diff --git a/compatibility_matrices/Android.bp b/compatibility_matrices/Android.bp
index 7844ac8..712f28a 100644
--- a/compatibility_matrices/Android.bp
+++ b/compatibility_matrices/Android.bp
@@ -22,6 +22,19 @@
 }
 
 vintf_compatibility_matrix {
+    name: "framework_compatibility_matrix.4.xml",
+    stem: "compatibility_matrix.4.xml",
+    srcs: [
+        "compatibility_matrix.4.xml",
+    ],
+    kernel_configs: [
+        "kernel_config_q_4.14",
+        "kernel_config_q_4.19",
+    ],
+    core_hals: "only",
+}
+
+vintf_compatibility_matrix {
     name: "framework_compatibility_matrix.5.xml",
     stem: "compatibility_matrix.5.xml",
     srcs: [
diff --git a/compatibility_matrices/Android.mk b/compatibility_matrices/Android.mk
index e911aa0..c2ffb84 100644
--- a/compatibility_matrices/Android.mk
+++ b/compatibility_matrices/Android.mk
@@ -101,6 +101,7 @@
 endif # DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE
 
 my_system_matrix_deps := \
+    framework_compatibility_matrix.4.xml \
     framework_compatibility_matrix.5.xml \
     framework_compatibility_matrix.6.xml \
     framework_compatibility_matrix.7.xml \
diff --git a/compatibility_matrices/compatibility_matrix.4.xml b/compatibility_matrices/compatibility_matrix.4.xml
new file mode 100644
index 0000000..bb7637a
--- /dev/null
+++ b/compatibility_matrices/compatibility_matrix.4.xml
@@ -0,0 +1,525 @@
+<compatibility-matrix version="1.0" type="framework" level="4">
+    <hal format="hidl" optional="true">
+        <name>android.hardware.atrace</name>
+        <version>1.0</version>
+        <interface>
+            <name>IAtraceDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.audio</name>
+        <version>5.0</version>
+        <interface>
+            <name>IDevicesFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.audio.effect</name>
+        <version>5.0</version>
+        <interface>
+            <name>IEffectsFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.authsecret</name>
+        <version>1.0</version>
+        <interface>
+            <name>IAuthSecret</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.automotive.audiocontrol</name>
+        <version>1.0</version>
+        <interface>
+            <name>IAudioControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.automotive.evs</name>
+        <version>1.0</version>
+        <interface>
+            <name>IEvsEnumerator</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.automotive.vehicle</name>
+        <version>2.0</version>
+        <interface>
+            <name>IVehicle</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.biometrics.face</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBiometricsFace</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.biometrics.fingerprint</name>
+        <version>2.1</version>
+        <interface>
+            <name>IBiometricsFingerprint</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.bluetooth</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBluetoothHci</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.bluetooth.audio</name>
+        <version>2.0</version>
+        <interface>
+            <name>IBluetoothAudioProvidersFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.boot</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBootControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.broadcastradio</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>IBroadcastRadioFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.broadcastradio</name>
+        <version>2.0</version>
+        <interface>
+            <name>IBroadcastRadio</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.camera.provider</name>
+        <version>2.4-5</version>
+        <interface>
+            <name>ICameraProvider</name>
+            <regex-instance>[^/]+/[0-9]+</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.cas</name>
+        <version>1.1</version>
+        <interface>
+            <name>IMediaCasService</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.configstore</name>
+        <version>1.1</version>
+        <interface>
+            <name>ISurfaceFlingerConfigs</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.confirmationui</name>
+        <version>1.0</version>
+        <interface>
+            <name>IConfirmationUI</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.contexthub</name>
+        <version>1.0</version>
+        <interface>
+            <name>IContexthub</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.drm</name>
+        <version>1.0-2</version>
+        <interface>
+            <name>ICryptoFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+        <interface>
+            <name>IDrmFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.dumpstate</name>
+        <version>1.0</version>
+        <interface>
+            <name>IDumpstateDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.gatekeeper</name>
+        <version>1.0</version>
+        <interface>
+            <name>IGatekeeper</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.gnss</name>
+        <version>2.0</version>
+        <interface>
+            <name>IGnss</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <!-- Either the AIDL or the HIDL allocator HAL must exist on the device.
+         If the HIDL composer HAL exists, it must be at least version 2.0.
+         See DeviceManifestTest.GrallocHal -->
+    <hal format="hidl" optional="true">
+        <name>android.hardware.graphics.allocator</name>
+        <version>2.0</version>
+        <version>3.0</version>
+        <interface>
+            <name>IAllocator</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.graphics.composer</name>
+        <version>2.1-3</version>
+        <interface>
+            <name>IComposer</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.graphics.mapper</name>
+        <version>2.1</version>
+        <version>3.0</version>
+        <interface>
+            <name>IMapper</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <!-- Either the AIDL or the HIDL health HAL must exist on the device.
+         If the HIDL health HAL exists, it must be at least version 2.0.
+         See DeviceManifestTest.HealthHal -->
+    <hal format="hidl" optional="true">
+        <name>android.hardware.health</name>
+        <version>2.0</version>
+        <interface>
+            <name>IHealth</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.health.storage</name>
+        <version>1.0</version>
+        <interface>
+            <name>IStorage</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.ir</name>
+        <version>1.0</version>
+        <interface>
+            <name>IConsumerIr</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.input.classifier</name>
+        <version>1.0</version>
+        <interface>
+            <name>IInputClassifier</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.keymaster</name>
+        <version>3.0</version>
+        <version>4.0</version>
