blob: 993381257f69a6352adcc7e61df3d92d65b88643 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* SMP support for R-Mobile / SH-Mobile
*
* Copyright (C) 2010 Magnus Damm
* Copyright (C) 2011 Paul Mundt
*
* Based on vexpress, 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/delay.h>
#include <linux/device.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <asm/hardware/gic.h>
#include <asm/localtimer.h>
#include <asm/mach-types.h>
#include <mach/common.h>
#define is_sh73a0() (machine_is_ag5evm() || machine_is_kota2())
#define is_r8a7779() machine_is_marzen()
static unsigned int __init shmobile_smp_get_core_count(void)
{
if (is_sh73a0())
return sh73a0_get_core_count();
if (is_r8a7779())
return r8a7779_get_core_count();
return 1;
}
static void __init shmobile_smp_prepare_cpus(void)
{
if (is_sh73a0())
sh73a0_smp_prepare_cpus();
if (is_r8a7779())
r8a7779_smp_prepare_cpus();
}
int shmobile_platform_cpu_kill(unsigned int cpu)
{
if (is_r8a7779())
return r8a7779_platform_cpu_kill(cpu);
return 1;
}
void __cpuinit platform_secondary_init(unsigned int cpu)
{
trace_hardirqs_off();
if (is_sh73a0())
sh73a0_secondary_init(cpu);
if (is_r8a7779())
r8a7779_secondary_init(cpu);
}
int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
{
if (is_sh73a0())
return sh73a0_boot_secondary(cpu);
if (is_r8a7779())
return r8a7779_boot_secondary(cpu);
return -ENOSYS;
}
void __init smp_init_cpus(void)
{
unsigned int ncores = shmobile_smp_get_core_count();
unsigned int i;
if (ncores > nr_cpu_ids) {
pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
ncores, nr_cpu_ids);
ncores = nr_cpu_ids;
}
for (i = 0; i < ncores; i++)
set_cpu_possible(i, true);
set_smp_cross_call(gic_raise_softirq);
}
void __init platform_smp_prepare_cpus(unsigned int max_cpus)
{
shmobile_smp_prepare_cpus();
}
|