buildroot

config BR2_TARGET_ROOTFS_UBI

    bool "ubi image containing an ubifs root filesystem"

    select BR2_TARGET_ROOTFS_UBIFS

    help

      Build an ubi image from the ubifs one (with ubinize).

​

if BR2_TARGET_ROOTFS_UBI

​

config BR2_TARGET_ROOTFS_UBI_PEBSIZE

    hex "physical eraseblock size"

    default 0x20000

    help

      Tells ubinize the physical eraseblock (PEB) size of the

      flash chip the ubi image is created for. The value provided

      here is passed to the -p/--peb-size option of ubinize.

​

config BR2_TARGET_ROOTFS_UBI_SUBSIZE

    int "sub-page size"

    default 512

    help

      Tells ubinize that the flash supports sub-pages and the sub-page

      size. Use 0 if sub-pages are not supported on flash chip.

      The value provided here is passed to the -s/--sub-page-size

      option of ubinize.

​

config BR2_TARGET_ROOTFS_UBI_USE_CUSTOM_CONFIG

    bool "Use custom config file"

    help

      Select this option to use a custom ubinize configuration file,

      rather than the default configuration used by Buildroot (which

      defines a single dynamic volume marked as auto-resize).  Passing

      a custom ubinize configuration file allows you to create several

      volumes, specify volume types, etc.

​

      As a convenience, buildroot replaces the string

      "BR2_ROOTFS_UBIFS_PATH" with the path to the built ubifs file.

      So the volume defined for the root filesystem can specify the

      image path as:  image=BR2_ROOTFS_UBIFS_PATH

​

config BR2_TARGET_ROOTFS_UBI_CUSTOM_CONFIG_FILE

    string "Configuration file path"

    depends on BR2_TARGET_ROOTFS_UBI_USE_CUSTOM_CONFIG

    help

      Path to the ubinize configuration file.

​

config BR2_TARGET_ROOTFS_UBI_OPTS

    string "Additional ubinize options"

    help

      Any additional ubinize options you may want to include.

​

endif # BR2_TARGET_ROOTFS_UBI