Starting from revision F we need to set nWP before writing to
flash. Create a new NAND command that can be used for that and
use it for fwup, booting and recovery mode. We assume that the
payload runs a RW filesystem so we set the GPIO before booting
the system.
sysmobts: ubifsmount might already write to the nand...
Remove the write protect a lot earlier as ubifsmount might already
try to grow the freshly flashed UBIFS and allocate UBIs for it.
sysmobts: Add a huge sleep to wait for the pin to be driven
Add some margin and wait for the pin to get high and such. I
can't easily measure if we sleep at all or if it is really 100ms
but it can't hurt and we don't optimize for boot times yet.
sysmobts: Toggle nWP on RevG and later as well
sysmobts-v2: ubi part appears to write as well
The ubi part command will write for the same reason. Move the
command line to the front.
(untested)
Now that nand_info[] is an array of pointers we need to test the
pointer itself rather than using name as a proxy for NULLness.
Fixes: b616d9b0a7 ("nand: Embed mtd_info in struct nand_chip")
Signed-off-by: Scott Wood <oss@buserror.net>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Looks like we have few more places where we're testing for
nand_info[i]->name. We can now use just test for nand_info[i]
instead.
This fixes a data abort on devices with no NAND when doing
nand info.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
If we do nand device 0 command in u-boot on a device that has NAND support
enabled but no NAND chip, we can get data abort at least on omaps.
Fix the issue by replacing the check with nand_info[dev] as
suggested by Scott Wood. The check for name existed before because before
the array-to-pointer conversion there was no way to directly test
nand_info[dev] for emptiness.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Modern NANDs do not guarantee that data written in raw mode will not
contain bitflips just after writing them. This is fine since the number
of bitflips should be rather low and thus fixable by the ECC engine,
but since we are reading data in raw mode to verify if they match the
input data we cannot prevent failures if some bits are flipped.
The option of using standard mode to verify the data is not acceptable
either, since one of the usage of raw mode is to allow flashing images
that do not respect the standard NAND page layout or the default ECC
config (this is the case on Allwinner platforms, where the ROM code
tests several hardcoded configs, which are not necessarily matching the
NAND characteristics).
Add an extension to the nand write.raw command allowing one to disable
the verification step.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
nand torture currently works on exactly one nand block which is specified
by giving the byteoffset to the beginning of the block.
Extend this by allowing for a second parameter specifying the byte size
to be tested.
e.g.
==> nand torture 1000000
NAND torture: device 0 offset 0x1000000 size 0x20000 (block size 0x20000)
Passed: 1, failed: 0
==> nand torture 1000000 40000
NAND torture: device 0 offset 0x1000000 size 0x40000 (block size 0x20000)
Passed: 2, failed: 0
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
[scottwood: fix usage to show size as optional, and add misssing braces]
Signed-off-by: Scott Wood <oss@buserror.net>
These functions are part of the Linux 4.6 sync. They are being added
before the main sync patch in order to make it easier to address the
issue across all NAND drivers (many/most of which do not closely track
their Linux counterparts) separately from other merge issues.
Signed-off-by: Scott Wood <oss@buserror.net>
nand_info[] is now an array of pointers, with the actual mtd_info
instance embedded in struct nand_chip.
This is in preparation for syncing the NAND code with Linux 4.6,
which makes the same change to struct nand_chip. It's in a separate
commit due to the large amount of changes required to accommodate the
change to nand_info[].
Signed-off-by: Scott Wood <oss@buserror.net>
Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Holger Hans Peter Freyther
Scott Wood
Tony Lindgren
Boris Brezillon
Max Krummenacher
Simon Glass