diff --git a/camera/device/3.2/types.hal b/camera/device/3.2/types.hal
index ed6ef7d..a7ab4ab 100644
--- a/camera/device/3.2/types.hal
+++ b/camera/device/3.2/types.hal
@@ -408,7 +408,16 @@
     int32_t streamId;
 
     /**
-     * The graphics buffer handle to the buffer
+     * The graphics buffer handle to the buffer.
+     *
+     * For StreamBuffers sent to the HAL in a CaptureRequest, this must be a
+     * valid handle to a graphics buffer, with dimensions and format matching
+     * that of the stream.
+     *
+     * For StreamBuffers returned in a CaptureResult, this must be null, since
+     * the handle to the buffer is already known to the client (since the client
+     * sent it in the matching CaptureRequest), and the handle can be identified
+     * by the combination of frame number and stream ID.
      */
     handle buffer;
 
@@ -424,44 +433,34 @@
      * The acquire sync fence for this buffer. The HAL must wait on this fence
      * fd before attempting to read from or write to this buffer.
      *
-     * The framework may be set to -1 to indicate that no waiting is necessary
-     * for this buffer.
+     * In a buffer included in a CaptureRequest, the client may set this to null
+     * to indicate that no waiting is necessary for this buffer.
      *
-     * When the HAL returns an output buffer to the framework with
-     * processCaptureResult(), the acquireFence must be set to -1. If the HAL
-     * never waits on the acquireFence due to an error in filling a buffer,
-     * when calling processCaptureResult() the HAL must set the releaseFence
-     * of the buffer to be the acquireFence passed to it by the framework. This
-     * allows the framework to wait on the fence before reusing the buffer.
-     *
-     * For input buffers, the HAL must not change the acquireFence field during
-     * the processCaptureRequest() call.
-     *
-     * When the HAL returns an input buffer to the framework with
-     * processCaptureResult(), the acquireFence must be set to -1. If the HAL
-     * never waits on input buffer acquire fence due to an error, the sync
-     * fences must be handled similarly to the way they are handled for output
-     * buffers.
+     * When the HAL returns an input or output buffer to the framework with
+     * processCaptureResult(), the acquireFence must be set to null. If the HAL
+     * never waits on the acquireFence due to an error in filling or reading a
+     * buffer, when calling processCaptureResult() the HAL must set the
+     * releaseFence of the buffer to be the acquireFence passed to it by the
+     * client. This allows the client to wait on the fence before reusing the
+     * buffer.
      */
     handle acquireFence;
 
     /**
-     * The release sync fence for this buffer. The HAL must set this fence when
-     * returning buffers to the framework, or write -1 to indicate that no
-     * waiting is required for this buffer.
+     * The release sync fence for this buffer. The HAL must set this to a valid
+     * fence fd when returning the input buffer or output buffers to the client
+     * in a CaptureResult, or set it to null to indicate that no waiting is
+     * required for this buffer.
      *
-     * For the output buffers, the fences must be set in the outputBuffers
-     * array passed to processCaptureResult().
-     *
-     * For the input buffer, the fences must be set in the inputBuffer
-     * passed to processCaptureResult().
+     * The client must set this to be null for all buffers included in a
+     * processCaptureRequest call.
      *
      * After signaling the releaseFence for this buffer, the HAL
      * must not make any further attempts to access this buffer as the
-     * ownership has been fully transferred back to the framework.
+     * ownership has been fully transferred back to the client.
      *
-     * If a fence of -1 was specified then the ownership of this buffer
-     * is transferred back immediately upon the call of processCaptureResult.
+     * If this is null, then the ownership of this buffer is transferred back
+     * immediately upon the call of processCaptureResult.
      */
     handle releaseFence;
 
@@ -722,13 +721,13 @@
     /**
      * The input stream buffer to use for this request, if any.
      *
+     * An invalid inputBuffer is signified by a null inputBuffer::buffer, in
+     * which case the value of all other members of inputBuffer must be ignored.
+     *
      * If inputBuffer is invalid, then the request is for a new capture from the
      * imager. If inputBuffer is valid, the request is for reprocessing the
-     * image contained in inputBuffer.
-     *
-     * In the latter case, the HAL must set the releaseFence of the
-     * inputBuffer to a valid sync fence, or to -1 if the HAL does not support
-     * sync, before processCaptureRequest() returns.
