nuttx/boards/arm/imxrt/imxrt1064-evk/src/imxrt_boot.c

/****************************************************************************
 * boards/arm/imxrt/imxrt1064-evk/src/imxrt_boot.c
 *
 *   Copyright (C) 2015-2018 Gregory Nutt. All rights reserved.
 *   Authors: Gregory Nutt <gnutt@nuttx.org>
 *            David Sidrane <david_s5@nscdg.com>
 *
 * 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 <nuttx/board.h>
#include <arch/board/board.h>

#include "imxrt_start.h"
#include "imxrt1064-evk.h"
#include "arm_arch.h"
#include "imxrt_flexspi_nor_boot.h"

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

/****************************************************************************
 * Name: imxrt_ocram_initialize
 *
 * Description:
 *   Called off reset vector to reconfigure the flexRAM
 *   and finish the FLASH to RAM Copy.
 *
 ****************************************************************************/

void imxrt_ocram_initialize(void)
{
  const uint32_t *src;
  uint32_t *dest;
  uint32_t regval;

  /* Reallocate 128K of Flex RAM from ITCM to OCRAM
   * Final Configuration is
   *    128 DTCM
   *
   *    128 FlexRAM OCRAM  (202C:0000-202D:ffff)
   *    256 FlexRAM OCRAM  (2028:0000-202B:ffff)
   *    512 System  OCRAM2 (2020:0000-2027:ffff)
   * */

  putreg32(0xaa555555, IMXRT_IOMUXC_GPR_GPR17);
  regval = getreg32(IMXRT_IOMUXC_GPR_GPR16);
  putreg32(regval | GPR_GPR16_FLEXRAM_BANK_CFG_SELF, IMXRT_IOMUXC_GPR_GPR16);

  src = (uint32_t *) (LOCATE_IN_SRC(g_boot_data.start) + g_boot_data.size);
  dest = (uint32_t *) (g_boot_data.start + g_boot_data.size);

  while (dest < (uint32_t *) &_etext)
    {
      *dest++ = *src++;
    }
}

/****************************************************************************
 * Name: imxrt_boardinitialize
 *
 * Description:
 *   All i.MX RT architectures must provide the following entry point.  This
 *   entry point is called early in the initialization -- after clocking and
 *   memory have been configured but before caches have been enabled and
 *   before any devices have been initialized.
 *
 ****************************************************************************/

void imxrt_boardinitialize(void)
{
  /* Configure on-board LEDs if LED support has been selected. */

#ifdef CONFIG_ARCH_LEDS
  imxrt_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_intitialize() 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 initialization */

  imxrt_bringup();
}
#endif /* CONFIG_BOARD_LATE_INITIALIZE */