104 lines
3.9 KiB
C
104 lines
3.9 KiB
C
/****************************************************************************
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* boards/risc-v/litex/arty_a7/src/litex_appinit.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 <stdbool.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <errno.h>
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#include <nuttx/board.h>
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#include "litex.h"
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#include "arty_a7.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_app_initialize
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*
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* Description:
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* Perform architecture specific initialization
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*
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* Input Parameters:
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* arg - The boardctl() argument is passed to the board_app_initialize()
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* implementation without modification. The argument has no
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* meaning to NuttX; the meaning of the argument is a contract
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* between the board-specific initialization logic and the
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* matching application logic. The value could be such things as a
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* mode enumeration value, a set of DIP switch switch settings, a
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* pointer to configuration data read from a file or serial FLASH,
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* or whatever you would like to do with it. Every implementation
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* should accept zero/NULL as a default configuration.
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*
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* Returned Value:
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* Zero (OK) is returned on success; a negated errno value is returned on
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* any failure to indicate the nature of the failure.
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*
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****************************************************************************/
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int board_app_initialize(uintptr_t arg)
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{
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#ifdef CONFIG_BOARD_LATE_INITIALIZE
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/* Board initialization already performed by board_late_initialize() */
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return OK;
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#else
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/* Perform board-specific initialization */
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return litex_bringup();
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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
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* be called after up_initialize() and board_early_initialize() and just
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* before the initial application is started. This additional
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* initialization phase may be used, for example, to initialize board-
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* specific device drivers for which board_early_initialize() is not
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* suitable.
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*
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* Waiting for events, use of I2C, SPI, etc are permissible in the context
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* of board_late_initialize(). That is because board_late_initialize()
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* will run on a temporary, internal kernel thread.
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*
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****************************************************************************/
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void board_late_initialize(void)
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{
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#ifdef CONFIG_LITEX_APPLICATION_RAMDISK
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litex_mount_ramdisk();
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#endif
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litex_bringup();
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}
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