+++ /dev/null
-RedBoot FLASH Image System (FIS) Partitions
-===========================================
-
-The FLASH Image System (FIS) directory is a flash description
-format closely associated with the RedBoot boot loader.
-
-It uses one single flash eraseblock in the flash to store an index of
-all images in the flash.
-
-This block size will vary depending on flash but is typically
-32 KB in size.
-
-Required properties:
-- compatible : (required) must be "redboot-fis"
-- fis-index-block : (required) a index to the eraseblock containing
- the FIS directory on this device. On a flash memory with 32KB
- eraseblocks, 0 means the first eraseblock at 0x00000000, 1 means the
- second eraseblock at 0x00008000 and so on.
-
-Example:
-
-flash@0 {
- partitions {
- compatible = "redboot-fis";
- fis-index-block = <0>;
- };
-};
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/redboot-fis.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RedBoot FLASH Image System (FIS) Partitions
+
+description: The FLASH Image System (FIS) directory is a flash description
+ format closely associated with the RedBoot boot loader.
+ It uses one single flash eraseblock in the flash to store an index of
+ all images in the flash.
+ This block size will vary depending on flash but is typically
+ 32 KB in size.
+
+maintainers:
+ - Linus Walleij <linus.walleij@linaro.org>
+
+properties:
+ compatible:
+ const: redboot-fis
+
+ fis-index-block:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: a index to the eraseblock containing the FIS directory on this
+ device. On a flash memory with 32KB eraseblocks, 0 means the first
+ eraseblock at 0x00000000, 1 means the second eraseblock at 0x00008000 and so on.
+
+required:
+ - compatible
+ - fis-index-block
+
+additionalProperties: false
+
+examples:
+ - |
+ flash {
+ partitions {
+ compatible = "redboot-fis";
+ fis-index-block = <0>;
+ };
+ };
on RAM chips in this manner. This block device is a user of MTD
devices performing that function.
- At the moment, it is also required for the Journalling Flash File
- System(s) to obtain a handle on the MTD device when it's mounted
- (although JFFS and JFFS2 don't actually use any of the functionality
- of the mtdblock device).
+ Note that mounting a JFFS2 filesystem doesn't require using mtdblock.
+ It's possible to mount a rootfs using the MTD device on the "root="
+ bootargs as "root=mtd2" or "root=mtd:name_of_device".
Later, it may be extended to perform read/erase/modify/write cycles
on flash chips to emulate a smaller block size. Needless to say,
You do not need this option for use with the DiskOnChip devices. For
those, enable NFTL support (CONFIG_NFTL) instead.
+comment "Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK."
+ depends on MTD_BLOCK || MTD_BLOCK_RO
+
config FTL
tristate "FTL (Flash Translation Layer) support"
depends on BLOCK
partition->mbd.tr = tr;
partition->mbd.devnum = -1;
- if (!add_mtd_blktrans_dev((void *)partition))
+ if (!add_mtd_blktrans_dev(&partition->mbd))
return;
}
Extend the physmap driver to allow flashes to be partially
physically addressed and assisted by GPIOs.
-config MTD_PMC_MSP_EVM
- tristate "CFI Flash device mapped on PMC-Sierra MSP"
- depends on PMC_MSP && MTD_CFI
- help
- This provides a 'mapping' driver which supports the way
- in which user-programmable flash chips are connected on the
- PMC-Sierra MSP eval/demo boards.
-
-choice
- prompt "Maximum mappable memory available for flash IO"
- depends on MTD_PMC_MSP_EVM
- default MSP_FLASH_MAP_LIMIT_32M
-
-config MSP_FLASH_MAP_LIMIT_32M
- bool "32M"
-
-endchoice
-
-config MSP_FLASH_MAP_LIMIT
- hex
- default "0x02000000"
- depends on MSP_FLASH_MAP_LIMIT_32M
-
config MTD_SUN_UFLASH
tristate "Sun Microsystems userflash support"
depends on SPARC && MTD_CFI && PCI
physmap-objs := $(physmap-objs-y)
obj-$(CONFIG_MTD_PHYSMAP) += physmap.o
obj-$(CONFIG_MTD_PISMO) += pismo.o
-obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o
obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
obj-$(CONFIG_MTD_SA1100) += sa1100-flash.o
obj-$(CONFIG_MTD_SBC_GXX) += sbc_gxx.o
+++ /dev/null
-/*
- * Mapping of a custom board with both AMD CFI and JEDEC flash in partitions.
