| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 |