Commit graph

1590 commits

Author SHA1 Message Date
Tom Rini
9450ab2ba8 Merge branch 'master' of git://git.denx.de/u-boot-spi
- Various MTD fixes from Boris
- Zap various unused / legacy paths.
- pxa3xx NAND update from Miquel

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-12-05 15:06:24 -05:00
Boris Brezillon
08898e8b22 mtd: sf: Make sf_mtd.c more robust
SPI flash based MTD devs can be registered/unregistered at any time
through the sf probe command or the spi_flash_free() function.

This commit does not try to fix the root cause as it would probably
require rewriting most of the code and have an mtd_info object
instance per spi_flash object (not to mention that the the spi-flash
layer is likely to be replaced by a spi-nor layer ported from Linux).

Instead, we try to be as safe as can be by checking the code returned
by del_mtd_device() and complain loudly when there's nothing we can
do about the deregistration failure. When that happens we also reset
sf_mtd_info.priv to NULL, and check for NULL pointer in the mtd hooks
so that -ENODEV is returned instead of hitting a NULL pointer
dereference exception when the MTD instance is later accessed by a user.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
7371944a71 mtd: sf: Unregister the MTD device prior to removing the spi_flash obj
The DM implementation of spi_flash_free() does not unregister the MTD
device before removing the spi dev object. This leads to a use-after-free
bug when the MTD device is later accessed by a MTD user (observed when
attaching the device to UBI after env_sf_load() has called
spi_flash_free()).

Implement ->remove() and call spi_flash_mtd_unregister() from there.

Fixes: 9fe6d8716e ("mtd, spi: Add MTD layer driver")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-12-06 00:45:36 +05:30
Boris Brezillon
4a5594fa20 mtd: Don't stop MTD partition creation when it fails on one device
MTD partition creation code is a bit tricky. It tries to figure out
when things have changed (either MTD dev list or mtdparts/mtdids vars)
and when that happens it first deletes all the partitions that had been
previously created and then creates the new ones based on the new
mtdparts/mtdids values.
But before deleting the old partitions, it ensures that none of the
currently registered parts are being used and bails out when that's
not the case. So, we end up in a situation where, if at least one MTD
dev has one of its partitions used by someone (UBI for instance), the
partitions update logic no longer works for other devs.

Rework the code to relax the logic and allow updates of MTD parts on
devices that are not being used (we still refuse to updates parts on
devices who have at least one of their partitions used by someone).

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
2428d9160b mtd: Make sure we don't parse MTD partitions belonging to another dev
The mtdparts variable might contain partition definitions for several
MTD devices. Each partition layout is separated by a ';', so let's
make sure we don't pick a wrong name when mtdparts is malformed.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
772aa97993 mtd: Make sure the name passed in mtdparts fits in mtd_name[]
The local mtd_name[] variable is limited in size. Return an error if
the name passed in mtdparts does not fit in this local var.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
429e048e41 mtd: Be more strict on the "mtdparts=" prefix check
strstr() does not guarantee that the string we're searching for is
placed at the beginning. Use strncmp() instead.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
96b06434e5 mtd: Use get_mtdids() instead of env_get("mtdids") in mtd_search_alternate_name()
The environment is not guaranteed to contain a valid mtdids variable
when called from mtd_search_alternate_name(). Call get_mtdids() instead
of env_get("mtdids").

Fixes: ff4afa8a98 ("mtd: uboot: search for an equivalent MTD name with the mtdids")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
492151b209 mtd: sf: Make sure we don't register the same device twice
spi_flash_mtd_register() can be called several times and each time it
will register the same mtd_info instance like if it was a new one.
The MTD ID allocation gets crazy when that happens, so let's track the
status of the sf_mtd_info object to avoid that.

Fixes: 9fe6d8716e ("mtd, spi: Add MTD layer driver")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-12-06 00:45:36 +05:30
Boris Brezillon
a02820fca9 mtd: Delete partitions attached to the device when a device is deleted
If we don't do that, partitions might still be exposed while the
underlying device is gone.

