From f4fc3bbd571ce99b707d326a206159a6eab49547 Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Sun, 28 Jul 2013 14:10:37 +0200 Subject: Added RAMTRON device, updated diagrams --- src/systemcmds/ramtron/module.mk | 6 + src/systemcmds/ramtron/ramtron.c | 279 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 285 insertions(+) create mode 100644 src/systemcmds/ramtron/module.mk create mode 100644 src/systemcmds/ramtron/ramtron.c (limited to 'src/systemcmds/ramtron') diff --git a/src/systemcmds/ramtron/module.mk b/src/systemcmds/ramtron/module.mk new file mode 100644 index 000000000..e4eb1d143 --- /dev/null +++ b/src/systemcmds/ramtron/module.mk @@ -0,0 +1,6 @@ +# +# RAMTRON file system driver +# + +MODULE_COMMAND = ramtron +SRCS = ramtron.c diff --git a/src/systemcmds/ramtron/ramtron.c b/src/systemcmds/ramtron/ramtron.c new file mode 100644 index 000000000..03c713987 --- /dev/null +++ b/src/systemcmds/ramtron/ramtron.c @@ -0,0 +1,279 @@ +/**************************************************************************** + * + * Copyright (C) 2013 PX4 Development Team. All rights reserved. + * Author: Lorenz Meier + * + * 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 + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include + +#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 -- cgit v1.2.3