245 lines
7.1 KiB
Plaintext
245 lines
7.1 KiB
Plaintext
# Flash driver configuration options
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# Copyright (c) 2016 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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#
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# Flash driver
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#
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config FLASH_HAS_DRIVER_ENABLED
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bool
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help
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This option is enabled when any flash driver is enabled.
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config FLASH_HAS_EX_OP
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bool
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help
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This option is selected by drivers that support flash extended
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operations.
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config FLASH_HAS_EXPLICIT_ERASE
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bool
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help
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Device does not do erase-on-write (erase-on-program, auto-erase
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on write) and requires explicit erase procedure to be programmed
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with random value, in place where it has already been programmed with
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some other value, as program can only change bits from erased-value
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to the opposite.
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All pure Flash devices are evolution of EEPROM where erase has
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been separated from write, EEPROM has erase-on-write, giving
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it advantage of higher write speeds at a cost of larger erase block.
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Note that explicit-erase capability does not warrants that
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write without erase is not allowed, taking the above restrictions,
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it only states that write of a random information will require
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erase.
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Erase is usually performed in pages, as we have chosen to name
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the unit in Zephyr, that may have different naming in device
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specifications, like pages, sectors or blocks, and may vary
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in size, depending how they are named by vendor.
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This option should be selected by drivers that serve devices with
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such characteristic and is used and may be used by users to provide
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paths in code that only serve such devices, and could be
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optimized-out by compiler in case where there is no such device in
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a system.
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config FLASH_HAS_NO_EXPLICIT_ERASE
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bool
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help
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Device does not require explicit erase before programming
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a new random value at any location that has been previously
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programmed with some other value.
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Note that the device may have erase-on-write (auto-erase),
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as for example in EEPROM devices, but may also have no erase
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at all.
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A device driver may still provide erase callback,
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especially if it is able to perform erase to accelerate
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further writes or is able to fill the area requested for
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erase, with single value, faster than consecutive writes
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that would be used to emulate erase.
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This option should be selected by drivers that serve
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devices with such characteristic and is used and may be
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used by users to provide paths in code that only serve
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such devices, and could be optimized-out by compiler in
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case where there is no such device in a system.
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This option should be selected for any device that
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can change storage bits, by write, from any value to opposite
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value at any time.
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When your driver sets this option you also need to set
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no_explicit_erase capability in your drivers flash_parameters.
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config FLASH_HAS_PAGE_LAYOUT
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bool
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help
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This option is enabled when the SoC flash driver supports
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retrieving the layout of flash memory pages.
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config FLASH_JESD216
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bool
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help
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Selected by drivers that support JESD216-compatible flash
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devices to enable building a common support module.
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menuconfig FLASH
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bool "Flash drivers"
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help
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Enable support for the flash hardware.
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if FLASH
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config FLASH_JESD216_API
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bool "Provide API to read JESD216 flash parameters"
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depends on FLASH_JESD216
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help
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This option extends the Zephyr flash API with the ability
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to access the Serial Flash Discoverable Parameter section
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allowing runtime determination of serial flash parameters
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for flash drivers that expose this capability.
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config FLASH_SHELL
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bool "Flash shell"
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depends on SHELL && FLASH_PAGE_LAYOUT
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select MPU_ALLOW_FLASH_WRITE if ARM_MPU
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help
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Enable the flash shell with flash related commands such as test,
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write, read and erase.
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if FLASH_SHELL
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config FLASH_SHELL_TEST_COMMANDS
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bool "Flash read/write/erase test commands"
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select CBPRINTF_FP_SUPPORT
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help
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Enable additional flash shell commands for performing
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read/write/erase tests with speed output.
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config FLASH_SHELL_BUFFER_SIZE
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hex "Flash shell buffer size"
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default 0x4000 if FLASH_SHELL_TEST_COMMANDS
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default 0x1000
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range 0x400 0x1000000
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help
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Size of the buffer used for flash commands, will determine the
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maximum size that can be used with a read/write test.
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endif # FLASH_SHELL
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config FLASH_FILL_BUFFER_SIZE
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int "Buffer size of flash_fill function"
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default 32
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help
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Size of a buffer used by flash_fill function to fill a device with
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specific value; this buffer is allocated on stack.
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The buffer is needed as most devices have write-block alignment
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requirements that which imposes minimal size of data, which can
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be written to a device, and alignment of write offset.
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Even if device does not have such requirement, filling device by
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single bytes is not efficient.
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Value selected here should be a multiple of the largest write-block-size
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among all the memory devices used in system.
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if FLASH_HAS_PAGE_LAYOUT
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config FLASH_PAGE_LAYOUT
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bool "API for retrieving the layout of pages"
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default FLASH_HAS_PAGE_LAYOUT
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help
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Enables API for retrieving the layout of flash memory pages.
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endif
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config FLASH_EX_OP_ENABLED
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bool "API for extended flash operations"
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depends on FLASH_HAS_EX_OP
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default n
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help
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Enables flash extended operations API. It can be used to perform
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non-standard operations e.g. manipulating flash protection.
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config FLASH_INIT_PRIORITY
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int "Flash init priority"
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default KERNEL_INIT_PRIORITY_DEVICE
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help
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Flash driver device initialization priority. This initialization
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priority is used unless the driver implementation has its own
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initialization priority
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source "drivers/flash/Kconfig.b91"
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source "drivers/flash/Kconfig.cc13xx_cc26xx"
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source "drivers/flash/Kconfig.at45"
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source "drivers/flash/Kconfig.esp32"
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source "drivers/flash/Kconfig.it8xxx2"
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source "drivers/flash/Kconfig.nrf"
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source "drivers/flash/Kconfig.lpc"
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source "drivers/flash/Kconfig.mcux"
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source "drivers/flash/Kconfig.mspi"
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source "drivers/flash/Kconfig.nios2_qspi"
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source "drivers/flash/Kconfig.npcx_fiu"
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source "drivers/flash/Kconfig.gecko"
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source "drivers/flash/Kconfig.nor"
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source "drivers/flash/Kconfig.rpi_pico"
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source "drivers/flash/Kconfig.stm32"
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source "drivers/flash/Kconfig.stm32_qspi"
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source "drivers/flash/Kconfig.stm32_ospi"
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source "drivers/flash/Kconfig.stm32_xspi"
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source "drivers/flash/Kconfig.sam0"
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source "drivers/flash/Kconfig.sam"
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source "drivers/flash/Kconfig.simulator"
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source "drivers/flash/Kconfig.si32"
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source "drivers/flash/Kconfig.rv32m1"
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source "drivers/flash/Kconfig.nordic_qspi_nor"
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source "drivers/flash/Kconfig.smartbond"
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source "drivers/flash/Kconfig.cadence_qspi_nor"
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source "drivers/flash/Kconfig.gd32"
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source "drivers/flash/Kconfig.xmc4xxx"
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source "drivers/flash/Kconfig.ifx_cat1"
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source "drivers/flash/Kconfig.cadence_nand"
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source "drivers/flash/Kconfig.numaker"
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source "drivers/flash/Kconfig.nxp_s32"
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source "drivers/flash/Kconfig.andes"
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source "drivers/flash/Kconfig.ambiq"
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source "drivers/flash/Kconfig.nrf_rram"
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source "drivers/flash/Kconfig.nrf_mram"
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source "drivers/flash/Kconfig.numaker_rmc"
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module = FLASH
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module-str = flash
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source "subsys/logging/Kconfig.template.log_config"
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endif # FLASH
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