GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/plat/renesas/common/plat_topology.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2018, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <lib/psci/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);
+}
+