78 lines
3.2 KiB
C
78 lines
3.2 KiB
C
/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arm_def.h>
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#include <plat_arm.h>
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#include "juno_def.h"
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/*
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* On Juno, the system power level is the highest power level.
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* The first entry in the power domain descriptor specifies the
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* number of system power domains i.e. 1.
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*/
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#define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT
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/*
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* The Juno power domain tree descriptor. The cluster power domains
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* are arranged so that when the PSCI generic code creates the power
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* domain tree, the indices of the CPU power domain nodes it allocates
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* match the linear indices returned by plat_core_pos_by_mpidr()
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* i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher
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* indices for CLUSTER0 CPUs.
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*/
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const unsigned char juno_power_domain_tree_desc[] = {
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/* No of root nodes */
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JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL,
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/* No of children for the root node */
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JUNO_CLUSTER_COUNT,
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/* No of children for the first cluster node */
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JUNO_CLUSTER1_CORE_COUNT,
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/* No of children for the second cluster node */
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JUNO_CLUSTER0_CORE_COUNT
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};
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/*******************************************************************************
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* This function returns the Juno topology tree information.
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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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return juno_power_domain_tree_desc;
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}
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/*******************************************************************************
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* This function returns the core count within the cluster corresponding to
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* `mpidr`.
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******************************************************************************/
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unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr)
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{
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return (((mpidr) & 0x100) ? JUNO_CLUSTER1_CORE_COUNT :\
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JUNO_CLUSTER0_CORE_COUNT);
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}
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