config BR2_TARGET_ROOTFS_EXT2
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bool "ext2/3/4 root filesystem"
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select BR2_PACKAGE_HOST_E2FSPROGS
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help
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Build an ext2/3/4 root filesystem
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if BR2_TARGET_ROOTFS_EXT2
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config BR2_TARGET_ROOTFS_EXT2_2
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bool
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choice
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bool "ext2/3/4 variant"
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default BR2_TARGET_ROOTFS_EXT2_2r1
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config BR2_TARGET_ROOTFS_EXT2_2r0
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bool "ext2 (rev0)"
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select BR2_TARGET_ROOTFS_EXT2_2
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config BR2_TARGET_ROOTFS_EXT2_2r1
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bool "ext2 (rev1)"
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select BR2_TARGET_ROOTFS_EXT2_2
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config BR2_TARGET_ROOTFS_EXT2_3
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bool "ext3"
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config BR2_TARGET_ROOTFS_EXT2_4
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bool "ext4"
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endchoice
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config BR2_TARGET_ROOTFS_EXT2_GEN
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int
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default 2 if BR2_TARGET_ROOTFS_EXT2_2
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default 3 if BR2_TARGET_ROOTFS_EXT2_3
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default 4 if BR2_TARGET_ROOTFS_EXT2_4
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# All ext generations are revision 1, except ext2r0, which is revision 0
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config BR2_TARGET_ROOTFS_EXT2_REV
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int
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default 0 if BR2_TARGET_ROOTFS_EXT2_2r0
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default 1 if !BR2_TARGET_ROOTFS_EXT2_2r0
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config BR2_TARGET_ROOTFS_EXT2_LABEL
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string "filesystem label"
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config BR2_TARGET_ROOTFS_EXT2_SIZE
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string "exact size"
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default BR2_TARGET_ROOTFS_EXT2_BLOCKS if BR2_TARGET_ROOTFS_EXT2_BLOCKS_WRAP # legacy 2017.08
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default "60M"
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help
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The size of the filesystem image. If it does not have a suffix,
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it is interpreted as power-of-two kilobytes. If it is suffixed
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by 'k', 'm', 'g', 't' (either upper-case or lower-case), then
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it is interpreted in power-of-two kilobytes, megabytes,
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gigabytes, terabytes, etc.
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config BR2_TARGET_ROOTFS_EXT2_INODES
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int "exact number of inodes (leave at 0 for auto calculation)"
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default 0
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config BR2_TARGET_ROOTFS_EXT2_RESBLKS
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int "reserved blocks percentage"
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default 5
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help
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The number of blocks on the filesystem (as a percentage of the
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total number of blocks), that are reserved for use by root.
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Traditionally, this has been 5%, and all ext-related tools still
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default to reserving 5% when creating a new ext filesystem.
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config BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS
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string "additional mke2fs options"
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default "-O ^64bit"
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help
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Specify a space-separated list of mke2fs options, including any
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ext2/3/4 filesystem features.
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For more information about the mke2fs options, see the manual
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page mke2fs(8).
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For more information about the ext2/3/4 features which can be
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set, see the manual page ext4(5).
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The default is "-O ^64bit", i.e. disable 64-bit filesystem
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support. This default value has been chosen because U-Boot
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versions before 2017.02 don't support this filesystem
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option: using it may make the filesystem unreadable by
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U-Boot.
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choice
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prompt "Compression method"
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default BR2_TARGET_ROOTFS_EXT2_NONE
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help
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Select compressor for ext2/3/4 filesystem of the root filesystem
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config BR2_TARGET_ROOTFS_EXT2_NONE
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bool "no compression"
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help
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Do not compress the ext2/3/4 filesystem.
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config BR2_TARGET_ROOTFS_EXT2_GZIP
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bool "gzip"
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help
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Do compress the ext2/3/4 filesystem with gzip.
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config BR2_TARGET_ROOTFS_EXT2_BZIP2
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bool "bzip2"
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help
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Do compress the ext2/3/4 filesystem with bzip2.
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config BR2_TARGET_ROOTFS_EXT2_LZ4
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bool "lz4"
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help
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Do compress the ext2 filesystem with lz4.
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config BR2_TARGET_ROOTFS_EXT2_LZMA
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bool "lzma"
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help
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Do compress the ext2/3/4 filesystem with lzma.
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config BR2_TARGET_ROOTFS_EXT2_LZO
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bool "lzo"
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help
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Do compress the ext2 filesystem with lzop.
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config BR2_TARGET_ROOTFS_EXT2_XZ
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bool "xz"
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help
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Do compress the ext2 filesystem with xz.
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endchoice
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endif # BR2_TARGET_ROOTFS_EXT2
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