diff --git a/wistronoem.hpp b/wistronoem.hpp
new file mode 100644
index 0000000..e9edd13
--- /dev/null
+++ b/wistronoem.hpp
@@ -0,0 +1,30 @@
+#pragma once
+
+#include <ipmid/api.h>
+#include <stdint.h>
+
+#include <map>
+#include <string>
+
+// IPMI commands for net functions.
+enum ipmi_netfn_oem_cmds
+{
+    IPMI_CMD_DETECT_RISERF = 0x01,
+};
+
+constexpr int initError = -1;        /* The parameter of definition error */
+constexpr unsigned char command = 0; /* The parameter of smbus command */
+constexpr unsigned char a[] = {
+    0x00, 0x00}; /* The response data : CPU0 & CPU1 are not present */
+constexpr unsigned char b[] = {
+    0x00, 0x01}; /* The response data : CPU1 is present but CPU0 isn't */
+constexpr unsigned char c[] = {
+    0x01, 0x00}; /* The response data : CPU0 is present but CPU1 isn't */
+constexpr unsigned char d[] = {
+    0x01, 0x01}; /* The response data : CPU0 & CPU1 are present */
+
+ipmi_ret_t ipmi_wistron_detect_riserf(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);