+     * image contained in inputBuffer, and the HAL must release the inputBuffer
+     * back to the client in a subsequent processCaptureResult call.
      *
      * The HAL is required to wait on the acquire sync fence of the input buffer
      * before accessing it.
@@ -741,9 +740,8 @@
      * data from this capture/reprocess. The HAL must wait on the acquire fences
      * of each stream buffer before writing to them.
      *
-     * The HAL takes ownership of the actual buffer_handle_t entries in
-     * outputBuffers; the framework must not access them until they are
-     * returned in a CaptureResult.
+     * The HAL takes ownership of the handles in outputBuffers; the client
+     * must not access them until they are returned in a CaptureResult.
      *
      * Any or all of the buffers included here may be brand new in this
      * request (having never before seen by the HAL).
@@ -823,10 +821,15 @@
     CameraMetadata result;
 
     /**
-     * The handles for the output stream buffers for this capture. They may not
-     * yet be filled at the time the HAL calls processCaptureResult(); the
-     * framework must wait on the release sync fences provided by the HAL before
-     * reading the buffers.
+     * The completed output stream buffers for this capture.
+     *
+     * They may not yet be filled at the time the HAL calls
+     * processCaptureResult(); the framework must wait on the release sync
+     * fences provided by the HAL before reading the buffers.
+     *
+     * The StreamBuffer::buffer handle must be null for all returned buffers;
+     * the client must cache the handle and look it up via the combination of
+     * frame number and stream ID.
      *
      * The number of output buffers returned must be less than or equal to the
      * matching capture request's count. If this is less than the buffer count
@@ -836,7 +839,7 @@
      * valid result metadata or an input buffer is returned in this result.
      *
      * The HAL must set the stream buffer's release sync fence to a valid sync
-     * fd, or to -1 if the buffer has already been filled.
+     * fd, or to null if the buffer has already been filled.
      *
      * If the HAL encounters an error while processing the buffer, and the
      * buffer is not filled, the buffer's status field must be set to ERROR. If
@@ -844,7 +847,7 @@
      * the acquire fence must be copied into the release fence, to allow the
      * framework to wait on the fence before reusing the buffer.
      *
-     * The acquire fence must be set to -1 for all output buffers.
+     * The acquire fence must be set to null for all output buffers.
      *
      * This vector may be empty; if so, at least one other processCaptureResult
      * call must be made (or have been made) by the HAL to provide the filled
@@ -854,8 +857,8 @@
      * all previous frames' buffers for that corresponding stream must have been
      * already delivered (the fences need not have yet been signaled).
      *
-     * Gralloc buffers for a frame may be sent to framework before the
-     * corresponding SHUTTER-notify.
+     * Buffers for a frame may be sent to framework before the corresponding
+     * SHUTTER-notify call is made by the HAL.
      *
      * Performance considerations:
      *
@@ -867,10 +870,11 @@
     vec<StreamBuffer> outputBuffers;
 
     /**
-     * The handle for the input stream buffer for this capture. It may not
-     * yet be consumed at the time the HAL calls processCaptureResult(); the
-     * framework must wait on the release sync fence provided by the HAL before
-     * reusing the buffer.
+     * The handle for the input stream buffer for this capture, if any.
+     *
+     * It may not yet be consumed at the time the HAL calls
+     * processCaptureResult(); the framework must wait on the release sync fence
+     * provided by the HAL before reusing the buffer.
      *
      * The HAL must handle the sync fences the same way they are done for
      * outputBuffers.
