projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c51ed4f MD |
1 | /* |
| 2 | * SMP support for R-Mobile / SH-Mobile | |
| 3 | * | |
| 4 | * Copyright (C) 2010 Magnus Damm | |
| c413521e | 5 | * Copyright (C) 2011 Paul Mundt |
| 1c51ed4f MD |
6 | * |
| 7 | * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of the GNU General Public License version 2 as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | */ | |
| 13 | #include <linux/init.h> | |
| 1c51ed4f | 14 | #include <linux/smp.h> |
| cc61591e MD |
15 | #include <asm/cacheflush.h> |
| 16 | #include <asm/smp_plat.h> | |
| 17 | #include <mach/common.h> | |
| 1c51ed4f | 18 | |
| a62580e5 | 19 | void __init shmobile_smp_init_cpus(unsigned int ncores) |
| 1c51ed4f | 20 | { |
| 1c51ed4f MD |
21 | unsigned int i; |
| 22 | ||
| a06f916b RK |
23 | if (ncores > nr_cpu_ids) { |
| 24 | pr_warn("SMP: %u cores greater than maximum (%u), clipping\n", | |
| 25 | ncores, nr_cpu_ids); | |
| 26 | ncores = nr_cpu_ids; | |
| 27 | } | |
| 28 | ||
| 1c51ed4f MD |
29 | for (i = 0; i < ncores; i++) |
| 30 | set_cpu_possible(i, true); | |
| 31 | } | |
| cc61591e MD |
32 | |
| 33 | extern unsigned long shmobile_smp_fn[]; | |
| 34 | extern unsigned long shmobile_smp_arg[]; | |
| 35 | extern unsigned long shmobile_smp_mpidr[]; | |
| 36 | ||
| 37 | void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg) | |
| 38 | { | |
| 39 | shmobile_smp_fn[cpu] = 0; | |
| 40 | flush_cache_all(); | |
| 41 | ||
| 42 | shmobile_smp_mpidr[cpu] = cpu_logical_map(cpu); | |
| 43 | shmobile_smp_fn[cpu] = fn; | |
| 44 | shmobile_smp_arg[cpu] = arg; | |
| 45 | flush_cache_all(); | |
| 46 | } |