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>
20 #include <asm/hardware/gic.h>
21 #include <asm/mach-types.h>
22 #include <mach/common.h>
23 #include <mach/emev2.h>
25 #define is_sh73a0() (machine_is_ag5evm() || machine_is_kota2() || \
26 of_machine_is_compatible("renesas,sh73a0"))
27 #define is_r8a7779() machine_is_marzen()
28 #define is_emev2() of_machine_is_compatible("renesas,emev2")
30 static unsigned int __init shmobile_smp_get_core_count(void)
33 return sh73a0_get_core_count();
36 return r8a7779_get_core_count();
39 return emev2_get_core_count();
44 static void __init shmobile_smp_prepare_cpus(void)
47 sh73a0_smp_prepare_cpus();
50 r8a7779_smp_prepare_cpus();
53 emev2_smp_prepare_cpus();
56 int shmobile_platform_cpu_kill(unsigned int cpu)
59 return r8a7779_platform_cpu_kill(cpu);
62 return emev2_platform_cpu_kill(cpu);
67 void __cpuinit platform_secondary_init(unsigned int cpu)
72 sh73a0_secondary_init(cpu);
75 r8a7779_secondary_init(cpu);
78 emev2_secondary_init(cpu);
81 int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
84 return sh73a0_boot_secondary(cpu);
87 return r8a7779_boot_secondary(cpu);
90 return emev2_boot_secondary(cpu);
95 void __init smp_init_cpus(void)
97 unsigned int ncores = shmobile_smp_get_core_count();
100 if (ncores > nr_cpu_ids) {
101 pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
106 for (i = 0; i < ncores; i++)
107 set_cpu_possible(i, true);
109 set_smp_cross_call(gic_raise_softirq);
112 void __init platform_smp_prepare_cpus(unsigned int max_cpus)
114 shmobile_smp_prepare_cpus();