHash == GlobalData.gModuleHash[self.Arch][self.Name]:
                    for root, dir, files in os.walk(FileDir):
                        for f in files:
                            if self.Name + '.hash' in f:
                                shutil.copy2(HashFile, self.BuildDir)
                            else:
                                File = path.join(root, f)
                                shutil.copy2(File, self.OutputDir)
                    if self.Name == "PcdPeim" or self.Name == "PcdDxe":
                        CreatePcdDatabaseCode(self, TemplateString(), TemplateString())
                    return True
        return False

    ## Create makefile for the module and its dependent libraries
    #
    #   @param      CreateLibraryMakeFile   Flag indicating if or not the makefiles of
    #                                       dependent libraries will be created
    #
    def CreateMakeFile(self, CreateLibraryMakeFile=True, GenFfsList = []):
        # Ignore generating makefile when it is a binary module
        if self.IsBinaryModule:
            return

        if self.IsMakeFileCreated:
            return
        self.GenFfsList = GenFfsList
        if not self.IsLibrary and CreateLibraryMakeFile:
            for LibraryAutoGen in self.LibraryAutoGenList:
                LibraryAutoGen.CreateMakeFile()

        if self.CanSkip():
            return

        if len(self.CustomMakefile) == 0:
            Makefile = GenMake.ModuleMakefile(self)
        else:
            Makefile = GenMake.CustomMakefile(self)
        if Makefile.Generate():
            EdkLogger.debug(EdkLogger.DEBUG_9, "Generated makefile for module %s [%s]" %
                            (self.Name, self.Arch))
        else:
            EdkLogger.debug(EdkLogger.DEBUG_9, "Skipped the generation of makefile for module %s [%s]" %
                            (self.Name, self.Arch))

        self.CreateTimeStamp()
        self.IsMakeFileCreated = True

    def CopyBinaryFiles(self):
        for File in self.Module.Binaries:
            SrcPath = File.Path
            DstPath = os.path.join(self.OutputDir, os.path.basename(SrcPath))
            CopyLongFilePath(SrcPath, DstPath)
    ## Create autogen code for the module and its dependent libraries
    #
    #   @param      CreateLibraryCodeFile   Flag indicating if or not the code of
    #                                       dependent libraries will be created
    #
    def CreateCodeFile(self, CreateLibraryCodeFile=True):
        if self.IsCodeFileCreated:
            return

        # Need to generate PcdDatabase even PcdDriver is binarymodule
        if self.IsBinaryModule and self.PcdIsDriver != '':
            CreatePcdDatabaseCode(self, TemplateString(), TemplateString())
            return
        if self.IsBinaryModule:
            if self.IsLibrary:
                self.CopyBinaryFiles()
            return

        if not self.IsLibrary and CreateLibraryCodeFile:
            for LibraryAutoGen in self.LibraryAutoGenList:
                LibraryAutoGen.CreateCodeFile()

        if self.CanSkip():
            return

        AutoGenList = []
        IgoredAutoGenList = []

        for File in self.AutoGenFileList:
            if GenC.Generate(File.Path, self.AutoGenFileList[File], File.IsBinary):
                #Ignore Edk AutoGen.c
                if self.AutoGenVersion < 0x00010005 and File.Name == 'AutoGen.c':
                        continue

                AutoGenList.append(str(File))
            else:
                IgoredAutoGenList.append(str(File))

        # Skip the following code for EDK I inf
        if self.AutoGenVersion < 0x00010005:
            return

        for ModuleType in self.DepexList:
            # Ignore empty [depex] section or [depex] section for SUP_MODULE_USER_DEFINED module
            if len(self.DepexList[ModuleType]) == 0 or ModuleType == SUP_MODULE_USER_DEFINED:
                continue

            Dpx = GenDepex.DependencyExpression(self.DepexList[ModuleType], ModuleType, True)
            DpxFile = gAutoGenDepexFileName % {"module_name" : self.Name}

            if len(Dpx.PostfixNotation) != 0:
                self.DepexGenerated = True

            if Dpx.Generate(path.join(self.OutputDir, DpxFile)):
                AutoGenList.append(str(DpxFile))
            else:
                IgoredAutoGenList.append(str(DpxFile))

        if IgoredAutoGenList == []:
            EdkLogger.debug(EdkLogger.DEBUG_9, "Generated [%s] files for module %s [%s]" %
                            (" ".join(AutoGenList), self.Name, self.Arch))
        elif AutoGenList == []:
            EdkLogger.debug(EdkLogger.DEBUG_9, "Skipped the generation of [%s] files for module %s [%s]" %
                            (" ".join(IgoredAutoGenList), self.Name, self.Arch))
        else:
            EdkLogger.debug(EdkLogger.DEBUG_9, "Generated [%s] (skipped %s) files for module %s [%s]" %
                            (" ".join(AutoGenList), " ".join(IgoredAutoGenList), self.Name, self.Arch))

