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Config-images.in
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# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2006-2013 OpenWrt.org
menu "Target Images"
menuconfig TARGET_ROOTFS_INITRAMFS
bool "ramdisk"
default y if USES_INITRAMFS
help
Embed the root filesystem into the kernel (initramfs).
choice
prompt "Compression"
default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_apm821xx
default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ath79_mikrotik
default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_lantiq
default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_mpc85xx
default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ramips
default TARGET_INITRAMFS_COMPRESSION_ZSTD if TARGET_ipq807x
default TARGET_INITRAMFS_COMPRESSION_XZ if USES_SEPARATE_INITRAMFS
default TARGET_INITRAMFS_COMPRESSION_NONE
depends on TARGET_ROOTFS_INITRAMFS
help
Select ramdisk compression.
config TARGET_INITRAMFS_COMPRESSION_NONE
bool "none"
config TARGET_INITRAMFS_COMPRESSION_GZIP
bool "gzip"
config TARGET_INITRAMFS_COMPRESSION_BZIP2
bool "bzip2"
config TARGET_INITRAMFS_COMPRESSION_LZMA
bool "lzma"
config TARGET_INITRAMFS_COMPRESSION_LZO
bool "lzo"
config TARGET_INITRAMFS_COMPRESSION_LZ4
bool "lz4"
config TARGET_INITRAMFS_COMPRESSION_XZ
bool "xz"
config TARGET_INITRAMFS_COMPRESSION_ZSTD
bool "zstd"
endchoice
config EXTERNAL_CPIO
string
prompt "Use external cpio" if TARGET_ROOTFS_INITRAMFS
default ""
help
Kernel uses specified external cpio as INITRAMFS_SOURCE.
config TARGET_INITRAMFS_FORCE
bool "Force"
depends on TARGET_ROOTFS_INITRAMFS
help
Ignore the initramfs passed by the bootloader.
config TARGET_ROOTFS_INITRAMFS_SEPARATE
bool "separate ramdisk"
depends on USES_SEPARATE_INITRAMFS && TARGET_ROOTFS_INITRAMFS && !TARGET_INITRAMFS_FORCE
default y if USES_SEPARATE_INITRAMFS
help
Generate separate initrd.cpio instead of embedding it.
This is useful for generating images with a dedicated
ramdisk e.g. in U-Boot's uImage and uImage.FIT formats.
comment "Root filesystem archives"
config TARGET_ROOTFS_CPIOGZ
bool "cpio.gz"
default y if USES_CPIOGZ
help
Build a compressed cpio archive of the root filesystem.
config TARGET_ROOTFS_TARGZ
bool "tar.gz"
default y if USES_TARGZ
help
Build a compressed tar archive of the root filesystem.
comment "Root filesystem images"
menuconfig TARGET_ROOTFS_EXT4FS
bool "ext4"
default y if USES_EXT4
help
Build an ext4 root filesystem.
config TARGET_EXT4_RESERVED_PCT
int "Percentage of reserved blocks in root filesystem"
depends on TARGET_ROOTFS_EXT4FS
default 0
help
Select the percentage of reserved blocks in the root filesystem.
choice
prompt "Root filesystem block size"
default TARGET_EXT4_BLOCKSIZE_4K
depends on TARGET_ROOTFS_EXT4FS
help
Select the block size of the root filesystem.
config TARGET_EXT4_BLOCKSIZE_4K
bool "4k"
config TARGET_EXT4_BLOCKSIZE_2K
bool "2k"
config TARGET_EXT4_BLOCKSIZE_1K
bool "1k"
endchoice
config TARGET_EXT4_BLOCKSIZE
int
default 4096 if TARGET_EXT4_BLOCKSIZE_4K
default 2048 if TARGET_EXT4_BLOCKSIZE_2K
default 1024 if TARGET_EXT4_BLOCKSIZE_1K
depends on TARGET_ROOTFS_EXT4FS
config TARGET_EXT4_JOURNAL
bool "Create a journaling filesystem"
depends on TARGET_ROOTFS_EXT4FS
help
Create an ext4 filesystem with a journal.
config TARGET_ROOTFS_JFFS2
bool "jffs2"
depends on USES_JFFS2
help
Build a JFFS2 root filesystem.
config TARGET_ROOTFS_JFFS2_NAND
bool "jffs2 for NAND"
default y if USES_JFFS2_NAND
depends on USES_JFFS2_NAND
help
Build a JFFS2 root filesystem for NAND flash.
menuconfig TARGET_ROOTFS_SQUASHFS
bool "squashfs"
default y if USES_SQUASHFS
help
Build a squashfs root filesystem.