diff --git a/gnss/1.0/default/Android.mk b/gnss/1.0/default/Android.mk
index 06ef331..6289491 100644
--- a/gnss/1.0/default/Android.mk
+++ b/gnss/1.0/default/Android.mk
@@ -27,3 +27,27 @@
     libhardware
 
 include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_MODULE := android.hardware.gnss@1.0-service
+LOCAL_INIT_RC := android.hardware.gnss@1.0-service.rc
+LOCAL_SRC_FILES := \
+    service.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libcutils \
+    libdl \
+    libbase \
+    libutils \
+    libhardware_legacy \
+    libhardware \
+
+LOCAL_SHARED_LIBRARIES += \
+    libhwbinder \
+    libhidlbase \
+    libhidltransport \
+    android.hardware.gnss@1.0 \
+
+include $(BUILD_EXECUTABLE)
diff --git a/gnss/1.0/default/android.hardware.gnss@1.0-service.rc b/gnss/1.0/default/android.hardware.gnss@1.0-service.rc
new file mode 100644
index 0000000..eeb2e43
--- /dev/null
+++ b/gnss/1.0/default/android.hardware.gnss@1.0-service.rc
@@ -0,0 +1,4 @@
+service gnss_service /system/bin/hw/android.hardware.gnss@1.0-service
+    class main
+    user system
+    group system
diff --git a/gnss/1.0/default/service.cpp b/gnss/1.0/default/service.cpp
new file mode 100644
index 0000000..4e040c5
--- /dev/null
+++ b/gnss/1.0/default/service.cpp
@@ -0,0 +1,12 @@
+#define LOG_TAG "android.hardware.gnss@1.0-service"
+
+#include <android/hardware/gnss/1.0/IGnss.h>
+
+#include <hidl/LegacySupport.h>
+
+using android::hardware::gnss::V1_0::IGnss;
+using android::hardware::defaultPassthroughServiceImplementation;
+
+int main() {
+    return defaultPassthroughServiceImplementation<IGnss>("gnss");
+}
diff --git a/radio/1.0/types.hal b/radio/1.0/types.hal
index 8c7f538..6475b4f 100644
--- a/radio/1.0/types.hal
+++ b/radio/1.0/types.hal
@@ -51,7 +51,6 @@
 };
 
 enum RadioError : int32_t {
-    INVALID_RESPONSE = -1,                // Response from vendor had invalid data
     NONE = 0,                             // Success
     RADIO_NOT_AVAILABLE = 1,              // If radio did not start or is resetting
     GENERIC_FAILURE = 2,
@@ -115,7 +114,8 @@
     NO_NETWORK_FOUND = 63,                // Network cannot be found
     DEVICE_IN_USE = 64,                   // Operation cannot be performed because the device
                                           // is currently in use
-    RIL_E_ABORTED = 65,                   // Operation aborted
+    ABORTED = 65,                         // Operation aborted
+    INVALID_RESPONSE = 66,                // Response from vendor had invalid data
 
     // TODO(May be moved to vendor HAL extension)
     // OEM specific error codes. To be used by OEM when they don't want to reveal
diff --git a/vehicle/2.0/Android.mk b/vehicle/2.0/Android.mk
index 71b587b..9544960 100644
--- a/vehicle/2.0/Android.mk
+++ b/vehicle/2.0/Android.mk
@@ -17,6 +17,177 @@
 
 
 #
+# Build types.hal (CommonIgnitionMonitors)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/CommonIgnitionMonitors.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.CommonIgnitionMonitors
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (CompressionIgnitionMonitors)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/CompressionIgnitionMonitors.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.CompressionIgnitionMonitors
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (FuelSystemStatus)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/FuelSystemStatus.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.FuelSystemStatus
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (FuelType)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/FuelType.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.FuelType
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (IgnitionMonitorKind)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/IgnitionMonitorKind.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.IgnitionMonitorKind
