diff --git a/gnss/1.0/default/AGnss.cpp b/gnss/1.0/default/AGnss.cpp
new file mode 100644
index 0000000..52fdc26
--- /dev/null
+++ b/gnss/1.0/default/AGnss.cpp
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_AGnssInterface"
+
+#include "AGnss.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> AGnss::sThreadFuncArgsList;
+sp<IAGnssCallback> AGnss::sAGnssCbIface = nullptr;
+bool AGnss::sInterfaceExists = false;
+
+AGpsCallbacks AGnss::sAGnssCb = {
+    .status_cb = statusCb,
+    .create_thread_cb = createThreadCb
+};
+
+AGnss::AGnss(const AGpsInterface* aGpsIface) : mAGnssIface(aGpsIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+AGnss::~AGnss() {
+    sThreadFuncArgsList.clear();
+}
+
+void AGnss::statusCb(AGpsStatus* status) {
+    if (sAGnssCbIface == nullptr) {
+        ALOGE("%s: AGNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (status == nullptr) {
+        ALOGE("AGNSS status is invalid");
+        return;
+    }
+
+    /*
+     * Logic based on AGnssStatus processing by GnssLocationProvider. Size of
+     * AGpsStatus is checked for backward compatibility since some devices may
+     * be sending out an older version of AGpsStatus that only supports IPv4.
+     */
+    size_t statusSize = status->size;
+    if (status->size == sizeof(AGpsStatus)) {
+        switch (status->addr.ss_family)
+        {
+            case AF_INET:
+                {
+                    /*
+                     * ss_family indicates IPv4.
+                     */
+                    struct sockaddr_in* in = reinterpret_cast<struct sockaddr_in*>(&(status->addr));
+                    IAGnssCallback::AGnssStatusIpV4 aGnssStatusIpV4 = {
+                        .type = static_cast<IAGnssCallback::AGnssType>(status->type),
+                        .status = static_cast<IAGnssCallback::AGnssStatusValue>(status->status),
+                        .ipV4Addr = in->sin_addr.s_addr,
+                    };
+
+                    /*
+                     * Callback to client with agnssStatusIpV4Cb.
+                     */
+                    sAGnssCbIface->agnssStatusIpV4Cb(aGnssStatusIpV4);
+                    break;
+                }
+            case AF_INET6:
+                {
+                    /*
+                     * ss_family indicates IPv6. Callback to client with agnssStatusIpV6Cb.
+                     */
+                    IAGnssCallback::AGnssStatusIpV6 aGnssStatusIpV6;
+
+                    aGnssStatusIpV6.type = static_cast<IAGnssCallback::AGnssType>(status->type);
+                    aGnssStatusIpV6.status = static_cast<IAGnssCallback::AGnssStatusValue>(
+                            status->status);
+
+                    struct sockaddr_in6* in6 = reinterpret_cast<struct sockaddr_in6 *>(
+                            &(status->addr));
+                    memcpy(&(aGnssStatusIpV6.ipV6Addr[0]), in6->sin6_addr.s6_addr,
+                           aGnssStatusIpV6.ipV6Addr.size());
+                    sAGnssCbIface->agnssStatusIpV6Cb(aGnssStatusIpV6);
+                    break;
+                }
+             default:
+                    ALOGE("Invalid ss_family found: %d", status->addr.ss_family);
+        }
+    } else if (statusSize >= sizeof(AGpsStatus_v2)) {
+        AGpsStatus_v2* statusV2 = reinterpret_cast<AGpsStatus_v2*>(status);
+        uint32_t ipV4Addr = statusV2->ipaddr;
+        IAGnssCallback::AGnssStatusIpV4 aGnssStatusIpV4 = {
+            .type = static_cast<IAGnssCallback::AGnssType>(AF_INET),
+            .status = static_cast<IAGnssCallback::AGnssStatusValue>(status->status),
+            /*
+             * For older versions of AGpsStatus, change IP addr to net order. This
+             * was earlier being done in GnssLocationProvider.
+             */
+            .ipV4Addr = htonl(ipV4Addr)
+        };
+        /*
+         * Callback to client with agnssStatusIpV4Cb.
+         */
+        sAGnssCbIface->agnssStatusIpV4Cb(aGnssStatusIpV4);
+    } else {
+        ALOGE("%s: Invalid size for AGPS Status", __func__);
+    }
+}
+
+pthread_t AGnss::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+/*
+ * Implementation of methods from ::android::hardware::gnss::V1_0::IAGnss follow.
+ */
+Return<void> AGnss::setCallback(const sp<IAGnssCallback>& callback) {
+    if (mAGnssIface == nullptr) {
+        ALOGE("%s: AGnss interface is unavailable", __func__);
+        return Void();
+    }
+
+    sAGnssCbIface = callback;
+
+    mAGnssIface->init(&sAGnssCb);
+    return Void();
+}
+
+Return<bool> AGnss::dataConnClosed()  {
+    if (mAGnssIface == nullptr) {
+        ALOGE("%s: AGnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mAGnssIface->data_conn_closed() == 0);
+}
+
+Return<bool> AGnss::dataConnFailed()  {
+    if (mAGnssIface == nullptr) {
+        ALOGE("%s: AGnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mAGnssIface->data_conn_failed() == 0);
+}
+
+Return<bool> AGnss::setServer(IAGnssCallback::AGnssType type,
+                              const hidl_string& hostname,
+                              int32_t port) {
+    if (mAGnssIface == nullptr) {
+        ALOGE("%s: AGnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mAGnssIface->set_server(static_cast<AGpsType>(type), hostname.c_str(), port) == 0);
+}
+
+Return<bool> AGnss::dataConnOpen(const hidl_string& apn, IAGnss::ApnIpType apnIpType) {
+    if (mAGnssIface == nullptr) {
+        ALOGE("%s: AGnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mAGnssIface->data_conn_open_with_apn_ip_type(apn.c_str(),
+                                                     static_cast<uint16_t>(apnIpType)) == 0);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/AGnss.h b/gnss/1.0/default/AGnss.h
new file mode 100644
index 0000000..2a8eed0
--- /dev/null
+++ b/gnss/1.0/default/AGnss.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_AGnss_H_
+#define android_hardware_gnss_V1_0_AGnss_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IAGnss.h>
+#include <hardware/gps_internal.h>
+#include <hidl/Status.h>
+#include <netinet/in.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IAGnss;
+using ::android::hardware::gnss::V1_0::IAGnssCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Extended interface for AGNSS support. Also contains wrapper methods to allow
+ * methods from IAGnssCallback interface to be passed into the conventional
+ * implementation of the GNSS HAL.
+ */
+struct AGnss : public IAGnss {
+    AGnss(const AGpsInterface* agpsIface);
+    ~AGnss();
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IAGnss interface follow.
+     * These declarations were generated from IAGnss.hal.
+     */
+    Return<void> setCallback(const sp<IAGnssCallback>& callback) override;
+    Return<bool> dataConnClosed() override;
+    Return<bool> dataConnFailed() override;
+    Return<bool> setServer(IAGnssCallback::AGnssType type,
+                         const hidl_string& hostname, int32_t port) override;
+    Return<bool> dataConnOpen(const hidl_string& apn,
+                                           IAGnss::ApnIpType apnIpType) override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default
+     * implementation. These methods are not part of the IAGnss base class.
+     */
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+    static void statusCb(AGpsStatus* status);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static AGpsCallbacks sAGnssCb;
+
+ private:
+    const AGpsInterface* mAGnssIface = nullptr;
+    static sp<IAGnssCallback> sAGnssCbIface;
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static bool sInterfaceExists;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_AGnss_H_
diff --git a/gnss/1.0/default/AGnssRil.cpp b/gnss/1.0/default/AGnssRil.cpp
new file mode 100644
index 0000000..87abad7
--- /dev/null
+++ b/gnss/1.0/default/AGnssRil.cpp
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_AGnssRilInterface"
+
+#include "AGnssRil.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> AGnssRil::sThreadFuncArgsList;
+sp<IAGnssRilCallback> AGnssRil::sAGnssRilCbIface = nullptr;
+bool AGnssRil::sInterfaceExists = false;
+
+AGpsRilCallbacks AGnssRil::sAGnssRilCb = {
+    .request_setid = AGnssRil::requestSetId,
+    .request_refloc = AGnssRil::requestRefLoc,
+    .create_thread_cb = AGnssRil::createThreadCb
+};
+
+AGnssRil::AGnssRil(const AGpsRilInterface* aGpsRilIface) : mAGnssRilIface(aGpsRilIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+AGnssRil::~AGnssRil() {
+    sThreadFuncArgsList.clear();
+}
+
+void AGnssRil::requestSetId(uint32_t flags) {
+    if (sAGnssRilCbIface == nullptr) {
+        ALOGE("%s: AGNSSRil Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sAGnssRilCbIface->requestSetIdCb(static_cast<IAGnssRilCallback::ID>(flags));
+}
+
+void AGnssRil::requestRefLoc(uint32_t /*flags*/) {
+    if (sAGnssRilCbIface == nullptr) {
+        ALOGE("%s: AGNSSRil Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sAGnssRilCbIface->requestRefLocCb();
+}
+
+pthread_t AGnssRil::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IAGnssRil follow.
