diff --git a/include/sdrutils.hpp b/include/sdrutils.hpp
index 8969bd6..206f6af 100644
--- a/include/sdrutils.hpp
+++ b/include/sdrutils.hpp
@@ -14,12 +14,20 @@
 // limitations under the License.
 */
 
+#include "commandutils.hpp"
+
 #include <boost/algorithm/string.hpp>
 #include <boost/bimap.hpp>
 #include <boost/container/flat_map.hpp>
+#include <cstdio>
 #include <cstring>
+#include <exception>
+#include <filesystem>
+#include <map>
 #include <phosphor-logging/log.hpp>
 #include <sdbusplus/bus/match.hpp>
+#include <string>
+#include <vector>
 
 #pragma once
 
@@ -249,3 +257,230 @@
         return std::string();
     }
 }
+
+namespace ipmi
+{
+
+static inline std::map<std::string, std::vector<std::string>>
+    getObjectInterfaces(const char* path)
+{
+    std::map<std::string, std::vector<std::string>> interfacesResponse;
+    std::vector<std::string> interfaces;
+    std::shared_ptr<sdbusplus::asio::connection> dbus = getSdBus();
+
+    sdbusplus::message::message getObjectMessage =
+        dbus->new_method_call("xyz.openbmc_project.ObjectMapper",
+                              "/xyz/openbmc_project/object_mapper",
+                              "xyz.openbmc_project.ObjectMapper", "GetObject");
+    getObjectMessage.append(path, interfaces);
+
+    try
+    {
+        sdbusplus::message::message response = dbus->call(getObjectMessage);
+        response.read(interfacesResponse);
+    }
+    catch (const std::exception& e)
+    {
+        phosphor::logging::log<phosphor::logging::level::ERR>(
+            "Failed to GetObject", phosphor::logging::entry("PATH=%s", path),
+            phosphor::logging::entry("WHAT=%s", e.what()));
+    }
+
+    return interfacesResponse;
+}
+
+static inline std::map<std::string, DbusVariant>
+    getEntityManagerProperties(const char* path, const char* interface)
+{
+    std::map<std::string, DbusVariant> properties;
+    std::shared_ptr<sdbusplus::asio::connection> dbus = getSdBus();
+
+    sdbusplus::message::message getProperties =
+        dbus->new_method_call("xyz.openbmc_project.EntityManager", path,
+                              "org.freedesktop.DBus.Properties", "GetAll");
+    getProperties.append(interface);
+
+    try
+    {
+        sdbusplus::message::message response = dbus->call(getProperties);
+        response.read(properties);
+    }
+    catch (const std::exception& e)
+    {
+        phosphor::logging::log<phosphor::logging::level::ERR>(
+            "Failed to GetAll", phosphor::logging::entry("PATH=%s", path),
+            phosphor::logging::entry("INTF=%s", interface),
+            phosphor::logging::entry("WHAT=%s", e.what()));
+    }
+
+    return properties;
+}
+
+static inline const std::string* getSensorConfigurationInterface(
+    const std::map<std::string, std::vector<std::string>>&
+        sensorInterfacesResponse)
+{
+    auto entityManagerService =
+        sensorInterfacesResponse.find("xyz.openbmc_project.EntityManager");
+    if (entityManagerService == sensorInterfacesResponse.end())
+    {
+        return nullptr;
+    }
+
+    // Find the fan configuration first (fans can have multiple configuration
+    // interfaces).
+    for (const auto& entry : entityManagerService->second)
+    {
+        if (entry == "xyz.openbmc_project.Configuration.AspeedFan" ||
+            entry == "xyz.openbmc_project.Configuration.I2CFan" ||
+            entry == "xyz.openbmc_project.Configuration.NuvotonFan")
+        {
+            return &entry;
+        }
+    }
+
+    for (const auto& entry : entityManagerService->second)
+    {
+        if (boost::algorithm::starts_with(entry,
+                                          "xyz.openbmc_project.Configuration."))
+        {
+            return &entry;
+        }
+    }
+
+    return nullptr;
+}
+
+// Follow Association properties for Sensor back to the Board dbus object to
+// check for an EntityId and EntityInstance property.
+static inline void updateIpmiFromAssociation(const std::string& path,
+                                             const SensorMap& sensorMap,
+                                             uint8_t& entityId,
+                                             uint8_t& entityInstance)
+{
+    namespace fs = std::filesystem;
+
+    auto sensorAssociationObject =
+        sensorMap.find("xyz.openbmc_project.Association.Definitions");
+    if (sensorAssociationObject == sensorMap.end())
+    {
+        if constexpr (debug)
