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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"
default 5
help
The number of blocks on the filesystem (as a percentage of the
total number of blocks), that are reserved for use by root.
Traditionally, this has been 5%, and all ext-related tools
still default to reserving 5% when creating a new ext
filesystem.
config BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS
string "additional mke2fs options"
default "-O ^64bit"
help
Specify a space-separated list of mke2fs options, including
any ext2/3/4 filesystem features.
For more information about the mke2fs options, see the manual
page mke2fs(8).
For more information about the ext2/3/4 features which can be
set, see the manual page ext4(5).
The default is "-O ^64bit", i.e. disable 64-bit filesystem
support. This default value has been chosen because U-Boot
versions before 2017.02 don't support this filesystem
option: using it may make the filesystem unreadable by
U-Boot.
choice
prompt "Compression method"
default BR2_TARGET_ROOTFS_EXT2_NONE
help
Select compressor for ext2/3/4 filesystem of the root
filesystem
config BR2_TARGET_ROOTFS_EXT2_NONE
bool "no compression"
help
Do not compress the ext2/3/4 filesystem.
config BR2_TARGET_ROOTFS_EXT2_GZIP
bool "gzip"
help
Do compress the ext2/3/4 filesystem with gzip.
config BR2_TARGET_ROOTFS_EXT2_BZIP2
bool "bzip2"
help
Do compress the ext2/3/4 filesystem with bzip2.
config BR2_TARGET_ROOTFS_EXT2_LZ4
bool "lz4"
help
Do compress the ext2 filesystem with lz4.
config BR2_TARGET_ROOTFS_EXT2_LZMA
bool "lzma"
help
Do compress the ext2/3/4 filesystem with lzma.
config BR2_TARGET_ROOTFS_EXT2_LZO
bool "lzo"
help
Do compress the ext2 filesystem with lzop.
config BR2_TARGET_ROOTFS_EXT2_XZ
bool "xz"
help
Do compress the ext2 filesystem with xz.
endchoice
endif # BR2_TARGET_ROOTFS_EXT2
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