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (Obd2FloatSensorIndex)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/Obd2FloatSensorIndex.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.Obd2FloatSensorIndex
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (Obd2IntegerSensorIndex)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/Obd2IntegerSensorIndex.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.Obd2IntegerSensorIndex
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (SecondaryAirStatus)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/SecondaryAirStatus.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.SecondaryAirStatus
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (SparkIgnitionMonitors)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/SparkIgnitionMonitors.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.SparkIgnitionMonitors
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (StatusCode)
 #
 GEN := $(intermediates)/android/hardware/vehicle/V2_0/StatusCode.java
@@ -970,6 +1141,177 @@
 
 
 #
+# Build types.hal (CommonIgnitionMonitors)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/CommonIgnitionMonitors.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.CommonIgnitionMonitors
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (CompressionIgnitionMonitors)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/CompressionIgnitionMonitors.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.CompressionIgnitionMonitors
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (FuelSystemStatus)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/FuelSystemStatus.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.FuelSystemStatus
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (FuelType)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/FuelType.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.FuelType
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (IgnitionMonitorKind)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/IgnitionMonitorKind.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.IgnitionMonitorKind
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (Obd2FloatSensorIndex)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/Obd2FloatSensorIndex.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.Obd2FloatSensorIndex
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (Obd2IntegerSensorIndex)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/Obd2IntegerSensorIndex.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.Obd2IntegerSensorIndex
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (SecondaryAirStatus)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/SecondaryAirStatus.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.SecondaryAirStatus
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (SparkIgnitionMonitors)
+#
+GEN := $(intermediates)/android/hardware/vehicle/V2_0/SparkIgnitionMonitors.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.vehicle@2.0::types.SparkIgnitionMonitors
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
 # Build types.hal (StatusCode)
 #
 GEN := $(intermediates)/android/hardware/vehicle/V2_0/StatusCode.java
diff --git a/vehicle/2.0/types.hal b/vehicle/2.0/types.hal
index 28ccb78..d98a982 100644
--- a/vehicle/2.0/types.hal
+++ b/vehicle/2.0/types.hal
@@ -2531,3 +2531,383 @@
   /* Something unexpected has happened in Vehicle HAL */
   INTERNAL_ERROR = 5,
 };
+
+/* The status of a fuel system as described by the OBD2 specification. */
+enum FuelSystemStatus : int32_t {
+  OPEN_INSUFFICIENT_ENGINE_TEMPERATURE = 1,
+
+  CLOSED_LOOP = 2,
+
+  OPEN_ENGINE_LOAD_OR_DECELERATION = 4,
+
+  OPEN_SYSTEM_FAILURE = 8,
+
+  CLOSED_LOOP_BUT_FEEDBACK_FAULT = 16,
+};
+
