text: /****************************************************************************
   * arch/hc/src/common/up_initialize.c
   *
   *   Copyright (C) 2009-2010, 2012-2013, 2015-2017 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/arch.h>
  #include <nuttx/board.h>
  #include <nuttx/sched_note.h>
  #include <nuttx/mm/iob.h>
  #include <nuttx/drivers/drivers.h>
  #include <nuttx/fs/loop.h>
  #include <nuttx/net/loopback.h>
  #include <nuttx/net/tun.h>
  #include <nuttx/net/telnet.h>
  #include <nuttx/syslog/syslog.h>
  #include <nuttx/syslog/syslog_console.h>
  #include <nuttx/serial/pty.h>
  #include <nuttx/crypto/crypto.h>
  #include <nuttx/power/pm.h>
  
  #include "up_arch.h"
  #include "up_internal.h"
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: up_initialize
   *
   * Description:
   *   up_initialize will be called once during OS initialization after the
   *   basic OS services have been initialized.  The architecture specific
   *   details of initializing the OS will be handled here.  Such things as
   *   setting up interrupt service routines, starting the clock, and
   *   registering device drivers are some of the things that are different
   *   for each processor and hardware platform.
   *
   *   up_initialize is called after the OS initialized but before the user
   *   initialization logic has been started and before the libraries have
   *   been initialized.  OS services and driver services are available.
   *
   ****************************************************************************/
  
  void up_initialize(void)
  {
    /* Initialize global variables */
  
    g_current_regs = NULL;
  
    /* Add any extra memory fragments to the memory manager */
  
    up_addregion();
  
    /* Initialize the interrupt subsystem */
  
    up_irqinitialize();
  
    /* Initialize the system timer interrupt */
  
  #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
    hc_timer_initialize();
  #endif
  
  #ifdef CONFIG_PM
    /* Initialize the power management subsystem.  This MCU-specific function
     * must be called *very* early in the initialization sequence *before* any
     * other device drivers are initialized (since they may attempt to register
     * with the power management subsystem).
     */
  
    up_pminitialize();
  #endif
  
  #ifdef CONFIG_ARCH_DMA
    /* Initialize the DMA subsystem if the weak function up_dma_initialize has been
     * brought into the build
     */
  
  #ifdef CONFIG_HAVE_WEAKFUNCTIONS
    if (up_dma_initialize)
  #endif
      {
        up_dma_initialize();
      }
  #endif
  
  #ifdef CONFIG_MM_IOB
    /* Initialize IO buffering */
  
    iob_initialize();
  #endif
  
  #if CONFIG_NFILE_DESCRIPTORS > 0
    /* Register devices */
  
  #if defined(CONFIG_DEV_NULL)
    devnull_register();   /* Standard /dev/null */
  #endif
  
  #if defined(CONFIG_DEV_RANDOM)
    devrandom_register(); /* Standard /dev/random */
  #endif
  
  #if defined(CONFIG_DEV_URANDOM)
    devurandom_register();   /* Standard /dev/urandom */
  #endif
  
  #if defined(CONFIG_DEV_ZERO)
    devzero_register();   /* Standard /dev/zero */
  #endif
  
  #if defined(CONFIG_DEV_LOOP)
    loop_register();      /* Standard /dev/loop */
  #endif
  #endif /* CONFIG_NFILE_DESCRIPTORS */
  
  #if defined(CONFIG_SCHED_INSTRUMENTATION_BUFFER) && \
      defined(CONFIG_DRIVER_NOTE)
    note_register();      /* Non-standard /dev/note */
  #endif
  
    /* Initialize the serial device driver */
  
  #ifdef USE_SERIALDRIVER
    up_serialinit();
  #endif
  
    /* Initialize the console device driver (if it is other than the standard
     * serial driver).
     */
  
  #if defined(CONFIG_DEV_LOWCONSOLE)
    lowconsole_init();
  #elif defined(CONFIG_CONSOLE_SYSLOG)
    syslog_console_init();
  #elif defined(CONFIG_RAMLOG_CONSOLE)
    ramlog_consoleinit();
  #endif
  
  #if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_PSEUDOTERM_SUSV1)
    /* Register the master pseudo-terminal multiplexor device */
  
    (void)ptmx_register();
  #endif
  
    /* Early initialization of the system logging device.  Some SYSLOG channel
     * can be initialized early in the initialization sequence because they
     * depend on only minimal OS initialization.
     */
  
    syslog_initialize(SYSLOG_INIT_EARLY);
  
  #if defined(CONFIG_CRYPTO)
    /* Initialize the HW crypto and /dev/crypto */
  
    up_cryptoinitialize();
  #endif
  
  #if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_CRYPTO_CRYPTODEV)
    devcrypto_register();
  #endif
  
  #ifndef CONFIG_NETDEV_LATEINIT
    /* Initialize the network */
  
    up_netinitialize();
  #endif
  
  #ifdef CONFIG_NETDEV_LOOPBACK
    /* Initialize the local loopback device */
  
    (void)localhost_initialize();
  #endif
  
  #ifdef CONFIG_NET_TUN
    /* Initialize the TUN device */
  
    (void)tun_initialize();
  #endif
  
  #ifdef CONFIG_NETDEV_TELNET
    /* Initialize the Telnet session factory */
  
    (void)telnet_initialize();
  #endif
  
    /* Initialize USB */
  
    up_usbinitialize();
  
    board_autoled_on(LED_IRQSENABLED);
  }
  