arch/arm/mach-highbank/hotplug.c

   1 /*
   2  * Copyright 2011 Calxeda, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16 #include <linux/kernel.h>
  17
  18 #include <asm/cacheflush.h>
  19
  20 #include "core.h"
  21 #include "sysregs.h"
  22
  23 extern void secondary_startup(void);
  24
  25 /*
  26  * platform-specific code to shutdown a CPU
  27  *
  28  */
  29 void __ref highbank_cpu_die(unsigned int cpu)
  30 {
  31         flush_cache_all();
  32
  33         highbank_set_cpu_jump(cpu, phys_to_virt(0));
  34         highbank_set_core_pwr();
  35
  36         cpu_do_idle();
  37
  38         /* We should never return from idle */
  39         panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu);
  40 }