diff --git a/src/smbioshandler.cpp b/src/smbioshandler.cpp
new file mode 100644
index 0000000..7510493
--- /dev/null
+++ b/src/smbioshandler.cpp
@@ -0,0 +1,501 @@
+/*
+// Copyright (c) 2018 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 <ipmid/api.h>
+
+#include <commandutils.hpp>
+#include <cstdint>
+#include <iostream>
+#include <ipmid/utils.hpp>
+#include <phosphor-logging/elog-errors.hpp>
+#include <phosphor-logging/log.hpp>
+#include <sdbusplus/bus.hpp>
+#include <smbioshandler.hpp>
+#include <string>
+#include <vector>
+#include <xyz/openbmc_project/Common/error.hpp>
+
+using InternalFailure =
+    sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
+
+using level = phosphor::logging::level;
+
+constexpr const char* DBUS_PROPERTIES = "org.freedesktop.DBus.Properties";
+constexpr const char* MDRV1_PATH = "/xyz/openbmc_project/Smbios/MDR_V1";
+constexpr const char* MDRV1_INTERFACE = "xyz.openbmc_project.Smbios.MDR_V1";
+
+static void register_netfn_smbios_functions() __attribute__((constructor));
+static sdbusplus::bus::bus bus(ipmid_get_sd_bus_connection());
+
+ipmi_ret_t cmd_region_status(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                             ipmi_request_t request, ipmi_response_t response,
+                             ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    auto requestData = reinterpret_cast<const RegionStatusRequest*>(request);
+    std::vector<uint8_t> status;
+
+    if (*data_len != sizeof(RegionStatusRequest))
+    {
+        *data_len = 0;
+        return IPMI_CC_REQ_DATA_LEN_INVALID;
+    }
+
+    uint8_t regionId = requestData->regionId - 1;
+    *data_len = 0;
+
+    if (regionId >= maxMDRId)
+    {
+        phosphor::logging::log<level::ERR>("Invalid region");
+        return IPMI_CC_PARM_OUT_OF_RANGE;
+    }
+
+    std::string service = ipmi::getService(bus, MDRV1_INTERFACE, MDRV1_PATH);
+
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      MDRV1_INTERFACE, "RegionStatus");
+    method.append(regionId);
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error get region status",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", MDRV1_PATH));
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    reply.read(status);
+
+    if (status.size() != sizeof(MDRState))
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error get region status, return length invalid");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    *data_len = static_cast<size_t>(status.size());
+    auto dataOut = reinterpret_cast<uint8_t*>(response);
+    std::copy(&status[0], &status[*data_len], dataOut);
+    return IPMI_CC_OK;
+}
+
+int sdplus_mdrv1_get_property(
+    const std::string& name,
+    sdbusplus::message::variant<uint8_t, uint16_t>& value, std::string& service)
+{
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      DBUS_PROPERTIES, "Get");
+    method.append(MDRV1_INTERFACE, name);
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error getting property, sdbusplus call failed");
+        return -1;
+    }
+    reply.read(value);
+
+    return 0;
+}
+
+static int set_regionId(uint8_t regionId, std::string& service)
+{
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      DBUS_PROPERTIES, "Set");
+    sdbusplus::message::variant<uint8_t> value{regionId};
+    method.append(MDRV1_INTERFACE, "RegionId", value);
+    auto region = bus.call(method);
+    if (region.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error setting regionID, sdbusplus call failed");
