Commit graph

162 commits

Author SHA1 Message Date
Jörg Krause
da37d09682 mtd: nand: export nand_get_flash_type function
`nand_get_flash_type()` allows identification of supported NAND flashs.
The function is useful in SPL (like mxs_nand_spl.c) to lookup for a NAND
flash (which does not support ONFi) instead of using nand_simple.c and
hard-coding all required NAND parameters.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
2018-06-27 12:20:55 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Masahiro Yamada
ba8c9ea38a mtd: nand: include <asm/cache.h> from include/linux/mtd/rawnand.h
This is needed for ARCH_DMA_MINALIGN.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-12-04 22:00:01 +09:00
Masahiro Yamada
6ae3900a86 mtd: nand: Rename nand.h into rawnand.h
This header was renamed to rawnand.h in Linux.

The following is the corresponding commit in Linux.

  commit d4092d76a4a4e57b65910899948a83cc8646c5a5
  Author: Boris Brezillon <boris.brezillon@free-electrons.com>
  Date:   Fri Aug 4 17:29:10 2017 +0200

      mtd: nand: Rename nand.h into rawnand.h

      We are planning to share more code between different NAND based
      devices (SPI NAND, OneNAND and raw NANDs), but before doing that
      we need to move the existing include/linux/mtd/nand.h file into
      include/linux/mtd/rawnand.h so we can later create a nand.h header
      containing all common structure and function prototypes.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-12-04 22:00:00 +09:00
Masahiro Yamada
e6001371d1 mtd: nand: introduce NAND_ROW_ADDR_3 flag
Several drivers check ->chipsize to see if the third row address cycle
is needed.  Instead of embedding magic sizes such as 32MB, 128MB in
drivers, introduce a new flag NAND_ROW_ADDR_3 for clean-up.  Since
nand_scan_ident() knows well about the device, it can handle this
properly.  The flag is set if the row address bit width is greater
than 16.

Delete comments such as "One more address cycle for ..." because
intention is now clear enough from the code.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

[Linux commit: 14157f861437ebe2d624b0a845b91bbdf8ca9a2d]
2017-11-29 00:28:59 +09:00
Masahiro Yamada
a01549ba40 mtd: nand: add a shorthand to generate nand_ecc_caps structure
struct nand_ecc_caps was designed as flexible as possible to support
multiple stepsizes (like sunxi_nand.c).

So, we need to write multiple arrays even for the simplest case.
I guess many controllers support a single stepsize, so here is a
shorthand macro for the case.

It allows to describe like ...

NAND_ECC_CAPS_SINGLE(denali_pci_ecc_caps, denali_calc_ecc_bytes, 512, 8, 15);

... instead of

static const int denali_pci_ecc_strengths[] = {8, 15};
static const struct nand_ecc_step_info denali_pci_ecc_stepinfo = {
        .stepsize = 512,
        .strengths = denali_pci_ecc_strengths,
        .nstrengths = ARRAY_SIZE(denali_pci_ecc_strengths),
};
static const struct nand_ecc_caps denali_pci_ecc_caps = {
        .stepinfos = &denali_pci_ecc_stepinfo,
        .nstepinfos = 1,
        .calc_ecc_bytes = denali_calc_ecc_bytes,
};

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

[Linux commit: a03c60178c181767ecfb26fb311a88742d228118]
2017-11-29 00:28:59 +09:00
Masahiro Yamada
470c29d1c2 mtd: nand: add generic helpers to check, match, maximize ECC settings
Driver are responsible for setting up ECC parameters correctly.
Those include:
  - Check if ECC parameters specified (usually by DT) are valid
  - Meet the chip's ECC requirement
  - Maximize ECC strength if NAND_ECC_MAXIMIZE flag is set

The logic can be generalized by factoring out common code.

