diff --git a/include/drivers/arm/ccn.h b/include/drivers/arm/ccn.h
new file mode 100644
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+++ b/include/drivers/arm/ccn.h
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+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. 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 ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __CCN_H__
+#define __CCN_H__
+
+/*
+ * This macro defines the maximum number of master interfaces that reside on
+ * Request nodes which the CCN driver can accommodate. The driver APIs to add
+ * and remove Request nodes from snoop/dvm domains take a bit map of master
+ * interfaces as inputs. The largest C data type that can be used is a 64-bit
+ * unsigned integer. Hence the value of 64. The platform will have to ensure
+ * that the master interfaces are numbered from 0-63.
+ */
+#define CCN_MAX_RN_MASTERS	64
+
+/*
+ * The following constants define the various run modes that the platform can
+ * request the CCN driver to place the L3 cache in. These map to the
+ * programmable P-State values in a HN-F P-state register.
+ */
+#define CCN_L3_RUN_MODE_NOL3	0x0	/* HNF_PM_NOL3 */
+#define CCN_L3_RUN_MODE_SFONLY	0x1	/* HNF_PM_SFONLY */
+#define CCN_L3_RUN_MODE_HAM	0x2	/* HNF_PM_HALF */
+#define CCN_L3_RUN_MODE_FAM	0x3	/* HNF_PM_FULL */
+
+/*
+ * The following macro takes the value returned from a read of a HN-F P-state
+ * status register and returns the retention state value.
+ */
+#define CCN_GET_RETENTION_STATE(pstate)	((pstate >> 4) & 0x3)
+
+/*
+ * The following macro takes the value returned from a read of a HN-F P-state
+ * status register and returns the run state value.
+ */
+#define CCN_GET_RUN_STATE(pstate)	(pstate & 0xf)
+
+#ifndef __ASSEMBLY__
+#include <stdint.h>
+
+/*
+ * This structure describes some of the implementation defined attributes of the
+ * CCN IP. It is used by the platform port to specify these attributes in order
+ * to initialise the CCN driver. The attributes are described below.
+ *
+ * 1. The 'num_masters' field specifies the total number of master interfaces
+ *    resident on Request nodes.
+ *
+ * 2. The 'master_to_rn_id_map' field is a ponter to an array in which each
+ *    index corresponds to a master interface and its value corresponds to the
+ *    Request node on which the master interface resides.
+ *    This field is not simply defined as an array of size CCN_MAX_RN_MASTERS.
+ *    In reality, a platform will have much fewer master * interfaces than
+ *    CCN_MAX_RN_MASTERS. With an array of this size, it would also have to
+ *    set the unused entries to a suitable value. Zeroing the array would not
+ *    be enough since 0 is also a valid node id. Hence, such an array is not
+ *    used.
+ *
+ * 3. The 'periphbase' field is the base address of the programmer's view of the
+ *    CCN IP.
+ */
+typedef struct ccn_desc {
+	unsigned int num_masters;
+	const unsigned char *master_to_rn_id_map;
+	uintptr_t periphbase;
+} ccn_desc_t;
+
+
+void ccn_init(const ccn_desc_t *plat_ccn_desc);
+void ccn_enter_snoop_dvm_domain(unsigned long long master_iface_map);
+void ccn_exit_snoop_dvm_domain(unsigned long long master_iface_map);
+void ccn_enter_dvm_domain(unsigned long long master_iface_map);
+void ccn_exit_dvm_domain(unsigned long long master_iface_map);
+void ccn_set_l3_run_mode(unsigned int mode);
+void ccn_program_sys_addrmap(unsigned int sn0_id,
+		 unsigned int sn1_id,
+		 unsigned int sn2_id,
+		 unsigned int top_addr_bit0,
+		 unsigned int top_addr_bit1,
+		 unsigned char three_sn_en);
+unsigned int ccn_get_l3_run_mode(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CCN_H__ */