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/*
* 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));
}
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