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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux into mtd/next
CFI changes
Just a couple of fixes for v5.13-rc1
* Disable broken buffered writes for CFI chips within ID 0x2201
* Address a Coverity report for unused value
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD fix from Richard Weinberger:
"Fix WAITRDY break condition and timeout in mtk nand driver"
* tag 'fixes-for-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: rawnand: mtk: Fix WAITRDY break condition and timeout
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This reverts commit 04b8edad262eec0d153005973dfbdd83423c0dcb.
mx25l51245g and mx66l51235l have the same flash ID. The flash
detection returns the first entry in the flash_info array that
matches the flash ID that was read, thus for the 0xc2201a ID,
mx25l51245g was always hit, introducing a regression for
mx66l51235l.
If one wants to differentiate the flash names, a better fix would be
to differentiate between the two at run-time, depending on SFDP,
and choose the correct name from a list of flash names, depending on
the SFDP differentiator.
Fixes: 04b8edad262e ("mtd: spi-nor: macronix: Add support for mx25l51245g")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210402082031.19055-2-tudor.ambarus@microchip.com
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If rmmod the driver during read or write, the driver will release the
resources which are used during read or write, so it is possible to
refer to NULL pointer.
Use the testcase "mtd_debug read /dev/mtd0 0xc00000 0x400000 dest_file &
sleep 0.5;rmmod spi_hisi_sfc_v3xx.ko", the issue can be reproduced in
hisi_sfc_v3xx driver.
To avoid the issue, fill the interface _get_device and _put_device of
mtd_info to grab the reference to the spi controller driver module, so
the request of rmmod the driver is rejected before read/write is finished.
Fixes: b199489d37b2 ("mtd: spi-nor: add the framework for SPI NOR")
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1617262486-4223-1-git-send-email-yangyicong@hisilicon.com
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The variable timeo is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20210325174514.486272-1-colin.king@canonical.com
Addresses-Coverity: ("Unused value")
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Buffer writes do not work with AMD chip 0x2201. The chip in question
is a AMD/Spansion/Cypress Semiconductor S29GL256N and datasheet [1]
talks about writing buffers being possible. While waiting for a neater
solution resort to writing word-sized chunks only.
Without the patch kernel logs will be flooded with entries like below:
jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
jffs2_build_filesystem(): unlocking the mtd device...
done.
jffs2_build_filesystem(): erasing all blocks after the end marker...
MTD do_write_buffer_wait(): software timeout, address:0x01ec000a.
jffs2: Write clean marker to block at 0x01920000 failed: -5
MTD do_write_buffer_wait(): software timeout, address:0x01e2000a.
jffs2: Write clean marker to block at 0x01880000 failed: -5
MTD do_write_buffer_wait(): software timeout, address:0x01e0000a.
jffs2: Write clean marker to block at 0x01860000 failed: -5
MTD do_write_buffer_wait(): software timeout, address:0x01dc000a.
jffs2: Write clean marker to block at 0x01820000 failed: -5
MTD do_write_buffer_wait(): software timeout, address:0x01da000a.
jffs2: Write clean marker to block at 0x01800000 failed: -5
...
Tested on a Buffalo wzr-hp-g300nh running kernel 5.10.16.
[1] https://www.cypress.com/file/219941/download
or https://datasheetspdf.com/pdf-file/565708/SPANSION/S29GL256N/1
Signed-off-by: Mauri Sandberg <sandberg@mailfence.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20210309174859.362060-1-sandberg@mailfence.com
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dma_mapping_error() should be used for checking the error value of
dma_map_resource() API.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210405050912.115591-1-manivannan.sadhasivam@linaro.org
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If the callee gpmi_alloc_dma_buffer() failed to alloc memory for
this->raw_buffer, gpmi_free_dma_buffer() will be called to free
this->auxiliary_virt. But this->auxiliary_virt is still a non-NULL
and valid ptr.
Then gpmi_alloc_dma_buffer() returns err and gpmi_free_dma_buffer()
is called again to free this->auxiliary_virt in err_out. This causes
a double free.
As gpmi_free_dma_buffer() has already called in gpmi_alloc_dma_buffer's
error path, so it should return err directly instead of releasing the dma
buffer again.
Fixes: 4d02423e9afe6 ("mtd: nand: gpmi: Fix gpmi_nand_init() error path")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210403060905.5251-1-lyl2019@mail.ustc.edu.cn
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Add missing nand_cleanup() in the alloc_bam_transaction() error path
to cleanup the resources properly.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210402150128.29128-5-manivannan.sadhasivam@linaro.org
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On a typical end product, a vendor may choose to secure some regions in
the NAND memory which are supposed to stay intact between FW upgrades.
