diff --git a/include/cpuinfo_utils.hpp b/include/cpuinfo_utils.hpp
new file mode 100644
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--- /dev/null
+++ b/include/cpuinfo_utils.hpp
@@ -0,0 +1,50 @@
+// Copyright (c) 2021 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.
+
+#pragma once
+
+#include <boost/asio/io_context.hpp>
+#include <sdbusplus/asio/connection.hpp>
+
+#define DEBUG_PRINT                                                            \
+    if constexpr (false)                                                       \
+    std::cerr
+
+namespace cpu_info
+{
+
+/** Host states which are of interest just to cpuinfo use cases. */
+enum class HostState
+{
+    /** Host CPU is powered off. */
+    off,
+    /** Host CPU is powered on, but BIOS has not completed POST. */
+    postInProgress,
+    /** BIOS has completed POST. */
+    postComplete
+};
+
+/** Current host state - initialized to "off" */
+extern HostState hostState;
+
+/**
+ * Register D-Bus match handlers to keep hostState current. The D-Bus logic is
+ * entirely asynchronous, so hostState will never change from "off" until after
+ * this function is called and the asio event loop is running.
+ *
+ * @param[in]   conn    D-Bus ASIO connection.
+ */
+void hostStateSetup(const std::shared_ptr<sdbusplus::asio::connection>& conn);
+
+} // namespace cpu_info