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_