This commit adds 3 helpers to the NAND framework:
nand_check_ecc_caps - Check if preset step_size and strength are valid
nand_match_ecc_req - Match the chip's requirement
nand_maximize_ecc - Maximize the ECC strength

To use the helpers above, a driver needs to provide:
  - Data array of supported ECC step size and strength
  - A hook that calculates ECC bytes from the combination of
    step_size and strength.

By using those helpers, code duplication among drivers will be
reduced.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

[Linux commit: 2c8f8afa7f92acb07641bf95b940d384ed1d0294]
2017-11-29 00:28:59 +09:00
Boris Brezillon
52cde35b96 mtd: nand: Pass the CS line to ->setup_data_interface()
Some NAND controllers can assign different NAND timings to different
CS lines. Pass the CS line information to ->setup_data_interface() so
that the NAND controller driver knows which CS line is concerned by
the setup_data_interface() request.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 104e442a67cfba4d0cc982384761befb917fb6a1]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:59 +09:00
Masahiro Yamada
436fb2b84d mtd: nand: allow drivers to request minimum alignment for passed buffer
In some cases, nand_do_{read,write}_ops is passed with unaligned
ops->datbuf.  Drivers using DMA will be unhappy about unaligned
buffer.

The new struct member, buf_align, represents the minimum alignment
the driver require for the buffer.  If the buffer passed from the
upper MTD layer does not have enough alignment, nand_do_*_ops will
use bufpoi.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

[Linux commit: 477544c62a84d3bacd9f90ba75ffc16c04d78071]
2017-11-29 00:28:59 +09:00
Boris Brezillon
94b50a8aae mtd: nand: Drop the ->errstat() hook
The ->errstat() hook is no longer implemented NAND controller drivers.
Get rid of it before someone starts abusing it.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 7d135bcced20be2b50128432c5426a7278ec4f6d]
[masahiro: modify davinci_nand.c for U-Boot]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Boris Brezillon
4d75596e6d mtd: nand: Drop unused cached programming support
Cached programming is always skipped, so drop the associated code until
we decide to really support it.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 0b4773fd1649e0d418275557723a7ef54f769dc9]
[masahiro: modify davinci_nand.c for U-Boot]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Boris Brezillon
13f3b04f61 mtd: add mtd_ooblayout_xxx() helper functions
In order to make the ecclayout definition completely dynamic we need to
rework the way the OOB layout are defined and iterated.

Create a few mtd_ooblayout_xxx() helpers to ease OOB bytes manipulation
and hide ecclayout internals to their users.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 75eb2cec251fda33c9bb716ecc372819abb9278a]
[masahiro:
 cherry-pick more code from adbbc3bc827eb1f43a932d783f09ba55c8ec8379]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Marc Gonzalez
1fb87de83d mtd: nand: Support controllers with custom page
If your controller already sends the required NAND commands when
reading or writing a page, then the framework is not supposed to
send READ0 and SEQIN/PAGEPROG respectively.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 3371d663bb4579f1b2003a92162edd6d90edd089]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Boris Brezillon
6f84b26b53 mtd: nand: Add a few more timings to nand_sdr_timings
Add the tR_max, tBERS_max, tPROG_max and tCCS_min timings to the
nand_sdr_timings struct.
Assign default/safe values for the statically defined timings, and
extract them from the ONFI parameter table if the NAND is ONFI
compliant.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
[Linux commit: 204e7ecd47e26cc12d9e8e8a7e7a2eeb9573f0ba
 Fixup commit: 6d29231000bbe0fb9e4893a9c68151ffdd3b5469]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Boris Brezillon
3d841b3214 mtd: nand: Fix data interface configuration logic
When changing from one data interface setting to another, one has to
ensure a specific sequence which is described in the ONFI spec.

One of these constraints is that the CE line has go high after a reset
before a command can be sent with the new data interface setting, which
is not guaranteed by the current implementation.

Rework the nand_reset() function and all the call sites to make sure the
CE line is asserted and released when required.

