2 * SMP support for R-Mobile / SH-Mobile
4 * Copyright (C) 2010 Magnus Damm
5 * Copyright (C) 2011 Paul Mundt
7 * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 #include <linux/init.h>
14 #include <linux/errno.h>
15 #include <linux/delay.h>
16 #include <linux/device.h>
17 #include <linux/smp.h>
19 #include <asm/hardware/gic.h>
20 #include <asm/localtimer.h>
21 #include <asm/mach-types.h>
22 #include <mach/common.h>
24 #define is_sh73a0() (machine_is_ag5evm() || machine_is_kota2())
25 #define is_r8a7779() machine_is_marzen()
27 static unsigned int __init shmobile_smp_get_core_count(void)
30 return sh73a0_get_core_count();
33 return r8a7779_get_core_count();
38 static void __init shmobile_smp_prepare_cpus(void)
41 sh73a0_smp_prepare_cpus();
44 r8a7779_smp_prepare_cpus();
47 int shmobile_platform_cpu_kill(unsigned int cpu)
50 return r8a7779_platform_cpu_kill(cpu);
55 void __cpuinit platform_secondary_init(unsigned int cpu)
60 sh73a0_secondary_init(cpu);
63 r8a7779_secondary_init(cpu);
66 int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
69 return sh73a0_boot_secondary(cpu);
72 return r8a7779_boot_secondary(cpu);
77 void __init smp_init_cpus(void)
79 unsigned int ncores = shmobile_smp_get_core_count();
82 if (ncores > nr_cpu_ids) {
83 pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
88 for (i = 0; i < ncores; i++)
89 set_cpu_possible(i, true);
91 set_smp_cross_call(gic_raise_softirq);
94 void __init platform_smp_prepare_cpus(unsigned int max_cpus)
96 shmobile_smp_prepare_cpus();