Add a flash_eraseall() function
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3918 42af7a65-404d-4744-a932-0658087f49c3
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@ -2036,3 +2036,8 @@
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* Scripts/makefiles/documents. Several adjustments, corrections and
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typo fixes so that NuttX will build correctly on FreeBSD using the
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ASH shell (submitted by Kurt Lidl).
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* drivers/mtd/flash_eraseall.c: Add a callable function that accepts
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the path to a block driver and then erases the underlying FLASH memory
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(assuming that the block driver is an MTD driver wrapped in the FTL
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layer).
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@ -36,7 +36,7 @@
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# Include MTD drivers
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CSRCS += ftl.c m25px.c at45db.c ramtron.c rammtd.c
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CSRCS += at45db.c flash_eraseall.c ftl.c m25px.c rammtd.c ramtron.c
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# Include MTD driver support
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113
drivers/mtd/flash_eraseall.c
Executable file
113
drivers/mtd/flash_eraseall.c
Executable file
@ -0,0 +1,113 @@
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/****************************************************************************
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* drivers/mtd/flash_eraseall.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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 <errno.h>
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#include <debug.h>
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#include <nuttx/fs.h>
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#include <nuttx/ioctl.h>
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#include <nuttx/mtd.h>
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/****************************************************************************
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* Private Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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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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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: flash_eraseall
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*
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* Description:
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* Call a block driver with the MDIOC_BULKERASE ioctl command. This will
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* cause the MTD driver to erase all of the flash.
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*
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****************************************************************************/
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int flash_eraseall(FAR const char *driver)
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{
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FAR struct inode *inode;
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FAR const struct block_operations *ops;
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int ret;
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/* Open the block driver */
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ret = open_blockdriver(driver ,0, &inode);
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if (ret < 0)
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{
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fdbg("ERROR: Failed to open '%s': %d\n", driver, ret);
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return ret;
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}
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/* Get the block operations */
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ops = inode->u.i_bops;
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/* Invoke the block driver ioctl method */
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ret = -EPERM;
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if (ops->ioctl)
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{
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ret = ops->ioctl(inode, MTDIOC_BULKERASE, 0);
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}
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/* Close the block driver */
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close_blockdriver(inode);
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return ret;
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}
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@ -420,21 +420,46 @@ static int ftl_geometry(FAR struct inode *inode, struct geometry *geometry)
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static int ftl_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
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{
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struct ftl_struct_s *dev ;
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int ret = -ENOTTY;
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int ret;
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fvdbg("Entry\n");
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/* Only one ioctl command is supported (and that is just passed on to MTD */
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DEBUGASSERT(inode && inode->i_private);
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if (cmd == BIOC_XIPBASE && arg != 0)
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/* Only one block driver ioctl command is supported by this driver (and
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* that command is just passed on to the MTD driver in a slightly
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* different form).
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*/
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if (cmd == BIOC_XIPBASE)
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{
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dev = (struct ftl_struct_s *)inode->i_private;
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ret = MTD_IOCTL(dev->mtd, MTDIOC_XIPBASE, arg);
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if (ret < 0)
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/* The argument accompanying the BIOC_XIPBASE should be non-NULL. If
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* DEBUG is enabled, we will catch it here instead of in the MTD
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* driver.
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*/
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#ifdef CONFIG_DEBUG
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if (arg == 0)
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{
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fdbg("MTD ioctl(MTDIOC_XIPBASE) failed: %d\n", ret);
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fdbg("ERROR: BIOC_XIPBASE argument is NULL\n");
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return -EINVAL;
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}
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#endif
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/* Just change the BIOC_XIPBASE command to the MTDIOC_XIPBASE command. */
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cmd = MTDIOC_XIPBASE;
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}
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/* No other block driver ioctl commmands are not recognized by this
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* driver. Other possible MTD driver ioctl commands are passed through
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* to the MTD driver (unchanged).
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*/
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dev = (struct ftl_struct_s *)inode->i_private;
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ret = MTD_IOCTL(dev->mtd, cmd, arg);
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if (ret < 0)
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{
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fdbg("ERROR: MTD ioctl(%04x) failed: %d\n", cmd, ret);
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}
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return ret;
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@ -147,6 +147,17 @@ extern "C" {
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EXTERN int ftl_initialize(int minor, FAR struct mtd_dev_s *mtd);
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/****************************************************************************
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* Name: flash_eraseall
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*
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* Description:
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* Call a block driver with the MDIOC_BULKERASE ioctl command. This will
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* cause the MTD driver to erase all of the flash.
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*
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****************************************************************************/
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EXTERN int flash_eraseall(FAR const char *driver);
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/****************************************************************************
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* Name: rammtd_initialize
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*
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