- * Config with both CFI and JEDEC device support.
- *
- * Basically physmap.c with the addition of partitions and
- * an array of mapping info to accommodate more than one flash type per board.
- *
- * Copyright 2005-2007 PMC-Sierra, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-
-#include <asm/io.h>
-
-#include <msp_prom.h>
-#include <msp_regs.h>
-
-
-static struct mtd_info **msp_flash;
-static struct mtd_partition **msp_parts;
-static struct map_info *msp_maps;
-static int fcnt;
-
-#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n", __func__, __LINE__)
-
-static int __init init_msp_flash(void)
-{
- int i, j, ret = -ENOMEM;
- int offset, coff;
- char *env;
- int pcnt;
- char flash_name[] = "flash0";
- char part_name[] = "flash0_0";
- unsigned addr, size;
-
- /* If ELB is disabled by "ful-mux" mode, we can't get at flash */
- if ((*DEV_ID_REG & DEV_ID_SINGLE_PC) &&
- (*ELB_1PC_EN_REG & SINGLE_PCCARD)) {
- printk(KERN_NOTICE "Single PC Card mode: no flash access\n");
- return -ENXIO;
- }
-
- /* examine the prom environment for flash devices */
- for (fcnt = 0; (env = prom_getenv(flash_name)); fcnt++)
- flash_name[5] = '0' + fcnt + 1;
-
- if (fcnt < 1)
- return -ENXIO;
-
- printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt);
-
- msp_flash = kcalloc(fcnt, sizeof(*msp_flash), GFP_KERNEL);
- if (!msp_flash)
- return -ENOMEM;
-
- msp_parts = kcalloc(fcnt, sizeof(*msp_parts), GFP_KERNEL);
- if (!msp_parts)
- goto free_msp_flash;
-
- msp_maps = kcalloc(fcnt, sizeof(*msp_maps), GFP_KERNEL);
- if (!msp_maps)
- goto free_msp_parts;
-
- /* loop over the flash devices, initializing each */
- for (i = 0; i < fcnt; i++) {
- /* examine the prom environment for flash partititions */
- part_name[5] = '0' + i;
- part_name[7] = '0';
- for (pcnt = 0; (env = prom_getenv(part_name)); pcnt++)
- part_name[7] = '0' + pcnt + 1;
-
- if (pcnt == 0) {
- printk(KERN_NOTICE "Skipping flash device %d "
- "(no partitions defined)\n", i);
- continue;
- }
-
- msp_parts[i] = kcalloc(pcnt, sizeof(struct mtd_partition),
- GFP_KERNEL);
- if (!msp_parts[i])
- goto cleanup_loop;
-
- /* now initialize the devices proper */
- flash_name[5] = '0' + i;
- env = prom_getenv(flash_name);
-
- if (sscanf(env, "%x:%x", &addr, &size) < 2) {
- ret = -ENXIO;
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
- addr = CPHYSADDR(addr);
-
- printk(KERN_NOTICE
- "MSP flash device \"%s\": 0x%08x at 0x%08x\n",
- flash_name, size, addr);
- /* This must matchs the actual size of the flash chip */
- msp_maps[i].size = size;
- msp_maps[i].phys = addr;
-
- /*
- * Platforms have a specific limit of the size of memory
- * which may be mapped for flash:
- */
- if (size > CONFIG_MSP_FLASH_MAP_LIMIT)
- size = CONFIG_MSP_FLASH_MAP_LIMIT;
-
- msp_maps[i].virt = ioremap(addr, size);
- if (msp_maps[i].virt == NULL) {
- ret = -ENXIO;
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
-
- msp_maps[i].bankwidth = 1;
- msp_maps[i].name = kstrndup(flash_name, 7, GFP_KERNEL);
- if (!msp_maps[i].name) {
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
-
- for (j = 0; j < pcnt; j++) {
- part_name[5] = '0' + i;
- part_name[7] = '0' + j;
-
- env = prom_getenv(part_name);
-
- if (sscanf(env, "%x:%x:%n", &offset, &size,
- &coff) < 2) {
- ret = -ENXIO;
- kfree(msp_maps[i].name);
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
-
- msp_parts[i][j].size = size;
- msp_parts[i][j].offset = offset;
- msp_parts[i][j].name = env + coff;
- }
-
- /* now probe and add the device */
- simple_map_init(&msp_maps[i]);
- msp_flash[i] = do_map_probe("cfi_probe", &msp_maps[i]);
