diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index bb26bd3..9400543 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -220,6 +220,13 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.gnss</name>
+        <interface>
+            <name>IGnss</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.allocator</name>
         <!-- New, non-Go devices should use 4.0, tested in vts_treble_vintf_vendor_test -->
diff --git a/gnss/aidl/Android.bp b/gnss/aidl/Android.bp
new file mode 100644
index 0000000..c503190
--- /dev/null
+++ b/gnss/aidl/Android.bp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+aidl_interface {
+    name: "android.hardware.gnss",
+    vendor_available: true,
+    srcs: ["android/hardware/gnss/*.aidl"],
+    stability: "vintf",
+    backend: {
+        java: {
+            platform_apis: true,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/gnss/aidl/OWNERS b/gnss/aidl/OWNERS
new file mode 100644
index 0000000..b7b4a2e
--- /dev/null
+++ b/gnss/aidl/OWNERS
@@ -0,0 +1,4 @@
+gomo@google.com
+smalkos@google.com
+wyattriley@google.com
+yuhany@google.com
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl
new file mode 100644
index 0000000..33377ca
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl
@@ -0,0 +1,22 @@
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL interface (or parcelable). Do not try to
+// edit this file. It looks like you are doing that because you have modified
+// an AIDL interface in a backward-incompatible way, e.g., deleting a function
+// from an interface or a field from a parcelable and it broke the build. That
+// breakage is intended.
+//
+// You must not make a backward incompatible changes to the AIDL files built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IGnss {
+  android.hardware.gnss.IGnssPsds getExtensionPsds();
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssPsds.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssPsds.aidl
new file mode 100644
index 0000000..352a694
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssPsds.aidl
@@ -0,0 +1,23 @@
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL interface (or parcelable). Do not try to
+// edit this file. It looks like you are doing that because you have modified
+// an AIDL interface in a backward-incompatible way, e.g., deleting a function
+// from an interface or a field from a parcelable and it broke the build. That
+// breakage is intended.
+//
+// You must not make a backward incompatible changes to the AIDL files built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IGnssPsds {
+  boolean injectPsdsData(in android.hardware.gnss.PsdsType psdsType, in byte[] psdsData);
+  boolean setCallback(in android.hardware.gnss.IGnssPsdsCallback callback);
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssPsdsCallback.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssPsdsCallback.aidl
new file mode 100644
index 0000000..8413d2c
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssPsdsCallback.aidl
@@ -0,0 +1,22 @@
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL interface (or parcelable). Do not try to
+// edit this file. It looks like you are doing that because you have modified
+// an AIDL interface in a backward-incompatible way, e.g., deleting a function
+// from an interface or a field from a parcelable and it broke the build. That
+// breakage is intended.
+//
+// You must not make a backward incompatible changes to the AIDL files built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IGnssPsdsCallback {
+  void downloadRequestCb(in android.hardware.gnss.PsdsType psdsType);
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/PsdsType.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/PsdsType.aidl
new file mode 100644
index 0000000..9d1984e
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/PsdsType.aidl
@@ -0,0 +1,24 @@
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL interface (or parcelable). Do not try to
+// edit this file. It looks like you are doing that because you have modified
+// an AIDL interface in a backward-incompatible way, e.g., deleting a function
+// from an interface or a field from a parcelable and it broke the build. That
+// breakage is intended.
+//
+// You must not make a backward incompatible changes to the AIDL files built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@Backing(type="int") @VintfStability
+enum PsdsType {
+  LONG_TERM = 1,
+  NORMAL = 2,
+  REALTIME = 3,
+}
diff --git a/gnss/aidl/android/hardware/gnss/IGnss.aidl b/gnss/aidl/android/hardware/gnss/IGnss.aidl
new file mode 100644
index 0000000..1da254c
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IGnss.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.hardware.gnss;
+
+import android.hardware.gnss.IGnssPsds;
+
+/**
+ * Represents the standard GNSS (Global Navigation Satellite System) interface.
