110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
/*
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* Copyright (c) 2013-2015, 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 <arch.h>
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#include <platform_def.h>
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#include <psci.h>
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#if ENABLE_PLAT_COMPAT
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unsigned int plat_get_aff_count(unsigned int aff_lvl, unsigned long mpidr)
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{
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/* Report 1 (absent) instance at levels higher that the cluster level */
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if (aff_lvl > MPIDR_AFFLVL1)
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return PLATFORM_SYSTEM_COUNT;
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if (aff_lvl == MPIDR_AFFLVL1)
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return PLATFORM_CLUSTER_COUNT;
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return mpidr & 0x100 ? PLATFORM_CLUSTER1_CORE_COUNT :
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PLATFORM_CLUSTER0_CORE_COUNT;
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}
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unsigned int plat_get_aff_state(unsigned int aff_lvl, unsigned long mpidr)
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{
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return aff_lvl <= MPIDR_AFFLVL2 ? PSCI_AFF_PRESENT : PSCI_AFF_ABSENT;
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}
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int mt_setup_topology(void)
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{
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/* [TODO] Make topology configurable via SCC */
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return 0;
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}
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#else
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const unsigned char mtk_power_domain_tree_desc[] = {
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/* No of root nodes */
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PLATFORM_SYSTEM_COUNT,
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/* No of children for the root node */
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PLATFORM_CLUSTER_COUNT,
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/* No of children for the first cluster node */
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PLATFORM_CLUSTER0_CORE_COUNT,
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/* No of children for the second cluster node */
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PLATFORM_CLUSTER1_CORE_COUNT
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};
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/*******************************************************************************
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* This function returns the MT8173 default 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 mtk_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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int plat_core_pos_by_mpidr(u_register_t mpidr)
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{
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unsigned int 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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return -1;
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cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
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cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
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if (cluster_id >= PLATFORM_CLUSTER_COUNT)
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return -1;
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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_MAX_CPUS_PER_CLUSTER)
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return -1;
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return (cpu_id + (cluster_id * 4));
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}
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#endif
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