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/*
* linux/arch/arm/mach-vexpress/platsmp.c
*
* 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/smp.h>
#include <linux/io.h>
#include <mach/motherboard.h>
#define V2M_PA_CS7 0x10000000
#include "core.h"
extern void versatile_secondary_startup(void);
/*
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
*/
void __init smp_init_cpus(void)
{
ct_desc->init_cpu_map();
}
void __init platform_smp_prepare_cpus(unsigned int max_cpus)
{
/*
* Initialise the present map, which describes the set of CPUs
* actually populated at the present time.
*/
ct_desc->smp_enable(max_cpus);
/*
* Write the address of secondary startup into the
* system-wide flags register. The boot monitor waits
* until it receives a soft interrupt, and then the
* secondary CPU branches to this address.
*/
writel(~0, MMIO_P2V(V2M_SYS_FLAGSCLR));
writel(virt_to_phys(versatile_secondary_startup),
MMIO_P2V(V2M_SYS_FLAGSSET));
}
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