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/*
* Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <asm/processor.h>
#include <asm/fw/cfe/cfe_api.h>
#include <asm/fw/cfe/cfe_error.h>
/*
* Use CFE to find out how many CPUs are available, setting up
* phys_cpu_present_map and the logical/physical mappings.
* XXXKW will the boot CPU ever not be physical 0?
*
* Common setup before any secondaries are started
*/
void __init plat_smp_setup(void)
{
int i, num;
cpus_clear(phys_cpu_present_map);
cpu_set(0, phys_cpu_present_map);
__cpu_number_map[0] = 0;
__cpu_logical_map[0] = 0;
for (i = 1, num = 0; i < NR_CPUS; i++) {
if (cfe_cpu_stop(i) == 0) {
cpu_set(i, phys_cpu_present_map);
__cpu_number_map[i] = ++num;
__cpu_logical_map[num] = i;
}
}
printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num);
}
void __init plat_prepare_cpus(unsigned int max_cpus)
{
}
/*
* Setup the PC, SP, and GP of a secondary processor and start it
* running!
*/
void __cpuinit prom_boot_secondary(int cpu, struct task_struct *idle)
{
int retval;
retval = cfe_cpu_start(cpu_logical_map(cpu), &smp_bootstrap,
__KSTK_TOS(idle),
(unsigned long)task_thread_info(idle), 0);
if (retval != 0)
printk("cfe_start_cpu(%i) returned %i\n" , cpu, retval);
}
/*
* Code to run on secondary just after probing the CPU
*/
void __cpuinit prom_init_secondary(void)
{
#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
extern void bcm1480_smp_init(void);
bcm1480_smp_init();
#elif defined(CONFIG_SIBYTE_SB1250)
extern void sb1250_smp_init(void);
sb1250_smp_init();
#else
#error invalid SMP configuration
#endif
}
/*
* Do any tidying up before marking online and running the idle
* loop
*/
void __cpuinit prom_smp_finish(void)
{
#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
extern void bcm1480_smp_finish(void);
bcm1480_smp_finish();
#elif defined(CONFIG_SIBYTE_SB1250)
extern void sb1250_smp_finish(void);
sb1250_smp_finish();
#else
#error invalid SMP configuration
#endif
}
/*
* Final cleanup after all secondaries booted
*/
void prom_cpus_done(void)
{
}
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