+        return -1;
+    }
+    return 0;
+}
+
+ipmi_ret_t cmd_region_complete(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                               ipmi_request_t request, ipmi_response_t response,
+                               ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    auto requestData = reinterpret_cast<const RegionCompleteRequest*>(request);
+    uint8_t status;
+
+    sdbusplus::message::variant<uint8_t, uint16_t> value;
+
+    if (*data_len != sizeof(RegionCompleteRequest))
+    {
+        *data_len = 0;
+        return IPMI_CC_REQ_DATA_LEN_INVALID;
+    }
+
+    uint8_t regionId = requestData->regionId - 1;
+    *data_len = 0;
+
+    if (regionId >= maxMDRId)
+    {
+        phosphor::logging::log<level::ERR>("Invalid region");
+        return IPMI_CC_PARM_OUT_OF_RANGE;
+    }
+
+    std::string service = ipmi::getService(bus, MDRV1_INTERFACE, MDRV1_PATH);
+
+    if (set_regionId(regionId, service) < 0)
+    {
+        phosphor::logging::log<level::ERR>("Error setting regionId");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+
+    if (0 > sdplus_mdrv1_get_property("LockPolicy", value, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting lockPolicy");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (regionLockUnlocked ==
+        sdbusplus::message::variant_ns::get<uint8_t>(value))
+    {
+        return IPMI_CC_PARAMETER_NOT_SUPPORT_IN_PRESENT_STATE;
+    }
+
+    if (0 > sdplus_mdrv1_get_property("SessionId", value, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting sessionId");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (requestData->sessionId !=
+        sdbusplus::message::variant_ns::get<uint8_t>(value))
+    {
+        return IPMI_CC_OEM_SET_IN_PROCESS;
+    }
+
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      MDRV1_INTERFACE, "RegionComplete");
+
+    method.append(regionId);
+
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error set region complete",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", MDRV1_PATH));
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    reply.read(status);
+
+    if (status != 0)
+        phosphor::logging::log<level::ERR>(
+            "Error set region complete, unexpected error");
+    return IPMI_CC_UNSPECIFIED_ERROR;
+
+    return IPMI_CC_OK;
+}
+
+ipmi_ret_t cmd_region_read(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                           ipmi_request_t request, ipmi_response_t response,
+                           ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    auto requestData = reinterpret_cast<const RegionReadRequest*>(request);
+    auto responseData = reinterpret_cast<RegionReadResponse*>(response);
+    sdbusplus::message::variant<uint8_t, uint16_t> regUsedVal;
+    sdbusplus::message::variant<uint8_t, uint16_t> lockPolicyVal;
+    std::vector<uint8_t> res;
+
+    if (*data_len < sizeof(RegionReadRequest))
+    {
+        *data_len = 0;
+        return IPMI_CC_REQ_DATA_LEN_INVALID;
+    }
+
+    uint8_t regionId = requestData->regionId - 1;
+
+    *data_len = 0;
+
+    if (regionId >= maxMDRId)
+    {
+        phosphor::logging::log<level::ERR>("Invalid region");
+        return IPMI_CC_PARM_OUT_OF_RANGE;
+    }
+
+    std::string service = ipmi::getService(bus, MDRV1_INTERFACE, MDRV1_PATH);
+    // TODO to make sure the interface can get correct LockPolicy even
+    // regionId changed by another task.
