blob: 8797a7001720a3148a617a68ca8e1e46501072a1 [file] [log] [blame]
* Copyright 2010-2011 Calxeda, Inc.
* Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <>.
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/smp_scu.h>
#include "core.h"
extern void secondary_startup(void);
static void __cpuinit highbank_secondary_init(unsigned int cpu)
static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle)
highbank_set_cpu_jump(cpu, secondary_startup);
return 0;
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
static void __init highbank_smp_init_cpus(void)
unsigned int i, ncores = 4;
/* sanity check */
if (ncores > NR_CPUS) {
"highbank: no. of cores (%d) greater than configured "
"maximum of %d - clipping\n",
ncores, NR_CPUS);
ncores = NR_CPUS;
for (i = 0; i < ncores; i++)
set_cpu_possible(i, true);
static void __init highbank_smp_prepare_cpus(unsigned int max_cpus)
if (scu_base_addr)
struct smp_operations highbank_smp_ops __initdata = {
.smp_init_cpus = highbank_smp_init_cpus,
.smp_prepare_cpus = highbank_smp_prepare_cpus,
.smp_secondary_init = highbank_secondary_init,
.smp_boot_secondary = highbank_boot_secondary,
.cpu_die = highbank_cpu_die,