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

source/trusted-firmware/trusted-firmware-a-2.8/plat/xilinx/versal_net/plat_topology.c

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2022, Xilinx, Inc. All rights reserved.
+ * Copyright (C) 2022, Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <plat/common/platform.h>
+
+#include <plat_private.h>
+#include <platform_def.h>
+
+static const uint8_t plat_power_domain_tree_desc[] = {
+	/* Number of root nodes */
+	1,
+	/* Number of clusters */
+	PLATFORM_CLUSTER_COUNT,
+	/* Number of children for the first cluster node */
+	PLATFORM_CORE_COUNT_PER_CLUSTER,
+	/* Number of children for the second cluster node */
+	PLATFORM_CORE_COUNT_PER_CLUSTER,
+	/* Number of children for the third cluster node */
+	PLATFORM_CORE_COUNT_PER_CLUSTER,
+	/* Number of children for the fourth cluster node */
+	PLATFORM_CORE_COUNT_PER_CLUSTER,
+};
+
+const uint8_t *plat_get_power_domain_tree_desc(void)
+{
+	return plat_power_domain_tree_desc;
+}
+
+/*******************************************************************************
+ * This function implements a part of the critical interface between the psci
+ * generic layer and the platform that allows the former to query the platform
+ * to convert an MPIDR to a unique linear index. An error code (-1) is returned
+ * in case the MPIDR is invalid.
+ ******************************************************************************/
+int32_t plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	uint32_t cluster_id, cpu_id;
+
+	mpidr &= MPIDR_AFFINITY_MASK;
+
+	cluster_id = MPIDR_AFFLVL2_VAL(mpidr);
+	cpu_id = MPIDR_AFFLVL1_VAL(mpidr);
+
+	if (cluster_id >= PLATFORM_CLUSTER_COUNT) {
+		return -3;
+	}
+
+	/*
+	 * Validate cpu_id by checking whether it represents a CPU in
+	 * one of the two clusters present on the platform.
+	 */
+	if (cpu_id >= PLATFORM_CORE_COUNT_PER_CLUSTER) {
+		return -1;
+	}
+
+	return (cpu_id + (cluster_id * PLATFORM_CORE_COUNT_PER_CLUSTER));
+}