+Return<void> AGnssRil::setCallback(const sp<IAGnssRilCallback>& callback)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return Void();
+    }
+
+    sAGnssRilCbIface = callback;
+
+    mAGnssRilIface->init(&sAGnssRilCb);
+    return Void();
+}
+
+Return<void> AGnssRil::setRefLocation(const IAGnssRil::AGnssRefLocation& aGnssRefLocation)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return Void();
+    }
+
+    AGpsRefLocation aGnssRefloc;
+    aGnssRefloc.type = static_cast<uint16_t>(aGnssRefLocation.type);
+
+    auto& cellID = aGnssRefLocation.cellID;
+    aGnssRefloc.u.cellID = {
+        .type = static_cast<uint16_t>(cellID.type),
+        .mcc = cellID.mcc,
+        .mnc = cellID.mnc,
+        .lac = cellID.lac,
+        .cid = cellID.cid,
+        .tac = cellID.tac,
+        .pcid = cellID.pcid
+    };
+
+    mAGnssRilIface->set_ref_location(&aGnssRefloc, sizeof(aGnssRefloc));
+    return Void();
+}
+
+Return<bool> AGnssRil::setSetId(IAGnssRil::SetIDType type, const hidl_string& setid)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return false;
+    }
+
+    mAGnssRilIface->set_set_id(static_cast<uint16_t>(type), setid.c_str());
+    return true;
+}
+
+Return<bool> AGnssRil::updateNetworkState(bool connected,
+                                          IAGnssRil::NetworkType type,
+                                          bool roaming) {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return false;
+    }
+
+    mAGnssRilIface->update_network_state(connected,
+                                         static_cast<int>(type),
+                                         roaming,
+                                         nullptr /* extra_info */);
+    return true;
+}
+
+Return<bool> AGnssRil::updateNetworkAvailability(bool available, const hidl_string& apn)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return false;
+    }
+
+    mAGnssRilIface->update_network_availability(available, apn.c_str());
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/AGnssRil.h b/gnss/1.0/default/AGnssRil.h
new file mode 100644
index 0000000..6215a9e
--- /dev/null
+++ b/gnss/1.0/default/AGnssRil.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_AGnssRil_H_
+#define android_hardware_gnss_V1_0_AGnssRil_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IAGnssRil.h>
+#include <hardware/gps.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IAGnssRil;
+using ::android::hardware::gnss::V1_0::IAGnssRilCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Extended interface for AGNSS RIL support. An Assisted GNSS Radio Interface Layer interface
+ * allows the GNSS chipset to request radio interface layer information from Android platform.
+ * Examples of such information are reference location, unique subscriber ID, phone number string
+ * and network availability changes. Also contains wrapper methods to allow methods from
+ * IAGnssiRilCallback interface to be passed into the conventional implementation of the GNSS HAL.
+ */
+struct AGnssRil : public IAGnssRil {
+    AGnssRil(const AGpsRilInterface* aGpsRilIface);
+    ~AGnssRil();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IAGnssRil follow.
+     * These declarations were generated from IAGnssRil.hal.
+     */
+    Return<void> setCallback(const sp<IAGnssRilCallback>& callback) override;
+    Return<void> setRefLocation(const IAGnssRil::AGnssRefLocation& agnssReflocation) override;
+    Return<bool> setSetId(IAGnssRil::SetIDType type, const hidl_string& setid) override;
+    Return<bool> updateNetworkState(bool connected,
+                                    IAGnssRil::NetworkType type,
+                                    bool roaming) override;
+    Return<bool> updateNetworkAvailability(bool available, const hidl_string& apn) override;
+    static void requestSetId(uint32_t flags);
+    static void requestRefLoc(uint32_t flags);
+
+    /*
+     * Callback method to be passed into the conventional GNSS HAL by the default
+     * implementation. This method is not part of the IAGnssRil base class.
+     */
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static AGpsRilCallbacks sAGnssRilCb;
+
+ private:
+    const AGpsRilInterface* mAGnssRilIface = nullptr;
+    static sp<IAGnssRilCallback> sAGnssRilCbIface;
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static bool sInterfaceExists;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_AGnssRil_H_
diff --git a/gnss/1.0/default/Android.mk b/gnss/1.0/default/Android.mk
new file mode 100644
index 0000000..06ef331
--- /dev/null
+++ b/gnss/1.0/default/Android.mk
@@ -0,0 +1,29 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.gnss@1.0-impl
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := \
+    ThreadCreationWrapper.cpp \
+    AGnss.cpp \
+    AGnssRil.cpp \
+    Gnss.cpp \
+    GnssDebug.cpp \
+    GnssGeofencing.cpp \
+    GnssMeasurement.cpp \
+    GnssNavigationMessage.cpp \
+    GnssNi.cpp \
+    GnssXtra.cpp \
+    GnssConfiguration.cpp \
+    GnssUtils.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libhidlbase \
+    libhidltransport \
+    libhwbinder \
+    libutils \
+    android.hardware.gnss@1.0 \
+    libhardware
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/gnss/1.0/default/Gnss.cpp b/gnss/1.0/default/Gnss.cpp
new file mode 100644
index 0000000..37810be
--- /dev/null
+++ b/gnss/1.0/default/Gnss.cpp
@@ -0,0 +1,569 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssInterface"
+
+#include "Gnss.h"
+#include <GnssUtils.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> Gnss::sThreadFuncArgsList;
+sp<IGnssCallback> Gnss::sGnssCbIface = nullptr;
+bool Gnss::sInterfaceExists = false;
+
+GpsCallbacks Gnss::sGnssCb = {
+    .size = sizeof(GpsCallbacks),
+    .location_cb = locationCb,
+    .status_cb = statusCb,
+    .sv_status_cb = gpsSvStatusCb,
+    .nmea_cb = nmeaCb,
+    .set_capabilities_cb = setCapabilitiesCb,
+    .acquire_wakelock_cb = acquireWakelockCb,
+    .release_wakelock_cb = releaseWakelockCb,
+    .create_thread_cb = createThreadCb,
+    .request_utc_time_cb = requestUtcTimeCb,
+    .set_system_info_cb = setSystemInfoCb,
+    .gnss_sv_status_cb = gnssSvStatusCb,
+};
+
+Gnss::Gnss(gps_device_t* gnssDevice) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+
+    if (gnssDevice == nullptr) {
+        ALOGE("%s: Invalid device_t handle", __func__);
+        return;
+    }
+
+    mGnssIface = gnssDevice->get_gps_interface(gnssDevice);
+}
+
+Gnss::~Gnss() {
+    sThreadFuncArgsList.clear();
+}
+
+void Gnss::locationCb(GpsLocation* location) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (location == nullptr) {
+        ALOGE("%s: Invalid location from GNSS HAL", __func__);
+        return;
+    }
+
+    android::hardware::gnss::V1_0::GnssLocation gnssLocation = convertToGnssLocation(location);
+    sGnssCbIface->gnssLocationCb(gnssLocation);
+}
+
+void Gnss::statusCb(GpsStatus* gnssStatus) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (gnssStatus == nullptr) {
+        ALOGE("%s: Invalid GpsStatus from GNSS HAL", __func__);
+        return;
+    }
+
+    IGnssCallback::GnssStatusValue status =
+            static_cast<IGnssCallback::GnssStatusValue>(gnssStatus->status);
+
+    sGnssCbIface->gnssStatusCb(status);
+}
+
+void Gnss::gnssSvStatusCb(GnssSvStatus* status) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (status == nullptr) {
+        ALOGE("Invalid status from GNSS HAL %s", __func__);
+        return;
+    }
+
+    IGnssCallback::GnssSvStatus svStatus;
+    svStatus.numSvs = status->num_svs;
+
+    if (svStatus.numSvs > static_cast<uint32_t>(GnssMax::SVS_COUNT)) {
+        ALOGW("Too many satellites %zd. Clamps to %d.", svStatus.numSvs, GnssMax::SVS_COUNT);
+        svStatus.numSvs = static_cast<uint32_t>(GnssMax::SVS_COUNT);
+    }
+
+    for (size_t i = 0; i < svStatus.numSvs; i++) {
+        auto svInfo = status->gnss_sv_list[i];
+        IGnssCallback::GnssSvInfo gnssSvInfo = {
+            .svid = svInfo.svid,
+            .constellation = static_cast<android::hardware::gnss::V1_0::GnssConstellationType>(
+                    svInfo.constellation),
+            .cN0Dbhz = svInfo.c_n0_dbhz,
+            .elevationDegrees = svInfo.elevation,
+            .azimuthDegrees = svInfo.azimuth,
+            .svFlag = static_cast<IGnssCallback::GnssSvFlags>(svInfo.flags)
+        };
+        svStatus.gnssSvList[i] = gnssSvInfo;
+    }
+
+    sGnssCbIface->gnssSvStatusCb(svStatus);
+}
+
+/*
+ * This enum is used by gpsSvStatusCb() method below to convert GpsSvStatus
+ * to GnssSvStatus for backward compatibility. It is only used by the default
+ * implementation and is not part of the GNSS interface.
+ */
+enum SvidValues : uint16_t {
+    GLONASS_SVID_OFFSET = 64,
+    GLONASS_SVID_COUNT = 24,
+    BEIDOU_SVID_OFFSET = 200,
+    BEIDOU_SVID_COUNT = 35,
+    SBAS_SVID_MIN = 33,
+    SBAS_SVID_MAX = 64,
+    SBAS_SVID_ADD = 87,
+    QZSS_SVID_MIN = 193,
+    QZSS_SVID_MAX = 200
+};
+
+/*
+ * The following code that converts GpsSvStatus to GnssSvStatus is moved here from
+ * GnssLocationProvider. GnssLocationProvider does not require it anymore since GpsSvStatus is
+ * being deprecated and is no longer part of the GNSS interface.
+ */
+void Gnss::gpsSvStatusCb(GpsSvStatus* svInfo) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (svInfo == nullptr) {
+        ALOGE("Invalid status from GNSS HAL %s", __func__);
+        return;
+    }
+
+    IGnssCallback::GnssSvStatus svStatus;
+    svStatus.numSvs = svInfo->num_svs;
+    /*
+     * Clamp the list size since GnssSvStatus can support a maximum of
+     * GnssMax::SVS_COUNT entries.
+     */
+    if (svStatus.numSvs > static_cast<uint32_t>(GnssMax::SVS_COUNT)) {
+        ALOGW("Too many satellites %zd. Clamps to %d.", svStatus.numSvs, GnssMax::SVS_COUNT);
+        svStatus.numSvs = static_cast<uint32_t>(GnssMax::SVS_COUNT);
+    }
+
+    uint32_t ephemerisMask = svInfo->ephemeris_mask;
+    uint32_t almanacMask = svInfo->almanac_mask;
+    uint32_t usedInFixMask = svInfo->used_in_fix_mask;
+    /*
+     * Conversion from GpsSvInfo to IGnssCallback::GnssSvInfo happens below.
