311 lines
8.8 KiB
C
311 lines
8.8 KiB
C
/****************************************************************************
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* configs/stm32l476vg-disco/src/stm32_appinit.c
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <sys/types.h>
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#include <sys/mount.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 <debug.h>
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#include <string.h>
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#include <stdlib.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <stm32l4.h>
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#include <stm32l4_uart.h>
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#include <arch/board/board.h>
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#include <arch/board/boardctl.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/fs/ramdisk.h>
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#include <nuttx/fs/nxffs.h>
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#include <nuttx/fs/mkfatfs.h>
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#include <nuttx/binfmt/elf.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "stm32l476vg-disco.h"
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/* Conditional logic in stm32l476vg-disco.h will determine if certain features
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* are supported. Tests for these features need to be made after including
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* stm32l476vg-disco.h.
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*/
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#ifdef HAVE_RTC_DRIVER
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# include <nuttx/timers/rtc.h>
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# include "stm32l4_rtc.h"
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#endif
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#if defined(HAVE_N25QXXX)
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# include <nuttx/mtd/mtd.h>
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#endif
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#ifdef HAVE_N25QXXX
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# include <nuttx/spi/qspi.h>
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# include "stm32l4_qspi.h"
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Debug ********************************************************************/
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#ifdef CONFIG_BOARD_INITIALIZE
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# define SYSLOG lldbg
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#else
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# define SYSLOG dbg
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#endif
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/****************************************************************************
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* Private Type Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#ifdef HAVE_N25QXXX
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FAR struct qspi_dev_s *g_qspi;
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FAR struct mtd_dev_s *g_mtd_fs;
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#endif
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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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* Application initialization stub for boardctl()
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*
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****************************************************************************/
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#ifdef CONFIG_LIB_BOARDCTL
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int board_app_initialize(void)
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{
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#ifdef HAVE_RTC_DRIVER
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FAR struct rtc_lowerhalf_s *rtclower;
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#endif
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#if defined(HAVE_N25QXXX)
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FAR struct mtd_dev_s *mtd_temp;
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#endif
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#if defined(HAVE_N25QXXX_CHARDEV)
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char blockdev[18];
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char chardev[12];
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#endif
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int ret;
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(void)ret;
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#ifdef CONFIG_SCHED_INSTRUMENTATION
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/* Configure CPU load estimation */
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cpuload_initialize_once();
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#endif
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#ifdef HAVE_PROC
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/* mount the proc filesystem */
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syslog(LOG_INFO, "Mounting procfs to /proc\n");
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ret = mount(NULL, CONFIG_NSH_PROC_MOUNTPOINT, "procfs", 0, NULL);
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if (ret < 0)
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{
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syslog(LOG_ERR,
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"ERROR: Failed to mount the PROC filesystem: %d (%d)\n",
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ret, errno);
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return ret;
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}
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#endif
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#ifdef HAVE_RTC_DRIVER
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/* Instantiate the STM32 lower-half RTC driver */
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rtclower = stm32l4_rtc_lowerhalf();
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if (!rtclower)
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{
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sdbg("ERROR: Failed to instantiate the RTC lower-half driver\n");
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return -ENOMEM;
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}
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else
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{
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/* Bind the lower half driver and register the combined RTC driver
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* as /dev/rtc0
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*/
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ret = rtc_initialize(0, rtclower);
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if (ret < 0)
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{
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sdbg("ERROR: Failed to bind/register the RTC driver: %d\n", ret);
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return ret;
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}
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}
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#endif
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#ifdef HAVE_N25QXXX
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/* Create an instance of the STM32L4 QSPI device driver */
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g_qspi = stm32l4_qspi_initialize(0);
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if (!g_qspi)
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{
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SYSLOG("ERROR: stm32l4_qspi_initialize failed\n");
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return ret;
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}
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else
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{
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/* Use the QSPI device instance to initialize the
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* N25QXXX device.
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*/
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mtd_temp = n25qxxx_initialize(g_qspi, true);
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if (!mtd_temp)
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{
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SYSLOG("ERROR: n25qxxx_initialize failed\n");
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return ret;
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}
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g_mtd_fs = mtd_temp;
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#ifdef CONFIG_MTD_PARTITION
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/* Setup a partition of 256KiB for our file system. */
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#if defined(CONFIG_N25QXXX_SECTOR512)
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mtd_temp = mtd_partition(g_mtd_fs, 0, 512);
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#else
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mtd_temp = mtd_partition(g_mtd_fs, 0, 64);
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#endif
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if (!g_mtd_fs)
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{
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SYSLOG("ERROR: mtd_partition failed\n");
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return ret;
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}
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g_mtd_fs = mtd_temp;
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#endif
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/* Use the FTL layer to wrap the MTD driver as a block driver */
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ret = ftl_initialize(N25QXXX_MTD_MINOR, g_mtd_fs);
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if (ret < 0)
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{
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SYSLOG("ERROR: Failed to initialize the FTL layer: %d\n", ret);
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return ret;
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}
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/* Use the minor number to create device paths */
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snprintf(blockdev, 18, "/dev/mtdblock%d", N25QXXX_MTD_MINOR);
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snprintf(chardev, 12, "/dev/mtd%d", N25QXXX_MTD_MINOR);
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/* Now create a character device on the block device */
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/* NOTE: for this to work, you will need to make sure that
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* CONFIG_FS_WRITABLE is set in the config. It's not a user-
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* visible setting, but you can make it set by selecting an
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* arbitrary writable file system (you don't have to actually
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* use it, just select it so that the block device created via
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* ftl_initialize() will be writable).
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*/
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ret = bchdev_register(blockdev, chardev, false);
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if (ret < 0)
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{
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SYSLOG("ERROR: bchdev_register %s failed: %d\n", chardev, ret);
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return ret;
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}
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}
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#endif
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return OK;
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}
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#endif /* CONFIG_LIB_BOARDCTL */
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#ifdef CONFIG_BOARDCTL_IOCTL
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int board_ioctl(unsigned int cmd, uintptr_t arg)
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{
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switch(cmd)
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{
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#ifdef HAVE_N25QXXX
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case BIOC_ENTER_MEMMAP:
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{
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struct qspi_meminfo_s meminfo;
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/* Set up the meminfo like a regular memory transaction, many of the fields
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* are not used, the others are to set up for the 'read' command that will
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* automatically be issued by the controller as needed.
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* 6 = CONFIG_N25QXXX_DUMMIES;
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* 0xeb = N25QXXX_FAST_READ_QUADIO;
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*/
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meminfo.flags = QSPIMEM_READ | QSPIMEM_QUADIO;
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meminfo.addrlen = 3;
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meminfo.dummies = 6; //CONFIG_N25QXXX_DUMMIES;
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meminfo.cmd = 0xeb;//N25QXXX_FAST_READ_QUADIO;
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meminfo.addr = 0;
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meminfo.buflen = 0;
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meminfo.buffer = NULL;
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stm32l4_qspi_enter_memorymapped(g_qspi, &meminfo, 80000000);
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}
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break;
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case BIOC_EXIT_MEMMAP:
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stm32l4_qspi_exit_memorymapped(g_qspi);
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break;
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#endif
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default:
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return -EINVAL;
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break;
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}
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return OK;
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}
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#endif
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