This is a fresh UBI import from Linux v3.10
This is done mainly to get fastmap support.
This was tested with the i.MX nand driver, the MXS nand driver and
on CFI NOR flash.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To update to the latest UBI support from the Kernel first remove
the old UBI support. Without it the update will be even less reviewable.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This updates the NAND stuff to Linux-3.11-rc1. It is synchronized
as best as we can get:
- locks removed
- The splitting in different files we had to better support different
features has been dropped. Instead this is now done mostly with the
use of __maybe_unused
Some barebox adjustments are forward ported, like:
- Allow partial page writes
- Optionally allow to erase bad blocks
- check for all_ff before writing a page
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This introduces the ecc stength fields in the structures and fills
them in, but leaves them unused right now.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this fix the problems introduced when detecting non ONFI flashes in
commit 4c2bdc8728
"nand_base: detect more ONFI flash"
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This file is present in current kernels. In order to get closer
to current mtd support introduce it for barebox aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
While erasing bad blocks is a potentially dangerous operation
it is sometimes needed during development or when some foreign
code has touched the flash.
This patch adds a device parameter 'erasebad' to allow erasing
bad blocks. Since this is not wanted during production this is
behind a Kconfig option.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This allows us to have some NAND specific stuff during registration,
like for example adding NAND specific device parameters.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Do not write pages which only contain 0xff. UBI expects pages which
seem empty to be writable. This got lost with:
| commit 3139c3e9a6
| Author: Sascha Hauer <s.hauer@pengutronix.de>
| Date: Thu Nov 29 11:16:40 2012 +0100
|
| mtd core: call driver write function with complete buffer
|
| mtd->write is supposed to loop around pages internally, no need
| to do this in mtd_write. This fixes a huge write performance drop
| with the m25p80 driver when it was converted to a mtd driver recently.
| Since mtd->writesize is 1 for this driver mtd_write ended up doing
| single byte writes on the flash.
Introduce mtd_all_ff as a global function since UBI currently has its own
implementation.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The Kernel has mtd_read, mtd_write, mtd_erase and mtd_block_markbad.
Add these functions to barebox aswell to make future mtd synchronizations
with the kernel easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we now create the cdev via mtd
This will also simplify sync with linux
to avoid the m25p8000 or m25p00 the cdev is still named name m25p and the
drivers m25p80
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this allow to do not provide block_isbad at mtd driver level
as example spi flash
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This introduces a new NAND_BUSWIDTH_AUTO flag which can be used
to automatically detect the nand buswidth. The id is always read
in 8bit mode. An additional callback is needed to switch the nand
controller into 16bit mode.
This currently depends on a safe read_byte (always) and read_buf
(for onfi-only flashes) callback. It has been tested on OMAP, but
is not something that generally works. For this reason the existence
of the set_buswidth callback is used to determine whether we are
able to do autodetection or not.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
the code is taken from linux & u-boot implementations
Validated on an i.MX53 which gives the following log :
ONFI flash detected ... ONFI param page 0 valid
NAND device: Manufacturer ID: 0x2c, Chip ID: 0x38 (Micron MT29F8G08ABABAWP), page size: 4096, OOB size: 224
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Split /dev/mtd and /dev/mtdoob devices.
Remove from mtd structure the mtdoob character device.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Change NAND_WRITE into MTD_WRITE.
Change "page_shift" references in the core, which are purely
NAND, into mtd->writesize which is MTD generic.
Rename all "info" (struct mtd_info) into "mtd".
Also provide a parameter to add_mtd_device() so that legacy
nand devices still appear as nand<N>.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sync these limits with the Linux kernel. This allows support for NAND devices
with page size of 4k.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We accidently have two list implementations in the tree:
include/list.h and include/linux/list.h. This patch moves
the latter (newer one) to include/linux/list.h.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Eric Bénard
Jan Luebbe
Jean-Christophe PLAGNIOL-VILLARD
Antony Pavlov
Robert Jarzmik
Baruch Siach
Marek Belisko
Juergen Beisert
sascha
Sascha Hauer