buildroot

config BR2_TARGET_ROOTFS_EXT2

    bool "ext2/3/4 root filesystem"

    select BR2_PACKAGE_HOST_E2FSPROGS

    help

      Build an ext2/3/4 root filesystem

​

if BR2_TARGET_ROOTFS_EXT2

​

config BR2_TARGET_ROOTFS_EXT2_2

    bool

​

choice

    bool "ext2/3/4 variant"

    default BR2_TARGET_ROOTFS_EXT2_2r1

​

config BR2_TARGET_ROOTFS_EXT2_2r0

    bool "ext2 (rev0)"

    select BR2_TARGET_ROOTFS_EXT2_2

​

config BR2_TARGET_ROOTFS_EXT2_2r1

    bool "ext2 (rev1)"

    select BR2_TARGET_ROOTFS_EXT2_2

​

config BR2_TARGET_ROOTFS_EXT2_3

    bool "ext3"

​

config BR2_TARGET_ROOTFS_EXT2_4

    bool "ext4"

​

endchoice

​

config BR2_TARGET_ROOTFS_EXT2_GEN

    int

    default 2 if BR2_TARGET_ROOTFS_EXT2_2

    default 3 if BR2_TARGET_ROOTFS_EXT2_3

    default 4 if BR2_TARGET_ROOTFS_EXT2_4

​

# All ext generations are revision 1, except ext2r0, which is revision 0

config BR2_TARGET_ROOTFS_EXT2_REV

    int

    default 0   if BR2_TARGET_ROOTFS_EXT2_2r0

    default 1   if !BR2_TARGET_ROOTFS_EXT2_2r0

​

config BR2_TARGET_ROOTFS_EXT2_LABEL

    string "filesystem label"

​

config BR2_TARGET_ROOTFS_EXT2_SIZE

    string "exact size"

    default BR2_TARGET_ROOTFS_EXT2_BLOCKS if BR2_TARGET_ROOTFS_EXT2_BLOCKS_WRAP # legacy 2017.08

    default "60M"

    help

      The size of the filesystem image. If it does not have a suffix,

      it is interpreted as power-of-two kilobytes. If it is suffixed

      by 'k', 'm', 'g', 't' (either upper-case or lower-case), then

      it is interpreted in power-of-two kilobytes, megabytes,

      gigabytes, terabytes, etc.

​

config BR2_TARGET_ROOTFS_EXT2_INODES

    int "exact number of inodes (leave at 0 for auto calculation)"

    default 0

​

config BR2_TARGET_ROOTFS_EXT2_RESBLKS

    int "reserved blocks percentage"