+/* Defines which ignition monitors are available to be read. */
+enum IgnitionMonitorKind : int32_t {
+  SPARK = 0,
+
+  COMPRESSION = 1,
+};
+
+/* These ignition monitors are common to both SPARK and COMPRESSION. */
+enum CommonIgnitionMonitors : int32_t {
+  COMPONENTS_AVAILABLE = 0x1 << 0,
+  COMPONENTS_INCOMPLETE = 0x1 << 1,
+
+  FUEL_SYSTEM_AVAILABLE = 0x1 << 2,
+  FUEL_SYSTEM_INCOMPLETE = 0x1 << 3,
+
+  MISFIRE_AVAILABLE = 0x1 << 4,
+  MISFIRE_INCOMPLETE = 0x1 << 5,
+};
+
+/* Ignition monitors available for SPARK vehicles. */
+enum SparkIgnitionMonitors : CommonIgnitionMonitors {
+  EGR_AVAILABLE = 0x1 << 6,
+  EGR_INCOMPLETE = 0x1 << 7,
+
+  OXYGEN_SENSOR_HEATER_AVAILABLE = 0x1 << 8,
+  OXYGEN_SENSOR_HEATER_INCOMPLETE = 0x1 << 9,
+
+  OXYGEN_SENSOR_AVAILABLE = 0x1 << 10,
+  OXYGEN_SENSOR_INCOMPLETE = 0x1 << 11,
+
+  AC_REFRIGERANT_AVAILABLE = 0x1 << 12,
+  AC_REFRIGERANT_INCOMPLETE = 0x1 << 13,
+
+  SECONDARY_AIR_SYSTEM_AVAILABLE = 0x1 << 14,
+  SECONDARY_AIR_SYSTEM_INCOMPLETE = 0x1 << 15,
+
+  EVAPORATIVE_SYSTEM_AVAILABLE = 0x1 << 16,
+  EVAPORATIVE_SYSTEM_INCOMPLETE = 0x1 << 17,
+
+  HEATED_CATALYST_AVAILABLE = 0x1 << 18,
+  HEATED_CATALYST_INCOMPLETE = 0x1 << 19,
+
+  CATALYST_AVAILABLE = 0x1 << 20,
+  CATALYST_INCOMPLETE = 0x1 << 21,
+};
+
+/* Ignition monitors only available for COMPRESSION vehicles. */
+enum CompressionIgnitionMonitors : CommonIgnitionMonitors {
+  EGR_OR_VVT_AVAILABLE = 0x1 << 6,
+  EGR_OR_VVT_INCOMPLETE = 0x1 << 7,
+
+  PM_FILTER_AVAILABLE = 0x1 << 8,
+  PM_FILTER_INCOMPLETE = 0x1 << 9,
+
+  EXHAUST_GAS_SENSOR_AVAILABLE = 0x1 << 10,
+  EXHAUST_GAS_SENSOR_INCOMPLETE = 0x1 << 11,
+
+  BOOST_PRESSURE_AVAILABLE = 0x1 << 12,
+  BOOST_PRESSURE_INCOMPLETE = 0x1 << 13,
+
+  NOx_SCR__AVAILABLE = 0x1 << 14,
+  NOx_SCR_INCOMPLETE = 0x1 << 15,
+
+  NMHC_CATALYST_AVAILABLE = 0x1 << 16,
+  NMHC_CATALYST_INCOMPLETE = 0x1 << 17,
+};
+
+enum SecondaryAirStatus : int32_t {
+  UPSTREAM = 1,
+
+  DOWNSTREAM_OF_CATALYCIC_CONVERTER = 2,
+
+  FROM_OUTSIDE_OR_OFF = 4,
+
+  PUMP_ON_FOR_DIAGNOSTICS = 8,
+};
+
+enum FuelType : int32_t {
+  NOT_AVAILABLE = 0,
+
+  GASOLINE = 1,
+
+  METHANOL = 2,
+
+  ETHANOL = 3,
+
+  DIESEL = 4,
+
+  LPG = 5,
+
+  CNG = 6,
+
+  PROPANE = 7,
+
+  ELECTRIC = 8,
+
+  BIFUEL_RUNNING_GASOLINE = 9,
+
+  BIFUEL_RUNNING_METHANOL = 10,
+
+  BIFUEL_RUNNING_ETHANOL = 11,
+
+  BIFUEL_RUNNING_LPG = 12,
+
+  BIFUEL_RUNNING_CNG = 13,
+
+  BIFUEL_RUNNING_PROPANE = 14,
+
+  BIFUEL_RUNNING_ELECTRIC = 15,
+
+  BIFUEL_RUNNING_ELECTRIC_AND_COMBUSTION = 16,
+
+  HYBRID_GASOLINE = 17,
+
+  HYBRID_ETHANOL = 18,
+
+  HYBRID_DIESEL = 19,
+
+  HYBRID_ELECTRIC = 20,
+
+  HYBRID_RUNNING_ELECTRIC_AND_COMBUSTION = 21,
+
+  HYBRID_REGENERATIVE = 22,
+
+  BIFUEL_RUNNING_DIESEL = 23,
+};
+
+/*
+ * This enum provides the canonical mapping for sensor properties that have an integer value.
+ * The ordering of the values is taken from the OBD2 specification.
+ * Some of the properties are represented as an integer mapping to another enum. In those cases
+ * expect a comment by the property definition describing the enum to look at for the mapping.
+ * Any value greater than the last reserved index is available to vendors to map their extensions.
+ */
+enum Obd2IntegerSensorIndex : int32_t {
+  /* refer to FuelSystemStatus for a description of this value. */
+  FUEL_SYSTEM_STATUS = 0,
+
+  MALFUNCTION_INDICATOR_LIGHT_ON = 1,
+
+  /* refer to IgnitionMonitorKind for a description of this value. */
+  IGNITION_MONITORS_SUPPORTED = 2,
+
+  /*
+   * The value of this sensor is a bitmask that specifies whether ignition-specific
+   * tests are available and whether they are complete. The semantics of the individual
+   * bits in this value are given by, respectively, SparkIgnitionMonitors and
+   * CompressionIgnitionMonitors depending on the value of IGNITION_MONITORS_SUPPORTED.
