85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*
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* Copyright (C) 2018 Marvell International Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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* https://spdx.org/licenses
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*/
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#include <plat_marvell.h>
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/* The power domain tree descriptor */
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unsigned char marvell_power_domain_tree_desc[PLAT_MARVELL_CLUSTER_COUNT + 1];
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/*****************************************************************************
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* This function dynamically constructs the topology according to
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* PLAT_MARVELL_CLUSTER_COUNT and returns it.
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*****************************************************************************
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*/
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const unsigned char *plat_get_power_domain_tree_desc(void)
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{
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int i;
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/*
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* The power domain tree does not have a single system level power
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* domain i.e. a single root node. The first entry in the power domain
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* descriptor specifies the number of power domains at the highest power
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* level.
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* For Marvell Platform this is the number of cluster power domains.
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*/
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marvell_power_domain_tree_desc[0] = PLAT_MARVELL_CLUSTER_COUNT;
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for (i = 0; i < PLAT_MARVELL_CLUSTER_COUNT; i++)
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marvell_power_domain_tree_desc[i + 1] =
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PLAT_MARVELL_CLUSTER_CORE_COUNT;
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return marvell_power_domain_tree_desc;
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}
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/*****************************************************************************
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* This function validates an MPIDR by checking whether it falls within the
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* acceptable bounds. An error code (-1) is returned if an incorrect mpidr
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* is passed.
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*****************************************************************************
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*/
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int marvell_check_mpidr(u_register_t mpidr)
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{
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unsigned int nb_id, cluster_id, cpu_id;
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mpidr &= MPIDR_AFFINITY_MASK;
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if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK |
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MPIDR_AFFLVL_MASK << MPIDR_AFF2_SHIFT))
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return -1;
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/* Get north bridge ID */
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nb_id = MPIDR_AFFLVL3_VAL(mpidr);
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cluster_id = MPIDR_AFFLVL1_VAL(mpidr);
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cpu_id = MPIDR_AFFLVL0_VAL(mpidr);
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if (nb_id >= PLAT_MARVELL_CLUSTER_COUNT)
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return -1;
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if (cluster_id >= PLAT_MARVELL_CLUSTER_COUNT)
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return -1;
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if (cpu_id >= PLAT_MARVELL_CLUSTER_CORE_COUNT)
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return -1;
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return 0;
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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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*/
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int plat_core_pos_by_mpidr(u_register_t mpidr)
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{
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if (marvell_check_mpidr(mpidr) == -1)
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return -1;
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return plat_marvell_calc_core_pos(mpidr);
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}
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