- if (msp_flash[i]) {
- msp_flash[i]->owner = THIS_MODULE;
- mtd_device_register(msp_flash[i], msp_parts[i], pcnt);
- } else {
- printk(KERN_ERR "map probe failed for flash\n");
- ret = -ENXIO;
- kfree(msp_maps[i].name);
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- goto cleanup_loop;
- }
- }
-
- return 0;
-
-cleanup_loop:
- while (i--) {
- mtd_device_unregister(msp_flash[i]);
- map_destroy(msp_flash[i]);
- kfree(msp_maps[i].name);
- iounmap(msp_maps[i].virt);
- kfree(msp_parts[i]);
- }
- kfree(msp_maps);
-free_msp_parts:
- kfree(msp_parts);
-free_msp_flash:
- kfree(msp_flash);
- return ret;
-}
-
-static void __exit cleanup_msp_flash(void)
-{
- int i;
-
- for (i = 0; i < fcnt; i++) {
- mtd_device_unregister(msp_flash[i]);
- map_destroy(msp_flash[i]);
- iounmap((void *)msp_maps[i].virt);
-
- /* free the memory */
- kfree(msp_maps[i].name);
- kfree(msp_parts[i]);
- }
-
- kfree(msp_flash);
- kfree(msp_parts);
- kfree(msp_maps);
-}
-
-MODULE_AUTHOR("PMC-Sierra, Inc");
-MODULE_DESCRIPTION("MTD map driver for PMC-Sierra MSP boards");
-MODULE_LICENSE("GPL");
-
-module_init(init_msp_flash);
-module_exit(cleanup_msp_flash);
#include "mtdcore.h"
static LIST_HEAD(blktrans_majors);
-static DEFINE_MUTEX(blktrans_ref_mutex);
static void blktrans_dev_release(struct kref *kref)
{
kfree(dev);
}
-static struct mtd_blktrans_dev *blktrans_dev_get(struct gendisk *disk)
-{
- struct mtd_blktrans_dev *dev;
-
- mutex_lock(&blktrans_ref_mutex);
- dev = disk->private_data;
-
- if (!dev)
- goto unlock;
- kref_get(&dev->ref);
-unlock:
- mutex_unlock(&blktrans_ref_mutex);
- return dev;
-}
-
static void blktrans_dev_put(struct mtd_blktrans_dev *dev)
{
- mutex_lock(&blktrans_ref_mutex);
kref_put(&dev->ref, blktrans_dev_release);
- mutex_unlock(&blktrans_ref_mutex);
}
static int blktrans_open(struct block_device *bdev, fmode_t mode)
{
- struct mtd_blktrans_dev *dev = blktrans_dev_get(bdev->bd_disk);
+ struct mtd_blktrans_dev *dev = bdev->bd_disk->private_data;
int ret = 0;
- if (!dev)
- return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
+ kref_get(&dev->ref);
- mutex_lock(&mtd_table_mutex);
mutex_lock(&dev->lock);
if (dev->open)
goto unlock;
- kref_get(&dev->ref);
__module_get(dev->tr->owner);
if (!dev->mtd)
unlock:
dev->open++;
mutex_unlock(&dev->lock);
- mutex_unlock(&mtd_table_mutex);
- blktrans_dev_put(dev);
return ret;
error_release:
dev->tr->release(dev);
error_put:
module_put(dev->tr->owner);
- kref_put(&dev->ref, blktrans_dev_release);
mutex_unlock(&dev->lock);
- mutex_unlock(&mtd_table_mutex);
blktrans_dev_put(dev);
return ret;
}
static void blktrans_release(struct gendisk *disk, fmode_t mode)
{
- struct mtd_blktrans_dev *dev = blktrans_dev_get(disk);
-
- if (!dev)
- return;
+ struct mtd_blktrans_dev *dev = disk->private_data;
- mutex_lock(&mtd_table_mutex);
mutex_lock(&dev->lock);
if (--dev->open)
goto unlock;
- kref_put(&dev->ref, blktrans_dev_release);
module_put(dev->tr->owner);
if (dev->mtd) {
}
unlock:
mutex_unlock(&dev->lock);
- mutex_unlock(&mtd_table_mutex);
blktrans_dev_put(dev);
}
static int blktrans_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
- struct mtd_blktrans_dev *dev = blktrans_dev_get(bdev->bd_disk);
+ struct mtd_blktrans_dev *dev = bdev->bd_disk->private_data;
int ret = -ENXIO;
- if (!dev)
- return ret;
-
mutex_lock(&dev->lock);
if (!dev->mtd)
ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -ENOTTY;
unlock:
mutex_unlock(&dev->lock);
- blktrans_dev_put(dev);
return ret;
}
struct gendisk *gd;
int ret;
- if (mutex_trylock(&mtd_table_mutex)) {
