As nand_bb_write_buf calls mtd_write(bb->mtd, cur_ofs, now, ...) the
limit that now should be checked against is bb->mtd->size - cur_ofs.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In barebox_non_pbl_start() we do not run at the address we are linked
at, so we must read linker variables using ld_var(). Since ld_var()
current is not available on arm64 we create two zero sized arrays,
one at the begin of the image and one at the end. The difference
between both is the image size we are looking for.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Character device flag was set for ubi static volumes to vary the device
file size. This is now done with the truncate option. So no need for
the character device flag. This makes it also possible to dump a image from
the static volume.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The size of static ubi volumes changes depending on the content.
Add truncate callback to handle resizes.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Based on kernel commit 8a8e8d2fdbab ("ubi: Only read necessary size when reading
the VID header") by Sascha Hauer <s.hauer@pengutronix.de>:
When reading the vid hdr from the device UBI always reads a whole
page. Instead, read only the data we actually need and speed up
attachment of UBI devices by potentially making use of reading
subpages if the NAND driver supports it.
Since the VID header may be at offset vid_hdr_shift in the page and
we can only read from the beginning of a page we have to add that
offset to the read size.
Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This chip can be found in 4th generation Kindle devices
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When we want to detect if a mtd device contains an UBI image then
testing the first block is not enough since it can always happen that
UBI has just erased the block before the power failed during last boot.
Since UBI only ever erases one block at a time and directly writes the
ec header to it afterwards, it shouldn't be necessary to scan the whole
device for UBI data. Scan the first 64 blocks. The first non-empty block
then must contain UBI data, if instead we find foreign data we assume
that no UBI is on that mtd device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The Barebox recognized false bad erase blocks while booting from a
Spansion NAND (1). This error occurred due a to high clock. The
Kernel sets the default NAND clock to 22Mhz. So, to fix this error and
to be more identical with the Kernel, the Barebox should be too.
1: nand: NAND device: Manufacturer ID: 0x01, Chip ID: 0xd3 (AMD/Spansion
S34ML08G2), 1024MiB, page size: 2048, OOB size: 128
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Tested-by: Stefan Lengfeld <s.lengfeld@phytec.de>
Signed-off-by: Christian Hemp <c.hemp@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Since "57cebc4 mtd: ubi: Fix scrubbing during attach" we make sure
that the wear level worker does not start too early. However, now
there are cases when the worker starts too late. When a ubi image is
freshly written a volume may be autoresized. This has to be done
after the wear level worker is started because otherwise the initial
fastmap update will not be able to find any anchor PEBs.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ensure_wear_leveling() is called at the end of ubi_wl_init() and may
come to the decision to scrub some blocks. In the Kernel this is done
in a separate thread, but in barebox we do this synchronously. The
problem is that during ubi_wl_init() the EBA system is not yet
initialized (ubi_eba_init() is not yet called), so the wear level worker
hits a NULL pointer deref when the fastmap needs to be updated and
ubi_write_fastmap() accesses vol->eba_tbl.
Solve this by honoring the ubi->thread_enabled flag which is only set
to true when UBI is sufficiently initialized. This means we now can
have multiple works queued, so we can no longer simply do one work when
queued, but instead have to continue to do work until all work is done.
The best place to do so is a ubi_thread() function which behaves similar
to the Kernel function with the same name, but is called synchronously
in barebox. To make sure that the initially queued works are done, the
call to (no-op) wake_up_process() at the end of ubi_attach_mtd_dev()
is replaced with a call to ubi_thread().
While at it also honor the ubi->ro_mode flag to make sure we do not do
any wear leveling work on readonly UBI devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The only ioctl needed is the one to get the ubi_num from a file
descriptor. The remaining ioctls are now implemented as regular
function calls.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Remove dev_dbgs containing __FILE__ and __LINE__ and no other
interesting debug informations.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of using udelay and a countdown, use the is_timeout function.
Also, move the code closer to the kernel version, i.e. check for the
correct bank and clean the interrupt status.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The interrupt mask is incorrect in case of HW error correction.
The driver will time out waiting for the wrong interrupts.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Move v3 register definitions to include file so that they can
be reused for the early nand boot code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Code wishing to manipulate ubi devices from outside the ubi
layer needs the ubi_num as reference. Add an ioctl to get
the ubi_num from a filedescriptor.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Currently we use a ioctl API to create/remove ubi volumes. This
means we always have to carry all function code for ubi volume
manipulation when the ioctl is compiled in.
This adds a function API to create/remove volumes so that the linker
can throw the unused code away later.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
So far we relied on the clock rate as configured by reset default or
board code. Also we did not touch the symmetric mode bit. Use
the ONFI provided timing parameters to configure the clock rate for
the Nand controller. Also symmetric mode (EDO mode) when needed.
This is done for v2 controllers (i.MX25/35) only, other controllers
need other setup code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
preset_v1_v2() still needs to distinguish between v1 and v2 and
the shared code is not very big. Since we need another v2 only
addtion in the next patch split the function into a v1 and a v2
specific function.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Ported from Linux commit 974647e:
| Add a converter to retrieve NAND timings from an ONFI NAND timing mode.
| At the moment, only SDR NAND timings are supported.
|
| Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
| Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ERR_CAST exists to return error pointers as error pointers without
casting them explicitly to the correct pointer type.
Also this Fixes:
In function 'alloc_nand_resource':
warning: return makes pointer from integer without a cast
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is necessary to prevent the imx_nand_bbm command to bail out
on ECC errors which leaves the device without BBT.
Also simplify buffer management: Use on-stack buffer instead of malloc.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
if (A) {
if (!B)
return C;
return D;
}
return C;
can be simplified to:
if (A && B)
return D;
return C;
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Added support to update UBI static volumes in barebox.
This is mainly realized with adding the ioctl UBI_IOCVOLUP.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The actual work in the wear leveling code is done in a separate thread.
Since we do not have threading so far we did not do any of the queued
work. Change this by calling the worker function synchronously.
With this barebox now can write a fastmap on a freshly ubiformated
device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When moving a PEB the leb_write_trylock() function is called.
As the function never returns 0 UBI will end up in an endless
loop.
Noticed the issue when fastmap has been enabled and data is beeing copied
several times to a UBI volume. When UBI tries to move the anchor PEB,
the issue comes up.
The leb_write_trylock() is now equal to the leb_write_lock().
But kept it for easier maintaince in future when syncing with
kernel.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
So far we relied on the default timing values which are rather slow.
This patch adds the timing setup functions from the kernel. Tested
on i.MX6 with a AMD/Spansion S34ML08G2 and a Micron MT29F32G08ABAAAWP.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Make the ONFI function hooks available after nand_scan_ident() but
before nand_scan_tail(). Based on the kernel commit:
4204ccc mtd: set ONFI nand's default hooks in nand_set_defaults()
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Commit 81737c1d43 (mtd: Fix erasing of devices >4GiB) changed the
prototype of the erase function, but fogot to fix up the stub function
used when no MTD write support is built in.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On some NAND chips the driver uses a ECC size that is not dividable by
the number of chunks per page which means a single chunk cannot be read.
Disable the subpage feature for these NANDs. This is quite unfortunate
since the subpage feature really speeds up scanning NAND chips.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Freeing the fastmap is now done by ubi_fastmap_close() from kernel.
No need to keep the barebox own fastmap free function.
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Uwe Kleine-König
Sascha Hauer
Peter Mamonov
Teresa Remmet
Ulrich Ölmann
Alexander Kurz
Christian Hemp
Daniel Schultz
Yegor Yefremov
Giorgio Dal Molin
Steffen Trumtrar
Lucas Stach