Also make sure to actually apply the new data interface setting on the
first die.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: d8e725dd8311 ("mtd: nand: automate NAND timings selection")
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
[Linux commit: 73f907fd5fa56b0066d199bdd7126bbd04f6cd7b]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Boris Brezillon
27c4792cd2 mtd: nand: automate NAND timings selection
The NAND framework provides several helpers to query timing modes supported
by a NAND chip, but this implies that all NAND controller drivers have
to implement the same timings selection dance. Also currently NAND
devices can be resetted at arbitrary places which also resets the timing
for ONFI chips to timing mode 0.

Provide a common logic to select the best timings based on ONFI or
->onfi_timing_mode_default information. Hook this into nand_reset()
to make sure the new timing is applied each time during a reset.

NAND controller willing to support timings adjustment should just
implement the ->setup_data_interface() method.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
[Linux commit: d8e725dd831186a3595036b2b1df9f68cbc6efa3]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Sascha Hauer
b893e83330 mtd: nand: Expose data interface for ONFI mode 0
The nand layer will need ONFI mode 0 to use it as timing mode
before and right after reset.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 6e1f9708dbf3c50a8da93c1952a01a7a2acb5e66]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Sascha Hauer
46deff57da mtd: nand: convert ONFI mode into data interface
struct nand_data_interface is the designated type to pass to
the NAND drivers to configure the timing. To simplify further
patches convert the onfi_sdr_timings array from type struct
nand_sdr_timings nand_data_interface.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: b1dd3ca203fccd111926c3f6ac59bf903ec62b05]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:58 +09:00
Sascha Hauer
01042499b8 mtd: nand: Introduce nand_data_interface
Currently we have no data structure to fully describe a NAND timing.
We only have struct nand_sdr_timings for NAND timings in SDR mode,
but nothing for DDR mode and also no container to store both types
of timing.
This patch adds struct nand_data_interface which stores the timing
type and a union of different timings. This can be used to pass to
drivers in order to configure the timing.
Add kerneldoc for struct nand_sdr_timings while touching it anyway.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: eee64b700e26b9bcc6fce024681c31f5e12271fc]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:57 +09:00
Sascha Hauer
1728eb577d mtd: nand: Create a NAND reset function
When NAND devices are resetted some initialization may have to be done,
like for example they have to be configured for the timing mode that
shall be used. To get a common place where this initialization can be
implemented create a nand_reset() function. This currently only issues
a NAND_CMD_RESET to the NAND device. The places issuing this command
manually are replaced with a call to nand_reset().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 2f94abfe35b210e7711af9202a3dcfc9e779219a]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:57 +09:00
Sascha Hauer
6a1ff76ed3 mtd: nand: remove unnecessary 'extern' from function declarations
'extern' is not necessary for function declarations. To prevent
people from adding the keyword to new declarations remove the
existing ones.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 79022591839f110f465cac0223e117b91d47d5db]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:57 +09:00
Boris Brezillon
19d30ded88 mtd: nand: Add an option to maximize the ECC strength
The generic NAND DT bindings allows one to tweak the ECC strength and
step size to their need. It can be used to lower the ECC strength to
match a bootloader/firmware config, but might also be used to get a better
reliability.

In the latter case, the user might want to use the maximum ECC strength
without having to explicitly calculate the exact value (this value not
only depends on the OOB size, but also on the NAND controller, and can
be tricky to extract).

Add a generic 'nand-ecc-maximize' DT property and the associated
NAND_ECC_MAXIMIZE flag, to let ECC controller drivers select the best
ECC strength and step-size on their own.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
[Linux commit: ba78ee00e1ff84de9b3ad33edbd3ec599099ee82]
[masahiro: of_property_read_bool -> fdt_getprop for U-Boot]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:57 +09:00
Masahiro Yamada
4c61f79b5e mtd: nand: add onfi_* stubs in case ONFI_DETECTION is disabled
Add stubs to the header in case CONFIG_SYS_NAND_ONFI_DETECTION is
disabled.  This is much easier than adding around #ifdef to the
caller side.