Fixes: 2a74930da5 ("mtd: mtdpart: implement proper partition handling")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
779c9c0565 mtd: Parse mtdparts/mtdids again when the MTD list has been updated
Updates to the MTD device list should trigger a new parsing of the
mtdids/mtdparts vars even if those vars haven't changed.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Boris Brezillon
4c47fd0b6b mtd: Add a function to report when the MTD dev list has been updated
We need to parse mtdparts/mtids again everytime a device has been
added/removed from the MTD list, but there's currently no way to know
when such an update has been done.

Add an ->updated field to the idr struct that we set to true every time
a device is added/removed and expose a function returning the value
of this field and resetting it to false.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Heiko Schocher <hs@denx.de>
2018-12-06 00:45:36 +05:30
Martin Lund
1cefca71d2 mtd: nand: Arasan: Add subpage configuration support
Add support for disabling subpage write support via
CONFIG_SYS_NAND_NO_SUBPAGE_WRITE.

Currently the Linux Arasan driver does not support subpage writes and in
case of running UBI and accessing the same UBI volume from both U-Boot
and Linux it is required to have the same subpage write configuration
else the location of the UBI headers (EC + VID) will be misaligned
(subpage vs page) and incompatible. Hence the need for disabling
subpage write support in the U-Boot Arasan NAND driver.

Signed-off-by: Martin Lund <malu@gomspace.com>
Acked-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-11-26 10:50:54 +01:00
Miquel Raynal
c907464a0a mtd: rawnand: pxa3xx: fix 2kiB pages with 8b strength chips layout
The initial layout for such NAND chips was the following:

+----------------------------------------------------------------------------+
| 1024 (data) | 30 (ECC) | 1024 (data) | 30 (ECC) | 32 (free OOB) | 30 (ECC) |
+----------------------------------------------------------------------------+

This layout has a weakness: reading empty pages trigger ECC errors
(this is expected), but the hardware ECC engine tries to correct the
data anyway and creates itself bitflips, hence bitflips are detected
in erased pages while actually there are none in the NAND chip.

Two solutions have been found at the same time. One was to enlarge the
free OOB area to 64 bytes, changing the layout to be:

+----------------------------------------------------------------------------+
| 1024 (data) | 30 (ECC) | 1024 (data) | 30 (ECC) | 64 (free OOB) | 30 (ECC) |
+----------------------------------------------------------------------------+
                                                    ^^

The very big drawbacks of this solution are:
1/ It prevents booting from NAND.
2/ The current Linux driver (marvell_nand) does not have such problem
because it already re-reads possible empty pages in raw mode before
checking for bitflips. Using different layouts in U-Boot and Linux
would simply not work.

As this driver does support raw reads now and uses it to check for
empty pages, let's forget about this broken hack and return to the
initial layout with only 32 free OOB bytes.

Fixes: ac56a3b30c ("mtd: nand: pxa3xx: add support for 2KB 8-bit flash")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-11-22 11:38:13 +05:30
Miquel Raynal
af61ea27f5 mtd: nand: pxa3xx: re-read a page in raw mode on uncorrectable error
This only applies on BCH path.

When an empty page is read, it triggers an uncorrectable error. While
this is expected, the ECC engine might produce itself bitflips in the
read data under certain layouts. To overcome this situation, always
re-read the entire page in raw mode and check for the whole page to be
empty.

Also report the right number of bitflips if there are any.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-11-22 11:38:05 +05:30
Miquel Raynal
6293b0361d mtd: nand: pxa3xx: add raw read support
Raw read support is added by editing a few code sections:

    ->handle_data_pio() includes the ECC bytes that are not consumed
    anymore by the ECC engine.

    ->prepare_set_command() is changed so that the ECC bytes are
    requested as part of the data I/O length.

    ->drain_fifo() shall also avoid checking the R/B pin too often
    when in raw mode.

