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19b7705b8d
This feature can be disabled to save some IRAM (approx 1KB) for cases where flash encryption feature is not required.
176 lines
7.7 KiB
Plaintext
176 lines
7.7 KiB
Plaintext
menu "SPI Flash driver"
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config SPI_FLASH_VERIFY_WRITE
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bool "Verify SPI flash writes"
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default n
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help
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If this option is enabled, any time SPI flash is written then the data will be read
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back and verified. This can catch hardware problems with SPI flash, or flash which
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was not erased before verification.
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config SPI_FLASH_LOG_FAILED_WRITE
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bool "Log errors if verification fails"
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depends on SPI_FLASH_VERIFY_WRITE
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default n
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help
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If this option is enabled, if SPI flash write verification fails then a log error line
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will be written with the address, expected & actual values. This can be useful when
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debugging hardware SPI flash problems.
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config SPI_FLASH_WARN_SETTING_ZERO_TO_ONE
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bool "Log warning if writing zero bits to ones"
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depends on SPI_FLASH_VERIFY_WRITE
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default n
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help
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If this option is enabled, any SPI flash write which tries to set zero bits in the flash to
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ones will log a warning. Such writes will not result in the requested data appearing identically
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in flash once written, as SPI NOR flash can only set bits to one when an entire sector is erased.
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After erasing, individual bits can only be written from one to zero.
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Note that some software (such as SPIFFS) which is aware of SPI NOR flash may write one bits as an
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optimisation, relying on the data in flash becoming a bitwise AND of the new data and any existing data.
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Such software will log spurious warnings if this option is enabled.
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config SPI_FLASH_ENABLE_COUNTERS
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bool "Enable operation counters"
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default 0
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help
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This option enables the following APIs:
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- spi_flash_reset_counters
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- spi_flash_dump_counters
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- spi_flash_get_counters
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These APIs may be used to collect performance data for spi_flash APIs
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and to help understand behaviour of libraries which use SPI flash.
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config SPI_FLASH_ROM_DRIVER_PATCH
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bool "Enable SPI flash ROM driver patched functions"
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default y
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help
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Enable this flag to use patched versions of SPI flash ROM driver functions.
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This option is needed to write to flash on ESP32-D2WD, and any configuration
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where external SPI flash is connected to non-default pins.
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choice SPI_FLASH_DANGEROUS_WRITE
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bool "Writing to dangerous flash regions"
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default SPI_FLASH_DANGEROUS_WRITE_ABORTS
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help
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SPI flash APIs can optionally abort or return a failure code
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if erasing or writing addresses that fall at the beginning
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of flash (covering the bootloader and partition table) or that
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overlap the app partition that contains the running app.
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It is not recommended to ever write to these regions from an IDF app,
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and this check prevents logic errors or corrupted firmware memory from
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damaging these regions.
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Note that this feature *does not* check calls to the esp_rom_xxx SPI flash
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ROM functions. These functions should not be called directly from IDF
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applications.
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config SPI_FLASH_DANGEROUS_WRITE_ABORTS
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bool "Aborts"
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config SPI_FLASH_DANGEROUS_WRITE_FAILS
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bool "Fails"
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config SPI_FLASH_DANGEROUS_WRITE_ALLOWED
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bool "Allowed"
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endchoice
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config SPI_FLASH_USE_LEGACY_IMPL
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bool "Use the legacy implementation before IDF v4.0"
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default n
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help
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The implementation of SPI flash has been greatly changed in IDF v4.0.
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Enable this option to use the legacy implementation.
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config SPI_FLASH_SHARE_SPI1_BUS
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bool "Support other devices attached to SPI1 bus"
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default n
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# The bus lock on SPI1 is meaningless when the legacy implementation is used, or the SPI
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# driver does not support SPI1.
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depends on !SPI_FLASH_USE_LEGACY_IMPL && !IDF_TARGET_ESP32S2
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select FREERTOS_SUPPORT_STATIC_ALLOCATION
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help
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Each SPI bus needs a lock for arbitration among devices. This allows multiple
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devices on a same bus, but may reduce the speed of esp_flash driver access to the
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main flash chip.
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If you only need to use esp_flash driver to access the main flash chip, disable
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this option, and the lock will be bypassed on SPI1 bus. Otherwise if extra devices
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are needed to attach to SPI1 bus, enable this option.
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config SPI_FLASH_BYPASS_BLOCK_ERASE
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bool "Bypass a block erase and always do sector erase"
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default n
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help
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Some flash chips can have very high "max" erase times, especially for block erase (32KB or 64KB).
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This option allows to bypass "block erase" and always do sector erase commands.
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This will be much slower overall in most cases, but improves latency for other code to run.
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config SPI_FLASH_YIELD_DURING_ERASE
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bool "Enables yield operation during flash erase"
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default y
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help
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This allows to yield the CPUs between erase commands.
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Prevents starvation of other tasks.
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config SPI_FLASH_ERASE_YIELD_DURATION_MS
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int "Duration of erasing to yield CPUs (ms)"
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depends on SPI_FLASH_YIELD_DURING_ERASE
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default 20
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help
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If a duration of one erase command is large
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then it will yield CPUs after finishing a current command.
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config SPI_FLASH_ERASE_YIELD_TICKS
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int "CPU release time (tick)"
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depends on SPI_FLASH_YIELD_DURING_ERASE
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default 1
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help
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Defines how many ticks will be before returning to continue a erasing.
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menu "Auto-detect flash chips"
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config SPI_FLASH_SUPPORT_ISSI_CHIP
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bool "ISSI"
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default y
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help
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Enable this to support auto detection of ISSI chips if chip vendor not directly
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given by ``chip_drv`` member of the chip struct. This adds support for variant
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chips, however will extend detecting time.
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config SPI_FLASH_SUPPORT_MXIC_CHIP
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bool "MXIC"
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default y
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help
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Enable this to support auto detection of MXIC chips if chip vendor not directly
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given by ``chip_drv`` member of the chip struct. This adds support for variant
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chips, however will extend detecting time.
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config SPI_FLASH_SUPPORT_GD_CHIP
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bool "GigaDevice"
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default y
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help
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Enable this to support auto detection of GD (GigaDevice) chips if chip vendor not
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directly given by ``chip_drv`` member of the chip struct. If you are using Wrover
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modules, please don't disable this, otherwise your flash may not work in 4-bit
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mode.
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This adds support for variant chips, however will extend detecting time and image
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size. Note that the default chip driver supports the GD chips with product ID
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60H.
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endmenu #auto detect flash chips
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config SPI_FLASH_ENABLE_ENCRYPTED_READ_WRITE
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bool "Enable encrypted partition read/write operations"
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default y
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help
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This option enables flash read/write operations to encrypted partition/s. This option
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is kept enabled irrespective of state of flash encryption feature. However, in case
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application is not using flash encryption feature and is in need of some additional
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memory from IRAM region (~1KB) then this config can be disabled.
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endmenu
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