Also, I removed the #ifdef around onfi_params.  In Linux, onfi_params
and jedec_params are unified as union.  It will be the right thing
to do.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29 00:28:57 +09:00
Masahiro Yamada
8b7f4b9cc1 mtd: remove MTDDEBUG() and CONFIG_MTD_DEBUG
All users of this macro have been converted.  Remove MTDDEBUG and
related CONFIG options.

ubifs_dbg_msg_key() is kept.  It is silent unless DEBUG is defined.

I am not touching scripts/config_whitelist.txt.  The deprecated options
will be dropped by the next resync.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-23 14:07:26 -04:00
Masahiro Yamada
b44b30260f printk: collect printk stuff into <linux/printk.h> with loglevel support
When we import code from Linux, with regular re-sync planned, we want
to use printk() and pr_*().  U-Boot does not support them in a clean
way.  So, people end up with local macros, or compat headers here and
there, then we occasionally see build errors of definition conflicts.

We have include/linux/compat.h, but putting all sorts of unrelated
things into a single header is just a temporal workaround.  Hence this
patch, to find the best home for all printk variants.  If you want to
use printk() and friends, please include <linux/printk.h>.  This header
is self-contained, and pulls in only a few headers.

When I was testing this clean-up, I noticed the image size exceeded
its platform limit on some boards.  This is because all pr_*() that
were previously defined as no-op in include/linux/mtd/mtd.h (unless
CONFIG_MTD_DEBUG is set), are now enabled.

To make such boards happy, this commit also implements CONFIG_LOGLEVEL.
The concept is similar to the kernel parameter "loglevel".  (Actually,
the Kconfig help message was taken from kernel-paremeter.txt of Linux)
Messages with a loglevel smaller than console loglevel will be printed.

The difference is the loglevel is build-time determined.  To save the
image size, lower priority pr_*() are compiled out.  I set the default
of CONFIG_LOGLEVEL to 6, i.e. pr_notice and higher priority messages
are compiled in.

I adjusted CONFIG_LOGLEVEL to avoid build error for some boards.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add in SPL_LOGLEVEL that is the same as LOGLEVEL]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-04 10:31:17 -04:00
Masahiro Yamada
1221ce459d treewide: replace #include <asm/errno.h> with <linux/errno.h>
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content.  (both just wrap <asm-generic/errno.h>)

Replace all include directives for <asm/errno.h> with <linux/errno.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-23 17:55:42 -04:00
Masahiro Yamada
b5bf5cb3b3 treewide: use #include <...> to include public headers
We are supposed to use #include <...> to include headers in the
public include paths.  We should use #include "..." only for headers
in local directories.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-09-23 17:53:56 -04:00
Steve Rae
59441ac3c1 mtd: fix compiler warnings
- add missing declaration
- update debug output format specifiers

Signed-off-by: Steve Rae <steve.rae@raedomain.com>
2016-07-24 20:36:29 -05:00
Boris Brezillon
c1fe6b5b5e mtd: nand: Increase the max OOB size
Some NANDs are now exposing 1664 OOB bytes per page. Adjust the
NAND_MAX_OOBSIZE value accordingly.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-07-24 20:36:28 -05:00
Brian Norris
42bd19ce6c mtd: nand: add common DT init code
These are already-documented common bindings for NAND chips. Let's
handle them in nand_base.

If NAND controller drivers need to act on this data before bringing up
the NAND chip (e.g., fill out ECC callback functions, change HW modes,
etc.), then they can do so between calling nand_scan_ident() and
nand_scan_tail().

The original commit has been slightly reworked to use the fdtdec_xxx()
helpers (instead of the of_xxxx() ones).