        self.IsCodeFileCreated = True
        return AutoGenList

    ## Summarize the ModuleAutoGen objects of all libraries used by this module
    @cached_property
    def LibraryAutoGenList(self):
        RetVal = []
        for Library in self.DependentLibraryList:
            La = ModuleAutoGen(
                        self.Workspace,
                        Library.MetaFile,
                        self.BuildTarget,
                        self.ToolChain,
                        self.Arch,
                        self.PlatformInfo.MetaFile
                        )
            if La not in RetVal:
                RetVal.append(La)
                for Lib in La.CodaTargetList:
                    self._ApplyBuildRule(Lib.Target, TAB_UNKNOWN_FILE)
        return RetVal

    def GenModuleHash(self):
        if self.Arch not in GlobalData.gModuleHash:
            GlobalData.gModuleHash[self.Arch] = {}
        m = hashlib.md5()
        # Add Platform level hash
        m.update(GlobalData.gPlatformHash)
        # Add Package level hash
        if self.DependentPackageList:
            for Pkg in sorted(self.DependentPackageList, key=lambda x: x.PackageName):
                if Pkg.PackageName in GlobalData.gPackageHash[self.Arch]:
                    m.update(GlobalData.gPackageHash[self.Arch][Pkg.PackageName])

        # Add Library hash
        if self.LibraryAutoGenList:
            for Lib in sorted(self.LibraryAutoGenList, key=lambda x: x.Name):
                if Lib.Name not in GlobalData.gModuleHash[self.Arch]:
                    Lib.GenModuleHash()
                m.update(GlobalData.gModuleHash[self.Arch][Lib.Name])

        # Add Module self
        f = open(str(self.MetaFile), 'r')
        Content = f.read()
        f.close()
        m.update(Content)
        # Add Module's source files
        if self.SourceFileList:
            for File in sorted(self.SourceFileList, key=lambda x: str(x)):
                f = open(str(File), 'r')
                Content = f.read()
                f.close()
                m.update(Content)

        ModuleHashFile = path.join(self.BuildDir, self.Name + ".hash")
        if self.Name not in GlobalData.gModuleHash[self.Arch]:
            GlobalData.gModuleHash[self.Arch][self.Name] = m.hexdigest()
        if GlobalData.gBinCacheSource:
            if self.AttemptModuleCacheCopy():
                return False
        return SaveFileOnChange(ModuleHashFile, m.hexdigest(), True)

    ## Decide whether we can skip the ModuleAutoGen process
    def CanSkipbyHash(self):
        if GlobalData.gUseHashCache:
            return not self.GenModuleHash()
        return False

    ## Decide whether we can skip the ModuleAutoGen process
    #  If any source file is newer than the module than we cannot skip
    #
    def CanSkip(self):
        if self.MakeFileDir in GlobalData.gSikpAutoGenCache:
            return True
        if not os.path.exists(self.TimeStampPath):
            return False
        #last creation time of the module
        DstTimeStamp = os.stat(self.TimeStampPath)[8]

        SrcTimeStamp = self.Workspace._SrcTimeStamp
        if SrcTimeStamp > DstTimeStamp:
            return False

        with open(self.TimeStampPath,'r') as f:
            for source in f:
                source = source.rstrip('\n')
                if not os.path.exists(source):
                    return False
                if source not in ModuleAutoGen.TimeDict :
                    ModuleAutoGen.TimeDict[source] = os.stat(source)[8]
                if ModuleAutoGen.TimeDict[source] > DstTimeStamp:
                    return False
        GlobalData.gSikpAutoGenCache.add(self.MakeFileDir)
        return True

    @cached_property
    def TimeStampPath(self):
        return os.path.join(self.MakeFileDir, 'AutoGenTimeStamp')

    def CreateTimeStamp(self):
        FileSet = {self.MetaFile.Path}

        for SourceFile in self.Module.Sources:
            FileSet.add (SourceFile.Path)

        for Lib in self.DependentLibraryList:
            FileSet.add (Lib.MetaFile.Path)

        for f in self.AutoGenDepSet:
            FileSet.add (f.Path)

        if os.path.exists (self.TimeStampPath):
            os.remove (self.TimeStampPath)
        with open(self.TimeStampPath, 'w+') as file:
            for f in FileSet:
                print(f, file=file)