diff --git a/contexthub/common/default/1.X/Android.bp b/contexthub/common/default/1.X/Android.bp
new file mode 100644
index 0000000..691a1b7
--- /dev/null
+++ b/contexthub/common/default/1.X/Android.bp
@@ -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.
+
+cc_library_headers {
+    name: "android.hardware.contexthub@1.X-common-impl",
+    vendor_available: true,
+    defaults: ["hidl_defaults"],
+    export_include_dirs: ["."],
+    shared_libs: [
+        "android.hardware.contexthub@1.0",
+        "libbinder",
+        "libcutils",
+        "libhidlbase",
+        "libutils",
+    ],
+}
diff --git a/contexthub/common/default/1.X/ContextHub.h b/contexthub/common/default/1.X/ContextHub.h
new file mode 100644
index 0000000..73d0631
--- /dev/null
+++ b/contexthub/common/default/1.X/ContextHub.h
@@ -0,0 +1,117 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_HARDWARE_CONTEXTHUB_V1_X_CONTEXTHUB_H
+#define ANDROID_HARDWARE_CONTEXTHUB_V1_X_CONTEXTHUB_H
+
+#include <android/hardware/contexthub/1.0/IContexthub.h>
+#include <android/hardware/contexthub/1.0/types.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace contexthub {
+namespace V1_X {
+namespace implementation {
+
+template <class IContextHubInterface>
+struct ContextHub : public IContextHubInterface {
+    using ContextHubMsg = ::android::hardware::contexthub::V1_0::ContextHubMsg;
+    using HubAppInfo = ::android::hardware::contexthub::V1_0::HubAppInfo;
+    using IContexthubCallback = ::android::hardware::contexthub::V1_0::IContexthubCallback;
+    using NanoAppBinary = ::android::hardware::contexthub::V1_0::NanoAppBinary;
+    using Result = ::android::hardware::contexthub::V1_0::Result;
+    using getHubs_cb = ::android::hardware::contexthub::V1_0::IContexthub::getHubs_cb;
+
+  public:
+    Return<void> getHubs(getHubs_cb _hidl_cb) override {
+        ::android::hardware::contexthub::V1_0::ContextHub hub = {};
+        hub.name = "Mock Context Hub";
+        hub.vendor = "AOSP";
+        hub.toolchain = "n/a";
+        hub.platformVersion = 1;
+        hub.toolchainVersion = 1;
+        hub.hubId = kMockHubId;
+        hub.peakMips = 1;
+        hub.peakPowerDrawMw = 1;
+        hub.maxSupportedMsgLen = 4096;
+        hub.chrePlatformId = UINT64_C(0x476f6f6754000000);
+        hub.chreApiMajorVersion = 1;
+        hub.chreApiMinorVersion = 4;
+
+        // Report a single mock hub
+        std::vector<::android::hardware::contexthub::V1_0::ContextHub> hubs;
+        hubs.push_back(hub);
+
+        _hidl_cb(hubs);
+        return Void();
+    }
+
+    Return<Result> registerCallback(uint32_t hubId, const sp<IContexthubCallback>& cb) override {
+        if (hubId == kMockHubId) {
+            mCallback = cb;
+            return Result::OK;
+        }
+        return Result::BAD_PARAMS;
+    }
+
+    // We don't expose any nanoapps, therefore all nanoapp-related API calls return with BAD_PARAMS
+    Return<Result> sendMessageToHub(uint32_t /*hubId*/, const ContextHubMsg& /*msg*/) override {
+        return Result::BAD_PARAMS;
+    }
+
+    Return<Result> loadNanoApp(uint32_t /*hubId*/, const NanoAppBinary& /*appBinary*/,
+                               uint32_t /*transactionId*/) override {
+        return Result::BAD_PARAMS;
+    }
+
+    Return<Result> unloadNanoApp(uint32_t /*hubId*/, uint64_t /*appId*/,
+                                 uint32_t /*transactionId*/) override {
+        return Result::BAD_PARAMS;
+    }
+
+    Return<Result> enableNanoApp(uint32_t /*hubId*/, uint64_t /*appId*/,
+                                 uint32_t /*transactionId*/) override {
+        return Result::BAD_PARAMS;
+    }
+
+    Return<Result> disableNanoApp(uint32_t /*hubId*/, uint64_t /*appId*/,
+                                  uint32_t /*transactionId*/) override {
+        return Result::BAD_PARAMS;
+    }
+
+    Return<Result> queryApps(uint32_t hubId) override {
+        if (hubId == kMockHubId && mCallback != nullptr) {
+            std::vector<HubAppInfo> nanoapps;
+            mCallback->handleAppsInfo(nanoapps);
+            return Result::OK;
+        }
+        return Result::BAD_PARAMS;
+    }
+
+  private:
+    static constexpr uint32_t kMockHubId = 0;
+
+    sp<IContexthubCallback> mCallback;
+};
+
+}  // namespace implementation
+}  // namespace V1_X
+}  // namespace contexthub
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_CONTEXTHUB_V1_X_CONTEXTHUB_H