48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
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* SMP support for R-Mobile / SH-Mobile
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*
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* Copyright (C) 2010 Magnus Damm
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* Copyright (C) 2011 Paul Mundt
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*
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* Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <asm/cacheflush.h>
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#include <asm/smp_plat.h>
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#include "common.h"
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extern unsigned long shmobile_smp_fn[];
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extern unsigned long shmobile_smp_arg[];
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extern unsigned long shmobile_smp_mpidr[];
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void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg)
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{
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shmobile_smp_fn[cpu] = 0;
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flush_cache_all();
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shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu);
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shmobile_smp_fn[cpu] = fn;
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shmobile_smp_arg[cpu] = arg;
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flush_cache_all();
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}
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#ifdef CONFIG_HOTPLUG_CPU
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bool shmobile_smp_cpu_can_disable(unsigned int cpu)
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{
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return true; /* Hotplug of any CPU is supported */
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}
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#endif
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bool __init shmobile_smp_init_fallback_ops(void)
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{
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/* fallback on PSCI/smp_ops if no other DT based method is detected */
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if (!IS_ENABLED(CONFIG_SMP))
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return false;
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return platform_can_secondary_boot() ? true : false;
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}
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