synquacer: Implement topology functions

These functions describe the layout of the cores and clusters in order
to support the PSCI framework.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>

plat/socionext/synquacer/include/platform_def.h

@@ -9,6 +9,12 @@
 
 #include <common_def.h>
 
+/* CPU topology */
+#define PLAT_MAX_CORES_PER_CLUSTER	2
+#define PLAT_CLUSTER_COUNT		12
+#define PLATFORM_CORE_COUNT		(PLAT_CLUSTER_COUNT *	\
+					 PLAT_MAX_CORES_PER_CLUSTER)
+
 #define CACHE_WRITEBACK_SHIFT		6
 #define CACHE_WRITEBACK_GRANULE		(1 << CACHE_WRITEBACK_SHIFT)
 

plat/socionext/synquacer/include/sq_common.h

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __SQ_COMMON_H__
+#define __SQ_COMMON_H__
+
+#include <sys/types.h>
+
+unsigned int sq_calc_core_pos(u_register_t mpidr);
+
+#endif /* __SQ_COMMON_H__ */

plat/socionext/synquacer/sq_topology.c

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <sq_common.h>
+#include <platform_def.h>
+
+unsigned char sq_pd_tree_desc[PLAT_CLUSTER_COUNT + 1];
+
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	unsigned int cluster_id, cpu_id;
+
+	cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
+	if (cluster_id >= PLAT_CLUSTER_COUNT)
+		return -1;
+
+	cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
+	if (cpu_id >= PLAT_MAX_CORES_PER_CLUSTER)
+		return -1;
+
+	return sq_calc_core_pos(mpidr);
+}
+
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	int i;
+
+	sq_pd_tree_desc[0] = PLAT_CLUSTER_COUNT;
+
+	for (i = 0; i < PLAT_CLUSTER_COUNT; i++)
+		sq_pd_tree_desc[i + 1] = PLAT_MAX_CORES_PER_CLUSTER;
+
+	return sq_pd_tree_desc;
+}