synquacer: Enable CCN driver support

synquacer has CCN-512 interconnect. So enable proper CCN driver
initialization.
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>

plat/socionext/synquacer/include/platform_def.h

@@ -24,6 +24,21 @@
 #define BL31_SIZE			0x00080000
 #define BL31_LIMIT			(BL31_BASE + BL31_SIZE)
 
+#define PLAT_SQ_CCN_BASE		0x32000000
+#define PLAT_SQ_CLUSTER_TO_CCN_ID_MAP					\
+					0,	/* Cluster 0 */		\
+					18,	/* Cluster 1 */		\
+					11,	/* Cluster 2 */		\
+					29,	/* Cluster 3 */		\
+					35,	/* Cluster 4 */		\
+					17,	/* Cluster 5 */		\
+					12,	/* Cluster 6 */		\
+					30,	/* Cluster 7 */		\
+					14,	/* Cluster 8 */		\
+					32,	/* Cluster 9 */		\
+					15,	/* Cluster 10 */	\
+					33	/* Cluster 11 */
+
 /* UART related constants */
 #define PLAT_SQ_BOOT_UART_BASE		0x2A400000
 #define PLAT_SQ_BOOT_UART_CLK_IN_HZ	62500000

plat/socionext/synquacer/include/sq_common.h

@@ -9,6 +9,10 @@
 
 #include <sys/types.h>
 
+void plat_sq_interconnect_init(void);
+void plat_sq_interconnect_enter_coherency(void);
+void plat_sq_interconnect_exit_coherency(void);
+
 unsigned int sq_calc_core_pos(u_register_t mpidr);
 
 #endif /* __SQ_COMMON_H__ */

plat/socionext/synquacer/sq_bl31_setup.c

@@ -11,6 +11,7 @@
 #include <bl_common.h>
 #include <pl011.h>
 #include <debug.h>
+#include <sq_common.h>
 
 static console_pl011_t console;
 static entry_point_info_t bl32_image_ep_info;
@@ -95,6 +96,9 @@ void bl31_early_platform_setup(bl31_params_t *from_bl2,
 
 void bl31_platform_setup(void)
 {
+	/* Initialize the CCN interconnect */
+	plat_sq_interconnect_init();
+	plat_sq_interconnect_enter_coherency();
 }
 
 void bl31_plat_runtime_setup(void)

plat/socionext/synquacer/sq_ccn.c

+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <ccn.h>
+#include <platform_def.h>
+
+static const unsigned char master_to_rn_id_map[] = {
+	PLAT_SQ_CLUSTER_TO_CCN_ID_MAP
+};
+
+static const ccn_desc_t sq_ccn_desc = {
+	.periphbase = PLAT_SQ_CCN_BASE,
+	.num_masters = ARRAY_SIZE(master_to_rn_id_map),
+	.master_to_rn_id_map = master_to_rn_id_map
+};
+
+/******************************************************************************
+ * Helper function to initialize SQ CCN driver.
+ *****************************************************************************/
+void plat_sq_interconnect_init(void)
+{
+	ccn_init(&sq_ccn_desc);
+}
+
+/******************************************************************************
+ * Helper function to place current master into coherency
+ *****************************************************************************/
+void plat_sq_interconnect_enter_coherency(void)
+{
+	ccn_enter_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}
+
+/******************************************************************************
+ * Helper function to remove current master from coherency
+ *****************************************************************************/
+void plat_sq_interconnect_exit_coherency(void)
+{
+	ccn_exit_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}