Currently the spl system calls nand_init which does nothing.
It isn't until an attempt to load from NAND that it gets initialized.
Subsequent attempts to load just skip the initialization because
NAND is already initialized.
This moves the contents of mxs_nand_init to nand_init. In the event
of an error, it clears the number of nand chips found. Any
attempts to use nand will check if there are nand chips available
instead of actually doing the initialization at that time. If there
are none, it will return an error to the higher level calls.
Signed-off-by: Adam Ford <aford173@gmail.com>
The initialization of the NAND in SPL hard-coded ecc.bytes,
ecc.size, and ecc.strength which may work for some NAND parts,
but it not appropriate for others. With the pending patch
"mxs_nand: Fix BCH read timeout error on boards requiring ECC"
the driver can auto configure the ECC when these entries are
blank. This patch has been tested in NAND flash with oob 64
and oob 128.
Signed-off-by: Adam Ford <aford173@gmail.com>
Tested-by: Jörg Krause <joerg.krause@embedded.rocks>
Acked-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
mxs_nand_init_dma is only referenced from mxs_nand.c. It's not
referenced in any headers or outside code, so this patch
defines it as static.
Signed-off-by: Adam Ford <aford173@gmail.com>
The LogicPD board uses a Micron Flash with ECC. To boot this from
SPL, the ECC needs to be correctly configured or the BCH engine
times out.
Signed-off-by: Adam Ford <aford173@gmail.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
Tested-by: Jörg Krause <joerg.krause@embedded.rocks>
Acked-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Add a tiny SPI flash stack that just supports reading data/images from
SPI flash. This is useful for boards that have SPL size constraints and
would need to use SPI flash framework just to read images/data from
flash. There is approximately 1.5 to 2KB savings with this.
Based on prior work of reducing spi flash id table by
Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
spi_flash and spi_flash_ids are no longer needed after SPI NOR
migration. Remove them.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Switch spi_flash_* interfaces to call into new SPI NOR framework via MTD
layer. Fix up sf_dataflash to work in legacy way. And update sandbox to
use new interfaces/definitions
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Linux uses "jedec,spi-nor" as compatible string for JEDEC compatible
SPI Flash device nodes. Therefore make U-Boot also to look for the same
compatible string so that we can use Linux DTS files as is.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
For legacy reasons, we will have to keep around U-Boot specific
SPI_FLASH_BAR and SPI_TX_BYTE. Add them back to the new framework
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Sync Serial Flash Discoverable Parameters (SFDP) parsing support from
Linux. This allows auto detection and configuration of Flash parameters.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Sync changes from Linux SPI NOR framework to add 4 byte addressing
support. This is required in order to support flashes like MT35x
that no longer support legacy Bank Address Register(BAR) way of accessing
>16MB region.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Many SPI controllers have special MMIO interfaces which provide
accelerated read/write access but require knowledge of flash parameters
to make use of it. Recent spi-mem layer provides a way to support such
controllers.
Therefore, add spi-mem support to spi-nor-core as a way to support SPI
controllers with MMIO interface. SPI MEM layer takes care of translating
spi_mem_ops to spi_xfer()s in case of legacy SPI controllers.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Current U-Boot SPI NOR support (sf layer) is quite outdated as it does not
support 4 byte addressing opcodes, SFDP table parsing and different types of
quad mode enable sequences. Many newer flashes no longer support BANK
registers used by sf layer to a access >16MB of flash address space.
So, sync SPI NOR framework from Linux v4.19 that supports all the
above features. Start with basic sync up that brings in basic framework
subsequent commits will bring in more features.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
The initialization function calls a nand_chip.scan_bbt(mtd) but
scan_bbt is never initialized resulting in an undefined function
pointer. This will direct the function pointer to nand_default_bbt
defined in the same file.
Signed-off-by: Adam Ford <aford173@gmail.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
This patch adds support for nand multi chip select.
Also adding CONFIG_SYS_NAND_MAX_CHIPS to Kconfig to specify maximum number
of nand chips.
Signed-off-by: Tummala Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Each ECC layout consumes about 2984 bytes in the .data section. Allow
to disable the default ECC layouts if a driver is known to provide its
own ECC layout.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
This patch adds Hynix H27UBG8T2BTR id table as part of raw nand,
these chips were available in some A20-olinuxino-micro boards.
Signed-off-by: Nikolai Zhubr <n-a-zhubr@yandex.ru>
[jagan: add proper commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This commit adds support for device tree and enumeration via device model
for the Vybrid's NFC NAND driver.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This commit provides code to add proper entry to Kconfig to enable
support for VF610 device tree aware driver.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Without this change it is possible that Vybrid's NFC driver malloc() call
will obtain some memory used (and correctly free'd) by some previous
driver (in this case pinctrl for Vybrid).
As a result some fields of struct nfc - in out case mtd->_get_device - are
"pre initialized" with some random values.
On the latter stage of booting, when e.g. somebody calls 'mtdparts default'
the "data abort" is observed when __get_mtd_device() function is called.
The mtd->_get_device pointer is not NULL and wrong value is referenced.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Stefan Agner <stefan.agner@toradex.com>
Based on Linux commit cf51e4b9c34407bf0c3d9b582b7837e047e1df47
Add the register read-back, commenting why this is necessary.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Based on Linux commit 1dfac31a5a63ac04a9b5fbc3f5105a586560f191
This commit improves the ->setup_data_interface() hook.
The denali_setup_data_interface() needs the frequency of clk_x
and the ratio of clk_x / clk.
The latter is currently hardcoded in the driver, like this:
#define DENALI_CLK_X_MULT 6
The IP datasheet requires that clk_x / clk be 4, 5, or 6. I just
chose 6 because it is the most defensive value, but it is not optimal.
By getting the clock rate of both "clk" and "clk_x", the driver can
compute the timing values more precisely.
To not break the existing platforms, the fallback value, 50 MHz is
provided. It is true for all upstreamed platforms.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Based on Linux commit 6f1fe97bec349a1fd6c5a8c7c5998d759fe721d5
Currently, denali_dt.c requires a single anonymous clock, but
the Denali User's Guide requires three clocks for this IP:
- clk: controller core clock
- clk_x: bus interface clock
- ecc_clk: clock at which ECC circuitry is run
This commit supports these named clocks to represent the real hardware.
For the backward compatibility, the driver still accepts a single clock
just as before. The clk_x_rate is taken from the clock driver again if
the named clock "clk_x" is available. This will happen only for future
DT, hence the existing DT files are not affected.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