+ */
+@VintfStability
+interface IGnss {
+
+    /**
+     * This method returns the IGnssPsds interface.
+     *
+     * @return Handle to the IGnssPsds interface.
+     */
+    IGnssPsds getExtensionPsds();
+}
\ No newline at end of file
diff --git a/gnss/aidl/android/hardware/gnss/IGnssPsds.aidl b/gnss/aidl/android/hardware/gnss/IGnssPsds.aidl
new file mode 100644
index 0000000..6f53d6f
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IGnssPsds.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.hardware.gnss;
+
+import android.hardware.gnss.IGnssPsdsCallback;
+import android.hardware.gnss.PsdsType;
+
+/**
+ * This interface is used by the GNSS HAL to request the framework to download Predicted Satellite
+ * Data Service data.
+ */
+@VintfStability
+interface IGnssPsds {
+
+    /**
+     * Inject the downloaded PSDS data into the GNSS receiver.
+     *
+     * @param psdsType Type of PSDS data.
+     * @param psdsData GNSS PSDS data. Framework must not parse the data since the data format is
+     *                 opaque to framework.
+     *
+     * @return True if the operation is successful.
+     */
+    boolean injectPsdsData(in PsdsType psdsType, in byte[] psdsData);
+
+    /**
+     * Opens the PSDS interface and provides the callback routines to the implementation of this
+     * interface.
+     *
+     * @param callback Handle to the IGnssPsdsCallback interface.
+     *
+     * @return True if the operation is successful.
+     */
+    boolean setCallback(in IGnssPsdsCallback callback);
+}
\ No newline at end of file
diff --git a/gnss/aidl/android/hardware/gnss/IGnssPsdsCallback.aidl b/gnss/aidl/android/hardware/gnss/IGnssPsdsCallback.aidl
new file mode 100644
index 0000000..72b693b
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IGnssPsdsCallback.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.hardware.gnss;
+
+import android.hardware.gnss.PsdsType;
+
+/**
+ * This interface is used by the GNSS HAL to request download data from Predicted Satellite Data
+ * Service (PSDS).
+ */
+@VintfStability
+interface IGnssPsdsCallback {
+
+    /**
+     * Callback to request the client to download PSDS data from one of the URLs defined in the
+     * framework specified by psdsType. The URLs must be specified via properties on the vendor
+     * partitions. E.g., LONGTERM_PSDS_SERVER_1, NORMAL_PSDS_SERVER, or REALTIME_PSDS_SERVER. The
+     * client must download PSDS data and inject it by calling injectPsdsData().
+     *
+     * @param psdsType Type of PSDS data.
+     */
+    void downloadRequestCb(in PsdsType psdsType);
+}
\ No newline at end of file
diff --git a/gnss/aidl/android/hardware/gnss/PsdsType.aidl b/gnss/aidl/android/hardware/gnss/PsdsType.aidl
new file mode 100644
index 0000000..d4fec77
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/PsdsType.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.hardware.gnss;
+
+/** The type of PSDS data. */
+@VintfStability
+@Backing(type="int")
+enum PsdsType {
+
+    /**
+     * Long-Term type PSDS data, which lasts for many hours to several days and often provides
+     * satellite orbit and clock accuracy of 2 - 20 meters.
+     */
+    LONG_TERM = 1,
+
+    /**
+     * Normal type PSDS data, which is similar to broadcast ephemeris in longevity - lasting for
+     * hours and providings satellite orbit and clock accuracy of 1 - 2 meters.
+     */
+    NORMAL = 2,
+
+    /**
+     * Real-Time type PSDS data, which lasts for minutes and provides brief satellite status
+     * information such as temporary malfunction, but does not include satellite orbit or clock
+     * information.
