4fd5d80e9d
It is not unusual that projects can target multiple boards, and in
such cases, a lot is shared between boards and only the low-level
stuff differ.
Allow users to specify more than one dracut config file to cover
tose cases.
dracut does not accept more than one config file with the -c option,
but it can load more than one from a directory with --confdir. So,
we copy all the config files to a temporary directory and se that as
--confdir. However, we can't drop passing -c, or dracut would read
the system-wide /etc/dracut.conf (not sure if ${prefix} is even used),
which we do not want. So, we use an empty file as -c; /dev/null comes
in handy as an empty file.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Thierry Bultel <thierry.bultel@linatsea.fr>
Cc: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
108 lines
2.7 KiB
Plaintext
108 lines
2.7 KiB
Plaintext
config BR2_TARGET_ROOTFS_CPIO
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bool "cpio the root filesystem (for use as an initial RAM filesystem)"
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help
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Build a cpio archive of the root filesystem. This is typically
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used for an initial RAM filesystem that is passed to the
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kernel by the bootloader.
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if BR2_TARGET_ROOTFS_CPIO
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choice
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prompt "cpio type"
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default BR2_TARGET_ROOTFS_CPIO_FULL
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config BR2_TARGET_ROOTFS_CPIO_FULL
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bool "cpio the whole root filesystem"
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help
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Build a cpio archive containing the whole the root filesystem.
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config BR2_TARGET_ROOTFS_CPIO_DRACUT
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bool "Invoke dracut to make a partial initramfs"
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select BR2_PACKAGE_HOST_DRACUT
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help
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Build an additional initramfs using dracut. This only contains
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a subset of the rootfs, as determined by the configuration
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file.
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This can be useful to create a recovery system, for instance.
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endchoice
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if BR2_TARGET_ROOTFS_CPIO_DRACUT
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config BR2_TARGET_ROOTFS_CPIO_DRACUT_CONF_FILES
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string "dracut configuration files"
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default "fs/cpio/dracut.conf"
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help
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Space-separated list of Dracut configuration files. They
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determine which parts of the rootfs get included in the
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cpio image. See:
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dracut.conf(5)
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https://github.com/dracutdevs/dracut/blob/master/man/dracut.conf.5.asc
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The default configuration file is suitable for busybox init.
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It doesn't, however, pivot_root into a full rootfs.
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endif
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choice
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prompt "Compression method"
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default BR2_TARGET_ROOTFS_CPIO_NONE
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help
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Select compressor for cpio filesystem of the root filesystem.
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If you use the cpio archive as an initial RAM filesystem, make
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sure the kernel contains the decompression algorithm selected
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here.
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config BR2_TARGET_ROOTFS_CPIO_NONE
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bool "no compression"
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help
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Do not compress the cpio filesystem.
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config BR2_TARGET_ROOTFS_CPIO_GZIP
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bool "gzip"
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help
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Do compress the cpio filesystem with gzip.
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config BR2_TARGET_ROOTFS_CPIO_BZIP2
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bool "bzip2"
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help
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Do compress the cpio filesystem with bzip2.
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config BR2_TARGET_ROOTFS_CPIO_LZ4
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bool "lz4"
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help
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Do compress the cpio filesystem with lz4.
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config BR2_TARGET_ROOTFS_CPIO_LZMA
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bool "lzma"
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help
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Do compress the cpio filesystem with lzma.
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config BR2_TARGET_ROOTFS_CPIO_LZO
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bool "lzo"
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help
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Do compress the cpio filesystem with lzop.
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config BR2_TARGET_ROOTFS_CPIO_XZ
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bool "xz"
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help
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Do compress the cpio filesystem with xz.
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config BR2_TARGET_ROOTFS_CPIO_ZSTD
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bool "zstd"
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help
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Do compress the cpio filesystem with zstd.
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endchoice
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config BR2_TARGET_ROOTFS_CPIO_UIMAGE
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bool "Create U-Boot image of the root filesystem"
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select BR2_PACKAGE_HOST_UBOOT_TOOLS
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help
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Add a U-Boot header to the cpio root filesystem. This allows
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the initramfs to be loaded with the bootm command in U-Boot.
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The U-Boot image will be called rootfs.cpio.uboot
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endif # BR2_TARGET_ROOTFS_CPIO
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