LXR uboot/arch/arm/mach-at91/armv7/reset.c

   1/*
   2 * (C) Copyright 2007-2008
   3 * Stelian Pop <stelian@popies.net>
   4 * Lead Tech Design <www.leadtechdesign.com>
   5 *
   6 * (C) Copyright 2013
   7 * Bo Shen <voice.shen@atmel.com>
   8 *
   9 * SPDX-License-Identifier:     GPL-2.0+
  10 */
  11
  12#include <common.h>
  13#include <asm/io.h>
  14#include <asm/arch/hardware.h>
  15#include <asm/arch/at91_rstc.h>
  16
  17/* Reset the cpu by telling the reset controller to do so */
  18void reset_cpu(ulong ignored)
  19{
  20        at91_rstc_t *rstc = (at91_rstc_t *)ATMEL_BASE_RSTC;
  21
  22        writel(AT91_RSTC_KEY
  23                | AT91_RSTC_CR_PROCRST  /* Processor Reset */
  24                | AT91_RSTC_CR_PERRST   /* Peripheral Reset */
  25#ifdef CONFIG_AT91RESET_EXTRST
  26                | AT91_RSTC_CR_EXTRST   /* External Reset (assert nRST pin) */
  27#endif
  28                , &rstc->cr);
  29        /* never reached */
  30        do { } while (1);
  31}
  32