+     */
+    REALTIME = 3,
+}
diff --git a/gnss/aidl/default/Android.bp b/gnss/aidl/default/Android.bp
new file mode 100644
index 0000000..8c4ee40
--- /dev/null
+++ b/gnss/aidl/default/Android.bp
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+cc_binary {
+    name: "android.hardware.gnss-service.example",
+    relative_install_path: "hw",
+    init_rc: ["gnss-default.rc"],
+    vintf_fragments: ["gnss-default.xml"],
+    vendor: true,
+    cflags: [
+        "-Wall",
+        "-Wextra",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "liblog",
+        "android.hardware.gnss-ndk_platform",
+    ],
+    srcs: [
+        "Gnss.cpp",
+        "GnssPsds.cpp",
+        "service.cpp",
+    ],
+}
diff --git a/gnss/aidl/default/Gnss.cpp b/gnss/aidl/default/Gnss.cpp
new file mode 100644
index 0000000..2a35924
--- /dev/null
+++ b/gnss/aidl/default/Gnss.cpp
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2020 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 "GnssAidl"
+
+#include "Gnss.h"
+#include <log/log.h>
+#include "GnssPsds.h"
+
+namespace aidl::android::hardware::gnss {
+
+ndk::ScopedAStatus Gnss::getExtensionPsds(std::shared_ptr<IGnssPsds>* iGnssPsds) {
+    ALOGD("Gnss::getExtensionPsds");
+    *iGnssPsds = SharedRefBase::make<GnssPsds>();
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/Gnss.h b/gnss/aidl/default/Gnss.h
new file mode 100644
index 0000000..9864e9d
--- /dev/null
+++ b/gnss/aidl/default/Gnss.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/BnGnss.h>
+#include <aidl/android/hardware/gnss/BnGnssPsds.h>
+
+namespace aidl::android::hardware::gnss {
+
+class Gnss : public BnGnss {
+    ndk::ScopedAStatus getExtensionPsds(std::shared_ptr<IGnssPsds>* iGnssPsds) override;
+};
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/GnssPsds.cpp b/gnss/aidl/default/GnssPsds.cpp
new file mode 100644
index 0000000..c354217
--- /dev/null
+++ b/gnss/aidl/default/GnssPsds.cpp
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2020 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 "GnssPsdsAidl"
+
+#include "GnssPsds.h"
+
+#include <log/log.h>
+
+namespace aidl::android::hardware::gnss {
+
+std::shared_ptr<IGnssPsdsCallback> GnssPsds::sCallback = nullptr;
+
+ndk::ScopedAStatus GnssPsds::setCallback(const std::shared_ptr<IGnssPsdsCallback>& callback,
+                                         bool* success) {
+    ALOGD("setCallback");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+    *success = true;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus GnssPsds::injectPsdsData(PsdsType psdsType, const std::vector<uint8_t>& psdsData,
+                                            bool* success) {
+    ALOGD("injectPsdsData. psdsType: %d, psdsData: %d bytes", static_cast<int>(psdsType),
+          static_cast<int>(psdsData.size()));
+    *success = (psdsData.size() > 0);
+    return ndk::ScopedAStatus::ok();
+}
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/GnssPsds.h b/gnss/aidl/default/GnssPsds.h
new file mode 100644
index 0000000..fc65bc1
--- /dev/null
+++ b/gnss/aidl/default/GnssPsds.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/BnGnssPsds.h>
+
+namespace aidl::android::hardware::gnss {
+
+struct GnssPsds : public BnGnssPsds {
+  public:
+    ndk::ScopedAStatus setCallback(const std::shared_ptr<IGnssPsdsCallback>& callback,
+                                   bool* success) override;
+    ndk::ScopedAStatus injectPsdsData(PsdsType psdsType, const std::vector<uint8_t>& psdsData,
+                                      bool* success) override;
+
+  private:
+    // Guarded by mMutex
+    static std::shared_ptr<IGnssPsdsCallback> sCallback;
+
+    // Synchronization lock for sCallback
+    mutable std::mutex mMutex;
+};
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/gnss-default.rc b/gnss/aidl/default/gnss-default.rc
new file mode 100644
index 0000000..fe179c3
--- /dev/null
+++ b/gnss/aidl/default/gnss-default.rc
@@ -0,0 +1,4 @@