+     */
+    for (size_t i = 0; i < svStatus.numSvs; i++) {
+        IGnssCallback::GnssSvInfo& info = svStatus.gnssSvList[i];
+        info.svid = svInfo->sv_list[i].prn;
+        if (info.svid >= 1 && info.svid <= 32) {
+            info.constellation = GnssConstellationType::GPS;
+        } else if (info.svid > GLONASS_SVID_OFFSET &&
+                   info.svid <= GLONASS_SVID_OFFSET + GLONASS_SVID_COUNT) {
+            info.constellation = GnssConstellationType::GLONASS;
+            info.svid -= GLONASS_SVID_OFFSET;
+        } else if (info.svid > BEIDOU_SVID_OFFSET &&
+                 info.svid <= BEIDOU_SVID_OFFSET + BEIDOU_SVID_COUNT) {
+            info.constellation = GnssConstellationType::BEIDOU;
+            info.svid -= BEIDOU_SVID_OFFSET;
+        } else if (info.svid >= SBAS_SVID_MIN && info.svid <= SBAS_SVID_MAX) {
+            info.constellation = GnssConstellationType::SBAS;
+            info.svid += SBAS_SVID_ADD;
+        } else if (info.svid >= QZSS_SVID_MIN && info.svid <= QZSS_SVID_MAX) {
+            info.constellation = GnssConstellationType::QZSS;
+        } else {
+            ALOGD("Unknown constellation type with Svid = %d.", info.svid);
+            info.constellation = GnssConstellationType::UNKNOWN;
+        }
+
+        info.cN0Dbhz = svInfo->sv_list[i].snr;
+        info.elevationDegrees = svInfo->sv_list[i].elevation;
+        info.azimuthDegrees = svInfo->sv_list[i].azimuth;
+        info.svFlag = IGnssCallback::GnssSvFlags::NONE;
+
+        /*
+         * Only GPS info is valid for these fields, as these masks are just 32
+         * bits, by GPS prn.
+         */
+        if (info.constellation == GnssConstellationType::GPS) {
+            int32_t svidMask = (1 << (info.svid - 1));
+            if ((ephemerisMask & svidMask) != 0) {
+                info.svFlag |= IGnssCallback::GnssSvFlags::HAS_EPHEMERIS_DATA;
+            }
+            if ((almanacMask & svidMask) != 0) {
+                info.svFlag |= IGnssCallback::GnssSvFlags::HAS_ALMANAC_DATA;
+            }
+            if ((usedInFixMask & svidMask) != 0) {
+                info.svFlag |= IGnssCallback::GnssSvFlags::USED_IN_FIX;
+            }
+        }
+    }
+
+    sGnssCbIface->gnssSvStatusCb(svStatus);
+}
+
+void Gnss::nmeaCb(GpsUtcTime timestamp, const char* nmea, int length) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    android::hardware::hidl_string nmeaString;
+    nmeaString.setToExternal(nmea, length);
+    sGnssCbIface->gnssNmeaCb(timestamp, nmeaString);
+}
+
+void Gnss::setCapabilitiesCb(uint32_t capabilities) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sGnssCbIface->gnssSetCapabilitesCb(capabilities);
+}
+
+void Gnss::acquireWakelockCb() {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sGnssCbIface->gnssAcquireWakelockCb();
+}
+
+void Gnss::releaseWakelockCb() {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sGnssCbIface->gnssReleaseWakelockCb();
+}
+
+void Gnss::requestUtcTimeCb() {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sGnssCbIface->gnssRequestTimeCb();
+}
+
+pthread_t Gnss::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+void Gnss::setSystemInfoCb(const LegacyGnssSystemInfo* info) {
+    if (sGnssCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (info == nullptr) {
+        ALOGE("Invalid GnssSystemInfo from GNSS HAL %s", __func__);
+        return;
+    }
+
+    IGnssCallback::GnssSystemInfo gnssInfo = {
+        .yearOfHw = info->year_of_hw
+    };
+
+    sGnssCbIface->gnssSetSystemInfoCb(gnssInfo);
+}
+
+
+// Methods from ::android::hardware::gnss::V1_0::IGnss follow.
+Return<bool> Gnss::setCallback(const sp<IGnssCallback>& callback)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+        return false;
+    }
+
+    sGnssCbIface = callback;
+
+    return (mGnssIface->init(&sGnssCb) == 0);
+}
+
+Return<bool> Gnss::start()  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mGnssIface->start() == 0);
+}
+
+Return<bool> Gnss::stop()  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mGnssIface->stop() == 0);
+}
+
+Return<void> Gnss::cleanup()  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        mGnssIface->cleanup();
+    }
+    return Void();
+}
+
+Return<bool> Gnss::injectLocation(double latitudeDegrees,
+                                  double longitudeDegrees,
+                                  float accuracyMeters)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mGnssIface->inject_location(latitudeDegrees, longitudeDegrees, accuracyMeters) == 0);
+}
+
+Return<bool> Gnss::injectTime(int64_t timeMs, int64_t timeReferenceMs,
+                              int32_t uncertaintyMs) {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mGnssIface->inject_time(timeMs, timeReferenceMs, uncertaintyMs) == 0);
+}
+
+Return<void> Gnss::deleteAidingData(IGnss::GnssAidingData aidingDataFlags)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        mGnssIface->delete_aiding_data(static_cast<GpsAidingData>(aidingDataFlags));
+    }
+    return Void();
+}
+
+Return<bool> Gnss::setPositionMode(IGnss::GnssPositionMode mode,
+                                   IGnss::GnssPositionRecurrence recurrence,
+                                   uint32_t minIntervalMs,
+                                   uint32_t preferredAccuracyMeters,
+                                   uint32_t preferredTimeMs)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+        return false;
+    }
+
+    return (mGnssIface->set_position_mode(static_cast<GpsPositionMode>(mode),
+                                          static_cast<GpsPositionRecurrence>(recurrence),
+                                          minIntervalMs,
+                                          preferredAccuracyMeters,
+                                          preferredTimeMs) == 0);
+}
+
+Return<void> Gnss::getExtensionAGnssRil(getExtensionAGnssRil_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const AGpsRilInterface* agpsRilIface = static_cast<const AGpsRilInterface*>(
+                mGnssIface->get_extension(AGPS_RIL_INTERFACE));
+        if (agpsRilIface == nullptr) {
+            ALOGE("%s GnssRil interface not implemented by GNSS HAL", __func__);
+        } else {
+            mGnssRil = new AGnssRil(agpsRilIface);
+        }
+    }
+    _hidl_cb(mGnssRil);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionGnssConfiguration(getExtensionGnssConfiguration_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GnssConfigurationInterface* gnssConfigIface =
+                static_cast<const GnssConfigurationInterface*>(
+                        mGnssIface->get_extension(GNSS_CONFIGURATION_INTERFACE));
+
+        if (gnssConfigIface == nullptr) {
+            ALOGE("%s GnssConfiguration interface not implemented by GNSS HAL", __func__);
+        } else {
+            mGnssConfig = new GnssConfiguration(gnssConfigIface);
+        }
+    }
+    _hidl_cb(mGnssConfig);
+    return Void();
+}
+Return<void> Gnss::getExtensionGnssGeofencing(getExtensionGnssGeofencing_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GpsGeofencingInterface* gpsGeofencingIface =
+                static_cast<const GpsGeofencingInterface*>(
+                        mGnssIface->get_extension(GPS_GEOFENCING_INTERFACE));
+
+        if (gpsGeofencingIface == nullptr) {
+            ALOGE("%s GnssGeofencing interface not implemented by GNSS HAL", __func__);
+        } else {
+            mGnssGeofencingIface = new GnssGeofencing(gpsGeofencingIface);
+        }
+    }
+
+    _hidl_cb(mGnssGeofencingIface);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionAGnss(getExtensionAGnss_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const AGpsInterface* agpsIface = static_cast<const AGpsInterface*>(
+                mGnssIface->get_extension(AGPS_INTERFACE));
+        if (agpsIface == nullptr) {
+            ALOGE("%s AGnss interface not implemented by GNSS HAL", __func__);
+        } else {
+            mAGnssIface = new AGnss(agpsIface);
+        }
+    }
+    _hidl_cb(mAGnssIface);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionGnssNi(getExtensionGnssNi_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GpsNiInterface* gpsNiIface = static_cast<const GpsNiInterface*>(
+                mGnssIface->get_extension(GPS_NI_INTERFACE));
+        if (gpsNiIface == nullptr) {
+            ALOGE("%s GnssNi interface not implemented by GNSS HAL", __func__);
+        } else {
+            mGnssNi = new GnssNi(gpsNiIface);
+        }
+    }
+    _hidl_cb(mGnssNi);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionGnssMeasurement(getExtensionGnssMeasurement_cb _hidl_cb) {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GpsMeasurementInterface* gpsMeasurementIface =
+                static_cast<const GpsMeasurementInterface*>(
+                        mGnssIface->get_extension(GPS_MEASUREMENT_INTERFACE));
+
+        if (gpsMeasurementIface == nullptr) {
+            ALOGE("%s GnssMeasurement interface not implemented by GNSS HAL", __func__);
+        } else {
+            mGnssMeasurement = new GnssMeasurement(gpsMeasurementIface);
+        }
+    }
+    _hidl_cb(mGnssMeasurement);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionGnssNavigationMessage(
+        getExtensionGnssNavigationMessage_cb _hidl_cb) {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GpsNavigationMessageInterface* gpsNavigationMessageIface =
+                static_cast<const GpsNavigationMessageInterface*>(
+                        mGnssIface->get_extension(GPS_NAVIGATION_MESSAGE_INTERFACE));
+
+        if (gpsNavigationMessageIface == nullptr) {
+            ALOGE("%s GnssNavigationMessage interface not implemented by GNSS HAL",
+                  __func__);
+        } else {
+            mGnssNavigationMessage = new GnssNavigationMessage(gpsNavigationMessageIface);
+        }
+    }
+
+    _hidl_cb(mGnssNavigationMessage);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionXtra(getExtensionXtra_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GpsXtraInterface* gpsXtraIface = static_cast<const GpsXtraInterface*>(
+                mGnssIface->get_extension(GPS_XTRA_INTERFACE));
+
+        if (gpsXtraIface == nullptr) {
+            ALOGE("%s GnssXtra interface not implemented by HAL", __func__);
+        } else {
+            mGnssXtraIface = new GnssXtra(gpsXtraIface);
+        }
+    }
+
+    _hidl_cb(mGnssXtraIface);
+    return Void();
+}
+
+Return<void> Gnss::getExtensionGnssDebug(getExtensionGnssDebug_cb _hidl_cb)  {
+    if (mGnssIface == nullptr) {
+        ALOGE("%s: Gnss interface is unavailable", __func__);
+    } else {
+        const GpsDebugInterface* gpsDebugIface = static_cast<const GpsDebugInterface*>(
+                mGnssIface->get_extension(GPS_DEBUG_INTERFACE));
+
+        if (gpsDebugIface == nullptr) {
+            ALOGE("%s: GnssDebug interface is not implemented by HAL", __func__);
+        } else {
+            mGnssDebug = new GnssDebug(gpsDebugIface);
+        }
+    }
+
+    _hidl_cb(mGnssDebug);
+    return Void();
+}
+
+IGnss* HIDL_FETCH_IGnss(const char* hal) {
+    hw_module_t* module;
+    IGnss* iface = nullptr;
+    int err = hw_get_module(GPS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
+
+    if (err == 0) {
+        hw_device_t* device;
+        err = module->methods->open(module, GPS_HARDWARE_MODULE_ID, &device);
+        if (err == 0) {
+            iface = new Gnss(reinterpret_cast<gps_device_t*>(device));
+        } else {
+            ALOGE("gnssDevice open %s failed: %d", hal, err);
+        }
+    } else {
+      ALOGE("gnss hw_get_module %s failed: %d", hal, err);
+    }
+    return iface;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/Gnss.h b/gnss/1.0/default/Gnss.h
new file mode 100644
index 0000000..a2c8676
--- /dev/null
+++ b/gnss/1.0/default/Gnss.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_Gnss_H_
+#define android_hardware_gnss_V1_0_Gnss_H_
+
+#include <AGnss.h>
+#include <AGnssRil.h>
+#include <GnssConfiguration.h>
+#include <GnssDebug.h>
+#include <GnssGeofencing.h>
+#include <GnssMeasurement.h>
+#include <GnssNavigationMessage.h>
+#include <GnssNi.h>
+#include <GnssXtra.h>
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IGnss.h>
+#include <hardware/gps.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+using LegacyGnssSystemInfo = ::GnssSystemInfo;
+
+/*
+ * Represents the standard GNSS interface. Also contains wrapper methods to allow methods from
+ * IGnssCallback interface to be passed into the conventional implementation of the GNSS HAL.
