diff options
Diffstat (limited to 'nuttx/drivers/mtd/flash_eraseall.c')
-rw-r--r-- | nuttx/drivers/mtd/flash_eraseall.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/nuttx/drivers/mtd/flash_eraseall.c b/nuttx/drivers/mtd/flash_eraseall.c new file mode 100644 index 000000000..77666ff03 --- /dev/null +++ b/nuttx/drivers/mtd/flash_eraseall.c @@ -0,0 +1,117 @@ +/**************************************************************************** + * drivers/mtd/flash_eraseall.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 NuttX 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <errno.h> +#include <debug.h> + +#include <nuttx/fs/fs.h> +#include <nuttx/fs/ioctl.h> +#include <nuttx/mtd.h> + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: flash_eraseall + * + * Description: + * Call a block driver with the MDIOC_BULKERASE ioctl command. This will + * cause the MTD driver to erase all of the flash. + * + ****************************************************************************/ + +int flash_eraseall(FAR const char *driver) +{ + FAR struct inode *inode; + FAR const struct block_operations *ops; + int ret; + + /* Open the block driver */ + + ret = open_blockdriver(driver ,0, &inode); + if (ret < 0) + { + fdbg("ERROR: Failed to open '%s': %d\n", driver, ret); + return ret; + } + + /* Get the block operations */ + + ops = inode->u.i_bops; + + /* Invoke the block driver ioctl method */ + + ret = -EPERM; + if (ops->ioctl) + { + ret = ops->ioctl(inode, MTDIOC_BULKERASE, 0); + if (ret < 0) + { + fdbg("ERROR: MTD ioctl(%04x) failed: %d\n", MTDIOC_BULKERASE, ret); + } + } + + /* Close the block driver */ + + close_blockdriver(inode); + return ret; +} |