blob: 02e21bceb0856bc5ac5c769af3362afab2927c99 (
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
|
/*
* 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 <asm/cacheflush.h>
#include <asm/smp_plat.h>
#include "common.h"
extern unsigned long shmobile_smp_fn[];
extern unsigned long shmobile_smp_arg[];
extern unsigned long shmobile_smp_mpidr[];
void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg)
{
shmobile_smp_fn[cpu] = 0;
flush_cache_all();
shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu);
shmobile_smp_fn[cpu] = fn;
shmobile_smp_arg[cpu] = arg;
flush_cache_all();
}
#ifdef CONFIG_HOTPLUG_CPU
bool shmobile_smp_cpu_can_disable(unsigned int cpu)
{
return true; /* Hotplug of any CPU is supported */
}
#endif
bool __init shmobile_smp_init_fallback_ops(void)
{
/* fallback on PSCI/smp_ops if no other DT based method is detected */
if (!IS_ENABLED(CONFIG_SMP))
return false;
return platform_can_secondary_boot() ? true : false;
}
|