+ */
+struct Gnss : public IGnss {
+    Gnss(gps_device_t* gnss_device);
+    ~Gnss();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnss follow.
+     * These declarations were generated from Gnss.hal.
+     */
+    Return<bool> setCallback(const sp<IGnssCallback>& callback)  override;
+    Return<bool> start()  override;
+    Return<bool> stop()  override;
+    Return<void> cleanup()  override;
+    Return<bool> injectLocation(double latitudeDegrees,
+                                double longitudeDegrees,
+                                float accuracyMeters)  override;
+    Return<bool> injectTime(int64_t timeMs,
+                            int64_t timeReferenceMs,
+                            int32_t uncertaintyMs) override;
+    Return<void> deleteAidingData(IGnss::GnssAidingData aidingDataFlags)  override;
+    Return<bool> setPositionMode(IGnss::GnssPositionMode mode,
+                                 IGnss::GnssPositionRecurrence recurrence,
+                                 uint32_t minIntervalMs,
+                                 uint32_t preferredAccuracyMeters,
+                                 uint32_t preferredTimeMs)  override;
+    Return<void> getExtensionAGnssRil(getExtensionAGnssRil_cb _hidl_cb) override;
+    Return<void> getExtensionGnssGeofencing(getExtensionGnssGeofencing_cb _hidl_cb)  override;
+    Return<void> getExtensionAGnss(getExtensionAGnss_cb _hidl_cb)  override;
+    Return<void> getExtensionGnssNi(getExtensionGnssNi_cb _hidl_cb)  override;
+    Return<void> getExtensionGnssMeasurement(getExtensionGnssMeasurement_cb _hidl_cb)  override;
+    Return<void> getExtensionGnssNavigationMessage(
+        getExtensionGnssNavigationMessage_cb _hidl_cb)  override;
+    Return<void> getExtensionXtra(getExtensionXtra_cb _hidl_cb)  override;
+    Return<void> getExtensionGnssDebug(getExtensionGnssDebug_cb _hidl_cb)  override;
+    Return<void> getExtensionGnssConfiguration(getExtensionGnssConfiguration_cb _hidl_cb) override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default
+     * implementation. These methods are not part of the IGnss base class.
+     */
+    static void locationCb(GpsLocation* location);
+    static void statusCb(GpsStatus* gnss_status);
+    static void nmeaCb(GpsUtcTime timestamp, const char* nmea, int length);
+    static void setCapabilitiesCb(uint32_t capabilities);
+    static void acquireWakelockCb();
+    static void releaseWakelockCb();
+    static void requestUtcTimeCb();
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+    static void gnssSvStatusCb(GnssSvStatus* status);
+    /*
+     * Deprecated callback added for backward compatibility to devices that do
+     * not support GnssSvStatus.
+     */
+    static void gpsSvStatusCb(GpsSvStatus* status);
+    static void setSystemInfoCb(const LegacyGnssSystemInfo* info);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static GpsCallbacks sGnssCb;
+
+ private:
+    sp<GnssXtra> mGnssXtraIface = nullptr;
+    sp<AGnssRil> mGnssRil = nullptr;
+    sp<GnssGeofencing> mGnssGeofencingIface = nullptr;
+    sp<AGnss> mAGnssIface = nullptr;
+    sp<GnssNi> mGnssNi = nullptr;
+    sp<GnssMeasurement> mGnssMeasurement = nullptr;
+    sp<GnssNavigationMessage> mGnssNavigationMessage = nullptr;
+    sp<GnssDebug> mGnssDebug = nullptr;
+    sp<GnssConfiguration> mGnssConfig = nullptr;
+    const GpsInterface* mGnssIface = nullptr;
+    static sp<IGnssCallback> sGnssCbIface;
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static bool sInterfaceExists;
+};
+
+extern "C" IGnss* HIDL_FETCH_IGnss(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_Gnss_H_
diff --git a/gnss/1.0/default/GnssConfiguration.cpp b/gnss/1.0/default/GnssConfiguration.cpp
new file mode 100644
index 0000000..9031c06
--- /dev/null
+++ b/gnss/1.0/default/GnssConfiguration.cpp
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssConfigurationInterface"
+
+#include "GnssConfiguration.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+GnssConfiguration::GnssConfiguration(const GnssConfigurationInterface* gnssConfigInfc)
+    : mGnssConfigIface(gnssConfigInfc) {}
+
+// Methods from ::android::hardware::gps::V1_0::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setSuplEs(bool enabled)  {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "SUPL_ES=" + std::to_string(enabled ? 1 : 0) + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+    return true;
+}
+
+Return<bool> GnssConfiguration::setSuplVersion(uint32_t version)  {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "SUPL_VER=" + std::to_string(version) + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+
+    return true;
+}
+
+Return<bool> GnssConfiguration::setSuplMode(uint8_t mode)  {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "SUPL_MODE=" + std::to_string(mode) + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+    return true;
+}
+
+Return<bool> GnssConfiguration::setLppProfile(uint8_t lppProfile) {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "LPP_PROFILE=" + std::to_string(lppProfile) + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+    return true;
+}
+
+Return<bool> GnssConfiguration::setGlonassPositioningProtocol(uint8_t protocol) {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "A_GLONASS_POS_PROTOCOL_SELECT=" +
+            std::to_string(protocol) + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+    return true;
+}
+
+Return<bool> GnssConfiguration::setGpsLock(uint8_t lock) {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "GPS_LOCK=" + std::to_string(lock) + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+    return true;
+}
+
+Return<bool> GnssConfiguration::setEmergencySuplPdn(bool enabled) {
+    if (mGnssConfigIface == nullptr) {
+        ALOGE("%s: GNSS Configuration interface is not available.", __func__);
+        return false;
+    }
+
+    std::string config = "USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL=" + std::to_string(enabled ? 1 : 0)
+            + "\n";
+    mGnssConfigIface->configuration_update(config.c_str(), config.size());
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssConfiguration.h b/gnss/1.0/default/GnssConfiguration.h
new file mode 100644
index 0000000..a6eca88
--- /dev/null
+++ b/gnss/1.0/default/GnssConfiguration.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#ifndef android_hardware_gnss_V1_0_GnssConfiguration_H_
+#define android_hardware_gnss_V1_0_GnssConfiguration_H_
+
+#include <android/hardware/gnss/1.0/IGnssConfiguration.h>
+#include <hardware/gps.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssConfiguration;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Interface for passing GNSS configuration info from platform to HAL.
+ */
+struct GnssConfiguration : public IGnssConfiguration {
+    GnssConfiguration(const GnssConfigurationInterface* gnssConfigIface);
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssConfiguration follow.
+     * These declarations were generated from IGnssConfiguration.hal.
+     */
+    Return<bool> setSuplVersion(uint32_t version) override;
+    Return<bool> setSuplMode(uint8_t mode) override;
+    Return<bool> setSuplEs(bool enabled) override;
+    Return<bool> setLppProfile(uint8_t lppProfile) override;
+    Return<bool> setGlonassPositioningProtocol(uint8_t protocol) override;
+    Return<bool> setEmergencySuplPdn(bool enable) override;
+    Return<bool> setGpsLock(uint8_t lock) override;
+
+ private:
+    const GnssConfigurationInterface* mGnssConfigIface = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssConfiguration_H_
diff --git a/gnss/1.0/default/GnssDebug.cpp b/gnss/1.0/default/GnssDebug.cpp
new file mode 100644
index 0000000..e227e17
--- /dev/null
+++ b/gnss/1.0/default/GnssDebug.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssDebugInterface"
+
+#include "GnssDebug.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+GnssDebug::GnssDebug(const GpsDebugInterface* gpsDebugIface) : mGnssDebugIface(gpsDebugIface) {}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssDebug follow.
+Return<void> GnssDebug::getDebugData(getDebugData_cb _hidl_cb)  {
+    /*
+     * This is a new interface and hence there is no way to retrieve the
+     * debug data from the HAL.
+     */
+    DebugData data = {};
+
+    _hidl_cb(data);
+
+    /*
+     * Log the debug data sent from the conventional Gnss HAL. This code is
+     * moved here from GnssLocationProvider.