The access to those regions will be blocked by a secure element like
Trustzone. So the normal world software like Linux kernel should not
touch these regions (including reading).
The regions are declared using a NAND chip DT property,
"secure-regions". So let's make use of this property in the raw NAND
core and skip access to the secure regions present in a system.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210402150128.29128-4-manivannan.sadhasivam@linaro.org
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With all the helper functions in place, add OTP support for the Winbond
W25Q32JW and W25Q32FW.
Both were tested on a LS1028A SoC with a NXP FSPI controller.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20210321235140.8308-4-michael@walle.cc
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Use the new OTP ops to implement OTP access on Winbond flashes. Most
Winbond flashes provides up to four different OTP regions ("Security
Registers").
Winbond devices use a special opcode to read and write to the OTP
regions, just like the RDSFDP opcode. In fact, it seems that the
(undocumented) first OTP area of the newer flashes is the actual SFDP
table.
On a side note, Winbond devices also allow erasing the OTP regions as
long as the area isn't locked down.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20210321235140.8308-3-michael@walle.cc
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SPI flashes sometimes have a special OTP area, which can (and is) used to
store immutable properties like board serial number or vendor assigned
network hardware addresses.
The MTD subsystem already supports accessing such areas and some (non
SPI NOR) flashes already implement support for it. It differentiates
between user and factory areas. User areas can be written by the user and
factory ones are pre-programmed and locked down by the vendor, usually
containing an "electrical serial number". This patch will only add support
for the user areas.
Lay the foundation and implement the MTD callbacks for the SPI NOR and add
necessary parameters to the flash_info structure. If a flash supports OTP
it can be added by the convenience macro OTP_INFO(). Sometimes there are
individual regions, which might have individual offsets. Therefore, it is
possible to specify the starting address of the first regions as well as
the distance between two regions (e.g. Winbond devices uses this method).
Additionally, the regions might be locked down. Once locked, no further
write access is possible.
For SPI NOR flashes the OTP area is accessed like the normal memory, e.g.
by offset addressing; except that you either have to use special read/write
commands (Winbond) or you have to enter (and exit) a specific OTP mode
(Macronix, Micron).
Thus we introduce four operations to which the MTD callbacks will be
mapped: .read(), .write(), .lock() and .is_locked(). The read and the write
ops will be given an address offset to operate on while the locking ops use
regions because locking always affects a whole region. It is up to the
flash driver to implement these ops.
Signed-off-by: Michael Walle <michael@walle.cc>
[ta: use div64_u64(), IS_ALIGNED, params->otp.org. unsigned int region,
drop comment, add rlen local variable in spi_nor_mtd_otp_lock()]
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20210321235140.8308-2-michael@walle.cc
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- bool return value for spi_nor_check_lock_status_sr(), gets rid of
the return 1,
- introduce temporary variables for better readability.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20210322075131.45093-3-tudor.ambarus@microchip.com
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It makes the core file a bit smaller and provides better separation
between the Software Write Protection features and the core logic.
All the next generic software write protection features (e.g. Individual
Block Protection) will reside in swp.c.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210322075131.45093-2-tudor.ambarus@microchip.com
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The blocks containing the bad block table can become bad as well. So
make sure to skip any blocks that are marked bad when searching for the
bad block table.
Otherwise in very rare cases where two BBT blocks wear out it might
happen that an obsolete BBT is used instead of a newer available
version.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210325102337.481172-1-s.riedmueller@phytec.de
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This allows extending ofpart parser with support for Linksys Northstar
devices. That support uses recently added quirks mechanism.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210312134919.7767-2-zajec5@gmail.com
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Partitions that contains the nvmem-cells compatible will register
their direct subonodes as nvmem cells and the node will be treated as a
nvmem provider.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Tested-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210312062830.20548-1-ansuelsmth@gmail.com
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This may sound like a contradiction but some SPI-NOR flashes really
support erasing their OTP region until it is finally locked. Having the
possibility to erase an OTP region might come in handy during
development.
The ioctl argument follows the OTPLOCK style.
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210303201819.2752-1-michael@walle.cc
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MEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require
write permission. Depending on the hardware MEMLOCK might even be
write-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK
is always write-once.
MEMSETBADBLOCK modifies the bad block table.
Fixes: f7e6b19bc764 ("mtd: properly check all write ioctls for permissions")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210303155735.25887-1-michael@walle.cc
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The module misses MODULE_DEVICE_TABLE() for both SPI and OF ID tables
and thus never autoloads on ID matches.
