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diff --git a/cvmx-key.h b/cvmx-key.h
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+/***********************license start***************
+ *  Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
+ *  reserved.
+ *
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *        notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials provided
+ *        with the distribution.
+ *
+ *      * Neither the name of Cavium Networks nor the names of
+ *        its contributors may be used to endorse or promote products
+ *        derived from this software without specific prior written
+ *        permission.
+ *
+ *  TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
+ *  AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
+ *  OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
+ *  RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
+ *  REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
+ *  DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
+ *  OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
+ *  PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
+ *  POSSESSION OR CORRESPONDENCE TO DESCRIPTION.  THE ENTIRE RISK ARISING OUT
+ *  OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
+ *
+ *
+ *  For any questions regarding licensing please contact marketing@caviumnetworks.com
+ *
+ ***********************license end**************************************/
+
+
+
+
+
+
+/**
+ * @file
+ *
+ * Interface to the on chip key memory. Key memory is
+ * 8k on chip that is inaccessible from off chip. It can
+ * also be cleared using an external hardware pin.
+ *
+ * <hr>$Revision: 41586 $<hr>
+ *
+ */
+
+#ifndef __CVMX_KEY_H__
+#define __CVMX_KEY_H__
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define CVMX_KEY_MEM_SIZE 8192  /* Size in bytes */
+
+
+/**
+ * Read from KEY memory
+ *
+ * @param address Address (byte) in key memory to read
+ *                0 <= address < CVMX_KEY_MEM_SIZE
+ * @return Value from key memory
+ */
+static inline uint64_t cvmx_key_read(uint64_t address)
+{
+    cvmx_addr_t ptr;
+
+    ptr.u64 = 0;
+    ptr.sio.mem_region  = CVMX_IO_SEG;
+    ptr.sio.is_io       = 1;
+    ptr.sio.did         = CVMX_OCT_DID_KEY_RW;
+    ptr.sio.offset      = address;
+
+    return cvmx_read_csr(ptr.u64);
+}
+
+
+/**
+ * Write to KEY memory
+ *
+ * @param address Address (byte) in key memory to write
+ *                0 <= address < CVMX_KEY_MEM_SIZE
+ * @param value   Value to write to key memory
+ */
+static inline void cvmx_key_write(uint64_t address, uint64_t value)
+{
+    cvmx_addr_t ptr;
+
+    ptr.u64 = 0;
+    ptr.sio.mem_region  = CVMX_IO_SEG;
+    ptr.sio.is_io       = 1;
+    ptr.sio.did         = CVMX_OCT_DID_KEY_RW;
+    ptr.sio.offset      = address;
+
+    cvmx_write_io(ptr.u64, value);
+}
+
+
+/* CSR typedefs have been moved to cvmx-csr-*.h */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /*  __CVMX_KEY_H__ */