+     */
+    if (mGnssDebugIface) {
+        char buffer[kMaxDebugStrLen + 1];
+        size_t length = mGnssDebugIface->get_internal_state(buffer, kMaxDebugStrLen);
+        length = std::max(length, kMaxDebugStrLen);
+        buffer[length] = '\0';
+        ALOGD("Gnss Debug Data: %s", buffer);
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssDebug.h b/gnss/1.0/default/GnssDebug.h
new file mode 100644
index 0000000..9a17dde
--- /dev/null
+++ b/gnss/1.0/default/GnssDebug.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_GnssDebug_H_
+#define android_hardware_gnss_V1_0_GnssDebug_H_
+
+#include <android/hardware/gnss/1.0/IGnssDebug.h>
+#include <hidl/Status.h>
+#include <hardware/gps.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssDebug;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/* Interface for GNSS Debug support. */
+struct GnssDebug : public IGnssDebug {
+    GnssDebug(const GpsDebugInterface* gpsDebugIface);
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssDebug follow.
+     * These declarations were generated from IGnssDebug.hal.
+     */
+    Return<void> getDebugData(getDebugData_cb _hidl_cb)  override;
+
+ private:
+    /*
+     * Constant added for backward compatibility to conventional GPS Hals which
+     * returned a debug string.
+     */
+    const size_t kMaxDebugStrLen = 2047;
+    const GpsDebugInterface* mGnssDebugIface = nullptr;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssDebug_H_
diff --git a/gnss/1.0/default/GnssGeofencing.cpp b/gnss/1.0/default/GnssGeofencing.cpp
new file mode 100644
index 0000000..f42de42
--- /dev/null
+++ b/gnss/1.0/default/GnssGeofencing.cpp
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHal_GnssGeofencing"
+
+#include "GnssGeofencing.h"
+#include <GnssUtils.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> GnssGeofencing::sThreadFuncArgsList;
+sp<IGnssGeofenceCallback> GnssGeofencing::mGnssGeofencingCbIface = nullptr;
+bool GnssGeofencing::sInterfaceExists = false;
+
+GpsGeofenceCallbacks GnssGeofencing::sGnssGfCb = {
+    .geofence_transition_callback = gnssGfTransitionCb,
+    .geofence_status_callback = gnssGfStatusCb,
+    .geofence_add_callback = gnssGfAddCb,
+    .geofence_remove_callback = gnssGfRemoveCb,
+    .geofence_pause_callback = gnssGfPauseCb,
+    .geofence_resume_callback = gnssGfResumeCb,
+    .create_thread_cb = createThreadCb
+};
+
+GnssGeofencing::GnssGeofencing(const GpsGeofencingInterface* gpsGeofencingIface)
+    : mGnssGeofencingIface(gpsGeofencingIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+GnssGeofencing::~GnssGeofencing() {
+    sThreadFuncArgsList.clear();
+}
+void GnssGeofencing::gnssGfTransitionCb(int32_t geofenceId,
+                                        GpsLocation* location,
+                                        int32_t transition,
+                                        GpsUtcTime timestamp) {
+    if (mGnssGeofencingCbIface == nullptr) {
+        ALOGE("%s: GNSS Geofence Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (location == nullptr) {
+        ALOGE("%s : Invalid location from GNSS HAL", __func__);
+        return;
+    }
+
+    GnssLocation gnssLocation = convertToGnssLocation(location);
+    mGnssGeofencingCbIface->gnssGeofenceTransitionCb(
+            geofenceId,
+            gnssLocation,
+            static_cast<IGnssGeofenceCallback::GeofenceTransition>(transition),
+            timestamp);
+}
+
+void GnssGeofencing::gnssGfStatusCb(int32_t status, GpsLocation* location) {
+    if (mGnssGeofencingCbIface == nullptr) {
+        ALOGE("%s: GNSS Geofence Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    GnssLocation gnssLocation;
+
+    if (location != nullptr) {
+        gnssLocation = convertToGnssLocation(location);
+    } else {
+        gnssLocation = {};
+    }
+
+    mGnssGeofencingCbIface->gnssGeofenceStatusCb(
+            static_cast<IGnssGeofenceCallback::GeofenceAvailability>(status), gnssLocation);
+}
+
+void GnssGeofencing::gnssGfAddCb(int32_t geofenceId, int32_t status) {
+    if (mGnssGeofencingCbIface == nullptr) {
+        ALOGE("%s: GNSS Geofence Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    mGnssGeofencingCbIface->gnssGeofenceAddCb(
+            geofenceId, static_cast<IGnssGeofenceCallback::GeofenceStatus>(status));
+}
+
+void GnssGeofencing::gnssGfRemoveCb(int32_t geofenceId, int32_t status) {
+    if (mGnssGeofencingCbIface == nullptr) {
+        ALOGE("%s: GNSS Geofence Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    mGnssGeofencingCbIface->gnssGeofenceRemoveCb(
+      geofenceId, static_cast<IGnssGeofenceCallback::GeofenceStatus>(status));
+}
+
+void GnssGeofencing::gnssGfPauseCb(int32_t geofenceId, int32_t status) {
+    if (mGnssGeofencingCbIface == nullptr) {
+        ALOGE("%s: GNSS Geofence Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    mGnssGeofencingCbIface->gnssGeofencePauseCb(
+            geofenceId, static_cast<IGnssGeofenceCallback::GeofenceStatus>(status));
+}
+
+void GnssGeofencing::gnssGfResumeCb(int32_t geofenceId, int32_t status) {
+    if (mGnssGeofencingCbIface == nullptr) {
+        ALOGE("%s: GNSS Geofence Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    mGnssGeofencingCbIface->gnssGeofenceResumeCb(
+            geofenceId, static_cast<IGnssGeofenceCallback::GeofenceStatus>(status));
+}
+
+pthread_t GnssGeofencing::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssGeofencing follow.
+Return<void> GnssGeofencing::setCallback(const sp<IGnssGeofenceCallback>& callback)  {
+    mGnssGeofencingCbIface = callback;
+
+    if (mGnssGeofencingIface == nullptr) {
+        ALOGE("%s: GnssGeofencing interface is not available", __func__);
+    } else {
+        mGnssGeofencingIface->init(&sGnssGfCb);
+    }
+
+    return Void();
+}
+
+Return<void> GnssGeofencing::addGeofence(
+        int32_t geofenceId,
+        double latitudeDegrees,
+        double longitudeDegrees,
+        double radiusMeters,
+        IGnssGeofenceCallback::GeofenceTransition lastTransition,
+        int32_t monitorTransitions,
+        uint32_t notificationResponsivenessMs,
+        uint32_t unknownTimerMs)  {
+    if (mGnssGeofencingIface == nullptr) {
+        ALOGE("%s: GnssGeofencing interface is not available", __func__);
+        return Void();
+    } else {
+        mGnssGeofencingIface->add_geofence_area(
+                geofenceId,
+                latitudeDegrees,
+                longitudeDegrees,
+                radiusMeters,
+                static_cast<int32_t>(lastTransition),
+                monitorTransitions,
+                notificationResponsivenessMs,
+                unknownTimerMs);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::pauseGeofence(int32_t geofenceId)  {
+    if (mGnssGeofencingIface == nullptr) {
+        ALOGE("%s: GnssGeofencing interface is not available", __func__);
+    } else {
+        mGnssGeofencingIface->pause_geofence(geofenceId);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::resumeGeofence(int32_t geofenceId, int32_t monitorTransitions)  {
+    if (mGnssGeofencingIface == nullptr) {
+        ALOGE("%s: GnssGeofencing interface is not available", __func__);
+    } else {
+        mGnssGeofencingIface->resume_geofence(geofenceId, monitorTransitions);
+    }
+    return Void();
+}
+
+Return<void> GnssGeofencing::removeGeofence(int32_t geofenceId)  {
+    if (mGnssGeofencingIface == nullptr) {
+        ALOGE("%s: GnssGeofencing interface is not available", __func__);
+    } else {
+        mGnssGeofencingIface->remove_geofence_area(geofenceId);
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssGeofencing.h b/gnss/1.0/default/GnssGeofencing.h
new file mode 100644
index 0000000..124b893
--- /dev/null
+++ b/gnss/1.0/default/GnssGeofencing.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_GnssGeofencing_H_
+#define android_hardware_gnss_V1_0_GnssGeofencing_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IGnssGeofencing.h>
+#include <hidl/Status.h>
+#include <hardware/gps.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssGeofenceCallback;
+using ::android::hardware::gnss::V1_0::IGnssGeofencing;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Interface for GNSS Geofencing support. It also contains wrapper methods to allow
+ * methods from IGnssGeofenceCallback interface to be passed into the
+ * conventional implementation of the GNSS HAL.
+ */
+struct GnssGeofencing : public IGnssGeofencing {
+    GnssGeofencing(const GpsGeofencingInterface* gpsGeofencingIface);
+    ~GnssGeofencing();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssGeofencing follow.
+     * These declarations were generated from IGnssGeofencing.hal.
+     */
+    Return<void> setCallback(const sp<IGnssGeofenceCallback>& callback)  override;
+    Return<void> addGeofence(int32_t geofenceId,
+                             double latitudeDegrees,
+                             double longitudeDegrees,
+                             double radiusMeters,
+                             IGnssGeofenceCallback::GeofenceTransition lastTransition,
+                             int32_t monitorTransitions,
+                             uint32_t notificationResponsivenessMs,
+                             uint32_t unknownTimerMs)  override;
+
+    Return<void> pauseGeofence(int32_t geofenceId)  override;
+    Return<void> resumeGeofence(int32_t geofenceId, int32_t monitorTransitions)  override;
+    Return<void> removeGeofence(int32_t geofenceId)  override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default
+     * implementation. These methods are not part of the IGnssGeofencing base class.