    ->read_page_raw()/->read_oob_raw() are written from scratch.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-11-22 11:37:44 +05:30
Simon Glass
a58986ca8b sf: Add a method to obtain the block-protect setting
It is useful to obtain the block-protect setting of the SPI flash, so we
know whether it is fully open or (perhaps partially) write-protected. Add
a method for this. Update the sandbox driver to process this operation and
add a test.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-20 19:14:22 -07:00
Vladimir Zapolskiy
44cdfc0ece mtd: nand: lpc32xx slc: disable DMA support in SPL builds
Testing and analysis shows that at the moment LPC32xx NAND SLC driver
can not get PL080 DMA backbone support in SPL build, because SPL NAND
loaders operate with subpage (ECC step to be precisely) reads, and
this is not supported in the NAND SLC + DMA + hardware ECC calculation
bundle.

The change removes a cautious build time warning and explicitly
disables DMA flavour of the driver for SPL builds, to reduce the
amound of #ifdef sections the code blocks are minimally reorganized.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
2018-11-16 13:34:37 -05:00
Vladimir Zapolskiy
a098ce2142 mtd: nand: lpc32xx mlc: predefine number of NAND chips to support
Build option CONFIG_SYS_MAX_NAND_CHIPS is used by NXP LPC32xx NAND MLC
driver only, as a preparation for potential removal or replacement of
the option the change predefines CONFIG_SYS_MAX_NAND_CHIPS to 1, same
value is used by the single user Work Microwave Work 92105 board, thus
it will be safe now to remove the option as a board specific one.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-11-16 13:34:36 -05:00
Boris Brezillon
1f758b7936 mtd: Drop duplicate MTD_PARTITIONS Kconfig option
Commit 9c5b00973b ("Convert CONFIG_MTD_PARTITIONS et al to Kconfig")
introduced a publicly visible Kconfig entry for the
CONFIG_MTD_PARTITIONS option, while the rework on MTD partitioning
was in progress, and we somehow did not notice that the same Kconfig
entry was added by commit 4048a5c519 ("mtd: declare MTD_PARTITIONS
symbol in Kconfig"), but this time as an invisible entry (this can
only be selected by other options).

Keep the non-visible version of this symbol, since MTD_PARTITIONS is
not something the user should be able to enable/disable directly.

Fixes: 4048a5c519 ("mtd: declare MTD_PARTITIONS symbol in Kconfig")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-11-13 18:53:10 +05:30
Boris Brezillon
5ffcd50612 mtd: Use default mtdparts/mtids when not defined in the environment
U-boot provides a mean to define default values for mtdids and mtdparts
when they're not defined in the environment. Patch mtd_probe_devices()
to use those default values when env_get("mtdparts") or
env_get("mtdids") return NULL.

This implementation is based on the logic found in cmd/mtdparts.c.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Reported-by: Stefan Roese <sr@denx.de>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Stefan Roese <sr@denx.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-11-13 18:53:10 +05:30
Bin Meng
ed5df0852f nand: atmel: Initialize pmecc smu with correct size
Currently in pmecc_get_sigma(), the code tries to clear the memory
pointed by smu with wrong size 'sizeof(int16_t) * ARRAY_SIZE(smu)'.
Since smu is actually a pointer, not an array, so ARRAY_SIZE(smu)
does not generate correct size to be cleared.

In fact, GCC 8.1.0 reports a warning against it:

error: division 'sizeof (int16_t * {aka short int *}) / sizeof (int16_t
{aka short int})' does not compute the number of array elements
[-Werror=sizeof-pointer-div]

Fix it by using the correct size.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-22 09:18:49 -04:00
Adam Ford
2fe88d4522 Convert CONFIG_FLASH_CFI_DRIVER et al to Kconfig
This converts the following to Kconfig:
   CONFIG_FLASH_CFI_DRIVER
   CONFIG_SYS_FLASH_USE_BUFFER_WRITE
   CONFIG_FLASH_CFI_MTD
   CONFIG_SYS_FLASH_PROTECTION
   CONFIG_SYS_FLASH_CFI

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Re-migrate]
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-10-19 19:19:50 -04:00
Tom Rini
e6cd05e502 Merge branch 'master' of git://git.denx.de/u-boot-spi 2018-10-12 11:54:13 -04:00
Ashish Kumar
5c391486b4 sf: Add MICRON manufacturer id
NOR flash name MT35X_QLKA and MT25Q_** used on NXP board has
manufacturer id as 0x2C, which are rather for newer flashes
after the split of Micron from ST.

