diff --git a/ipmi.hpp b/ipmi.hpp
new file mode 100644
index 0000000..0291949
--- /dev/null
+++ b/ipmi.hpp
@@ -0,0 +1,36 @@
+#pragma once
+
+#include "handler.hpp"
+
+#include <ipmid/api.h>
+
+namespace google
+{
+namespace ipmi
+{
+
+enum SysOEMCommands
+{
+    // The Sys cable check command.
+    SysCableCheck = 0,
+    // The Sys cpld version over ipmi command.
+    SysCpldVersion = 1,
+    // The Sys get eth device command.
+    SysGetEthDevice = 2,
+    // The Sys psu hard reset command.
+    SysPsuHardReset = 3,
+    // The Sys pcie slot count command.
+    SysPcieSlotCount = 4,
+    // The Sys pcie slot to i2c bus mapping command.
+    SysPcieSlotI2cBusMapping = 5,
+    // The Sys "entity id:entity instance" to entity name mapping command.
+    SysEntityName = 6,
+};
+
+// Handle the google-ipmi-sys IPMI OEM commands.
+ipmi_ret_t handleSysCommand(HandlerInterface* handler, ipmi_cmd_t cmd,
+                            const uint8_t* reqBuf, uint8_t* replyCmdBuf,
+                            size_t* dataLen);
+
+} // namespace ipmi
+} // namespace google