+  /*
+  IGNITION_SPECIFIC_MONITORS = 3,
+
+  INTAKE_AIR_TEMPERATURE = 4,
+
+  /* refer to SecondaryAirStatus for a description of this value. */
+  COMMANDED_SECONDARY_AIR_STATUS = 5,
+
+  NUM_OXYGEN_SENSORS_PRESENT = 6,
+
+  RUNTIME_SINCE_ENGINE_START = 7,
+
+  DISTANCE_TRAVELED_WITH_MALFUNCTION_INDICATOR_LIGHT_ON = 8,
+
+  WARMUPS_SINCE_CODES_CLEARED = 9,
+
+  DISTANCE_TRAVELED_SINCE_CODES_CLEARED = 10,
+
+  ABSOLUTE_BAROMETRIC_PRESSURE = 11,
+
+  CONTROL_MODULE_VOLTAGE = 12,
+
+  AMBIENT_AIR_TEMPERATURE = 13,
+
+  TIME_WITH_MALFUNCTION_LIGHT_ON = 14,
+
+  TIME_SINCE_TROUBLE_CODES_CLEARED = 15,
+
+  MAX_FUEL_AIR_EQUIVALENCE_RATIO = 16,
+
+  MAX_OXYGEN_SENSOR_VOLTAGE = 17,
+
+  MAX_OXYGEN_SENSOR_CURRENT = 18,
+
+  MAX_INTAKE_MANIFOLD_ABSOLUTE_PRESSURE = 19,
+
+  MAX_AIR_FLOW_RATE_FROM_MASS_AIR_FLOW_SENSOR = 20,
+
+  /* refer to FuelType for a description of this value. */
+  FUEL_TYPE = 21,
+
+  FUEL_RAIL_ABSOLUTE_PRESSURE = 22,
+
+  ENGINE_OIL_TEMPERATURE = 23,
+
+  DRIVER_DEMAND_PERCENT_TORQUE = 24,
+
+  ENGINE_ACTUAL_PERCENT_TORQUE = 25,
+
+  ENGINE_REFERENCE_PERCENT_TORQUE = 26,
+
+  ENGINE_PERCENT_TORQUE_DATA_IDLE = 27,
+
+  ENGINE_PERCENT_TORQUE_DATA_POINT1 = 28,
+
+  ENGINE_PERCENT_TORQUE_DATA_POINT2 = 29,
+
+  ENGINE_PERCENT_TORQUE_DATA_POINT3 = 30,
+
+  ENGINE_PERCENT_TORQUE_DATA_POINT4 = 31,
+
+  LAST_SYSTEM_INDEX = ENGINE_PERCENT_TORQUE_DATA_POINT4,
+
+  VENDOR_START_INDEX = LAST_SYSTEM_INDEX + 1,
+};
+
+/*
+ * This enum provides the canonical mapping for sensor properties that have a floating-point value.
+ * The ordering of the values is taken from the OBD2 specification.
+ * Any value greater than the last reserved index is available to vendors to map their extensions.
+ */
+enum Obd2FloatSensorIndex : int32_t {
+  CALCULATED_ENGINE_LOAD = 0,
+
+  ENGINE_COOLANT_TEMPERATURE = 1,
+
+  SHORT_TERM_FUEL_TRIM_BANK1 = 2,
+
+  LONG_TERM_FUEL_TRIM_BANK1 = 3,
+
+  SHORT_TERM_FUEL_TRIM_BANK2 = 4,
+
+  LONG_TERM_FUEL_TRIM_BANK2 = 5,
+
+  FUEL_PRESSURE = 6,
+
+  INTAKE_MANIFOLD_ABSOLUTE_PRESSURE = 7,
+
+  ENGINE_RPM = 8,
+
+  VEHICLE_SPEED = 9,
+
+  TIMING_ADVANCE = 10,
+
+  MAF_AIR_FLOW_RATE = 11,
+
+  THROTTLE_POSITION = 12,
+
+  OXYGEN_SENSOR1_VOLTAGE = 13,
+
+  OXYGEN_SENSOR1_SHORT_TERM_FUEL_TRIM = 14,
+
+  OXYGEN_SENSOR1_FUEL_AIR_EQUIVALENCE_RATIO = 15,
+
+  OXYGEN_SENSOR2_VOLTAGE = 16,
+
+  OXYGEN_SENSOR2_SHORT_TERM_FUEL_TRIM = 17,
+
+  OXYGEN_SENSOR2_FUEL_AIR_EQUIVALENCE_RATIO = 18,
+
+  OXYGEN_SENSOR3_VOLTAGE = 19,
+
