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https://github.com/ARM-software/arm-trusted-firmware.git
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5003a332b8
This corrects the MISRA violation C2012-15.5: A function should have a single point of exit at the end. Introduced a temporary variable to store the return value to ensure single return for the function. Change-Id: Ib8b3339f32031a3657f6c349763a20a99fd828e7 Signed-off-by: Maheedhar Bollapalli <maheedharsai.bollapalli@amd.com>
68 lines
2 KiB
C
68 lines
2 KiB
C
/*
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* Copyright (c) 2018, Arm Limited and Contributors. All rights reserved.
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* Copyright (c) 2018-2022, Xilinx, Inc. All rights reserved.
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* Copyright (c) 2022, Advanced Micro Devices, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <common/debug.h>
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#include <plat/common/platform.h>
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#include <plat_private.h>
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#include <platform_def.h>
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static const uint8_t plat_power_domain_tree_desc[] = {
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/* Number of root nodes */
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1,
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/* Number of clusters */
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PLATFORM_CLUSTER_COUNT,
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/* Number of children for the first cluster node */
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PLATFORM_CORE_COUNT_PER_CLUSTER,
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/* Number of children for the second cluster node */
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PLATFORM_CORE_COUNT_PER_CLUSTER,
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/* Number of children for the third cluster node */
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PLATFORM_CORE_COUNT_PER_CLUSTER,
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/* Number of children for the fourth cluster node */
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PLATFORM_CORE_COUNT_PER_CLUSTER,
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};
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const uint8_t *plat_get_power_domain_tree_desc(void)
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{
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return plat_power_domain_tree_desc;
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}
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/*******************************************************************************
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* This function implements a part of the critical interface between the psci
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* generic layer and the platform that allows the former to query the platform
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* to convert an MPIDR to a unique linear index. An error code (-1) is returned
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* in case the MPIDR is invalid.
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******************************************************************************/
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int32_t plat_core_pos_by_mpidr(u_register_t mpidr)
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{
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uint32_t cluster_id, cpu_id;
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int32_t ret;
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mpidr &= MPIDR_AFFINITY_MASK;
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cluster_id = (uint32_t)MPIDR_AFFLVL2_VAL(mpidr);
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cpu_id = (uint32_t)MPIDR_AFFLVL1_VAL(mpidr);
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if (cluster_id >= PLATFORM_CLUSTER_COUNT) {
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ret = E_INVALID_CLUSTER_COUNT;
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goto exit_label;
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}
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/*
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* Validate cpu_id by checking whether it represents a CPU in
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* one of the two clusters present on the platform.
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*/
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if (cpu_id >= PLATFORM_CORE_COUNT_PER_CLUSTER) {
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ret = E_INVALID_CORE_COUNT;
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} else {
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ret = (int32_t)(cpu_id + (cluster_id * PLATFORM_CORE_COUNT_PER_CLUSTER));
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}
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exit_label:
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return ret;
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}
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