blob: 4d38276c880bcdfbb8a1f5c2a1be717106a0ecb9 [file] [log] [blame]
config BR2_TARGET_ROOTFS_CPIO
bool "cpio the root filesystem (for use as an initial RAM filesystem)"
help
Build a cpio archive of the root filesystem. This is typically
used for an initial RAM filesystem that is passed to the
kernel by the bootloader.
if BR2_TARGET_ROOTFS_CPIO
choice
prompt "cpio type"
default BR2_TARGET_ROOTFS_CPIO_FULL
config BR2_TARGET_ROOTFS_CPIO_FULL
bool "cpio the whole root filesystem"
help
Build a cpio archive containing the whole root filesystem.
config BR2_TARGET_ROOTFS_CPIO_DRACUT
bool "Invoke dracut to make a partial initramfs"
select BR2_PACKAGE_HOST_DRACUT
help
Build an additional initramfs using dracut. This only contains
a subset of the rootfs, as determined by the configuration
file.
This can be useful to create a recovery system, for instance.
endchoice
if BR2_TARGET_ROOTFS_CPIO_DRACUT
config BR2_TARGET_ROOTFS_CPIO_DRACUT_MODULES
string "extra dracut modules"
help
Space-separated list of directories containing dracut modules.
config BR2_TARGET_ROOTFS_CPIO_DRACUT_CONF_FILES
string "dracut configuration files"
default "fs/cpio/dracut.conf"
help
Space-separated list of Dracut configuration files. They
determine which parts of the rootfs get included in the
cpio image. See:
dracut.conf(5)
https://github.com/dracutdevs/dracut/blob/master/man/dracut.conf.5.asc
The default configuration file is suitable for busybox init.
It doesn't, however, pivot_root into a full rootfs.
endif
choice
prompt "Compression method"
default BR2_TARGET_ROOTFS_CPIO_NONE
help
Select compressor for cpio filesystem of the root filesystem.
If you use the cpio archive as an initial RAM filesystem, make
sure the kernel contains the decompression algorithm selected
here.
config BR2_TARGET_ROOTFS_CPIO_NONE
bool "no compression"
help
Do not compress the cpio filesystem.
config BR2_TARGET_ROOTFS_CPIO_GZIP
bool "gzip"
help
Do compress the cpio filesystem with gzip.
config BR2_TARGET_ROOTFS_CPIO_BZIP2
bool "bzip2"
help
Do compress the cpio filesystem with bzip2.
config BR2_TARGET_ROOTFS_CPIO_LZ4
bool "lz4"
help
Do compress the cpio filesystem with lz4.
config BR2_TARGET_ROOTFS_CPIO_LZMA
bool "lzma"
help
Do compress the cpio filesystem with lzma.
config BR2_TARGET_ROOTFS_CPIO_LZO
bool "lzo"
help
Do compress the cpio filesystem with lzop.
config BR2_TARGET_ROOTFS_CPIO_XZ
bool "xz"
help
Do compress the cpio filesystem with xz.
config BR2_TARGET_ROOTFS_CPIO_ZSTD
bool "zstd"
help
Do compress the cpio filesystem with zstd.
endchoice
config BR2_TARGET_ROOTFS_CPIO_UIMAGE
bool "Create U-Boot image of the root filesystem"
select BR2_PACKAGE_HOST_UBOOT_TOOLS
help
Add a U-Boot header to the cpio root filesystem. This allows
the initramfs to be loaded with the bootm command in U-Boot.
The U-Boot image will be called rootfs.cpio.uboot
endif # BR2_TARGET_ROOTFS_CPIO