+    if (set_regionId(regionId, service) < 0)
+    {
+        phosphor::logging::log<level::ERR>("Error setting regionId");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (0 > sdplus_mdrv1_get_property("RegionUsed", regUsedVal, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting regionUsed");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (requestData->offset + requestData->length >
+        sdbusplus::message::variant_ns::get<uint16_t>(regUsedVal))
+    {
+        return IPMI_CC_REQ_DATA_LEN_INVALID;
+    }
+
+    if (0 > sdplus_mdrv1_get_property("LockPolicy", lockPolicyVal, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting lockPolicy");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (regionLockUnlocked !=
+        sdbusplus::message::variant_ns::get<uint8_t>(lockPolicyVal))
+    {
+        return IPMI_CC_PARAMETER_NOT_SUPPORT_IN_PRESENT_STATE;
+    }
+
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      MDRV1_INTERFACE, "RegionRead");
+
+    method.append(regionId, requestData->length, requestData->offset);
+
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error read region data",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", MDRV1_PATH));
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    reply.read(res);
+
+    *data_len = responseData->length = res[0];
+    responseData->updateCount = res[1];
+
+    if ((*data_len == 0) || (*data_len >= 254))
+    {
+        phosphor::logging::log<level::ERR>(
+            "Data length send from service is invalid");
+        *data_len = 0;
+        return IPMI_CC_RESPONSE_ERROR;
+    }
+
+    *data_len += 2 * sizeof(uint8_t);
+    std::copy(&res[2], &res[*data_len], responseData->data);
+    return IPMI_CC_OK;
+}
+
+ipmi_ret_t cmd_region_write(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                            ipmi_request_t request, ipmi_response_t response,
+                            ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    auto requestData = reinterpret_cast<const RegionWriteRequest*>(request);
+    uint8_t regionId = requestData->regionId - 1;
+    std::string res;
+    std::vector<uint8_t> writeData;
+    uint16_t index;
+    uint8_t tmp[255];
+
+    size_t minInputLen = &requestData->data[0] - &requestData->sessionId + 1;
+    if (*data_len < minInputLen)
+    { // this command need at least 6 bytes input
+        *data_len = 0;
+        return IPMI_CC_REQ_DATA_LEN_INVALID;
+    }
+
+    sdbusplus::message::variant<uint8_t, uint16_t> value;
+
+    *data_len = 0;
+
+    if (regionId >= maxMDRId)
+    {
+        phosphor::logging::log<level::ERR>("Invalid region");
+        return IPMI_CC_PARM_OUT_OF_RANGE;
+    }
+
+    std::string service = ipmi::getService(bus, MDRV1_INTERFACE, MDRV1_PATH);
+
+    if (set_regionId(regionId, service) < 0)
+    {
+        phosphor::logging::log<level::ERR>("Error setting regionId");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+
+    if (0 > sdplus_mdrv1_get_property("LockPolicy", value, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting lockPolicy");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (regionLockUnlocked ==
+        sdbusplus::message::variant_ns::get<uint8_t>(value))
+    {
+        return IPMI_CC_PARAMETER_NOT_SUPPORT_IN_PRESENT_STATE;
+    }
+
+    if (0 > sdplus_mdrv1_get_property("SessionId", value, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting sessionId");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (requestData->sessionId !=
+        sdbusplus::message::variant_ns::get<uint8_t>(value))
+    {
+        return IPMI_CC_OEM_SET_IN_PROCESS;
+    }
+
+    std::copy(&(requestData->length), &(requestData->data[requestData->length]),
+              tmp);
+    writeData.push_back(regionId);
+    for (index = 0; index < minInputLen + requestData->length - 2; index++)
+    {
+        writeData.push_back(tmp[index]);
+    }
+
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      MDRV1_INTERFACE, "RegionWrite");
+
+    method.append(writeData);
+
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error write region data",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", MDRV1_PATH));
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    reply.read(res);
+
+    if (res == "NoData")
+    {