+     */
+    static void gnssGfTransitionCb(int32_t geofence_id, GpsLocation* location,
+                                   int32_t transition, GpsUtcTime timestamp);
+    static void gnssGfStatusCb(int32_t status, GpsLocation* last_location);
+    static void gnssGfAddCb(int32_t geofence_id, int32_t status);
+    static void gnssGfRemoveCb(int32_t geofence_id, int32_t status);
+    static void gnssGfPauseCb(int32_t geofence_id, int32_t status);
+    static void gnssGfResumeCb(int32_t geofence_id, int32_t status);
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static GpsGeofenceCallbacks sGnssGfCb;
+
+ private:
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static sp<IGnssGeofenceCallback> mGnssGeofencingCbIface;
+    const GpsGeofencingInterface* mGnssGeofencingIface = nullptr;
+    static bool sInterfaceExists;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssGeofencing_H_
diff --git a/gnss/1.0/default/GnssMeasurement.cpp b/gnss/1.0/default/GnssMeasurement.cpp
new file mode 100644
index 0000000..9f8d7b5
--- /dev/null
+++ b/gnss/1.0/default/GnssMeasurement.cpp
@@ -0,0 +1,255 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssMeasurementInterface"
+
+#include "GnssMeasurement.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+sp<IGnssMeasurementCallback> GnssMeasurement::sGnssMeasureCbIface = nullptr;
+GpsMeasurementCallbacks GnssMeasurement::sGnssMeasurementCbs = {
+    .size = sizeof(GpsMeasurementCallbacks),
+    .measurement_callback = gpsMeasurementCb,
+    .gnss_measurement_callback = gnssMeasurementCb
+};
+
+GnssMeasurement::GnssMeasurement(const GpsMeasurementInterface* gpsMeasurementIface)
+    : mGnssMeasureIface(gpsMeasurementIface) {}
+
+void GnssMeasurement::gnssMeasurementCb(LegacyGnssData* legacyGnssData) {
+    if (sGnssMeasureCbIface == nullptr) {
+        ALOGE("%s: GNSSMeasurement Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (legacyGnssData == nullptr) {
+        ALOGE("%s: Invalid GnssData from GNSS HAL", __func__);
+        return;
+    }
+
+    IGnssMeasurementCallback::GnssData gnssData;
+    gnssData.measurementCount = std::min(legacyGnssData->measurement_count,
+                                         static_cast<size_t>(GnssMax::SVS_COUNT));
+
+    for (size_t i = 0; i < gnssData.measurementCount; i++) {
+        auto entry = legacyGnssData->measurements[i];
+        gnssData.measurements[i] = {
+            .flags = static_cast<IGnssMeasurementCallback::GnssMeasurementFlags>(entry.flags),
+            .svid = entry.svid,
+            .constellation = static_cast<GnssConstellationType>(entry.constellation),
+            .timeOffsetNs = entry.time_offset_ns,
+            .state = static_cast<IGnssMeasurementCallback::GnssMeasurementState>(entry.state),
+            .receivedSvTimeInNs = entry.received_sv_time_in_ns,
+            .receivedSvTimeUncertaintyInNs = entry.received_sv_time_uncertainty_in_ns,
+            .cN0DbHz = entry.c_n0_dbhz,
+            .pseudorangeRateMps = entry.pseudorange_rate_mps,
+            .pseudorangeRateUncertaintyMps = entry.pseudorange_rate_uncertainty_mps,
+            .accumulatedDeltaRangeState = static_cast<IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState>(
+                    entry.accumulated_delta_range_state),
+            .accumulatedDeltaRangeM = entry.accumulated_delta_range_m,
+            .accumulatedDeltaRangeUncertaintyM = entry.accumulated_delta_range_uncertainty_m,
+            .carrierFrequencyHz = entry.carrier_frequency_hz,
+            .carrierCycles = entry.carrier_cycles,
+            .carrierPhase = entry.carrier_phase,
+            .carrierPhaseUncertainty = entry.carrier_phase_uncertainty,
+            .multipathIndicator = static_cast<IGnssMeasurementCallback::GnssMultipathIndicator>(
+                    entry.multipath_indicator),
+            .snrDb = entry.snr_db
+        };
+    }
+
+    auto clockVal = legacyGnssData->clock;
+    gnssData.clock = {
+        .gnssClockFlags = static_cast<IGnssMeasurementCallback::GnssClockFlags>(clockVal.flags),
+        .leapSecond = clockVal.leap_second,
+        .timeNs = clockVal.time_ns,
+        .timeUncertaintyNs = clockVal.time_uncertainty_ns,
+        .fullBiasNs = clockVal.full_bias_ns,
+        .biasNs = clockVal.bias_ns,
+        .biasUncertaintyNs = clockVal.bias_uncertainty_ns,
+        .driftNsps = clockVal.drift_nsps,
+        .driftUncertaintyNsps = clockVal.drift_uncertainty_nsps,
+        .hwClockDiscontinuityCount = clockVal.hw_clock_discontinuity_count
+    };
+
+    sGnssMeasureCbIface->GnssMeasurementCb(gnssData);
+}
+
+/*
+ * The code in the following method has been moved here from GnssLocationProvider.
+ * It converts GpsData to GnssData. This code is no longer required in
+ * GnssLocationProvider since GpsData is deprecated and no longer part of the
+ * GNSS interface.
+ */
+void GnssMeasurement::gpsMeasurementCb(GpsData* gpsData) {
+    if (sGnssMeasureCbIface == nullptr) {
+        ALOGE("%s: GNSSMeasurement Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (gpsData == nullptr) {
+        ALOGE("%s: Invalid GpsData from GNSS HAL", __func__);
+        return;
+    }
+
+    IGnssMeasurementCallback::GnssData gnssData;
+    gnssData.measurementCount = std::min(gpsData->measurement_count,
+                                         static_cast<size_t>(GnssMax::SVS_COUNT));
+
+
+    for (size_t i = 0; i < gnssData.measurementCount; i++) {
+        auto entry = gpsData->measurements[i];
+        gnssData.measurements[i].flags =
+                static_cast<IGnssMeasurementCallback::GnssMeasurementFlags>(
+                        entry.flags);
+        gnssData.measurements[i].svid = static_cast<int32_t>(entry.prn);
+        if (entry.prn >= 1 && entry.prn <= 32) {
+            gnssData.measurements[i].constellation = GnssConstellationType::GPS;
+        } else {
+            gnssData.measurements[i].constellation =
+                  GnssConstellationType::UNKNOWN;
+        }
+
+        gnssData.measurements[i].timeOffsetNs = entry.time_offset_ns;
+        gnssData.measurements[i].state =
+            static_cast<IGnssMeasurementCallback::GnssMeasurementState>(
+                entry.state);
+        gnssData.measurements[i].receivedSvTimeInNs = entry.received_gps_tow_ns;
+        gnssData.measurements[i].receivedSvTimeUncertaintyInNs =
+            entry.received_gps_tow_uncertainty_ns;
+        gnssData.measurements[i].cN0DbHz = entry.c_n0_dbhz;
+        gnssData.measurements[i].pseudorangeRateMps = entry.pseudorange_rate_mps;
+        gnssData.measurements[i].pseudorangeRateUncertaintyMps =
+                entry.pseudorange_rate_uncertainty_mps;
+        gnssData.measurements[i].accumulatedDeltaRangeState =
+                static_cast<IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState>(
+                entry.accumulated_delta_range_state);
+        gnssData.measurements[i].accumulatedDeltaRangeM =
+                entry.accumulated_delta_range_m;
+        gnssData.measurements[i].accumulatedDeltaRangeUncertaintyM =
+                entry.accumulated_delta_range_uncertainty_m;
+
+        if (entry.flags & GNSS_MEASUREMENT_HAS_CARRIER_FREQUENCY) {
+            gnssData.measurements[i].carrierFrequencyHz = entry.carrier_frequency_hz;
+        } else {
+            gnssData.measurements[i].carrierFrequencyHz = 0;
+        }
+
+        if (entry.flags & GNSS_MEASUREMENT_HAS_CARRIER_PHASE) {
+            gnssData.measurements[i].carrierPhase = entry.carrier_phase;
+        } else {
+            gnssData.measurements[i].carrierPhase = 0;
+        }
+
+        if (entry.flags & GNSS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY) {
+            gnssData.measurements[i].carrierPhaseUncertainty = entry.carrier_phase_uncertainty;
+        } else {
+            gnssData.measurements[i].carrierPhaseUncertainty = 0;
+        }
+
+        gnssData.measurements[i].multipathIndicator =
+                static_cast<IGnssMeasurementCallback::GnssMultipathIndicator>(
+                        entry.multipath_indicator);
+
+        if (entry.flags & GNSS_MEASUREMENT_HAS_SNR) {
+            gnssData.measurements[i].snrDb = entry.snr_db;
+        } else {
+            gnssData.measurements[i].snrDb = 0;
+        }
+    }
+
+    auto clockVal = gpsData->clock;
+    static uint32_t discontinuity_count_to_handle_old_clock_type = 0;
+    auto flags = clockVal.flags;
+
+    gnssData.clock.leapSecond = clockVal.leap_second;
+    /*
+     * GnssClock only supports the more effective HW_CLOCK type, so type
+     * handling and documentation complexity has been removed.  To convert the
+     * old GPS_CLOCK types (active only in a limited number of older devices),
+     * the GPS time information is handled as an always discontinuous HW clock,
+     * with the GPS time information put into the full_bias_ns instead - so that
+     * time_ns - full_bias_ns = local estimate of GPS time. Additionally, the
+     * sign of full_bias_ns and bias_ns has flipped between GpsClock &
+     * GnssClock, so that is also handled below.
+     */
+    switch (clockVal.type) {
+        case GPS_CLOCK_TYPE_UNKNOWN:
+            // Clock type unsupported.
+            ALOGE("Unknown clock type provided.");
+            break;
+        case GPS_CLOCK_TYPE_LOCAL_HW_TIME:
+            // Already local hardware time. No need to do anything.
+            break;
+        case GPS_CLOCK_TYPE_GPS_TIME:
+            // GPS time, need to convert.
+            flags |= GPS_CLOCK_HAS_FULL_BIAS;
+            clockVal.full_bias_ns = clockVal.time_ns;
+            clockVal.time_ns = 0;
+            gnssData.clock.hwClockDiscontinuityCount =
+                    discontinuity_count_to_handle_old_clock_type++;
+            break;
+    }
+
+    gnssData.clock.timeNs = clockVal.time_ns;
+    gnssData.clock.timeUncertaintyNs = clockVal.time_uncertainty_ns;
+    /*
+     * Definition of sign for full_bias_ns & bias_ns has been changed since N,
+     * so flip signs here.
+     */
+    gnssData.clock.fullBiasNs = -(clockVal.full_bias_ns);
+    gnssData.clock.biasNs = -(clockVal.bias_ns);
+    gnssData.clock.biasUncertaintyNs = clockVal.bias_uncertainty_ns;
+    gnssData.clock.driftNsps = clockVal.drift_nsps;
+    gnssData.clock.driftUncertaintyNsps = clockVal.drift_uncertainty_nsps;
+    gnssData.clock.gnssClockFlags =
+      static_cast<IGnssMeasurementCallback::GnssClockFlags>(clockVal.flags);
+
+    sGnssMeasureCbIface->GnssMeasurementCb(gnssData);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssMeasurement follow.
