aboutsummaryrefslogtreecommitdiff
path: root/plat/renesas/rcar/plat_topology.c
diff options
context:
space:
mode:
Diffstat (limited to 'plat/renesas/rcar/plat_topology.c')
-rw-r--r--plat/renesas/rcar/plat_topology.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/plat/renesas/rcar/plat_topology.c b/plat/renesas/rcar/plat_topology.c
new file mode 100644
index 0000000000..3582c2bde3
--- /dev/null
+++ b/plat/renesas/rcar/plat_topology.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2018, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+#include <platform_def.h>
+#include <psci.h>
+
+static const unsigned char rcar_power_domain_tree_desc[] = {
+ 1,
+ PLATFORM_CLUSTER_COUNT,
+ PLATFORM_CLUSTER0_CORE_COUNT,
+ PLATFORM_CLUSTER1_CORE_COUNT
+};
+
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+ return rcar_power_domain_tree_desc;
+}
+
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+ unsigned int cluster_id, cpu_id;
+
+ mpidr &= MPIDR_AFFINITY_MASK;
+
+ if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
+ return -1;
+
+ cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
+ cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
+
+ if (cluster_id >= PLATFORM_CLUSTER_COUNT)
+ return -1;
+
+ if (cluster_id == 0 && cpu_id >= PLATFORM_CLUSTER0_CORE_COUNT)
+ return -1;
+
+ if (cluster_id == 1 && cpu_id >= PLATFORM_CLUSTER1_CORE_COUNT)
+ return -1;
+
+ return (cpu_id + cluster_id * PLATFORM_CLUSTER0_CORE_COUNT);
+}
+