+        <interface>
+            <name>IKeymasterDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.keymaster</name>
+        <version>4.0</version>
+        <interface>
+            <name>IKeymasterDevice</name>
+            <instance>strongbox</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.light</name>
+        <version>2.0</version>
+        <interface>
+            <name>ILight</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.media.c2</name>
+        <version>1.0</version>
+        <interface>
+            <name>IComponentStore</name>
+            <instance>software</instance>
+            <regex-instance>default[0-9]*</regex-instance>
+            <regex-instance>vendor[0-9]*_software</regex-instance>
+        </interface>
+        <interface>
+            <name>IConfigurable</name>
+            <instance>default</instance>
+            <instance>software</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.media.omx</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOmx</name>
+            <instance>default</instance>
+        </interface>
+        <interface>
+            <name>IOmxStore</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.memtrack</name>
+        <version>1.0</version>
+        <interface>
+            <name>IMemtrack</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.neuralnetworks</name>
+        <version>1.0-2</version>
+        <interface>
+            <name>IDevice</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.nfc</name>
+        <version>1.2</version>
+        <interface>
+            <name>INfc</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.oemlock</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOemLock</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.power</name>
+        <version>1.0-3</version>
+        <interface>
+            <name>IPower</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.power.stats</name>
+        <version>1.0</version>
+        <interface>
+            <name>IPowerStats</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.radio</name>
+        <version>1.4</version>
+        <interface>
+            <name>IRadio</name>
+            <instance>slot1</instance>
+            <instance>slot2</instance>
+            <instance>slot3</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.radio</name>
+        <version>1.2</version>
+        <interface>
+            <name>ISap</name>
+            <instance>slot1</instance>
+            <instance>slot2</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.radio.config</name>
+        <!--
+        Note: Devices launching with target-level 4, if implementing the
+        radio config HAL, must provide an implementation of 1.1 IRadioConfig
+        that can handle version 1.2 of IRadioConfigResponse and
+        IRadioConfigIndication.
+        -->
+        <version>1.1</version>
+        <interface>
+            <name>IRadioConfig</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.renderscript</name>
+        <version>1.0</version>
+        <interface>
+            <name>IDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.secure_element</name>
+        <version>1.0</version>
+        <interface>
+            <name>ISecureElement</name>
+            <regex-instance>eSE[1-9][0-9]*</regex-instance>
+            <regex-instance>SIM[1-9][0-9]*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.sensors</name>
+        <version>1.0</version>
+        <version>2.0</version>
+        <interface>
+            <name>ISensors</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.soundtrigger</name>
+        <version>2.0-2</version>
+        <interface>
+            <name>ISoundTriggerHw</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tetheroffload.config</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOffloadConfig</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tetheroffload.control</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOffloadControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.thermal</name>
+        <version>2.0</version>
+        <interface>
+            <name>IThermal</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tv.cec</name>
+        <version>1.0</version>
+        <interface>
+            <name>IHdmiCec</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tv.input</name>
+        <version>1.0</version>
+        <interface>
+            <name>ITvInput</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.usb</name>
+        <version>1.0-2</version>
+        <interface>
+            <name>IUsb</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.usb.gadget</name>
+        <version>1.0</version>
+        <interface>
+            <name>IUsbGadget</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.vibrator</name>
+        <version>1.0-3</version>
+        <interface>
+            <name>IVibrator</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.vr</name>
+        <version>1.0</version>
+        <interface>
+            <name>IVr</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.weaver</name>
+        <version>1.0</version>
+        <interface>
+            <name>IWeaver</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi</name>
+        <version>1.0-3</version>
+        <interface>
+            <name>IWifi</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi.hostapd</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>IHostapd</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi.supplicant</name>
+        <version>1.0-2</version>
+        <interface>
+            <name>ISupplicant</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</compatibility-matrix>
diff --git a/compatibility_matrices/exclude/fcm_exclude.cpp b/compatibility_matrices/exclude/fcm_exclude.cpp
index 5a51798..2cb4ffa 100644
--- a/compatibility_matrices/exclude/fcm_exclude.cpp
+++ b/compatibility_matrices/exclude/fcm_exclude.cpp
@@ -84,26 +84,6 @@
             "android.hardware.thermal@1.0",
             "android.hardware.thermal@1.1",
             "android.hardware.wifi.offload@1.0",
-
-            // TODO(b/279809679): File bugs for the HALs deprecated in Q
-            "android.hardware.audio.effect@5.0",
-            "android.hardware.audio@5.0",
-            "android.hardware.boot@1.0",
-            "android.hardware.configstore@1.1",
-            "android.hardware.drm@1.0",
-            "android.hardware.drm@1.1",
-            "android.hardware.drm@1.2",
-            "android.hardware.dumpstate@1.0",
-            "android.hardware.health@2.0",
-            "android.hardware.light@2.0",
-            "android.hardware.power@1.0",
-            "android.hardware.power@1.1",
-            "android.hardware.power@1.2",
-            "android.hardware.power@1.3",
-            "android.hardware.vibrator@1.0",
-            "android.hardware.vibrator@1.1",
-            "android.hardware.vibrator@1.2",
-            "android.hardware.vibrator@1.3",
     };
 
     auto package_has_prefix = [&](const std::string& prefix) {