This change modularizes the Ext4 DSC/FDF files following the model used
in edk2/NetworkPkg.

A platform DSC can include Ext4 using "!include Features/Ext4.dsc.inc".
Ext.dsc.inc includes all the required information to enable Ext4
features.  Similarly, "!include Features/Ext4.fdf.inc" would be used in
the platform FDF.

The Ext4 feature is enabled by default, but could be disabled at build
time using:

    BLD_*_EXT4_ENABLE=FALSE

Signed-off-by: Jake Garver <jake@nvidia.com>
---
 Features/Ext4Pkg/Ext4.dsc.inc           | 16 ++++++++++++++++
 Features/Ext4Pkg/Ext4.fdf.inc           | 11 +++++++++++
 Features/Ext4Pkg/Ext4Components.dsc.inc | 14 ++++++++++++++
 Features/Ext4Pkg/Ext4Defines.dsc.inc    | 14 ++++++++++++++
 Features/Ext4Pkg/Ext4Libs.dsc.inc       | 11 +++++++++++
 5 files changed, 66 insertions(+)
 create mode 100644 Features/Ext4Pkg/Ext4.dsc.inc
 create mode 100644 Features/Ext4Pkg/Ext4.fdf.inc
 create mode 100644 Features/Ext4Pkg/Ext4Components.dsc.inc
 create mode 100644 Features/Ext4Pkg/Ext4Defines.dsc.inc
 create mode 100644 Features/Ext4Pkg/Ext4Libs.dsc.inc

diff --git a/Features/Ext4Pkg/Ext4.dsc.inc b/Features/Ext4Pkg/Ext4.dsc.inc
new file mode 100644
index 0000000000..b560b9acbb
--- /dev/null
+++ b/Features/Ext4Pkg/Ext4.dsc.inc
@@ -0,0 +1,16 @@
+## @file
+# Ext4 DSC include file for Platform DSC
+#
+# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+!include Features/Ext4Pkg/Ext4Defines.dsc.inc
+
+[LibraryClasses]
+!include Features/Ext4Pkg/Ext4Libs.dsc.inc
+
+[Components.common]
+!include Features/Ext4Pkg/Ext4Components.dsc.inc
diff --git a/Features/Ext4Pkg/Ext4.fdf.inc b/Features/Ext4Pkg/Ext4.fdf.inc
new file mode 100644
index 0000000000..fb36070860
--- /dev/null
+++ b/Features/Ext4Pkg/Ext4.fdf.inc
@@ -0,0 +1,11 @@
+## @file
+# Ext4 FDF include file for All Architectures.
+#
+# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+!if $(EXT4_ENABLE) == TRUE
+  INF Features/Ext4Pkg/Ext4Dxe/Ext4Dxe.inf
+!endif
diff --git a/Features/Ext4Pkg/Ext4Components.dsc.inc b/Features/Ext4Pkg/Ext4Components.dsc.inc
new file mode 100644
index 0000000000..34401272a0
--- /dev/null
+++ b/Features/Ext4Pkg/Ext4Components.dsc.inc
@@ -0,0 +1,14 @@
+## @file
+# Ext4 DSC include file for [Components] section of all Architectures.
+#
+# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+!if $(EXT4_ENABLE) == TRUE
+  Features/Ext4Pkg/Ext4Dxe/Ext4Dxe.inf {
+    <PcdsFixedAtBuild>
+      gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|0x80000007
+  }
+!endif
diff --git a/Features/Ext4Pkg/Ext4Defines.dsc.inc b/Features/Ext4Pkg/Ext4Defines.dsc.inc
new file mode 100644
index 0000000000..b02eac59cf
--- /dev/null
+++ b/Features/Ext4Pkg/Ext4Defines.dsc.inc
@@ -0,0 +1,14 @@
+## @file
+# Ext4 DSC include file for [Defines] section of all Architectures.
+#
+# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+!ifndef EXT4_ENABLE
+  #
+  # This flag is to enable or disable the ext4 feature.
+  #
+  DEFINE EXT4_ENABLE = TRUE
+!endif
diff --git a/Features/Ext4Pkg/Ext4Libs.dsc.inc b/Features/Ext4Pkg/Ext4Libs.dsc.inc
new file mode 100644
index 0000000000..078183e0cc
--- /dev/null
+++ b/Features/Ext4Pkg/Ext4Libs.dsc.inc
@@ -0,0 +1,11 @@
+## @file
+# Ext4 DSC include file for [LibraryClasses] section of all Architectures.
+#
+# SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+!if $(EXT4_ENABLE) == TRUE
+  BaseUcs2Utf8Lib|RedfishPkg/Library/BaseUcs2Utf8Lib/BaseUcs2Utf8Lib.inf
+!endif
--
2.17.1