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kernel/linux-imx6_3.14.28/arch/arm/mach-keystone/platsmp.c 1.03 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Keystone SOC SMP platform code
   *
   * Copyright 2013 Texas Instruments, Inc.
   *	Cyril Chemparathy <cyril@ti.com>
   *	Santosh Shilimkar <santosh.shillimkar@ti.com>
   *
   * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   */
  
  #include <linux/init.h>
  #include <linux/smp.h>
  #include <linux/io.h>
  
  #include <asm/smp_plat.h>
  
  #include "keystone.h"
  
  static int keystone_smp_boot_secondary(unsigned int cpu,
  						struct task_struct *idle)
  {
  	unsigned long start = virt_to_phys(&secondary_startup);
  	int error;
  
  	pr_debug("keystone-smp: booting cpu %d, vector %08lx
  ",
  		 cpu, start);
  
  	error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start);
  	if (error)
  		pr_err("CPU %d bringup failed with %d
  ", cpu, error);
  
  	return error;
  }
  
  struct smp_operations keystone_smp_ops __initdata = {
  	.smp_boot_secondary	= keystone_smp_boot_secondary,
  };