Add the missing declarations.
Present since day-0 of spinand framework introduction.
Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs")
Cc: stable@vger.kernel.org # 4.19+
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210323173714.317884-1-alobakin@pm.me
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Suppresses the following coccinelle warning:
drivers/mtd/nand/raw/rockchip-nand-controller.c:162:4-8: WARNING use flexible-array member instead
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210323131137.45552-1-zou_wei@huawei.com
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Update MTD ECC statistics with the number of corrected bits.
Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver")
Cc: stable@vger.kernel.org
Signed-off-by: Kai Stuhlemmer (ebee Engineering) <kai.stuhlemmer@ebee.de>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210322150714.101585-1-tudor.ambarus@microchip.com
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i.MX is a DT-only platform, so of_match_ptr() can be safely
removed.
Remove the unneeded of_match_ptr().
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210316000042.200392-1-festevam@gmail.com
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The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/1615770495-31939-1-git-send-email-tiantao6@hisilicon.com
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This change makes sure that Broadcom NAND driver moves to interrupt
polling on the first brcmnand_write() call.
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210311170909.9031-2-kdasu.kdev@gmail.com
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Added support to read/write oob during EDU transfers.
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210311170909.9031-1-kdasu.kdev@gmail.com
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MODULE_SUPPORTED_DEVICE was added in pre-git era and never was
implemented. We can safely remove it, because the kernel has grown
to have many more reliable mechanisms to determine if device is
supported or not.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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s/legacy/default. spi_nor_info_init_params initializes some default
flash parameters and settings that can be overwritten when parsing
SFDP, or by fixup hooks. There's nothing legacy about them, they are
just some default settings, if not otherwise discovered or specified.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210315055634.17332-1-tudor.ambarus@microchip.com
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spi_nor_parse_sfdp(nor, nor->params);
passes for the second argument a member within the first argument.
Drop the second argument and obtain it directly from the first,
and do it across all the children functions. This is a follow up for
'commit 69a8eed58cc0 ("mtd: spi-nor: Don't copy self-pointing struct around")'
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210306095002.22983-4-tudor.ambarus@microchip.com
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Useful when debugging non-uniform erase.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210306095002.22983-3-tudor.ambarus@microchip.com
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addr and len were gratuitously updated even when spi_nor_wait_till_ready()
failed. Wait for the erase cmd to complete and then advance the erase.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20210306095002.22983-2-tudor.ambarus@microchip.com
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This fixes NAND_OP_WAITRDY_INSTR operation in the driver. Without this
change the driver waits till the system is busy, but we should wait till
the busy flag is cleared. The readl_poll_timeout() function gets a break
condition, not a wait condition.
In addition fix the timeout. The timeout_ms is given in ms, but the
readl_poll_timeout() function takes the timeout in us. Multiple the
given timeout by 1000 to convert it.
Without this change, the driver does not work at all, it doesn't even
identify the NAND chip.
Fixes: 5197360f9e09 ("mtd: rawnand: mtk: Convert the driver to exec_op()")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210309000107.1368404-1-hauke@hauke-m.de
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In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
of warnings by explicitly adding a couple of break statements instead
of letting the code fall through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210305082953.GA137771@embeddedor
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In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210305082559.GA137646@embeddedor
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In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210305082356.GA137489@embeddedor
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In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210305082224.GA137360@embeddedor
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In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements and a return
instead of letting the code fall through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210305081933.GA137147@embeddedor
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When platform_get_drvdata() returns NULL to info, no error return code
of physmap_flash_remove() is assigned.
To fix this bug, err is assigned with -EINVAL in this case
Fixes: 73566edf9b91 ("[MTD] Convert physmap to platform driver")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210308034446.3052-1-baijiaju1990@gmail.com
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The sparse tool complains as follows:
drivers/mtd/parsers/ofpart_core.c:25:32: warning:
symbol 'bcm4908_partitions_quirks' was not declared. Should it be static?
This symbol is not used outside of ofpart_core.c, so this
commit marks it static.
Fixes: 457da931b608 ("mtd: parsers: ofpart: support BCM4908 fixed partitions")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210304064600.3279138-1-weiyongjun1@huawei.com
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Partition size and offset value are in block size units, which is the
same as 'erasesize'. But when 4K sectors are enabled erasesize is set to
4K. Bail out in that case.