So macro for this micron manufacturer id.

Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
[jagan: updated commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2018-10-12 11:37:49 +05:30
Adam Ford
c8602061a7 mtd: uboot: Fix hanging during mtd list command
Some boards (like omap3_logic) hang when trying to access
address 0. This happens when executing the new 'mtd list' command.
This patch enhances the checks for conditions that would
preclude mtd_probe_devices() from operating.

Fixes: 5db66b3aee ("cmd: mtd: add 'mtd' command")
Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-10-10 11:34:10 +05:30
Simon Glass
5e24a2ef8b dm: spi: Add logging of some return values
When SPI flash operations fail it is helpful to be able to see the error
codes and where they are generated. Add logging to capture this
information for read operations.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
97f57109bb sf: Avoid allocating memory on every read operation
At present spi_flash_cmd_read_ops() allocates and frees a few bytes of
memory every time it is called. It is faster to use the stack for this
and this is now supported by the minimum GCC version required by U-Boot.

Remove the allocation and use a variable-sized array instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
66613f5dd2 dm: spi: Clean up detection of sandbox SPI emulator
Now that we don't have to deal with the command-line flag we can simplify
the code for detecting the emulator. Remove the lookup based on the SPI
specification, relying just on the device tree to locate the emulator.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
c3aed5db59 sandbox: spi: Add more logging
Add logging to aid debugging features in these drivers. Also drop some
code in sandbox_spi_xfer() which is not used.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:27 -06:00
Simon Glass
1289e96797 sandbox: spi: Drop command-line SPI option
At present we support specifying SPI flash devices to use in the device
tree and on the command line. Drop the second option, since it is a pain
to support nicely with driver model, and unnecessary.

Signed-off-by: Simon Glass <sjg@chromium.org>
2018-10-09 04:40:26 -06:00
Stefan Roese
9e5c2a755a mtd: nand: spi: Add Gigadevice SPI NAND support
This patch adds support for Gigadevices SPI NAND device to the new SPI
NAND infrastructure in U-Boot. Currently only the 128MiB GD5F1GQ4UC
device is supported.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Boris Brezillon <boris.brezillon@bootlin.com>
Cc: Jagan Teki <jagan@openedev.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-10-04 18:24:24 +05:30
Stefan Roese
881e4fc206 sf: Add XMC xm25qh64a and xm25qh128a entries
This patch adds support for 2 new XMC (Wuhan Xinxin Semiconductor
Manufacturing Corp) SPI NOR chips.

This support can be enabled by selecting the SPI_FLASH_XMC Kconfig
option.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-10-04 18:21:23 +05:30
Miquel Raynal
5db66b3aee cmd: mtd: add 'mtd' command
There should not be a 'nand' command, a 'sf' command and certainly not
a new 'spi-nand' command. Write a 'mtd' command instead to manage all
MTD devices/partitions at once. This should be the preferred way to
access any MTD device.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-10-02 22:12:32 +05:30
Miquel Raynal
2a74930da5 mtd: mtdpart: implement proper partition handling
Instead of collecting partitions in a flat list, create a hierarchy
within the mtd_info structure: use a partitions list to keep track of
the partitions of an MTD device (which might be itself a partition of
another MTD device), a pointer to the parent device (NULL when the MTD
device is the root one, not a partition).

By also saving directly in mtd_info the offset of the partition, we
can get rid of the mtd_part structure.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-10-02 22:12:32 +05:30
Miquel Raynal
ff4afa8a98 mtd: uboot: search for an equivalent MTD name with the mtdids
Using an MTD device (resp. partition) name in mtdparts is simple and
straightforward. However, for a long time already, another name was
given in mtdparts to indicate a device (resp. partition) so the
"mtdids" environment variable was created to do the match.

