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58192800e0
Change-Id: I278d6876508800abff7aa2480910306a24de5378 Signed-off-by: Nariman Poushin <nariman.poushin@linaro.org>
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/*
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* Copyright (c) 2015-2018, ARM Limited and Contributors. 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 <plat_arm.h>
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#include <platform.h>
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#include <assert.h>
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#if ARM_PLAT_MT
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#pragma weak plat_arm_get_cpu_pe_count
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#endif
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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
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* returned in case the MPIDR is invalid.
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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 (arm_check_mpidr(mpidr) == 0) {
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#if ARM_PLAT_MT
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assert((read_mpidr_el1() & MPIDR_MT_MASK) != 0);
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/*
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* The DTB files don't provide the MT bit in the mpidr argument
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* so set it manually before calculating core position
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*/
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mpidr |= MPIDR_MT_MASK;
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#endif
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return plat_arm_calc_core_pos(mpidr);
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}
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return -1;
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}
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#if ARM_PLAT_MT
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/******************************************************************************
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* This function returns the PE count within the physical cpu corresponding to
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* `mpidr`. Now one cpu only have one thread, so just return 1.
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*****************************************************************************/
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unsigned int plat_arm_get_cpu_pe_count(u_register_t mpidr)
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{
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return 1;
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}
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#endif /* ARM_PLAT_MT */
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