The current atmel sam flash driver was develop based on the cortex-m7
version of smart arm microcontroller. The driver support write
protection and cache functions which is not supported by other cortex-m
variants. This fixes current driver implementation and devicetree
entries for all sam variants.
Notes:
* The cortex-m3 doesn't have support erase pages flash command and
because of that the driver still not not compatible. Keep it disabled
until a patch be send. The hwinfo driver is not affected by this
restriction.
* The sam4l variation requires a specific driver because uses another
flash controller (flashcalw). Added another compatible to
differentiate and keeped node disabled until a driver be available.
Fixes#48516
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
In order to bring consistency in-tree, migrate all drivers to the new
prefix <zephyr/...>. Note that the conversion has been scripted, refer
to #45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Stop using redundant DEV_DATA/DEV_CFG macros and use dev->data and
dev->config instead.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Refactors all of the on-chip flash drivers to use a shared driver class
initialization priority configuration, CONFIG_FLASH_INIT_PRIORITY, to
allow configuring flash drivers separately from other devices. This is
similar to other driver classes like I2C and SPI.
The default is set to CONFIG_KERNEL_INIT_PRIORITY_DEVICE to preserve the
existing default initialization priority for most drivers.
Driver-specific options for SPI-based flash drivers are left intact
because they need to be initialized at a different priority than on-chip
flash drivers.
Signed-off-by: Maureen Helm <maureen.helm@intel.com>
According to Atmel SAM datasheet when writing data to the latch buffer
"32-bit words must be written continuously, in either ascending or
descending order. Writing the latch buffer in a random order is not
permitted." To enforce the requirement we need to call a memory barrier
instruction after copying every word of data to the latch buffer. In
the absensce of __DSB() call the ARM processor is free to change order
of AHB transfers. This has caused the driver to occasionally corrupt
data programmed in the flash.
Fixes#37515
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
flash_write_protection_set() API was deprecated so driver
implementation interface is left behind as well.
This patch removes all implementation pointed by the interface
'struct flash_driver_api.write_protection'.
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
Flash write protection services were integrated into erase and write
procedures. This is step required for fixing following issue:
Multi-threading flash access is not supported by
flash_write_protection_set().
Write procedure was fixed so it doesn't lock the driver after
failure anymore.
flash_write_protection_set() will be deprecated.
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
There is a typo in the function pointer assigned to get_parameters. It
should be flash_sam_get_parameters.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
With addition of flash_parameters structure, and supporting API call
to retrieve it, it is no longer needed to store write_block_size as
a part of flash_driver_api and it should be part of flash_parameters.
Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
With addition of flash_get_parameters API call, it is needed to provide
support for the API to flash drivers.
Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
For a flash driver DT_DRV_COMPAT should be the compatible for the flash
controller and not the soc-nv-flash. Change to driver to use the flash
controllers compatible and get the soc-nv-flash properties as a child of
that controller.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Replace DT_FLASH_DEV_BASE_ADDRESS with new DT_REG_ADDR/DT_INST macro as
we phase out DT_FLASH define usage.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Replace use of DT_FLASH_DEV_NAME with DT_INST_LABEL in drivers as we
want to phase out DT_FLASH_DEV_NAME.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The duration is used in math with the uptime clock, not as a timeout.
Correct value expression and rename to clarify units.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Convert older DT_INST_ macro use in atmel sam drivers to the new
include/devicetree.h DT_INST macro APIs.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit fixes following issues in printf formatting used by flash
drivers:
- cast values of type off_t to long to remove warnings generated when
compiling with Newlib.
- use 'z' modifier (as in "%zu") to print values of type size_t
- prefix all hex numbers with '0x'
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
