diff --git a/vintfdata/Android.mk b/vintfdata/Android.mk
index d873e29..a7721c2 100644
--- a/vintfdata/Android.mk
+++ b/vintfdata/Android.mk
@@ -128,3 +128,5 @@
 SYSTEM_EXT_MANIFEST_INPUT_FILES :=
 DEVICE_MATRIX_INPUT_FILE :=
 PRODUCT_MANIFEST_INPUT_FILES :=
+
+VINTF_FRAMEWORK_MANIFEST_FROZEN_DIR := $(LOCAL_PATH)/frozen
diff --git a/vintfdata/freeze.sh b/vintfdata/freeze.sh
new file mode 100755
index 0000000..a624ee3
--- /dev/null
+++ b/vintfdata/freeze.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+mydir="$(dirname $0)"
+
+function freeze() {
+  [[ $# == 1 ]] || {
+    echo "usage: freeze.sh <level>"
+    echo "e.g. To freeze framework manifest for Android R, run:"
+    echo "  freeze.sh 5"
+    return 1
+  }
+  local level="$1"
+  [[ "${ANDROID_BUILD_TOP}" ]] || {
+    echo "ANDROID_BUILD_TOP is not set; did you run envsetup.sh?"
+    return 1
+  }
+  [[ "${ANDROID_HOST_OUT}" ]] || {
+    echo "ANDROID_HOST_OUT is not set; did you run envsetup.sh?"
+    return 1
+  }
+
+  local modules_to_build=check-vintf-all
+  echo "Building ${modules_to_build}"
+  "${ANDROID_BUILD_TOP}/build/soong/soong_ui.bash" --build-mode --all-modules --dir="$(pwd)" ${modules_to_build} || {
+    echo "${modules_to_build} failed. Backwards compatibility might be broken."
+    echo "Check framework manifest changes. If this is intentional, run "
+    echo "  \`vintffm --update\` with appropriate options to update frozen files."
+    return 1
+  }
+
+  echo "Updating level ${level}"
+  "${ANDROID_HOST_OUT}/bin/vintffm" --update --level "${level}" --dirmap "/system:${ANDROID_PRODUCT_OUT}/system" "${mydir}/frozen" || return 1
+
+  local files_to_diff="$(printf "${mydir}/frozen/%s\n" $(ls -1 -t -r ${mydir}/frozen | xargs -I{} basename {} | grep -B1 "${level}.xml"))"
+
+  echo
+  echo "Summary of changes:"
+  echo diff ${files_to_diff}
+  diff ${files_to_diff} || true
+}
+
+freeze $@
diff --git a/vintfdata/frozen/5.xml b/vintfdata/frozen/5.xml
new file mode 100644
index 0000000..9c52d07
--- /dev/null
+++ b/vintfdata/frozen/5.xml
@@ -0,0 +1,106 @@
+<compatibility-matrix version="3.0" type="device">
+    <hal format="hidl" optional="false">
+        <name>android.frameworks.cameraservice.service</name>
+        <version>2.1</version>
+        <interface>
+            <name>ICameraService</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.frameworks.displayservice</name>
+        <version>1.0</version>
+        <interface>
+            <name>IDisplayService</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.frameworks.schedulerservice</name>
+        <version>1.0</version>
+        <interface>
+            <name>ISchedulingPolicyService</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.frameworks.sensorservice</name>
+        <version>1.0</version>
+        <interface>
+            <name>ISensorManager</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.frameworks.stats</name>
+        <version>1.0</version>
+        <interface>
+            <name>IStats</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.media.c2</name>
+        <version>1.1</version>
+        <interface>
+            <name>IComponentStore</name>
+            <instance>software</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hidl.allocator</name>
+        <version>1.0</version>
+        <interface>
+            <name>IAllocator</name>
+            <instance>ashmem</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hidl.manager</name>
+        <version>1.2</version>
+        <interface>
+            <name>IServiceManager</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hidl.memory</name>
+        <version>1.0</version>
+        <interface>
+            <name>IMapper</name>
+            <instance>ashmem</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hidl.token</name>
+        <version>1.0</version>
+        <interface>
+            <name>ITokenManager</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.system.net.netd</name>
+        <version>1.1</version>
+        <interface>
+            <name>INetd</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.system.suspend</name>
+        <version>1.0</version>
+        <interface>
+            <name>ISystemSuspend</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.system.wifi.keystore</name>
+        <version>1.0</version>
+        <interface>
+            <name>IKeystore</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</compatibility-matrix>