3 files changed, 5 insertions, 7 deletions
diff --git a/BaseTools/Source/Python/GenFds/FdfParser.py b/BaseTools/Source/Python/GenFds/FdfParser.py
index ea2401b0e4..5c8263f9bc 100644
--- a/BaseTools/Source/Python/GenFds/FdfParser.py
+++ b/BaseTools/Source/Python/GenFds/FdfParser.py
@@ -1,7 +1,7 @@
 ## @file
 # parse FDF file
 #
-#  Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2021, Intel Corporation. All rights reserved.<BR>
 #  Copyright (c) 2015, Hewlett Packard Enterprise Development, L.P.<BR>
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -3504,8 +3504,6 @@ class FdfParser:
             raise Warning.Expected("'.'", self.FileName, self.CurrentLineNumber)
 
         Arch = self._SkippedChars.rstrip(TAB_SPLIT)
-        if Arch.upper() not in ARCH_SET_FULL:
-            raise Warning("Unknown Arch '%s'" % Arch, self.FileName, self.CurrentLineNumber)
 
         ModuleType = self._GetModuleType()
 
diff --git a/BaseTools/Source/Python/TargetTool/TargetTool.py b/BaseTools/Source/Python/TargetTool/TargetTool.py
index 8e0ca387c3..71222e3cc8 100644
--- a/BaseTools/Source/Python/TargetTool/TargetTool.py
+++ b/BaseTools/Source/Python/TargetTool/TargetTool.py
@@ -1,7 +1,7 @@
 ## @file
 # Target Tool Parser
 #
-#  Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2021, Intel Corporation. All rights reserved.<BR>
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -197,7 +197,7 @@ def RangeCheckCallback(option, opt_str, value, parser):
 
 def MyOptionParser():
     parser = OptionParser(version=__version__, prog="TargetTool.exe", usage=__usage__, description=__copyright__)
-    parser.add_option("-a", "--arch", action="append", type="choice", choices=['IA32', 'X64', 'EBC', 'ARM', 'AARCH64', '0'], dest="TARGET_ARCH",
+    parser.add_option("-a", "--arch", action="append", dest="TARGET_ARCH",
         help="ARCHS is one of list: IA32, X64, ARM, AARCH64 or EBC, which replaces target.txt's TARGET_ARCH definition. To specify more archs, please repeat this option. 0 will clear this setting in target.txt and can't combine with other value.")
     parser.add_option("-p", "--platform", action="callback", type="string", dest="DSCFILE", callback=SingleCheckCallback,
         help="Specify a DSC file, which replace target.txt's ACTIVE_PLATFORM definition. 0 will clear this setting in target.txt and can't combine with other value.")
diff --git a/BaseTools/Source/Python/build/buildoptions.py b/BaseTools/Source/Python/build/buildoptions.py
index 094af4e2a8..39d92cff20 100644
--- a/BaseTools/Source/Python/build/buildoptions.py
+++ b/BaseTools/Source/Python/build/buildoptions.py
@@ -2,7 +2,7 @@
 # build a platform or a module
 #
 #  Copyright (c) 2014, Hewlett-Packard Development Company, L.P.<BR>
-#  Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2007 - 2021, Intel Corporation. All rights reserved.<BR>
 #  Copyright (c) 2018 - 2020, Hewlett Packard Enterprise Development, L.P.<BR>
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -40,7 +40,7 @@ class MyOptionParser():
 
     def GetOption(self):
         Parser = OptionParser(description=__copyright__, version=__version__, prog="build.exe", usage="%prog [options] [all|fds|genc|genmake|clean|cleanall|cleanlib|modules|libraries|run]")
-        Parser.add_option("-a", "--arch", action="append", type="choice", choices=['IA32', 'X64', 'EBC', 'ARM', 'AARCH64', 'RISCV64'], dest="TargetArch",
+        Parser.add_option("-a", "--arch", action="append", dest="TargetArch",
             help="ARCHS is one of list: IA32, X64, ARM, AARCH64, RISCV64 or EBC, which overrides target.txt's TARGET_ARCH definition. To specify more archs, please repeat this option.")
         Parser.add_option("-p", "--platform", action="callback", type="string", dest="PlatformFile", callback=SingleCheckCallback,
             help="Build the platform specified by the DSC file name argument, overriding target.txt's ACTIVE_PLATFORM definition.")