/****************************************************************************
* arch/z80/src/common/up_initialize.c
*
* Copyright (C) 2007-2009, 2012-2013 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/fs/fs.h>
#include <arch/board/board.h>
#include "chip/switch.h"
#include "up_arch.h"
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_calibratedelay
*
* Description:
* Delay loops are provided for short timing loops. This function, if
* enabled, will just wait for 100 seconds. Using a stopwatch, you can
* can then determine if the timing loops are properly calibrated.
*
****************************************************************************/
#if defined(CONFIG_ARCH_CALIBRATION) && defined(CONFIG_DEBUG)
static void up_calibratedelay(void)
{
int i;
lldbg("Beginning 100s delay\n");
for (i = 0; i < 100; i++)
{
up_mdelay(1000);
}
lldbg("End 100s delay\n");
}
#else
# define up_calibratedelay()
#endif
/****************************************************************************
* 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 */
INIT_IRQCONTEXT();
/* Calibrate the timing loop */
up_calibratedelay();
/* Add any extra memory fragments to the memory manager */
#if CONFIG_MM_REGIONS > 1
up_addregion();
#endif
/* Initialize the interrupt subsystem */
up_irqinitialize();
/* Initialize the system timer interrupt */
#if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
up_timer_initialize();
#endif
/* Initialize the CPU for those that use it (only for the Z180). This
* needs to be done before any tasks are created).
*/
#if CONFIG_ARCH_ADDRENV
(void)up_mmuinit();
#endif
/* Register devices */
#if CONFIG_NFILE_DESCRIPTORS > 0
#if defined(CONFIG_DEV_NULL)
devnull_register(); /* Standard /dev/null */
#endif
#if defined(CONFIG_DEV_ZERO)
devzero_register(); /* Standard /dev/zero */
#endif
#endif /* CONFIG_NFILE_DESCRIPTORS */
/* 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_SYSLOG_CONSOLE)
syslog_console_init();
#elif defined(CONFIG_RAMLOG_CONSOLE)
ramlog_consoleinit();
#endif
/* Initialize the netwok */
up_netinitialize();
board_led_on(LED_IRQSENABLED);
}
