This feature prevents issues when trying to write data to the flash
device that is located on or addressed at the same flash device.
An example is the mcuboot logic that writes a magic number to
the secondary partition header.
Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>
This change allows writing to the flash while running in XIP mode,
and enables mcuboot or NVS settings to be used on i.MX RT socs.
Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>
Initially the flexspi device only supported a flash driver for
external NOR flash. As the controller supports HyperBus devices,
which can be either volatile or non-volatile, the driver iss moved
to drivers/memc.
Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>
Added selection of MPU_ALLOW_FLASH_WRITE.
Using a flash driver while MPU is enable without
this option on doesn't make sense at all.
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
Introduces a new flash driver for the FlexSPI peripheral on i.MX RT
SoCs. The hardware provides a flexible sequence engine (LUT) that
supports various types of external devices, including serial NOR flash,
serial NAND flash, HyperBus (HyperFlash/HyperRAM), and FPGAs. It
supports up to four connected devices in single/dual/quad/octal modes
and provides memory-mapped read/write access to these devices through
the AHB bus.
The driver implementation consists of a shared controller for each
FlexSPI peripheral instance, and protocol-specific device drivers for
each external device. The controller provides a private interface for
multiple devices to access the FlexSPI peripheral registers. FlexSPI
devices provide the public flash driver interface to applications or
subsystems like storage or flash file systems; they also provide
protocol-specific LUT sequences to the controller.
Currently the only device type supported is QSPI NOR flash, but other
types like HyperFlash will be added later.
XIP is not yet supported, as this requires additional work to relocate
code to RAM and managing interrupts.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
LPC55xxx SoCs don't allow reading erased areas, the flash memory
controller (FMC) will trigger an ECC error for that area. To prevent
reading unwritten areas the low level FMC command of margin checking is
used, this will fail if the area to be read is not correctly written
(margin_check) or area is erased (blank_check).
In the case of an erased page, we return dummy data so the application
can program that area.
Signed-off-by: Andrei Gansari <andrei.gansari@nxp.com>
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier. Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.
By default all files without license information are under the default
license of Zephyr, which is Apache version 2.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Adds a new config HAS_MCUX_FTFX to conditionalize the mcux flash driver
on socs that support it. Selects HAS_MCUX_FTFX on all kinetis socs
except kw40z, because even though this soc has the relevant hardware,
its CMSIS header file is not compatible with the mcux flash driver in
ext/.
This change also prevents enabling the mcux flash driver on lpc and imx
rt boards.
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
Cleanup the Kconfig code for the flash driver. Platform-specific
options should be in their own Kconfig files to be consistent and to
not pollute the common configuration.
To this end we move the mcux options into it's own file.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
Pieter De Gendt