diff --git a/oem/ibm/libpldmresponder/utils.cpp b/oem/ibm/libpldmresponder/utils.cpp
index 88fe1b9..59d418c 100644
--- a/oem/ibm/libpldmresponder/utils.cpp
+++ b/oem/ibm/libpldmresponder/utils.cpp
@@ -3,6 +3,7 @@
 #include "common/utils.hpp"
 
 #include <libpldm/base.h>
+#include <libpldm/platform.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <sys/un.h>
@@ -197,6 +198,80 @@
 
     return portObjects;
 }
+
 } // namespace utils
+
+namespace oem_ibm_utils
+{
+using namespace pldm::utils;
+
+int pldm::responder::oem_ibm_utils::Handler::setCoreCount(
+    const EntityAssociations& Associations, const EntityMaps entityMaps)
+{
+    int coreCountRef = 0;
+    // get the CPU pldm entities
+    for (const auto& entries : Associations)
+    {
+        auto parent = pldm_entity_extract(entries[0]);
+        // entries[0] would be the parent in the entity association map
+        if (parent.entity_type == PLDM_ENTITY_PROC)
+        {
+            int& coreCount = coreCountRef;
+            for (const auto& entry : entries)
+            {
+                auto child = pldm_entity_extract(entry);
+                if (child.entity_type == (PLDM_ENTITY_PROC | 0x8000))
+                {
+                    // got a core child
+                    ++coreCount;
+                }
+            }
+            try
+            {
+                auto grand_parent = pldm_entity_get_parent(entries[0]);
+                std::string grepWord = std::format(
+                    "{}{}/{}{}", entityMaps.at(grand_parent.entity_type),
+                    std::to_string(grand_parent.entity_instance_num),
+                    entityMaps.at(parent.entity_type),
+                    std::to_string(parent.entity_instance_num));
+                static constexpr auto searchpath = "/xyz/openbmc_project/";
+                std::vector<std::string> cpuInterface = {
+                    "xyz.openbmc_project.Inventory.Item.Cpu"};
+                pldm::utils::GetSubTreeResponse response = dBusIntf->getSubtree(
+                    searchpath, 0 /* depth */, cpuInterface);
+                for (const auto& [objectPath, serviceMap] : response)
+                {
+                    // find the object path with first occurance of coreX
+                    if (objectPath.contains(grepWord))
+                    {
+                        pldm::utils::DBusMapping dbusMapping{
+                            objectPath, cpuInterface[0], "CoreCount",
+                            "uint16_t"};
+                        pldm::utils::PropertyValue value =
+                            static_cast<uint16_t>(coreCount);
+                        try
+                        {
+                            dBusIntf->setDbusProperty(dbusMapping, value);
+                        }
+                        catch (const std::exception& e)
+                        {
+                            error(
+                                "Failed to set the core count property at interface '{INTERFACE}': {ERROR}",
+                                "INTERFACE", cpuInterface[0], "ERROR", e);
+                        }
+                    }
+                }
+            }
+            catch (const std::exception& e)
+            {
+                error("Failed to searching CoreCount property: {ERROR}",
+                      "ERROR", e);
+            }
+        }
+    }
+    return coreCountRef;
+}
+
+} // namespace oem_ibm_utils
 } // namespace responder
 } // namespace pldm
diff --git a/oem/ibm/libpldmresponder/utils.hpp b/oem/ibm/libpldmresponder/utils.hpp
index bfdd251..4e849f5 100644
--- a/oem/ibm/libpldmresponder/utils.hpp
+++ b/oem/ibm/libpldmresponder/utils.hpp
@@ -1,5 +1,7 @@
 #pragma once
 
+#include "libpldmresponder/oem_handler.hpp"
+
 #include <cstdint>
 #include <string>
 #include <vector>
@@ -54,5 +56,33 @@
 std::vector<std::string> findPortObjects(const std::string& adapterObjPath);
 
 } // namespace utils
+
+namespace oem_ibm_utils
+{
+
+class Handler : public oem_utils::Handler
+{
+  public:
+    Handler(const pldm::utils::DBusHandler* dBusIntf) :
+        oem_utils::Handler(dBusIntf), dBusIntf(dBusIntf)
+    {}
+
+    /** @brief Collecting core count data and setting to Dbus properties
+     *
+     *  @param[in] associations - the data of entity association
+     *  @param[in] entityMaps - the mapping of entity to DBus string
+     *
+     */
+    virtual int
+        setCoreCount(const pldm::utils::EntityAssociations& associations,
+                     const pldm::utils::EntityMaps entityMaps);
+
+    virtual ~Handler() = default;
+
+  protected:
+    const pldm::utils::DBusHandler* dBusIntf;
+};
+
+} // namespace oem_ibm_utils
 } // namespace responder
 } // namespace pldm
diff --git a/oem/ibm/test/entitymap_test.json b/oem/ibm/test/entitymap_test.json
new file mode 100644
index 0000000..7dc08f2
--- /dev/null
+++ b/oem/ibm/test/entitymap_test.json
@@ -0,0 +1,19 @@
+{
+    "Description": {
+        "_comment": [
+            "This file serves as a crucial tool for testing JSON parsing capabilities, facilitating the population of the Entitymap by harnessing its data."
+        ]
+    },
+    "EntityTypeToDbusStringMap": {
+        "45": "chassis",
+        "60": "io_board",
+        "63": "system_management_module",
+        "64": "motherboard",
+        "67": "dcm",
+        "80": "io_module",
+        "135": "cpu",
+        "190": "socket",
+        "32813": "system",
+        "32903": "core"
+    }
+}
diff --git a/oem/ibm/test/libpldmresponder_oem_platform_test.cpp b/oem/ibm/test/libpldmresponder_oem_platform_test.cpp
index ea9b97a..21b6914 100644
--- a/oem/ibm/test/libpldmresponder_oem_platform_test.cpp
+++ b/oem/ibm/test/libpldmresponder_oem_platform_test.cpp
@@ -1,23 +1,40 @@
 #include "common/test/mocked_utils.hpp"
 #include "common/utils.hpp"
+#include "host-bmc/utils.hpp"
 #include "libpldmresponder/event_parser.hpp"
 #include "libpldmresponder/pdr.hpp"
 #include "libpldmresponder/pdr_utils.hpp"
 #include "libpldmresponder/platform.hpp"
 #include "oem/ibm/libpldmresponder/inband_code_update.hpp"
 #include "oem/ibm/libpldmresponder/oem_ibm_handler.hpp"
+#include "oem/ibm/libpldmresponder/utils.hpp"
 #include "test/test_instance_id.hpp"
 