- mutex_unlock(&mtd_table_mutex);
- BUG();
- }
+ lockdep_assert_held(&mtd_table_mutex);
- mutex_lock(&blktrans_ref_mutex);
list_for_each_entry(d, &tr->devs, list) {
if (new->devnum == -1) {
/* Use first free number */
}
} else if (d->devnum == new->devnum) {
/* Required number taken */
- mutex_unlock(&blktrans_ref_mutex);
return -EBUSY;
} else if (d->devnum > new->devnum) {
/* Required number was free */
* minor numbers and that the disk naming code below can cope
* with this number. */
if (new->devnum > (MINORMASK >> tr->part_bits) ||
- (tr->part_bits && new->devnum >= 27 * 26)) {
- mutex_unlock(&blktrans_ref_mutex);
+ (tr->part_bits && new->devnum >= 27 * 26))
return ret;
- }
list_add_tail(&new->list, &tr->devs);
added:
- mutex_unlock(&blktrans_ref_mutex);
mutex_init(&new->lock);
kref_init(&new->ref);
{
unsigned long flags;
- if (mutex_trylock(&mtd_table_mutex)) {
- mutex_unlock(&mtd_table_mutex);
- BUG();
- }
+ lockdep_assert_held(&mtd_table_mutex);
if (old->disk_attributes)
sysfs_remove_group(&disk_to_dev(old->disk)->kobj,
if (!(mtd->flags & MTD_WRITEABLE))
dev->mbd.readonly = 1;
+ if (mtd_type_is_nand(mtd))
+ pr_warn("%s: MTD device '%s' is NAND, please consider using UBI block devices instead.\n",
+ tr->name, mtd->name);
+
if (add_mtd_blktrans_dev(&dev->mbd))
kfree(dev);
}
dev->tr = tr;
dev->readonly = 1;
+ if (mtd_type_is_nand(mtd))
+ pr_warn("%s: MTD device '%s' is NAND, please consider using UBI block devices instead.\n",
+ tr->name, mtd->name);
+
if (add_mtd_blktrans_dev(dev))
kfree(dev);
}
int i;
size_t size;
struct mtd_concat *concat;
+ struct mtd_info *subdev_master = NULL;
uint32_t max_erasesize, curr_erasesize;
int num_erase_region;
int max_writebufsize = 0;
concat->mtd.subpage_sft = subdev[0]->subpage_sft;
concat->mtd.oobsize = subdev[0]->oobsize;
concat->mtd.oobavail = subdev[0]->oobavail;
- if (subdev[0]->_writev)
+
+ subdev_master = mtd_get_master(subdev[0]);
+ if (subdev_master->_writev)
concat->mtd._writev = concat_writev;
- if (subdev[0]->_read_oob)
+ if (subdev_master->_read_oob)
concat->mtd._read_oob = concat_read_oob;
- if (subdev[0]->_write_oob)
+ if (subdev_master->_write_oob)
concat->mtd._write_oob = concat_write_oob;
- if (subdev[0]->_block_isbad)
+ if (subdev_master->_block_isbad)
concat->mtd._block_isbad = concat_block_isbad;
- if (subdev[0]->_block_markbad)
+ if (subdev_master->_block_markbad)
concat->mtd._block_markbad = concat_block_markbad;
- if (subdev[0]->_panic_write)
+ if (subdev_master->_panic_write)
concat->mtd._panic_write = concat_panic_write;
+ if (subdev_master->_read)
+ concat->mtd._read = concat_read;
+ if (subdev_master->_write)
+ concat->mtd._write = concat_write;
concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks;
subdev[i]->flags & MTD_WRITEABLE;
}
+ subdev_master = mtd_get_master(subdev[i]);
concat->mtd.size += subdev[i]->size;
concat->mtd.ecc_stats.badblocks +=
subdev[i]->ecc_stats.badblocks;
if (concat->mtd.writesize != subdev[i]->writesize ||
concat->mtd.subpage_sft != subdev[i]->subpage_sft ||
concat->mtd.oobsize != subdev[i]->oobsize ||
- !concat->mtd._read_oob != !subdev[i]->_read_oob ||
- !concat->mtd._write_oob != !subdev[i]->_write_oob) {
+ !concat->mtd._read_oob != !subdev_master->_read_oob ||
+ !concat->mtd._write_oob != !subdev_master->_write_oob) {
+ /*
+ * Check against subdev[i] for data members, because
+ * subdev's attributes may be different from master
+ * mtd device. Check against subdev's master mtd
+ * device for callbacks, because the existence of
+ * subdev's callbacks is decided by master mtd device.
