diff --git a/libfdt/rules.mk b/libfdt/rules.mk
new file mode 100644
index 0000000..c785aa2
--- /dev/null
+++ b/libfdt/rules.mk
@@ -0,0 +1,53 @@
+# Copyright (c) 2022, Google, Inc. All rights reserved
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# This file is not used in the Android build process! It's used only by Trusty.
+
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+MODULE := $(LOCAL_DIR)
+
+MODULE_SRCS := \
+	$(LOCAL_DIR)/fdt.c \
+	$(LOCAL_DIR)/fdt_check.c \
+	$(LOCAL_DIR)/fdt_ro.c \
+	$(LOCAL_DIR)/fdt_wip.c \
+	$(LOCAL_DIR)/fdt_sw.c \
+	$(LOCAL_DIR)/fdt_rw.c \
+	$(LOCAL_DIR)/fdt_strerror.c \
+	$(LOCAL_DIR)/fdt_empty_tree.c \
+	$(LOCAL_DIR)/fdt_addresses.c \
+	$(LOCAL_DIR)/fdt_overlay.c \
+	$(LOCAL_DIR)/acpi.c \
+
+
+MODULE_COMPILEFLAGS += \
+	-Wno-sign-compare \
+	-Wno-macro-redefined \
+
+MODULE_EXPORT_INCLUDES += \
+	$(LOCAL_DIR) \
+
+include make/library.mk