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/************************************************************************************
* configs/sama5d3-xplained/src/sam_boot.c
*
* Copyright (C) 2014 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 "sam_sckc.h"
#include "sama5d3-xplained.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_boardinitialize
*
* Description:
* All SAMA5 architectures must provide the following entry point. This entry
* point is called early in the intitialization -- after all memory has been
* configured and mapped but before any devices have been initialized.
*
************************************************************************************/
void sam_boardinitialize(void)
{
#ifdef CONFIG_SAMA5D3XPLAINED_SLOWCLOCK
/* Enable the external slow clock */
sam_sckc_enable(true);
#endif
/* Configure SPI chip selects if 1) SPI is enable, and 2) the weak function
* sam_spiinitialize() has been brought into the link.
*/
#if defined(CONFIG_SAMA5_SPI0) || defined(CONFIG_SAMA5_SPI1)
if (sam_spiinitialize)
{
sam_spiinitialize();
}
#endif
#if defined(CONFIG_SAMA5_DDRCS) && !defined(CONFIG_SAMA5_BOOT_SDRAM)
/* Configure SDRAM if (1) SDRAM has been enalbled in the NuttX configuration and
* (2) if we are not currently running out of SDRAM. If we are now running out
* of SDRAM then we have to assume that some second level bootloader has properly
* configured SDRAM for our use.
*/
sam_sdram_config();
#endif
/* Initialize USB if the 1) the HS host or device controller is in the
* configuration and 2) the weak function sam_usbinitialize() has been brought
* into the build. Presumeably either CONFIG_USBDEV or CONFIG_USBHOST is also
* selected.
*/
#if defined(CONFIG_SAMA5_UHPHS) || defined(CONFIG_SAMA5_UDPHS)
if (sam_usbinitialize)
{
sam_usbinitialize();
}
#endif
/* Configure board resources to support networkingif the 1) networking is enabled,
* 2) the EMAC or GMAC module is enabled, and 2) the weak function
* sam_netinitialize() has been brought into the build.
*/
#ifdef HAVE_NETWORK
if (sam_netinitialize)
{
sam_netinitialize();
}
#endif
#ifdef CONFIG_ARCH_LEDS
/* Configure on-board LEDs if LED support has been selected. */
board_led_initialize();
#endif
}
/****************************************************************************
* Name: board_initialize
*
* Description:
* If CONFIG_BOARD_INITIALIZE is selected, then an additional
* initialization call will be performed in the boot-up sequence to a
* function called board_initialize(). board_initialize() will be
* called immediately after up_intiialize() 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_INITIALIZE
void board_initialize(void)
{
/* Perform NSH initialization here instead of from the NSH. This
* alternative NSH initialization is necessary when NSH is ran in user-space
* but the initialization function must run in kernel space.
*/
#if defined(CONFIG_NSH_LIBRARY) && !defined(CONFIG_NSH_ARCHINIT)
(void)nsh_archinitialize();
#endif
}
#endif /* CONFIG_BOARD_INITIALIZE */
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