source: rtems/bsps/arm/atsam/start/restart.c @ 6fc04f4c

/* SPDX-License-Identifier: BSD-2-Clause */

/*
 * Copyright (c) 2017 embedded brains GmbH.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <rtems.h>
#include <rtems/score/armv7m.h>
#include <bsp.h>

static void ARMV7M_Systick_cleanup(void)
{
  volatile ARMV7M_Systick *systick = _ARMV7M_Systick;
  systick->csr = 0;
}

void bsp_restart( const void *const addr )
{
  rtems_interrupt_level level;
  void(*start)(void) = (void(*)(void))(addr);

  rtems_interrupt_disable(level);
  (void)level;
  rtems_cache_disable_instruction();
  rtems_cache_disable_data();
  rtems_cache_invalidate_entire_instruction();
  rtems_cache_invalidate_entire_data();
  ARMV7M_Systick_cleanup();

  start();
}