150 lines
4.9 KiB
C
150 lines
4.9 KiB
C
/****************************************************************************
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* boards/arm/sama5/sama5d3x-ek/src/sam_boot.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include <nuttx/board.h>
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#include "sam_sckc.h"
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#include "sama5d3x-ek.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_boardinitialize
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*
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* Description:
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* All SAMA5 architectures must provide the following entry point.
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* This entry point is called early in the initialization -- after all
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* memory has been configured and mapped but before any devices have been
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* initialized.
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*
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****************************************************************************/
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void sam_boardinitialize(void)
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{
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#ifdef CONFIG_SAMA5D3XEK_SLOWCLOCK
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/* Enable the external slow clock */
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sam_sckc_enable(true);
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#endif
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/* Configure SPI chip selects if 1) SPI is enable, and 2) the weak function
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* sam_spidev_initialize() has been brought into the link.
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*/
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#if defined(CONFIG_SAMA5_SPI0) || defined(CONFIG_SAMA5_SPI1)
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if (sam_spidev_initialize)
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{
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sam_spidev_initialize();
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}
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#endif
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#if defined(CONFIG_SAMA5_DDRCS) && !defined(CONFIG_SAMA5_BOOT_SDRAM)
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/* Configure SDRAM if
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* (1) SDRAM has been enabled in the NuttX configuration and
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* (2) if we are not currently running out of SDRAM.
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* If we are now running out of SDRAM then we have to assume that some
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* second level bootloader has properly configured SDRAM for our use.
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*/
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sam_sdram_config();
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#endif
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/* Initialize USB if the
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* 1) the HS host or device controller is in the configuration and
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* 2) the weak function sam_usbinitialize() has been brought
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* into the build.
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* Presumeably either CONFIG_USBDEV or CONFIG_USBHOST is also selected.
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*/
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#if defined(CONFIG_SAMA5_UHPHS) || defined(CONFIG_SAMA5_UDPHS)
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if (sam_usbinitialize)
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{
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sam_usbinitialize();
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}
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#endif
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/* Configure board resources to support networking if the
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* 1) networking is enabled,
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* 2) the EMAC or GMAC module is enabled, and
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* 2) the weak function
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* sam_netinitialize() has been brought into the build.
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*/
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#ifdef HAVE_NETWORK
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if (sam_netinitialize)
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{
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sam_netinitialize();
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}
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#endif
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#ifdef CONFIG_ARCH_LEDS
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/* Configure on-board LEDs if LED support has been selected. */
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board_autoled_initialize();
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#endif
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}
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/****************************************************************************
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* Name: board_late_initialize
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*
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* Description:
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* If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
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* initialization call will be performed in the boot-up sequence to a
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* function called board_late_initialize(). board_late_initialize() will be
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* called immediately after up_initialize() is called and just before the
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* initial application is started. This additional initialization phase
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* may be used, for example, to initialize board-specific device drivers.
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*
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****************************************************************************/
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#ifdef CONFIG_BOARD_LATE_INITIALIZE
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void board_late_initialize(void)
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{
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/* Perform NSH initialization here instead of from the NSH.
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* This alternative NSH initialization is necessary when NSH is ran in
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* user-space but the initialization function must run in kernel space.
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*/
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#if defined(CONFIG_NSH_LIBRARY) && !defined(CONFIG_BOARDCTL)
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board_app_initialize(0);
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#endif
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}
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#endif /* CONFIG_BOARD_LATE_INITIALIZE */
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