 #include <libpldm/entity.h>
 #include <libpldm/oem/ibm/entity.h>
+#include <libpldm/pdr.h>
 
+#include <nlohmann/json.hpp>
+#include <phosphor-logging/lg2.hpp>
 #include <sdeventplus/event.hpp>
 
+#include <filesystem>
+#include <fstream>
+
 using namespace pldm::utils;
 using namespace pldm::responder;
 using namespace pldm::responder::pdr;
 using namespace pldm::responder::pdr_utils;
 using namespace pldm::responder::oem_ibm_platform;
+using ::testing::Return;
+
+class MockOemUtilsHandler : public oem_ibm_utils::Handler
+{
+  public:
+    MockOemUtilsHandler(const pldm::utils::DBusHandler* dBusIntf) :
+        oem_ibm_utils::Handler(dBusIntf)
+    {}
+};
 
 class MockCodeUpdate : public CodeUpdate
 {
@@ -409,3 +426,86 @@
     mockoemPlatformHandler->updateOemDbusPaths(dbuspath);
     EXPECT_EQ(dbuspath, "/inventory/system/chassis/motherboard/dcm0");
 }
+
+TEST(SetCoreCount, testgoodpath)
+{
+    pldm::utils::EntityMaps entityMaps = pldm::hostbmc::utils::parseEntityMap(
+        "../../oem/ibm/test/entitymap_test.json");
+    MockdBusHandler mockedDbusUtils;
+    pldm_entity entities[9]{};
+
+    entities[0].entity_type = 45;
+    entities[0].entity_container_id = 0;
+
+    entities[1].entity_type = 64;
+    entities[1].entity_container_id = 1;
+
+    entities[2].entity_type = 67;
+    entities[2].entity_container_id = 2;
+    entities[3].entity_type = 67;
+    entities[3].entity_container_id = 2;
+
+    entities[4].entity_type = 135;
+    entities[4].entity_container_id = 3;
+    entities[5].entity_type = 135;
+    entities[5].entity_container_id = 3;
+    entities[6].entity_type = 135;
+    entities[6].entity_container_id = 3;
+    entities[7].entity_type = 135;
+    entities[7].entity_container_id = 3;
+    entities[8].entity_type = 32903;
+    entities[8].entity_container_id = 3;
+
+    auto tree = pldm_entity_association_tree_init();
+
+    auto l1 = pldm_entity_association_tree_add_entity(
+        tree, &entities[0], 1, nullptr, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true,
+        true, 0xFFFF);
+
+    auto l2 = pldm_entity_association_tree_add_entity(
+        tree, &entities[1], 1, l1, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+
+    auto l3a = pldm_entity_association_tree_add_entity(
+        tree, &entities[2], 0, l2, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+    auto l3b = pldm_entity_association_tree_add_entity(
+        tree, &entities[3], 1, l2, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+
+    auto l4a = pldm_entity_association_tree_add_entity(
+        tree, &entities[4], 0, l3a, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+    auto l4b = pldm_entity_association_tree_add_entity(
+        tree, &entities[5], 1, l3a, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+
+    auto l5a = pldm_entity_association_tree_add_entity(
+        tree, &entities[6], 0, l3b, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+    auto l5b = pldm_entity_association_tree_add_entity(
+        tree, &entities[7], 1, l3b, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+
+    auto l5c = pldm_entity_association_tree_add_entity(
+        tree, &entities[8], 0, l5a, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+
+    auto l5ca = pldm_entity_association_tree_add_entity(
+        tree, &entities[8], 0, l5b, PLDM_ENTITY_ASSOCIAION_PHYSICAL, true, true,
+        0xFFFF);
+
+    pldm::utils::EntityAssociations entityAssociations = {
+        {l1, l2},        {l2, l3a, l3b}, {l3a, l4a, l4b},
+        {l3b, l5a, l5b}, {l5a, l5c},     {l5b, l5ca}};
+
+    DBusMapping dbusMapping{"/foo/bar", "xyz.openbmc_project.Foo.Bar",
+                            "propertyName", "uint64_t"};
+    std::vector<std::string> cpuInterface = {"xyz.openbmc_project.Foo.Bar"};
+    auto oemMockedUtils =
+        std::make_unique<MockOemUtilsHandler>(&mockedDbusUtils);
+    int coreCount = oemMockedUtils->setCoreCount(entityAssociations,
+                                                 entityMaps);
+    EXPECT_EQ(coreCount, 2);
+    pldm_entity_association_tree_destroy(tree);
+}