arch/arm/mach-omap2/omap3-restart.c

   1 /*
   2  * omap3-restart.c - Code common to all OMAP3xxx machines.
   3  *
   4  * Copyright (C) 2009, 2012 Texas Instruments
   5  * Copyright (C) 2010 Nokia Corporation
   6  * Tony Lindgren <tony@atomide.com>
   7  * Santosh Shilimkar <santosh.shilimkar@ti.com>
   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/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/reboot.h>
  16
  17 #include "iomap.h"
  18 #include "common.h"
  19 #include "control.h"
  20 #include "prm3xxx.h"
  21
  22 /* Global address base setup code */
  23
  24 /**
  25  * omap3xxx_restart - trigger a software restart of the SoC
  26  * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
  27  * @cmd: passed from the userspace program rebooting the system (if provided)
  28  *
  29  * Resets the SoC.  For @cmd, see the 'reboot' syscall in
  30  * kernel/sys.c.  No return value.
  31  */
  32 void omap3xxx_restart(enum reboot_mode mode, const char *cmd)
  33 {
  34         omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
  35         omap3xxx_prm_dpll3_reset(); /* never returns */
  36         while (1);
  37 }