diff --git a/include/linux/hdpu_features.h b/include/linux/hdpu_features.h
new file mode 100644
index 0000000..6a87154
--- /dev/null
+++ b/include/linux/hdpu_features.h
@@ -0,0 +1,26 @@
+#include <linux/spinlock.h>
+
+struct cpustate_t {
+	spinlock_t lock;
+	int excl;
+        int open_count;
+	unsigned char cached_val;
+	int inited;
+	unsigned long *set_addr;
+	unsigned long *clr_addr;
+};
+
+
+#define HDPU_CPUSTATE_NAME "hdpu cpustate"
+#define HDPU_NEXUS_NAME "hdpu nexus"
+
+#define CPUSTATE_KERNEL_MAJOR  0x10
+
+#define CPUSTATE_KERNEL_INIT_DRV   0 /* CPU State Driver Initialized */
+#define CPUSTATE_KERNEL_INIT_PCI   1 /* 64360 PCI Busses Init */
+#define CPUSTATE_KERNEL_INIT_REG   2 /* 64360 Bridge Init */
+#define CPUSTATE_KERNEL_CPU1_KICK  3 /* Boot cpu 1 */
+#define CPUSTATE_KERNEL_CPU1_OK    4  /* Cpu 1 has checked in */
+#define CPUSTATE_KERNEL_OK         5 /* Terminal state */
+#define CPUSTATE_KERNEL_RESET   14 /* Board reset via SW*/
+#define CPUSTATE_KERNEL_HALT   15 /* Board halted via SW*/