Fixes: 803eb124e1a64 ("mtd: parsers: Add Qcom SMEM parser")
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/0a2611f885b894274436ded3ca78bc0440fca74a.1614790096.git.baruch@tkos.co.il
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qcom_smem_get() does not return NULL, and even if it did, the NULL
condition is usually not an error but a success condition and should
not trigger an error trace.
Let's replace IS_ERR_OR_NULL() by IS_ERR().
This fixes the following smatch warning:
drivers/mtd/parsers/qcomsmempart.c:109 parse_qcomsmem_part() warn: passing zero to 'PTR_ERR'
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 803eb124e1a6 ("mtd: parsers: Add Qcom SMEM parser")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210303084634.12796-1-miquel.raynal@bootlin.com
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For backward compatibility ofpart still supports the old syntax like:
spi-flash@0 {
compatible = "jedec,spi-nor";
reg = <0x0>;
partition@0 {
label = "bootloader";
reg = <0x0 0x100000>;
};
};
(without "partitions" subnode).
There is no reason however to support nested partitions without a clear
"compatible" string like:
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "bootloader";
reg = <0x0 0x100000>;
partition@0 {
label = "config";
reg = <0x80000 0x80000>;
};
};
};
(we never officially supported or documented that).
Make sure ofpart doesn't attempt to parse above.
Cc: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210302190012.1255-1-zajec5@gmail.com
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Some devices use fixed partitioning with some partitions requiring some
extra logic. E.g. BCM4908 may have multiple firmware partitions but
detecting currently used one requires checking bootloader parameters.
To support such cases without duplicating a lot of code (without copying
most of the ofpart.c code) support for post-parsing callback was added.
BCM4908 support in ofpart can be enabled using config option and results
in compiling & executing a specific callback. It simply reads offset of
currently used firmware partition from the DT. Bootloader specifies it
using the "brcm_blparms" property.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210301105823.31032-1-zajec5@gmail.com
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The bdi name is not modified by the function, it should be const.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210225143329.430012-1-tomas.winkler@intel.com
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The Qcom MIBIB partition might be stored on SPI flash devices, and the
parser works in this case just as well:
[ 1.404229] spi_qup 78b5000.spi: IN:block:16, fifo:64, OUT:block:16, fifo:64
[ 1.408078] spi-nor spi0.0: found mx25u6435f, expected n25q128a11
[ 1.415016] spi-nor spi0.0: mx25u6435f (8192 Kbytes)
[ 1.420756] 12 qcomsmem partitions found on MTD device spi0.0
[ 1.425739] Creating 12 MTD partitions on "spi0.0":
[ 1.431381] 0x000000000000-0x00000000c000 : "0:sbl1"
[ 1.437058] 0x00000000c000-0x00000000d000 : "0:mibib"
[ 1.442143] 0x00000000d000-0x000000027000 : "0:qsee"
[ 1.447057] 0x000000027000-0x000000028000 : "0:devcfg"
[ 1.452088] 0x000000028000-0x00000002a000 : "0:rpm"
[ 1.457065] 0x00000002a000-0x00000002b000 : "0:cdt"
[ 1.461832] 0x00000002b000-0x00000002c000 : "0:appsblenv"
[ 1.466736] 0x00000002c000-0x000000036000 : "0:appsbl"
[ 1.472248] 0x000000036000-0x00000003a000 : "0:art"
[ 1.477297] 0x00000003a000-0x00000003e000 : "config"
[ 1.482047] 0x00000003e000-0x00000004e000 : "data"
[ 1.487257] 0x00000004e000-0x000000200000 : "0:hlos"
Remove dependency on MTD_NAND_QCOM. Update the Kconfig prompt and help
text accordingly.
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/7f558e888a41c5b1fd4ca0427b3976531c51a876.1614080824.git.baruch@tkos.co.il
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Get rid of central chrdev MTD lock, which prevents simultaneous operations
on completely independent physical MTD chips. Replace it with newly
introduced per-master mutex.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210217211845.43364-2-alexander.sverdlin@nokia.com
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It looks unnecessary in the function, remove it from the function
having in mind to remove it completely.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210217211845.43364-1-alexander.sverdlin@nokia.com
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When recursively deleting partitions, don't acquire the masters
partition lock twice. Otherwise the process ends up in a deadlocked
state.
Fixes: 46b5889cc2c5 ("mtd: implement proper partition handling")
Signed-off-by: David Bauer <mail@david-bauer.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210217195320.893253-1-mail@david-bauer.net
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Removing some boilerplate by using module_mtd_blktrans instead of calling
register and unregister in the otherwise empty init/exit functions.
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210213164600.409061-9-zhengdejin5@gmail.com
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