+  OXYGEN_SENSOR3_SHORT_TERM_FUEL_TRIM = 20,
+
+  OXYGEN_SENSOR3_FUEL_AIR_EQUIVALENCE_RATIO = 21,
+
+  OXYGEN_SENSOR4_VOLTAGE = 22,
+
+  OXYGEN_SENSOR4_SHORT_TERM_FUEL_TRIM = 23,
+
+  OXYGEN_SENSOR4_FUEL_AIR_EQUIVALENCE_RATIO = 24,
+
+  OXYGEN_SENSOR5_VOLTAGE = 25,
+
+  OXYGEN_SENSOR5_SHORT_TERM_FUEL_TRIM = 26,
+
+  OXYGEN_SENSOR5_FUEL_AIR_EQUIVALENCE_RATIO = 27,
+
+  OXYGEN_SENSOR6_VOLTAGE = 28,
+
+  OXYGEN_SENSOR6_SHORT_TERM_FUEL_TRIM = 29,
+
+  OXYGEN_SENSOR6_FUEL_AIR_EQUIVALENCE_RATIO = 30,
+
+  OXYGEN_SENSOR7_VOLTAGE = 31,
+
+  OXYGEN_SENSOR7_SHORT_TERM_FUEL_TRIM = 32,
+
+  OXYGEN_SENSOR7_FUEL_AIR_EQUIVALENCE_RATIO = 33,
+
+  OXYGEN_SENSOR8_VOLTAGE = 34,
+
+  OXYGEN_SENSOR8_SHORT_TERM_FUEL_TRIM = 35,
+
+  OXYGEN_SENSOR8_FUEL_AIR_EQUIVALENCE_RATIO = 36,
+
+  FUEL_RAIL_PRESSURE = 37,
+
+  FUEL_RAIL_GAUGE_PRESSURE = 38,
+
+  COMMANDED_EXHAUST_GAS_RECIRCULATION = 39,
+
+  EXHAUST_GAS_RECIRCULATION_ERROR = 40,
+
+  COMMANDED_EVAPORATIVE_PURGE = 41,
+
+  FUEL_TANK_LEVEL_INPUT = 42,
+
+  EVAPORATION_SYSTEM_VAPOR_PRESSURE = 43,
+
+  CATALYST_TEMPERATURE_BANK1_SENSOR1 = 44,
+
+  CATALYST_TEMPERATURE_BANK2_SENSOR1 = 45,
+
+  CATALYST_TEMPERATURE_BANK1_SENSOR2 = 46,
+
+  CATALYST_TEMPERATURE_BANK2_SENSOR2 = 47,
+
+  ABSOLUTE_LOAD_VALUE = 48,
+
+  FUEL_AIR_COMMANDED_EQUIVALENCE_RATIO = 49,
+
+  RELATIVE_THROTTLE_POSITION = 50,
+
+  ABSOLUTE_THROTTLE_POSITION_B = 51,
+
+  ABSOLUTE_THROTTLE_POSITION_C = 52,
+
+  ACCELERATOR_PEDAL_POSITION_D = 53,
+
+  ACCELERATOR_PEDAL_POSITION_E = 54,
+
+  ACCELERATOR_PEDAL_POSITION_F = 55,
+
+  COMMANDED_THROTTLE_ACTUATOR = 56,
+
+  ETHANOL_FUEL_PERCENTAGE = 57,
+
+  ABSOLUTE_EVAPORATION_SYSTEM_VAPOR_PRESSURE = 58,
+
+  SHORT_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK1 = 59,
+
+  SHORT_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK2 = 60,
+
+  SHORT_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK3 = 61,
+
+  SHORT_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK4 = 62,
+
+  LONG_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK1 = 63,
+
+  LONG_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK2 = 64,
+
+  LONG_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK3 = 65,
+
+  LONG_TERM_SECONDARY_OXYGEN_SENSOR_TRIM_BANK4 = 66,
+
+  RELATIVE_ACCELERATOR_PEDAL_POSITION = 67,
+
+  HYBRID_BATTERY_PACK_REMAINING_LIFE = 68,
+
+  FUEL_INJECTION_TIMING = 69,
+
+  ENGINE_FUEL_RATE = 70,
+
+  LAST_SYSTEM_INDEX = ENGINE_FUEL_RATE,
+
+  VENDOR_START_INDEX = LAST_SYSTEM_INDEX + 1,
+};