1 | // SPDX-License-Identifier: GPL-2.0 |
---|---|
2 | /* |
3 | * SMP support for R-Mobile / SH-Mobile |
4 | * |
5 | * Copyright (C) 2010 Magnus Damm |
6 | * Copyright (C) 2011 Paul Mundt |
7 | * |
8 | * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved |
9 | */ |
10 | #include <linux/init.h> |
11 | #include <asm/cacheflush.h> |
12 | #include <asm/smp_plat.h> |
13 | #include "common.h" |
14 | |
15 | extern unsigned long shmobile_smp_fn[]; |
16 | extern unsigned long shmobile_smp_arg[]; |
17 | extern unsigned long shmobile_smp_mpidr[]; |
18 | |
19 | void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) |
20 | { |
21 | shmobile_smp_fn[cpu] = 0; |
22 | flush_cache_all(); |
23 | |
24 | shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu); |
25 | shmobile_smp_fn[cpu] = fn; |
26 | shmobile_smp_arg[cpu] = arg; |
27 | flush_cache_all(); |
28 | } |
29 | |
30 | #ifdef CONFIG_HOTPLUG_CPU |
31 | bool shmobile_smp_cpu_can_disable(unsigned int cpu) |
32 | { |
33 | return true; /* Hotplug of any CPU is supported */ |
34 | } |
35 | #endif |
36 |