+ */
kfree(concat);
printk("Incompatible OOB or ECC data on \"%s\"\n",
subdev[i]->name);
concat->mtd.name = name;
concat->mtd._erase = concat_erase;
- concat->mtd._read = concat_read;
- concat->mtd._write = concat_write;
concat->mtd._sync = concat_sync;
concat->mtd._lock = concat_lock;
concat->mtd._unlock = concat_unlock;
static int rfd_ftl_readsect(struct mtd_blktrans_dev *dev, u_long sector, char *buf)
{
- struct partition *part = (struct partition*)dev;
+ struct partition *part = container_of(dev, struct partition, mbd);
u_long addr;
size_t retlen;
int rc;
static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf, ulong *old_addr)
{
- struct partition *part = (struct partition*)dev;
+ struct partition *part = container_of(dev, struct partition, mbd);
struct block *block;
u_long addr;
int i;
static int rfd_ftl_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf)
{
- struct partition *part = (struct partition*)dev;
+ struct partition *part = container_of(dev, struct partition, mbd);
u_long old_addr;
int i;
int rc = 0;
return rc;
}
+static int rfd_ftl_discardsect(struct mtd_blktrans_dev *dev,
+ unsigned long sector, unsigned int nr_sects)
+{
+ struct partition *part = container_of(dev, struct partition, mbd);
+ u_long addr;
+ int rc;
+
+ while (nr_sects) {
+ if (sector >= part->sector_count)
+ return -EIO;
+
+ addr = part->sector_map[sector];
+
+ if (addr != -1) {
+ rc = mark_sector_deleted(part, addr);
+ if (rc)
+ return rc;
+
+ part->sector_map[sector] = -1;
+ }
+
+ sector++;
+ nr_sects--;
+ }
+
+ return 0;
+}
+
static int rfd_ftl_getgeo(struct mtd_blktrans_dev *dev, struct hd_geometry *geo)
{
- struct partition *part = (struct partition*)dev;
+ struct partition *part = container_of(dev, struct partition, mbd);
geo->heads = 1;
geo->sectors = SECTORS_PER_TRACK;
{
struct partition *part;
- if (mtd->type != MTD_NORFLASH || mtd->size > UINT_MAX)
+ if ((mtd->type != MTD_NORFLASH && mtd->type != MTD_RAM) ||
+ mtd->size > UINT_MAX)
return;
part = kzalloc(sizeof(struct partition), GFP_KERNEL);
printk(KERN_INFO PREFIX "name: '%s' type: %d flags %x\n",
mtd->name, mtd->type, mtd->flags);
- if (!add_mtd_blktrans_dev((void*)part))
+ if (!add_mtd_blktrans_dev(&part->mbd))
return;
}
out:
static void rfd_ftl_remove_dev(struct mtd_blktrans_dev *dev)
{
- struct partition *part = (struct partition*)dev;
+ struct partition *part = container_of(dev, struct partition, mbd);
int i;
for (i=0; i<part->total_blocks; i++) {
part->mbd.mtd->name, i, part->blocks[i].erases);
}
- del_mtd_blktrans_dev(dev);
vfree(part->sector_map);
kfree(part->header_cache);
kfree(part->blocks);
+ del_mtd_blktrans_dev(&part->mbd);
}
static struct mtd_blktrans_ops rfd_ftl_tr = {
.readsect = rfd_ftl_readsect,
.writesect = rfd_ftl_writesect,
+ .discard = rfd_ftl_discardsect,
.getgeo = rfd_ftl_getgeo,
.add_mtd = rfd_ftl_add_mtd,
.remove_dev = rfd_ftl_remove_dev,
projects / linux-2.6-microblaze.git / commitdiff