diff options
Diffstat (limited to 'drivers/mtd/spi-nor/Kconfig')
| -rw-r--r-- | drivers/mtd/spi-nor/Kconfig | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig index ffc4b380f2b1..24cd25de2b8b 100644 --- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -24,6 +24,50 @@ config MTD_SPI_NOR_USE_4K_SECTORS Please note that some tools/drivers/filesystems may not work with 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). +choice + prompt "Software write protection at boot" + default MTD_SPI_NOR_SWP_DISABLE_ON_VOLATILE + +config MTD_SPI_NOR_SWP_DISABLE + bool "Disable SWP on any flashes (legacy behavior)" + help + This option disables the software write protection on any SPI + flashes at boot-up. + + Depending on the flash chip this either clears the block protection + bits or does a "Global Unprotect" command. + + Don't use this if you intent to use the software write protection + of your SPI flash. This is only to keep backwards compatibility. + +config MTD_SPI_NOR_SWP_DISABLE_ON_VOLATILE + bool "Disable SWP on flashes w/ volatile protection bits" + help + Some SPI flashes have volatile block protection bits, ie. after a + power-up or a reset the flash is software write protected by + default. + + This option disables the software write protection for these kind + of flashes while keeping it enabled for any other SPI flashes + which have non-volatile write protection bits. + + If the software write protection will be disabled depending on + the flash either the block protection bits are cleared or a + "Global Unprotect" command is issued. + + If you are unsure, select this option. + +config MTD_SPI_NOR_SWP_KEEP + bool "Keep software write protection as is" + help + If you select this option the software write protection of any + SPI flashes will not be changed. If your flash is software write + protected or will be automatically software write protected after + power-up you have to manually unlock it before you are able to + write to it. + +endchoice + source "drivers/mtd/spi-nor/controllers/Kconfig" endif # MTD_SPI_NOR |