+        {
+            std::fprintf(stderr, "path=%s, no association interface found\n",
+                         path.c_str());
+        }
+
+        return;
+    }
+
+    auto associationObject =
+        sensorAssociationObject->second.find("Associations");
+    if (associationObject == sensorAssociationObject->second.end())
+    {
+        if constexpr (debug)
+        {
+            std::fprintf(stderr, "path=%s, no association records found\n",
+                         path.c_str());
+        }
+
+        return;
+    }
+
+    std::vector<Association> associationValues =
+        std::get<std::vector<Association>>(associationObject->second);
+
+    // loop through the Associations looking for the right one:
+    for (const auto& entry : associationValues)
+    {
+        // forward, reverse, endpoint
+        const std::string& forward = std::get<0>(entry);
+        const std::string& reverse = std::get<1>(entry);
+        const std::string& endpoint = std::get<2>(entry);
+
+        // We only currently concern ourselves with chassis+all_sensors.
+        if (!(forward == "chassis" && reverse == "all_sensors"))
+        {
+            continue;
+        }
+
+        // the endpoint is the board entry provided by
+        // Entity-Manager. so let's grab its properties if it has
+        // the right interface.
+
+        // just try grabbing the properties first.
+        std::map<std::string, DbusVariant> ipmiProperties =
+            getEntityManagerProperties(
+                endpoint.c_str(),
+                "xyz.openbmc_project.Inventory.Decorator.Ipmi");
+
+        auto entityIdProp = ipmiProperties.find("EntityId");
+        auto entityInstanceProp = ipmiProperties.find("EntityInstance");
+        if (entityIdProp != ipmiProperties.end())
+        {
+            entityId =
+                static_cast<uint8_t>(std::get<uint64_t>(entityIdProp->second));
+        }
+        if (entityInstanceProp != ipmiProperties.end())
+        {
+            entityInstance = static_cast<uint8_t>(
+                std::get<uint64_t>(entityInstanceProp->second));
+        }
+
+        // Now check the entity-manager entry for this sensor to see
+        // if it has its own value and use that instead.
+        //
+        // In theory, checking this first saves us from checking
+        // both, except in most use-cases identified, there won't be
+        // a per sensor override, so we need to always check both.
+        std::string sensorNameFromPath = fs::path(path).filename();
+
+        std::string sensorConfigPath = endpoint + "/" + sensorNameFromPath;
+
+        // Download the interfaces for the sensor from
+        // Entity-Manager to find the name of the configuration
+        // interface.
+        std::map<std::string, std::vector<std::string>>
+            sensorInterfacesResponse =
+                getObjectInterfaces(sensorConfigPath.c_str());
+
+        const std::string* configurationInterface =
+            getSensorConfigurationInterface(sensorInterfacesResponse);
+
+        // We didnt' find a configuration interface for this sensor, but we
+        // followed the Association property to get here, so we're done
+        // searching.
+        if (!configurationInterface)
+        {
+            break;
+        }
+
+        // We found a configuration interface.
+        std::map<std::string, DbusVariant> configurationProperties =
+            getEntityManagerProperties(sensorConfigPath.c_str(),
+                                       configurationInterface->c_str());
+
+        entityIdProp = configurationProperties.find("EntityId");
+        entityInstanceProp = configurationProperties.find("EntityInstance");
+        if (entityIdProp != configurationProperties.end())
+        {
+            entityId =
+                static_cast<uint8_t>(std::get<uint64_t>(entityIdProp->second));
+        }
+        if (entityInstanceProp != configurationProperties.end())
+        {
+            entityInstance = static_cast<uint8_t>(
+                std::get<uint64_t>(entityInstanceProp->second));
+        }
+
+        // stop searching Association records.
+        break;
+    } // end for Association vectors.
+
+    if constexpr (debug)
+    {
+        std::fprintf(stderr, "path=%s, entityId=%d, entityInstance=%d\n",
+                     path.c_str(), entityId, entityInstance);
+    }
+}
+
+} // namespace ipmi