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
2016-07-24 20:36:28 -05:00
Ladislav Michl
22d6ac490e armv7: armv7: introduce set_gpmc_cs0
Allow boards to runtime detect flash type.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
2016-07-22 14:46:11 -04:00
Ladislav Michl
0568dd0663 armv7: make gpmc_cfg const
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
[trini: Adapt am33xx, duovero, omap_zoom1]
Signed-off-by: Tom Rini <trini@konsulko.com>

Signed-off-by: Tom Rini <trini@konsulko.com>
2016-07-22 14:46:00 -04:00
Scott Wood
ceee07b658 mtd: nand: Sync with Linux v4.6
Updates the NAND code to match Linux v4.6.  The previous sync was from
Linux v4.1 in commit d3963721d9.

Note that none of the individual NAND drivers tracked Linux closely
enough to be synced themselves, other than manually applying a few
cross-tree changes.

Signed-off-by: Scott Wood <oss@buserror.net>
Tested-by: Heiko Schocher <hs@denx.de>
2016-06-03 20:27:48 -05:00
Scott Wood
81c772521f mtd: nand: Add page argument to write_page() etc.
This change is part of the Linux 4.6 sync.  It is being done 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>
2016-06-03 20:27:48 -05:00
Scott Wood
17cb4b8f32 mtd: nand: Add+use mtd_to/from_nand and nand_get/set_controller_data
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>
2016-06-03 20:27:48 -05:00
Scott Wood
b616d9b0a7 nand: Embed mtd_info in struct nand_chip
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>
2016-06-03 20:27:48 -05:00
Scott Wood
ea7d1eec66 mtd: nand: Remove docg4 driver and palmtreo680 flashing tool
Commit ad4f54ea86 ("arm: Remove palmtreo680 board") removed the only
user of the docg4 driver and the palmtreo680 image flashing tool.  This
patch removes them.

Signed-off-by: Scott Wood <oss@buserror.net>
Cc: Mike Dunn <mikedunn@newsguy.com>
Cc: Simon Glass <sjg@chromium.org>
2016-06-03 20:27:48 -05:00
Andreas Bießmann
09c2b8f3e3 Change my mailaddress
I'll switch my mails to my own server, so drop all gmail references.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2016-05-02 18:37:09 -04:00
Tom Rini
78e9e71c83 include/linux/mtd: Update copyright notices
Condense these updates down to SPDX tags too while doing this.  This is
a port of a1452a3771c4eb85bd779790b040efdc36f4274e from the Linux
Kernel.

Signed-off-by: Tom Rini <trini@konsulko.com>
2015-11-12 13:19:03 -05:00
Thomas Chou
d85879938d dm: implement a MTD uclass
Implement a Memory Technology Device (MTD) uclass. It should
include most flash drivers in the future. Though no uclass ops
are defined yet, the MTD ops could be used.

The NAND flash driver is based on MTD. The CFI flash and SPI
flash support MTD, too. It should make sense to convert them
to MTD uclass.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
2015-11-12 08:26:58 +08:00
Heiko Schocher
0195a7bb36 ubi,ubifs: sync with linux v4.2
sync with linux v4.2

commit 64291f7db5bd8150a74ad2036f1037e6a0428df2
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun Aug 30 11:34:09 2015 -0700

    Linux 4.2

This update is needed, as it turned out, that fastmap
was in experimental/broken state in kernel v3.15, which
was the last base for U-Boot.

Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
2015-10-26 09:22:36 +01:00
Siva Durga Prasad Paladugu
2580a2a7e7 mtd: nand: Increase max sizes of OOB and Page size
Increase max sizes for OOB, Page size and eccpos to
suit for Micron MT29F32G08 part

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
2015-08-25 22:53:58 -05:00
Scott Wood
d3963721d9 nand: Sync with Linux v4.1
Update the NAND code to match Linux v4.1.  The previous sync was
from Linux v3.15 in commit 4e67c57125.