+        return IPMI_CC_PARM_OUT_OF_RANGE;
+    }
+    else if (res != "Success")
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error write region data, unexpected error");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+
+    return IPMI_CC_OK;
+}
+
+ipmi_ret_t cmd_region_lock(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                           ipmi_request_t request, ipmi_response_t response,
+                           ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    auto requestData = reinterpret_cast<const RegionLockRequest*>(request);
+    uint8_t regionId = requestData->regionId - 1;
+    sdbusplus::message::variant<uint8_t, uint16_t> value;
+    auto res = reinterpret_cast<uint8_t*>(response);
+    uint8_t lockResponse;
+
+    if (*data_len != sizeof(RegionLockRequest))
+    {
+        *data_len = 0;
+        return IPMI_CC_REQ_DATA_LEN_INVALID;
+    }
+
+    *data_len = 0;
+
+    if (regionId >= maxMDRId)
+    {
+        phosphor::logging::log<level::ERR>("Invalid region");
+        return IPMI_CC_PARM_OUT_OF_RANGE;
+    }
+
+    std::string service = ipmi::getService(bus, MDRV1_INTERFACE, MDRV1_PATH);
+
+    if (set_regionId(regionId, service) < 0)
+    {
+        phosphor::logging::log<level::ERR>("Error setting regionId");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+
+    if (0 > sdplus_mdrv1_get_property("LockPolicy", value, service))
+    {
+        phosphor::logging::log<level::ERR>("Error getting lockPolicy");
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    if (requestData->lockPolicy == regionLockUnlocked)
+    {
+        if (regionLockUnlocked ==
+            sdbusplus::message::variant_ns::get<uint8_t>(value))
+        {
+            return IPMI_CC_PARAMETER_NOT_SUPPORT_IN_PRESENT_STATE;
+        }
+    }
+    if (regionLockUnlocked !=
+        sdbusplus::message::variant_ns::get<uint8_t>(value))
+    {
+        if (0 > sdplus_mdrv1_get_property("SessionId", value, service))
+        {
+            phosphor::logging::log<level::ERR>("Error getting sessionId");
+            return IPMI_CC_UNSPECIFIED_ERROR;
+        }
+        if (requestData->sessionId !=
+            sdbusplus::message::variant_ns::get<uint8_t>(value))
+        {
+            if (requestData->lockPolicy != regionLockStrict)
+            {
+                return IPMI_CC_OEM_SET_IN_PROCESS;
+            }
+        }
+    }
+    auto method = bus.new_method_call(service.c_str(), MDRV1_PATH,
+                                      MDRV1_INTERFACE, "RegionLock");
+
+    method.append(requestData->sessionId, regionId, requestData->lockPolicy,
+                  requestData->msTimeout);
+
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        phosphor::logging::log<level::ERR>(
+            "Error lock region ",
+            phosphor::logging::entry("SERVICE=%s", service.c_str()),
+            phosphor::logging::entry("PATH=%s", MDRV1_PATH));
+        return IPMI_CC_UNSPECIFIED_ERROR;
+    }
+    reply.read(lockResponse);
+
+    *data_len = sizeof(lockResponse);
+    *res = lockResponse;
+    return IPMI_CC_OK;
+}
+
+static void register_netfn_smbios_functions(void)
+{
+    // MDR V1 Command
+    // <Get MDR Status Command>
+    ipmi_register_callback(NETFUN_INTEL_APP_OEM,
+                           IPMI_NETFN_INTEL_OEM_APP_CMD::MDR_STATUS, NULL,
+                           cmd_region_status, PRIVILEGE_OPERATOR);
+
+    // <Update Complete Status Command>
+    ipmi_register_callback(NETFUN_INTEL_APP_OEM,
+                           IPMI_NETFN_INTEL_OEM_APP_CMD::MDR_COMPLETE, NULL,
+                           cmd_region_complete, PRIVILEGE_OPERATOR);
+
+    // <Read MDR Command>
+    ipmi_register_callback(NETFUN_INTEL_APP_OEM,
+                           IPMI_NETFN_INTEL_OEM_APP_CMD::MDR_READ, NULL,
+                           cmd_region_read, PRIVILEGE_OPERATOR);
+
+    // <Write MDR Command>
+    ipmi_register_callback(NETFUN_INTEL_APP_OEM,
+                           IPMI_NETFN_INTEL_OEM_APP_CMD::MDR_WRITE, NULL,
+                           cmd_region_write, PRIVILEGE_OPERATOR);
+
+    // <Lock MDR Command>
+    ipmi_register_callback(NETFUN_INTEL_APP_OEM,
+                           IPMI_NETFN_INTEL_OEM_APP_CMD::MDR_LOCK, NULL,
+                           cmd_region_lock, PRIVILEGE_OPERATOR);
+}