Let's create a function that, from an MTD device (resp. partition)
name, search for the equivalent name in the "mtdparts" environment
variable thanks to the "mtdids" string.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-10-02 22:12:32 +05:30
Miquel Raynal
21cc1fb5af mtd: mtdpart: add a generic mtdparts-like parser
The current parser is very specific to U-Boot mtdparts implementation.
It does not use MTD structures like mtd_info and mtd_partition. Copy
and adapt the current parser in drivers/mtd/mtd-uclass.c (to not break
the current use of mtdparts.c itself) and write some kind of a wrapper
around the current implementation to allow other commands to benefit
from this parsing in a user-friendly way.

This new function will allocate an mtd_partition array for each
successful call. This array must be freed after use by the caller.
The given 'mtdparts' buffer pointer will be moved forward to the next
MTD device (if any, it will point towards a '\0' character otherwise).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-10-02 22:12:31 +05:30
Miquel Raynal
e9f62db64b mtd: uclass: add probe function
The user might want to trigger the probe of any MTD device, export these
functions so they can be called from a command source file.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-10-02 22:12:31 +05:30
Miquel Raynal
b0036f7004 mtd: mtdpart: balance debug messages
Balance debug message in the partition allocation/removal process in
order to keep track of them more easily.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-09-20 20:10:49 +05:30
Miquel Raynal
4048a5c519 mtd: declare MTD_PARTITIONS symbol in Kconfig
UBI selects MTD_PARTITIONS which is the symbol to compile
drivers/mtd/mtdpart.c. Unfortunately, the symbol was not defined in
Kconfig and this worked only with board files defining it. Fix this by
adding a boolean in Kconfig so boards defined by defconfig files only
will work as expected.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-09-20 20:10:49 +05:30
Miquel Raynal
515d021261 mtd: spinand: Add initial support for the MX35LF2GE4AB chip
Add support for the MX35LF2GE4AB chip, which is similar to its cousin
MX35LF1GE4AB, with two planes instead of one.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Boris Brezillon
6f041ccabb mtd: spinand: Add initial support for the MX35LF1GE4AB chip
Add minimal support for the MX35LF1GE4AB SPI NAND chip.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Frieder Schrempf
3181c0a622 mtd: spinand: Add initial support for Winbond W25M02GV
Add support for the W25M02GV chip.

Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Peter Pan
883d8778ae mtd: spinand: Add initial support for Micron MT29F2G01ABAGD
Add a basic driver for Micron SPI NANDs. Only one device is supported
right now, but the driver will be extended to support more devices
afterwards.

Signed-off-by: Peter Pan <peterpandong@micron.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Peter Pan
0a6d6bae03 mtd: nand: Add core infrastructure to support SPI NANDs
Add a SPI NAND framework based on the generic NAND framework and the
spi-mem infrastructure.

In its current state, this framework supports the following features:

- single/dual/quad IO modes
- on-die ECC

Signed-off-by: Peter Pan <peterpandong@micron.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Boris Brezillon
b95db8d33a mtd: nand: Add core infrastructure to deal with NAND devices
Add an intermediate layer to abstract NAND device interface so that
some logic can be shared between SPI NANDs, parallel/raw NANDs,
OneNANDs, ...

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Miquel Raynal
3657b2f4a3 mtd: rename nand into rawnand in Kconfig prompt
Sync the Kconfig raw NAND entry title with the code architecture.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-09-20 20:10:49 +05:30
Miquel Raynal
a430fa06a4 mtd: move NAND files into a raw/ subdirectory
NAND flavors, like serial and parallel, have a lot in common and would
benefit to share code. Let's move raw (parallel) NAND specific code in a
raw/ subdirectory, to ease the addition of a core file in nand/ and the
introduction of a spi/ subdirectory specific to SPI NANDs.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-09-20 20:10:49 +05:30
Miquel Raynal
ce9bdc8743 mtd: move all flash categories inside MTD submenu
There is no reason to have NAND, SPI flashes and UBI sections outside of
the MTD submenu in Kconfig.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-09-20 20:10:49 +05:30
Miquel Raynal
d02f1d36ec mtd: move definitions to enlarge their range
Some helpers might be useful in a future 'mtd' U-Boot command to parse
MTD device list.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-09-20 20:10:49 +05:30