diff --git a/hsbp-manager/include/utils.hpp b/hsbp-manager/include/utils.hpp
new file mode 100644
index 0000000..eec2cd6
--- /dev/null
+++ b/hsbp-manager/include/utils.hpp
@@ -0,0 +1,77 @@
+/*
+// Copyright (c) 2019 Intel Corporation
+//
+// 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 <cstdint>
+#include <string>
+#include <variant>
+#include <vector>
+
+using GetSubTreeType = std::vector<
+    std::pair<std::string,
+              std::vector<std::pair<std::string, std::vector<std::string>>>>>;
+using BasicVariantType =
+    std::variant<std::vector<std::string>, std::string, int64_t, uint64_t,
+                 double, int32_t, uint32_t, int16_t, uint16_t, uint8_t, bool>;
+
+namespace mapper
+{
+constexpr const char* busName = "xyz.openbmc_project.ObjectMapper";
+constexpr const char* path = "/xyz/openbmc_project/object_mapper";
+constexpr const char* interface = "xyz.openbmc_project.ObjectMapper";
+constexpr const char* subtree = "GetSubTree";
+} // namespace mapper
+
+namespace entityManager
+{
+constexpr const char* busName = "xyz.openbmc_project.EntityManager";
+} // namespace entityManager
+
+namespace inventory
+{
+constexpr const char* interface = "xyz.openbmc_project.Inventory.Item";
+} // namespace inventory
+
+namespace hsbp
+{
+enum class registers : uint8_t
+{
+    fpgaIdH = 0x0,
+    fpgaIdL = 0x1,
+    typeId = 0x2,
+    bootVer = 0x3,
+    fpgaVer = 0x4,
+    securityRev = 0x5,
+    funSupported = 0x6,
+    numDisks = 0x7,
+    presence = 0x8,
+    ssdIFDET = 0x9,
+    ifdetPart = 0xA,
+    statusLocate = 0xB,
+    statusFail = 0xC,
+    statusRebuild = 0xD,
+    ledOverride = 0xE,
+    ledStatus = 0xF,
+    ledPattern0 = 0x10,
+    ledPattern1 = 0x11,
+    ledPattern2 = 0x12,
+    ledPattern3 = 0x13,
+    ledPattern4 = 0x14,
+    ledPattern5 = 0x15,
+    ledPattern6 = 0x16,
+    ledPattern7 = 0x17,
+};
+
+} // namespace hsbp