arch/arm/mach-bcm283x/reset.c

   1 /*
   2  * (C) Copyright 2012 Stephen Warren
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <common.h>
  18 #include <asm/io.h>
  19 #include <asm/arch/wdog.h>
  20
  21 #define RESET_TIMEOUT 10
  22
  23 void reset_cpu(ulong addr)
  24 {
  25         struct bcm2835_wdog_regs *regs =
  26                 (struct bcm2835_wdog_regs *)BCM2835_WDOG_PHYSADDR;
  27         uint32_t rstc;
  28
  29         rstc = readl(&regs->rstc);
  30         rstc &= ~BCM2835_WDOG_RSTC_WRCFG_MASK;
  31         rstc |= BCM2835_WDOG_RSTC_WRCFG_FULL_RESET;
  32
  33         writel(BCM2835_WDOG_PASSWORD | RESET_TIMEOUT, &regs->wdog);
  34         writel(BCM2835_WDOG_PASSWORD | rstc, &regs->rstc);
  35 }