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 15extern unsigned long shmobile_smp_fn[]; 16extern unsigned long shmobile_smp_arg[]; 17extern unsigned long shmobile_smp_mpidr[]; 18 19void 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 31bool shmobile_smp_cpu_can_disable(unsigned int cpu) 32{ 33 return true; /* Hotplug of any CPU is supported */ 34} 35#endif 36