Blame view

kernel/linux-imx6_3.14.28/arch/arm/mach-shmobile/platsmp.c 1002 Bytes
6b13f685e   김민수   BSP 최초 추가
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
  /*
   * 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 <mach/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
  int shmobile_smp_cpu_disable(unsigned int cpu)
  {
  	return 0; /* Hotplug of any CPU is supported */
  }
  #endif