/****************************************************************************
*
* Copyright (C) 2013 PX4 Development Team. All rights reserved.
* Author: Lorenz Meier <lm@inf.ethz.ch>
*
* 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 PX4 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.
*
****************************************************************************/
/**
* @file ramtron.c
*
* ramtron service and utility app.
*/
#include <nuttx/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mount.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <nuttx/spi.h>
#include <nuttx/mtd.h>
#include <nuttx/fs/nxffs.h>
#include <nuttx/fs/ioctl.h>
#include <arch/board/board.h>
#include "systemlib/systemlib.h"
#include "systemlib/param/param.h"
#include "systemlib/err.h"
__EXPORT int ramtron_main(int argc, char *argv[]);
#ifndef CONFIG_MTD_RAMTRON
/* create a fake command with decent message to not confuse users */
int ramtron_main(int argc, char *argv[])
{
errx(1, "RAMTRON not enabled, skipping.");
}
#else
static void ramtron_attach(void);
static void ramtron_start(void);
static void ramtron_erase(void);
static void ramtron_ioctl(unsigned operation);
static void ramtron_save(const char *name);
static void ramtron_load(const char *name);
static void ramtron_test(void);
static bool attached = false;
static bool started = false;
static struct mtd_dev_s *ramtron_mtd;
int ramtron_main(int argc, char *argv[])
{
if (argc >= 2) {
if (!strcmp(argv[1], "start"))
ramtron_start();
if (!strcmp(argv[1], "save_param"))
ramtron_save(argv[2]);
if (!strcmp(argv[1], "load_param"))
ramtron_load(argv[2]);
if (!strcmp(argv[1], "erase"))
ramtron_erase();
if (!strcmp(argv[1], "test"))
ramtron_test();
if (0) { /* these actually require a file on the filesystem... */
if (!strcmp(argv[1], "reformat"))
ramtron_ioctl(FIOC_REFORMAT);
if (!strcmp(argv[1], "repack"))
ramtron_ioctl(FIOC_OPTIMIZE);
}
}
errx(1, "expected a command, try 'start'\n\t'save_param /ramtron/parameters'\n\t'load_param /ramtron/parameters'\n\t'erase'\n");
}
struct mtd_dev_s *ramtron_initialize(FAR struct spi_dev_s *dev);
static void
ramtron_attach(void)
{
/* find the right spi */
struct spi_dev_s *spi = up_spiinitialize(2);
/* this resets the spi bus, set correct bus speed again */
// xxx set in ramtron driver, leave this out
// SPI_SETFREQUENCY(spi, 4000000);
SPI_SETFREQUENCY(spi, 375000000);
SPI_SETBITS(spi, 8);
SPI_SETMODE(spi, SPIDEV_MODE3);
SPI_SELECT(spi, SPIDEV_FLASH, false);
if (spi == NULL)
errx(1, "failed to locate spi bus");
/* start the MTD driver, attempt 5 times */
for (int i = 0; i < 5; i++) {
ramtron_mtd = ramtron_initialize(spi);
if (ramtron_mtd) {
/* abort on first valid result */
if (i > 0) {
warnx("warning: ramtron needed %d attempts to attach", i+1);
}
break;
}
}
/* if last attempt is still unsuccessful, abort */
if (ramtron_mtd == NULL)
errx(1, "failed to initialize ramtron driver");
attached = true;
}
static void
ramtron_start(void)
{
int ret;
if (started)
errx(1, "ramtron already mounted");
if (!attached)
ramtron_attach();
/* start NXFFS */
ret = nxffs_initialize(ramtron_mtd);
if (ret < 0)
errx(1, "failed to initialize NXFFS - erase ramtron to reformat");
/* mount the ramtron */
ret = mount(NULL, "/ramtron", "nxffs", 0, NULL);
if (ret < 0)
errx(1, "failed to mount /ramtron - erase ramtron to reformat");
started = true;
warnx("mounted ramtron at /ramtron");
exit(0);
}
//extern int at24c_nuke(void);
static void
ramtron_erase(void)
{
if (!attached)
ramtron_attach();
// if (at24c_nuke())
errx(1, "erase failed");
errx(0, "erase done, reboot now");
}
static void
ramtron_ioctl(unsigned operation)
{
int fd;
fd = open("/ramtron/.", 0);
if (fd < 0)
err(1, "open /ramtron");
if (ioctl(fd, operation, 0) < 0)
err(1, "ioctl");
exit(0);
}
static void
ramtron_save(const char *name)
{
if (!started)
errx(1, "must be started first");
if (!name)
err(1, "missing argument for device name, try '/ramtron/parameters'");
warnx("WARNING: 'ramtron save_param' deprecated - use 'param save' instead");
/* delete the file in case it exists */
unlink(name);
/* create the file */
int fd = open(name, O_WRONLY | O_CREAT | O_EXCL);
if (fd < 0)
err(1, "opening '%s' failed", name);
int result = param_export(fd, false);
close(fd);
if (result < 0) {
unlink(name);
errx(1, "error exporting to '%s'", name);
}
exit(0);
}
static void
ramtron_load(const char *name)
{
if (!started)
errx(1, "must be started first");
if (!name)
err(1, "missing argument for device name, try '/ramtron/parameters'");
warnx("WARNING: 'ramtron load_param' deprecated - use 'param load' instead");
int fd = open(name, O_RDONLY);
if (fd < 0)
err(1, "open '%s'", name);
int result = param_load(fd);
close(fd);
if (result < 0)
errx(1, "error importing from '%s'", name);
exit(0);
}
//extern void at24c_test(void);
static void
ramtron_test(void)
{
// at24c_test();
exit(0);
}
#endif