CONFIG_SYS_NAND_RESET_CNT is removed, as the upstream Linux code now
has its own timeout.  Plus, CONFIG_SYS_NAND_RESET_CNT was undocumented
and not selected by any board.

Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-08-25 22:53:57 -05:00
Ezequiel Garcia
86a720aafc mtd: Introduce mtd_block_isreserved()
In addition to mtd_block_isbad(), which checks if a block is bad or
reserved, it's needed to check if a block is reserved only (but not
bad). This commit adds an MTD interface for it, in a similar fashion to
mtd_block_isbad().

While here, fix mtd_block_isbad() so the out-of-bounds checking is done
before the callback check.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
[scottwood: Cherry-picked from Linux 8471bb73ba10ed67]
Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-08-25 22:53:57 -05:00
Scott Wood
273310644f nand: Remove __UBOOT__ ifdefs
I didn't approve the patch that added them.  Get them out of the way
before doing a sync.

Signed-off-by: Scott Wood <scottwood@freescale.com>
2015-08-25 22:53:57 -05:00
Masahiro Yamada
f18d11163e mtd: fix false positive "Offset exceeds device limit" error
Since commit 09c3280754 (mtd, nand: Move common functions from
cmd_nand.c to common place), NAND commands would not work at all
on large devices.

    => nand read 80000000 10000 10000

    NAND read: Offset exceeds device limit
    => nand erase 100000 100000

    NAND erase: Offset exceeds device limit

The type of the "size" of "struct mtd_info" is uint64_t, while
mtd_arg_off_size() and mtd_arg_off() treat chipsize as int type.
The chipsize is wrapped around if the argument is given with 2GB
or larger.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-07-10 09:38:50 -04:00
Heiko Schocher
09c3280754 mtd, nand: Move common functions from cmd_nand.c to common place
Move common functions from cmd_nand.c (for calculating offset
and size from cmdline paramter) to common place, so they could
used from other commands which use mtd partitions.

For onenand the arg_off_size() is left in common/cmd_onenand.c.
It should use now the common arg_off() function, but as I could
not test onenand I let it there ...

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
2015-06-30 00:40:11 +05:30
Peter Tyser
073adf987e nand: Remove CONFIG_MTD_NAND_VERIFY_WRITE
The CONFIG_MTD_NAND_VERIFY_WRITE has been removed from Linux for some
time and a more generic method of NAND verification now exists in U-Boot.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2015-03-30 23:24:39 -05:00
Daniel Mack
c316f577b4 mtd: OMAP: Enable GPMC prefetch mode
Enable GPMC's prefetch feature for NAND access. This speeds up NAND read
access a lot by pre-fetching contents in the background and reading them
through the FIFO address.

The current implementation has two limitations:

 a) it only works in 8-bit mode
 b) it only supports read access

Both is easily fixable by someone who has hardware to implement it.

Note that U-Boot code uses non word-aligned buffers to read data into, and
request read lengths that are not multiples of 4, so both partial buffers
(head and tail) have to be addressed.

Tested on AM335x hardware.

Tested-by: Guido Martínez <guido@vanguardiasur.com.ar>
Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar>
Signed-off-by: Daniel Mack <zonque@gmail.com>
[trini: Make apply again, use 'cs' fix pointed out by Guido]
Signed-off-by: Tom Rini <trini@ti.com>
2015-01-13 11:51:23 -05:00
Masahiro Yamada
3b61297024 kbuild: force to define __UBOOT__ in all the C sources
U-Boot has imported various source files from other projects,
mostly Linux.

Something like

  #ifdef __UBOOT__
    [ modification for U-Boot ]
  #else
    [ original code ]
  #endif

is an often used strategy for clarification of adjusted parts,
that is, easier re-sync in future.

Instead of defining __UBOOT__ in each source file,
passing it from the top Makefile would be easier.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2014-09-16 12:23:56 -04:00