+service vendor.gnss-default /vendor/bin/hw/android.hardware.gnss-service.example
+    class hal
+    user nobody
+    group nobody
diff --git a/gnss/aidl/default/gnss-default.xml b/gnss/aidl/default/gnss-default.xml
new file mode 100644
index 0000000..2b06cd2
--- /dev/null
+++ b/gnss/aidl/default/gnss-default.xml
@@ -0,0 +1,9 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.gnss</name>
+        <interface>
+            <name>IGnss</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/gnss/aidl/default/service.cpp b/gnss/aidl/default/service.cpp
new file mode 100644
index 0000000..c79a271
--- /dev/null
+++ b/gnss/aidl/default/service.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020, 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 "Gnss.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+using aidl::android::hardware::gnss::Gnss;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    std::shared_ptr<Gnss> vib = ndk::SharedRefBase::make<Gnss>();
+
+    const std::string instance = std::string() + Gnss::descriptor + "/default";
+    binder_status_t status = AServiceManager_addService(vib->asBinder().get(), instance.c_str());
+    CHECK(status == STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}
diff --git a/gnss/aidl/vts/Android.bp b/gnss/aidl/vts/Android.bp
new file mode 100644
index 0000000..e57b421
--- /dev/null
+++ b/gnss/aidl/vts/Android.bp
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 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.
+
+cc_test {
+    name: "VtsHalGnssTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: ["VtsHalGnssTargetTest.cpp"],
+    shared_libs: [
+        "libbinder",
+    ],
+    static_libs: [
+        "android.hardware.gnss-cpp",
+    ],
+    test_suites: [
+        "vts",
+    ],
+}
diff --git a/gnss/aidl/vts/VtsHalGnssTargetTest.cpp b/gnss/aidl/vts/VtsHalGnssTargetTest.cpp
new file mode 100644
index 0000000..e7ffc05
--- /dev/null
+++ b/gnss/aidl/vts/VtsHalGnssTargetTest.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2020 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 <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+
+#include <android/hardware/gnss/IGnss.h>
+#include <android/hardware/gnss/IGnssPsds.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+
+using android::ProcessState;
+using android::sp;
+using android::String16;
+using android::binder::Status;
+using android::hardware::gnss::IGnss;
+using android::hardware::gnss::IGnssPsds;
+using android::hardware::gnss::PsdsType;
+
+class GnssAidlHalTest : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        gnss_hal_ = android::waitForDeclaredService<IGnss>(String16(GetParam().c_str()));
+        ASSERT_NE(gnss_hal_, nullptr);
+    }
+
+    sp<IGnss> gnss_hal_;
+};
+
+/*
+ * SetupTeardownCreateCleanup:
+ * Requests the gnss HAL then calls cleanup
+ *
+ * Empty test fixture to verify basic Setup & Teardown
+ */
+TEST_P(GnssAidlHalTest, SetupTeardownCreateCleanup) {}
+
+/*
+ * TestPsdsExtension:
+ * 1. Gets the PsdsExtension and verifies that it returns a non-null extension.
+ * 2. Injects empty PSDS data and verifies that it returns false.
+ */
+TEST_P(GnssAidlHalTest, TestPsdsExtension) {
+    sp<IGnssPsds> iGnssPsds;
+    auto status = gnss_hal_->getExtensionPsds(&iGnssPsds);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iGnssPsds != nullptr);
+
+    bool success;
+    status = iGnssPsds->injectPsdsData(PsdsType::LONG_TERM, std::vector<uint8_t>(), &success);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_FALSE(success);
+}
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(GnssAidlHalTest);
+INSTANTIATE_TEST_SUITE_P(, GnssAidlHalTest,
+                         testing::ValuesIn(android::getAidlHalInstanceNames(IGnss::descriptor)),
+                         android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ProcessState::self()->setThreadPoolMaxThreadCount(1);
+    ProcessState::self()->startThreadPool();
+    return RUN_ALL_TESTS();
+}
\ No newline at end of file