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/*
* SMP support for R-Mobile / SH-Mobile
*
* Copyright (C) 2010 Magnus Damm
*
* Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <asm/localtimer.h>
#include <asm/mach-types.h>
#include <mach/common.h>
static unsigned int __init shmobile_smp_get_core_count(void)
{
if (machine_is_ag5evm())
return sh73a0_get_core_count();
return 1;
}
static void __init shmobile_smp_prepare_cpus(void)
{
if (machine_is_ag5evm())
sh73a0_smp_prepare_cpus();
}
void __cpuinit platform_secondary_init(unsigned int cpu)
{
trace_hardirqs_off();
if (machine_is_ag5evm())
sh73a0_secondary_init(cpu);
}
int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
{
if (machine_is_ag5evm())
return sh73a0_boot_secondary(cpu);
return -ENOSYS;
}
void __init smp_init_cpus(void)
{
unsigned int ncores = shmobile_smp_get_core_count();
unsigned int i;
for (i = 0; i < ncores; i++)
set_cpu_possible(i, true);
}
void __init smp_prepare_cpus(unsigned int max_cpus)
{
unsigned int ncores = shmobile_smp_get_core_count();
unsigned int cpu = smp_processor_id();
int i;
smp_store_cpu_info(cpu);
if (max_cpus > ncores)
max_cpus = ncores;
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);
if (max_cpus > 1) {
shmobile_smp_prepare_cpus();
/*
* Enable the local timer or broadcast device for the
* boot CPU, but only if we have more than one CPU.
*/
percpu_timer_setup();
}
}
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