+Return<GnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback(
+        const sp<IGnssMeasurementCallback>& callback)  {
+    if (mGnssMeasureIface == nullptr) {
+        ALOGE("%s: GnssMeasure interface is unavailable", __func__);
+        return GnssMeasurementStatus::ERROR_GENERIC;
+    }
+    sGnssMeasureCbIface = callback;
+
+    return static_cast<GnssMeasurement::GnssMeasurementStatus>(
+            mGnssMeasureIface->init(&sGnssMeasurementCbs));
+}
+
+Return<void> GnssMeasurement::close()  {
+    if (mGnssMeasureIface == nullptr) {
+        ALOGE("%s: GnssMeasure interface is unavailable", __func__);
+    } else {
+        mGnssMeasureIface->close();
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssMeasurement.h b/gnss/1.0/default/GnssMeasurement.h
new file mode 100644
index 0000000..9ff1435
--- /dev/null
+++ b/gnss/1.0/default/GnssMeasurement.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_GnssMeasurement_H_
+#define android_hardware_gnss_V1_0_GnssMeasurement_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IGnssMeasurement.h>
+#include <hidl/Status.h>
+#include <hardware/gps.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssMeasurement;
+using ::android::hardware::gnss::V1_0::IGnssMeasurementCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+using LegacyGnssData = ::GnssData;
+
+/*
+ * Extended interface for GNSS Measurements support. Also contains wrapper methods to allow methods
+ * from IGnssMeasurementCallback interface to be passed into the conventional implementation of the
+ * GNSS HAL.
+ */
+struct GnssMeasurement : public IGnssMeasurement {
+    GnssMeasurement(const GpsMeasurementInterface* gpsMeasurementIface);
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssMeasurement follow.
+     * These declarations were generated from IGnssMeasurement.hal.
+     */
+    Return<GnssMeasurementStatus> setCallback(
+        const sp<IGnssMeasurementCallback>& callback) override;
+    Return<void> close() override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default
+     * implementation. These methods are not part of the IGnssMeasurement base class.
+     */
+    static void gnssMeasurementCb(LegacyGnssData* data);
+     /*
+      * Deprecated callback added for backward compatibity for devices that do
+      * not support GnssData measurements.
+      */
+    static void gpsMeasurementCb(GpsData* data);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static GpsMeasurementCallbacks sGnssMeasurementCbs;
+
+ private:
+    const GpsMeasurementInterface* mGnssMeasureIface = nullptr;
+    static sp<IGnssMeasurementCallback> sGnssMeasureCbIface;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssMeasurement_H_
diff --git a/gnss/1.0/default/GnssNavigationMessage.cpp b/gnss/1.0/default/GnssNavigationMessage.cpp
new file mode 100644
index 0000000..edae938
--- /dev/null
+++ b/gnss/1.0/default/GnssNavigationMessage.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssNavigationMessageInterface"
+
+#include "GnssNavigationMessage.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+sp<IGnssNavigationMessageCallback> GnssNavigationMessage::sGnssNavigationMsgCbIface = nullptr;
+
+GpsNavigationMessageCallbacks GnssNavigationMessage::sGnssNavigationMessageCb = {
+    .size = sizeof(GpsNavigationMessageCallbacks),
+    .navigation_message_callback = nullptr,
+    .gnss_navigation_message_callback = gnssNavigationMessageCb
+};
+
+GnssNavigationMessage::GnssNavigationMessage(
+        const GpsNavigationMessageInterface* gpsNavigationMessageIface) :
+    mGnssNavigationMessageIface(gpsNavigationMessageIface) {}
+
+void GnssNavigationMessage::gnssNavigationMessageCb(LegacyGnssNavigationMessage* message) {
+    if (sGnssNavigationMsgCbIface == nullptr) {
+        ALOGE("%s: GnssNavigation Message Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (message == nullptr) {
+        ALOGE("%s, received invalid GnssNavigationMessage from GNSS HAL", __func__);
+        return;
+    }
+
+    IGnssNavigationMessageCallback::GnssNavigationMessage navigationMsg;
+
+    navigationMsg.svid = message->svid;
+    navigationMsg.type =
+            static_cast<IGnssNavigationMessageCallback::GnssNavigationMessageType>(message->type);
+    navigationMsg.status =
+            static_cast<IGnssNavigationMessageCallback::NavigationMessageStatus>(message->status);
+    navigationMsg.messageId = message->message_id;
+    navigationMsg.submessageId = message->submessage_id;
+    navigationMsg.data.setToExternal(message->data, message->data_length);
+
+    sGnssNavigationMsgCbIface->gnssNavigationMessageCb(navigationMsg);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssNavigationMessage follow.
+Return<GnssNavigationMessage::GnssNavigationMessageStatus> GnssNavigationMessage::setCallback(
+        const sp<IGnssNavigationMessageCallback>& callback)  {
+    if (mGnssNavigationMessageIface == nullptr) {
+        ALOGE("%s: GnssNavigationMessage not available", __func__);
+        return GnssNavigationMessageStatus::ERROR_GENERIC;
+    }
+
+    sGnssNavigationMsgCbIface = callback;
+
+    return static_cast<GnssNavigationMessage::GnssNavigationMessageStatus>(
+            mGnssNavigationMessageIface->init(&sGnssNavigationMessageCb));
+}
+
+Return<void> GnssNavigationMessage::close()  {
+    if (mGnssNavigationMessageIface == nullptr) {
+        ALOGE("%s: GnssNavigationMessage not available", __func__);
+    } else {
+        mGnssNavigationMessageIface->close();
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssNavigationMessage.h b/gnss/1.0/default/GnssNavigationMessage.h
new file mode 100644
index 0000000..882854b
--- /dev/null
+++ b/gnss/1.0/default/GnssNavigationMessage.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_GnssNavigationMessage_H_
+#define android_hardware_gnss_V1_0_GnssNavigationMessage_H_
+
+#include <android/hardware/gnss/1.0/IGnssNavigationMessage.h>
+#include <hidl/Status.h>
+#include <hardware/gps.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssNavigationMessage;
+using ::android::hardware::gnss::V1_0::IGnssNavigationMessageCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+using LegacyGnssNavigationMessage = ::GnssNavigationMessage;
+
+/*
+ * Extended interface for GNSS navigation message reporting support. Also contains wrapper methods
+ * to allow methods from IGnssNavigationMessageCallback interface to be passed into the conventional
+ * implementation of the GNSS HAL.
+ */
+struct GnssNavigationMessage : public IGnssNavigationMessage {
+    GnssNavigationMessage(const GpsNavigationMessageInterface* gpsNavigationMessageIface);
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssNavigationMessage follow.
+     * These declarations were generated from IGnssNavigationMessage.hal.
+     */
+    Return<GnssNavigationMessageStatus> setCallback(
+        const sp<IGnssNavigationMessageCallback>& callback) override;
+    Return<void> close() override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default implementation.
+     * These methods are not part of the IGnssNavigationMessage base class.
+     */
+    static void gnssNavigationMessageCb(LegacyGnssNavigationMessage* message);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static GpsNavigationMessageCallbacks sGnssNavigationMessageCb;
+ private:
+    const GpsNavigationMessageInterface* mGnssNavigationMessageIface = nullptr;
+    static sp<IGnssNavigationMessageCallback> sGnssNavigationMsgCbIface;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssNavigationMessage_H_
diff --git a/gnss/1.0/default/GnssNi.cpp b/gnss/1.0/default/GnssNi.cpp
new file mode 100644
index 0000000..10af1f4
--- /dev/null
+++ b/gnss/1.0/default/GnssNi.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssNiInterface"
+
+#include "GnssNi.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> GnssNi::sThreadFuncArgsList;
+sp<IGnssNiCallback> GnssNi::sGnssNiCbIface = nullptr;
+bool GnssNi::sInterfaceExists = false;
+
+GpsNiCallbacks GnssNi::sGnssNiCb = {
+    .notify_cb = niNotifyCb,
+    .create_thread_cb = createThreadCb
+};
+
+GnssNi::GnssNi(const GpsNiInterface* gpsNiIface) : mGnssNiIface(gpsNiIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+GnssNi::~GnssNi() {
+    sThreadFuncArgsList.clear();
+}
+
+pthread_t GnssNi::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+void GnssNi::niNotifyCb(GpsNiNotification* notification) {
+    if (sGnssNiCbIface == nullptr) {
+        ALOGE("%s: GNSS NI Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (notification == nullptr) {
+        ALOGE("%s: Invalid GpsNotification callback from GNSS HAL", __func__);
+        return;
+    }
+
+    IGnssNiCallback::GnssNiNotification notificationGnss = {
+        .notificationId =  notification->notification_id,
+        .niType = static_cast<IGnssNiCallback::GnssNiType>(notification->ni_type),
+        .notifyFlags =
+                static_cast<IGnssNiCallback::GnssNiNotifyFlags>(notification->notify_flags),
+        .timeoutSec = static_cast<uint32_t>(notification->timeout),
+        .defaultResponse =
+                static_cast<IGnssNiCallback::GnssUserResponseType>(notification->default_response),
+        .requestorId = notification->requestor_id,
+        .notificationMessage = notification->text,
+        .requestorIdEncoding =
+                static_cast<IGnssNiCallback::GnssNiEncodingType>(notification->requestor_id_encoding),
+        .notificationIdEncoding =
+                static_cast<IGnssNiCallback::GnssNiEncodingType>(notification->text_encoding)
+    };
+
+    sGnssNiCbIface->niNotifyCb(notificationGnss);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssNi follow.
+Return<void> GnssNi::setCallback(const sp<IGnssNiCallback>& callback)  {
+    if (mGnssNiIface == nullptr) {
+       ALOGE("%s: GnssNi interface is unavailable", __func__);
+       return Void();
+    }
+
+    sGnssNiCbIface = callback;
+
+    mGnssNiIface->init(&sGnssNiCb);
+    return Void();
+}
+
+Return<void> GnssNi::respond(int32_t notifId, IGnssNiCallback::GnssUserResponseType userResponse)  {
+    if (mGnssNiIface == nullptr) {
+        ALOGE("%s: GnssNi interface is unavailable", __func__);
+    } else {
+        mGnssNiIface->respond(notifId, static_cast<GpsUserResponseType>(userResponse));
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssNi.h b/gnss/1.0/default/GnssNi.h
new file mode 100644
index 0000000..fe850b1
--- /dev/null
+++ b/gnss/1.0/default/GnssNi.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_GnssNi_H_
+#define android_hardware_gnss_V1_0_GnssNi_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IGnssNi.h>
+#include <hidl/Status.h>
+#include <hardware/gps.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssNi;
+using ::android::hardware::gnss::V1_0::IGnssNiCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * Extended interface for Network-initiated (NI) support. This interface is used to respond to
+ * NI notifications originating from the HAL. Also contains wrapper methods to allow methods from
+ * IGnssNiCallback interface to be passed into the conventional implementation of the GNSS HAL.