config TARGET_SQUASHFS_BLOCK_SIZE
int "Block size (in KiB)"
depends on TARGET_ROOTFS_SQUASHFS
default 64 if LOW_MEMORY_FOOTPRINT
default 1024 if (SMALL_FLASH && !LOW_MEMORY_FOOTPRINT)
default 256
help
Select squashfs block size, must be one of:
4, 8, 16, 32, 64, 128, 256, 512, 1024
menuconfig TARGET_ROOTFS_UBIFS
bool "ubifs"
default y if USES_UBIFS
depends on USES_UBIFS
help
Build a UBIFS root filesystem.
choice
prompt "compression"
default TARGET_UBIFS_COMPRESSION_ZLIB
depends on TARGET_ROOTFS_UBIFS
help
Select compression type
config TARGET_UBIFS_COMPRESSION_NONE
bool "none"
config TARGET_UBIFS_COMPRESSION_LZO
bool "lzo"
config TARGET_UBIFS_COMPRESSION_ZLIB
bool "zlib"
endchoice
config TARGET_UBIFS_FREE_SPACE_FIXUP
bool "free space fixup" if TARGET_ROOTFS_UBIFS
default y
help
The filesystem free space has to be fixed up on first mount.
config TARGET_UBIFS_JOURNAL_SIZE
string
prompt "journal size" if TARGET_ROOTFS_UBIFS
default ""
config GRUB_IMAGES
bool "Build GRUB images (Linux x86 or x86_64 host only)"
depends on TARGET_x86
depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
select PACKAGE_grub2
select PACKAGE_grub2-bios-setup
default y
config GRUB_EFI_IMAGES
bool "Build GRUB EFI images (Linux x86 or x86_64 host only)"
depends on TARGET_x86
depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
select PACKAGE_grub2
select PACKAGE_grub2-efi
select PACKAGE_grub2-bios-setup
select PACKAGE_kmod-fs-vfat
default y
config GRUB_CONSOLE
bool "Use Console Terminal (in addition to Serial)"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
default y
config GRUB_SERIAL
string "Serial port device"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
default "ttyS0"
config GRUB_BAUDRATE
int "Serial port baud rate"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
default 38400 if TARGET_x86_generic
default 115200
config GRUB_FLOWCONTROL
bool "Use RTE/CTS on serial console"
depends on GRUB_SERIAL != ""
config GRUB_BOOTOPTS
string "Extra kernel boot options"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
help
If you don't know, just leave it blank.
config GRUB_TIMEOUT
string "Seconds to wait before booting the default entry"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
default "5"
help
If you don't know, 5 seconds is a reasonable default.
config GRUB_TITLE
string "Title for the menu entry in GRUB"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
default "OpenWrt"
help
This is the title of the GRUB menu entry.
If unspecified, it defaults to OpenWrt.
config ISO_IMAGES
bool "Build LiveCD image (ISO)"
depends on TARGET_x86
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
config VDI_IMAGES
bool "Build VirtualBox image files (VDI)"
depends on TARGET_x86
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
select PACKAGE_kmod-e1000
config VMDK_IMAGES
bool "Build VMware image files (VMDK)"
depends on TARGET_x86
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
select PACKAGE_kmod-e1000
config VHDX_IMAGES
bool "Build Hyper-V image files (VHDX)"
depends on TARGET_x86
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
select PACKAGE_kmod-e1000
config TARGET_IMAGES_GZIP
bool "GZip images"
depends on TARGET_ROOTFS_EXT4FS || TARGET_x86 || TARGET_armvirt || TARGET_malta
default y
comment "Image Options"
source "target/linux/*/image/Config.in"
source "target/linux/*/*/image/Config.in"
config TARGET_KERNEL_PARTSIZE
int "Kernel partition size (in MiB)"
depends on USES_BOOT_PART
default 8 if TARGET_apm821xx_sata
default 64 if TARGET_bcm27xx
default 16
config TARGET_ROOTFS_PARTSIZE
int "Root filesystem partition size (in MiB)"
depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS
default 104
help
Select the root filesystem partition size.
config TARGET_ROOTFS_PARTNAME
string "Root partition on target device"
depends on GRUB_IMAGES || GRUB_EFI_IMAGES
help
Override the root partition on the final device. If left empty,
it will be mounted by PARTUUID which makes the kernel find the
appropriate disk automatically.
config TARGET_ROOTFS_PERSIST_VAR
bool "Make /var persistent"
help
Do not symlink /var to /tmp, so that its content will persist
across reboots. When enabled, /var/run will still be linked
to /tmp/run.
endmenu