nuttx/configs/stm32f4discovery/src/stm32_boot.c

/****************************************************************************
 * configs/stm32f4discovery/src/stm32_boot.c
 *
 *   Copyright (C) 2011-2012, 2015, 2018 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * 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.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * 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.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <debug.h>

#include <nuttx/board.h>
#include <arch/board/board.h>

#include "up_arch.h"
#include "itm.h"

#include "stm32.h"
#include "stm32f4discovery.h"

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: stm32_boardinitialize
 *
 * Description:
 *   All STM32 architectures must provide the following entry point.  This
 *   entry point is called early in the initialization -- after all memory
 *   has been configured and mapped but before any devices have been
 *   initialized.
 *
 ****************************************************************************/

void stm32_boardinitialize(void)
{
#ifdef CONFIG_SCHED_CRITMONITOR
  /* Make sure the high speed cycle counter is running.  It will be started
   * automatically only if a debugger is connected.
   */

  putreg32(0xc5acce55, ITM_LAR);
  modifyreg32(DWT_CTRL, 0, DWT_CTRL_CYCCNTENA_MASK);
#endif

#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
  /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak
   * function stm32_spidev_initialize() has been brought into the link.
   */

  if (stm32_spidev_initialize)
    {
      stm32_spidev_initialize();
    }
#endif

#ifdef CONFIG_STM32_OTGFS
  /* Initialize USB if the 1) OTG FS controller is in the configuration and 2)
   * disabled, and 3) the weak function stm32_usbinitialize() has been brought
   * into the build. Presumably either CONFIG_USBDEV or CONFIG_USBHOST is also
   * selected.
   */

  if (stm32_usbinitialize)
    {
      stm32_usbinitialize();
    }
#endif

#ifdef HAVE_NETMONITOR
  /* Configure board resources to support networking. */

  if (stm32_netinitialize)
    {
      stm32_netinitialize();
    }
#endif

#ifdef CONFIG_ARCH_LEDS
  /* Configure on-board LEDs if LED support has been selected. */

  board_autoled_initialize();
#endif
}

/****************************************************************************
 * Name: board_late_initialize
 *
 * Description:
 *   If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
 *   initialization call will be performed in the boot-up sequence to a
 *   function called board_late_initialize().  board_late_initialize() will be
 *   called immediately after up_initialize() is called and just before the
 *   initial application is started.  This additional initialization phase
 *   may be used, for example, to initialize board-specific device drivers.
 *
 ****************************************************************************/

#ifdef CONFIG_BOARD_LATE_INITIALIZE
void board_late_initialize(void)
{
  /* Perform board-specific initialization */

  (void)stm32_bringup();
}
#endif