diff --git a/drivers/arm/cci/cci.c b/drivers/arm/cci/cci.c
index 04530b0..e156838 100644
--- a/drivers/arm/cci/cci.c
+++ b/drivers/arm/cci/cci.c
@@ -11,11 +11,26 @@
 #include <mmio.h>
 #include <stdint.h>
 
-static uintptr_t g_cci_base;
-static unsigned int g_max_master_id;
-static const int *g_cci_slave_if_map;
+#define MAKE_CCI_PART_NUMBER(hi, lo)	((hi << 8) | lo)
+#define CCI_PART_LO_MASK		0xff
+#define CCI_PART_HI_MASK		0xf
+
+/* CCI part number codes read from Peripheral ID registers 0 and 1 */
+#define CCI400_PART_NUM		0x420
+#define CCI500_PART_NUM		0x422
+#define CCI550_PART_NUM		0x423
+
+#define CCI400_SLAVE_PORTS	5
+#define CCI500_SLAVE_PORTS	7
+#define CCI550_SLAVE_PORTS	7
+
+static uintptr_t cci_base;
+static const int *cci_slave_if_map;
 
 #if ENABLE_ASSERTIONS
+static unsigned int max_master_id;
+static int cci_num_slave_ports;
+
 static int validate_cci_map(const int *map)
 {
 	unsigned int valid_cci_map = 0;
@@ -23,13 +38,13 @@
 	int i;
 
 	/* Validate the map */
-	for (i = 0; i <= g_max_master_id; i++) {
+	for (i = 0; i <= max_master_id; i++) {
 		slave_if_id = map[i];
 
 		if (slave_if_id < 0)
 			continue;
 
-		if (slave_if_id >= CCI_SLAVE_INTERFACE_COUNT) {
+		if (slave_if_id >= cci_num_slave_ports) {
 			ERROR("Slave interface ID is invalid\n");
 			return 0;
 		}
@@ -48,70 +63,105 @@
 
 	return 1;
 }
+
+/*
+ * Read CCI part number from Peripheral ID registers
+ */
+static unsigned int read_cci_part_number(uintptr_t base)
+{
+	unsigned int part_lo, part_hi;
+
+	part_lo = mmio_read_32(base + PERIPHERAL_ID0) & CCI_PART_LO_MASK;
+	part_hi = mmio_read_32(base + PERIPHERAL_ID1) & CCI_PART_HI_MASK;
+
+	return MAKE_CCI_PART_NUMBER(part_hi, part_lo);
+}
+
+/*
+ * Identify a CCI device, and return the number of slaves. Return -1 for an
+ * unidentified device.
+ */
+static int get_slave_ports(unsigned int part_num)
+{
+	/* Macro to match CCI products */
+#define RET_ON_MATCH(product) \
+	case CCI ## product ## _PART_NUM: \
+		return CCI ## product ## _SLAVE_PORTS
+
+	switch (part_num) {
+
+	RET_ON_MATCH(400);
+	RET_ON_MATCH(500);
+	RET_ON_MATCH(550);
+
+	default:
+		return -1;
+	}
+
+#undef RET_ON_MATCH
+}
 #endif /* ENABLE_ASSERTIONS */
 
-void cci_init(uintptr_t cci_base,
-		const int *map,
-		unsigned int num_cci_masters)
+void cci_init(uintptr_t base, const int *map, unsigned int num_cci_masters)
 {
 	assert(map);
-	assert(cci_base);
+	assert(base);
 
-	g_cci_base = cci_base;
+	cci_base = base;
+	cci_slave_if_map = map;
 
+#if ENABLE_ASSERTIONS
 	/*
 	 * Master Id's are assigned from zero, So in an array of size n
 	 * the max master id is (n - 1).
 	 */
-	g_max_master_id = num_cci_masters - 1;
+	max_master_id = num_cci_masters - 1;
+	cci_num_slave_ports = get_slave_ports(read_cci_part_number(base));
+#endif
+	assert(cci_num_slave_ports >= 0);
 
 	assert(validate_cci_map(map));
-	g_cci_slave_if_map = map;
 }
 
 void cci_enable_snoop_dvm_reqs(unsigned int master_id)
 {
-	int slave_if_id;
+	int slave_if_id = cci_slave_if_map[master_id];
 
-	assert(g_cci_base);
-	assert(master_id <= g_max_master_id);
-
-	slave_if_id = g_cci_slave_if_map[master_id];
-	assert((slave_if_id < CCI_SLAVE_INTERFACE_COUNT) && (slave_if_id >= 0));
+	assert(master_id <= max_master_id);
+	assert((slave_if_id < cci_num_slave_ports) && (slave_if_id >= 0));
+	assert(cci_base);
 
 	/*
 	 * Enable Snoops and DVM messages, no need for Read/Modify/Write as
 	 * rest of bits are write ignore
 	 */
-	mmio_write_32(g_cci_base +
-		      SLAVE_IFACE_OFFSET(slave_if_id) +
-		      SNOOP_CTRL_REG, DVM_EN_BIT | SNOOP_EN_BIT);
+	mmio_write_32(cci_base +
+		      SLAVE_IFACE_OFFSET(slave_if_id) + SNOOP_CTRL_REG,
+		      DVM_EN_BIT | SNOOP_EN_BIT);
 
 	/* Wait for the dust to settle down */
-	while (mmio_read_32(g_cci_base + STATUS_REG) & CHANGE_PENDING_BIT)
+	while (mmio_read_32(cci_base + STATUS_REG) & CHANGE_PENDING_BIT)
 		;
 }
 
 void cci_disable_snoop_dvm_reqs(unsigned int master_id)
 {
-	int slave_if_id;
+	int slave_if_id = cci_slave_if_map[master_id];
 
-	assert(g_cci_base);
-	assert(master_id <= g_max_master_id);
-
-	slave_if_id = g_cci_slave_if_map[master_id];
-	assert((slave_if_id < CCI_SLAVE_INTERFACE_COUNT) && (slave_if_id >= 0));
+	assert(master_id <= max_master_id);
+	assert((slave_if_id < cci_num_slave_ports) && (slave_if_id >= 0));
+	assert(cci_base);
 
 	/*
 	 * Disable Snoops and DVM messages, no need for Read/Modify/Write as
 	 * rest of bits are write ignore.
 	 */
-	mmio_write_32(g_cci_base +
-		      SLAVE_IFACE_OFFSET(slave_if_id) +
-		      SNOOP_CTRL_REG, ~(DVM_EN_BIT | SNOOP_EN_BIT));
+	mmio_write_32(cci_base +
+		      SLAVE_IFACE_OFFSET(slave_if_id) + SNOOP_CTRL_REG,
+		      ~(DVM_EN_BIT | SNOOP_EN_BIT));
 
 	/* Wait for the dust to settle down */
-	while (mmio_read_32(g_cci_base + STATUS_REG) & CHANGE_PENDING_BIT)
+	while (mmio_read_32(cci_base + STATUS_REG) & CHANGE_PENDING_BIT)
 		;
 }