+ */
+struct GnssNi : public IGnssNi {
+    GnssNi(const GpsNiInterface* gpsNiIface);
+    ~GnssNi();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssNi follow.
+     * These declarations were generated from IGnssNi.hal.
+     */
+    Return<void> setCallback(const sp<IGnssNiCallback>& callback) override;
+    Return<void> respond(int32_t notifId,
+                         IGnssNiCallback::GnssUserResponseType userResponse) override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default
+     * implementation. These methods are not part of the IGnssNi base class.
+     */
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+    static void niNotifyCb(GpsNiNotification* notification);
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static GpsNiCallbacks sGnssNiCb;
+
+ private:
+    const GpsNiInterface* mGnssNiIface = nullptr;
+    static sp<IGnssNiCallback> sGnssNiCbIface;
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static bool sInterfaceExists;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssNi_H_
diff --git a/gnss/1.0/default/GnssUtils.cpp b/gnss/1.0/default/GnssUtils.cpp
new file mode 100644
index 0000000..9f7e356
--- /dev/null
+++ b/gnss/1.0/default/GnssUtils.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "GnssUtils.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using android::hardware::gnss::V1_0::GnssLocation;
+
+GnssLocation convertToGnssLocation(GpsLocation* location) {
+    GnssLocation gnssLocation = {};
+    if (location != nullptr) {
+        gnssLocation = {
+            .gnssLocationFlags = location->flags,
+            .latitudeDegrees = location->latitude,
+            .longitudeDegrees = location->longitude,
+            .altitudeMeters = location->altitude,
+            .speedMetersPerSec = location->speed,
+            .bearingDegrees = location->bearing,
+            .accuracyMeters = location->accuracy,
+            .timestamp = location->timestamp
+        };
+    }
+
+    return gnssLocation;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssUtils.h b/gnss/1.0/default/GnssUtils.h
new file mode 100644
index 0000000..fc2f547
--- /dev/null
+++ b/gnss/1.0/default/GnssUtils.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef android_hardware_gnss_V1_0_GnssUtil_H_
+#define android_hardware_gnss_V1_0_GnssUtil_H_
+
+#include <hardware/gps.h>
+#include <android/hardware/gnss/1.0/types.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+/*
+ * This method converts a GpsLocation struct to a GnssLocation
+ * struct.
+ */
+GnssLocation convertToGnssLocation(GpsLocation* location);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif
diff --git a/gnss/1.0/default/GnssXtra.cpp b/gnss/1.0/default/GnssXtra.cpp
new file mode 100644
index 0000000..065bb33
--- /dev/null
+++ b/gnss/1.0/default/GnssXtra.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHAL_GnssXtraInterface"
+
+#include "GnssXtra.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> GnssXtra::sThreadFuncArgsList;
+sp<IGnssXtraCallback> GnssXtra::sGnssXtraCbIface = nullptr;
+bool GnssXtra::sInterfaceExists = false;
+
+GpsXtraCallbacks GnssXtra::sGnssXtraCb = {
+    .download_request_cb = gnssXtraDownloadRequestCb,
+    .create_thread_cb = createThreadCb,
+};
+
+GnssXtra::~GnssXtra() {
+    sThreadFuncArgsList.clear();
+}
+
+pthread_t GnssXtra::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+GnssXtra::GnssXtra(const GpsXtraInterface* xtraIface) : mGnssXtraIface(xtraIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+void GnssXtra::gnssXtraDownloadRequestCb() {
+    if (sGnssXtraCbIface == nullptr) {
+        ALOGE("%s: GNSS Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sGnssXtraCbIface->downloadRequestCb();
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssXtra follow.
+Return<bool> GnssXtra::setCallback(const sp<IGnssXtraCallback>& callback)  {
+    if (mGnssXtraIface == nullptr) {
+        ALOGE("%s: Gnss Xtra interface is unavailable", __func__);
+        return false;
+    }
+
+    sGnssXtraCbIface = callback;
+
+    return (mGnssXtraIface->init(&sGnssXtraCb) == 0);
+}
+
+Return<bool> GnssXtra::injectXtraData(const hidl_string& xtraData)  {
+    if (mGnssXtraIface == nullptr) {
+        ALOGE("%s: Gnss Xtra interface is unavailable", __func__);
+        return false;
+    }
+
+    char* buf = new char[xtraData.size()];
+    const char* data = xtraData.c_str();
+
+    memcpy(buf, data, xtraData.size());
+
+    int ret = mGnssXtraIface->inject_xtra_data(buf, xtraData.size());
+    delete[] buf;
+    return (ret == 0);
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/1.0/default/GnssXtra.h b/gnss/1.0/default/GnssXtra.h
new file mode 100644
index 0000000..7a0733a
--- /dev/null
+++ b/gnss/1.0/default/GnssXtra.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_0_GnssXtra_H_
+#define android_hardware_gnss_V1_0_GnssXtra_H_
+
+#include <ThreadCreationWrapper.h>
+#include <android/hardware/gnss/1.0/IGnssXtra.h>
+#include <hardware/gps.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::gnss::V1_0::IGnssXtra;
+using ::android::hardware::gnss::V1_0::IGnssXtraCallback;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * This interface is used by the GNSS HAL to request the framework to download XTRA data.
+ * Also contains wrapper methods to allow methods from IGnssXtraCallback interface to be passed
+ * into the conventional implementation of the GNSS HAL.
+ */
+struct GnssXtra : public IGnssXtra {
+    GnssXtra(const GpsXtraInterface* xtraIface);
+    ~GnssXtra();
+
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssXtra follow.
+     * These declarations were generated from IGnssXtra.hal.
+     */
+    Return<bool> setCallback(const sp<IGnssXtraCallback>& callback) override;
+    Return<bool> injectXtraData(const hidl_string& xtraData) override;
+
+    /*
+     * Callback methods to be passed into the conventional GNSS HAL by the default implementation.
+     * These methods are not part of the IGnssXtra base class.
+     */
+    static pthread_t createThreadCb(const char* name, void (*start)(void*), void* arg);
+    static void gnssXtraDownloadRequestCb();
+
+    /*
+     * Holds function pointers to the callback methods.
+     */
+    static GpsXtraCallbacks sGnssXtraCb;
+
+ private:
+    const GpsXtraInterface* mGnssXtraIface = nullptr;
+    static sp<IGnssXtraCallback> sGnssXtraCbIface;
+    static std::vector<std::unique_ptr<ThreadFuncArgs>> sThreadFuncArgsList;
+    static bool sInterfaceExists;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_0_GnssXtra_H_
diff --git a/gnss/1.0/default/ThreadCreationWrapper.cpp b/gnss/1.0/default/ThreadCreationWrapper.cpp
new file mode 100644
index 0000000..2a5638f
--- /dev/null
+++ b/gnss/1.0/default/ThreadCreationWrapper.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ThreadCreationWrapper.h>
+
+void* threadFunc(void* arg) {
+    ThreadFuncArgs* threadArgs = reinterpret_cast<ThreadFuncArgs*>(arg);
+    threadArgs->fptr(threadArgs->args);
+    return nullptr;
+}
+
+pthread_t createPthread(const char* name,
+                        void (*start)(void*),
+                        void* arg, std::vector<std::unique_ptr<ThreadFuncArgs>> * listArgs) {
+    pthread_t threadId;
+    auto threadArgs = new ThreadFuncArgs(start, arg);
+    auto argPtr = std::unique_ptr<ThreadFuncArgs>(threadArgs);
+
+    listArgs->push_back(std::move(argPtr));
+
+    int ret = pthread_create(&threadId, nullptr, threadFunc, reinterpret_cast<void*>(
+            threadArgs));
+    if (ret != 0) {
+        ALOGE("pthread creation unsuccessful");
+    } else {
+        pthread_setname_np(threadId, name);
+    }
+    return threadId;
+}
diff --git a/gnss/1.0/default/ThreadCreationWrapper.h b/gnss/1.0/default/ThreadCreationWrapper.h
new file mode 100644
index 0000000..df0a9e4
--- /dev/null
+++ b/gnss/1.0/default/ThreadCreationWrapper.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_THREADCREATIONWRAPPER_H
+#define ANDROID_HARDWARE_GNSS_THREADCREATIONWRAPPER_H
+
+#include <pthread.h>
+#include <vector>
+#include <cutils/log.h>
+
+typedef void (*threadEntryFunc)(void* ret);
+
+/*
+ * This class facilitates createThreadCb methods in various GNSS interfaces to wrap
+ * pthread_create() from libc since its function signature differs from what is required by the
+ * conventional GNSS HAL. The arguments passed to pthread_create() need to be on heap and not on
+ * the stack of createThreadCb.
+ */
+struct ThreadFuncArgs {
+    ThreadFuncArgs(void (*start)(void*), void* arg) : fptr(start), args(arg) {}
+
+    /* pointer to the function of type void()(void*) that needs to be wrapped */
+    threadEntryFunc fptr;
+    /* argument for fptr to be called with */
+    void* args;
+};
+
+/*
+ * This method is simply a wrapper. It is required since pthread_create() requires an entry
+ * function pointer of type void*()(void*) and the GNSS hal requires as input a function pointer of
+ * type void()(void*).
+ */
+void* threadFunc(void* arg);
+
+/*
+ * This method is called by createThreadCb with a pointer to the vector that
+ * holds the pointers to the thread arguments. The arg and start parameters are
+ * first used to create a ThreadFuncArgs object which is then saved in the
+ * listArgs parameters. The created ThreadFuncArgs object is then used to invoke
+ * threadFunc() method which in-turn invokes pthread_create.
+ */
+pthread_t createPthread(const char* name, void (*start)(void*), void* arg,
+                        std::vector<std::unique_ptr<ThreadFuncArgs>> * listArgs);
+
+#endif