1 # SPDX-License-Identifier: GPL-2.0-only
3 # Copyright (C) 2006-2013 OpenWrt.org
7 menuconfig TARGET_ROOTFS_INITRAMFS
9 default y if USES_INITRAMFS
11 Embed the root filesystem into the kernel (initramfs).
15 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_apm821xx
16 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ath79_mikrotik
17 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_lantiq
18 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_mpc85xx
19 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ramips
20 default TARGET_INITRAMFS_COMPRESSION_XZ if USES_SEPARATE_INITRAMFS
21 default TARGET_INITRAMFS_COMPRESSION_NONE
22 depends on TARGET_ROOTFS_INITRAMFS
24 Select ramdisk compression.
26 config TARGET_INITRAMFS_COMPRESSION_NONE
29 config TARGET_INITRAMFS_COMPRESSION_GZIP
32 config TARGET_INITRAMFS_COMPRESSION_BZIP2
35 config TARGET_INITRAMFS_COMPRESSION_LZMA
38 config TARGET_INITRAMFS_COMPRESSION_LZO
39 depends on !TARGET_ROOTFS_INITRAMFS_SEPARATE
42 config TARGET_INITRAMFS_COMPRESSION_LZ4
43 depends on !TARGET_ROOTFS_INITRAMFS_SEPARATE
46 config TARGET_INITRAMFS_COMPRESSION_XZ
49 config TARGET_INITRAMFS_COMPRESSION_ZSTD
55 prompt "Use external cpio" if TARGET_ROOTFS_INITRAMFS
58 Kernel uses specified external cpio as INITRAMFS_SOURCE.
60 config TARGET_INITRAMFS_FORCE
62 depends on TARGET_ROOTFS_INITRAMFS
65 Ignore the initramfs passed by the bootloader.
67 config TARGET_ROOTFS_INITRAMFS_SEPARATE
68 bool "separate ramdisk"
69 depends on USES_SEPARATE_INITRAMFS && TARGET_ROOTFS_INITRAMFS && !TARGET_INITRAMFS_FORCE
70 default y if USES_SEPARATE_INITRAMFS
72 Generate separate initrd.cpio instead of embedding it.
73 This is useful for generating images with a dedicated
74 ramdisk e.g. in U-Boot's uImage and uImage.FIT formats.
76 comment "Root filesystem archives"
78 config TARGET_ROOTFS_CPIOGZ
80 default y if USES_CPIOGZ
82 Build a compressed cpio archive of the root filesystem.
84 config TARGET_ROOTFS_TARGZ
86 default y if USES_TARGZ
88 Build a compressed tar archive of the root filesystem.
90 comment "Root filesystem images"
92 menuconfig TARGET_ROOTFS_EXT4FS
94 default y if USES_EXT4
96 Build an ext4 root filesystem.
98 config TARGET_EXT4_RESERVED_PCT
99 int "Percentage of reserved blocks in root filesystem"
100 depends on TARGET_ROOTFS_EXT4FS
103 Select the percentage of reserved blocks in the root filesystem.
106 prompt "Root filesystem block size"
107 default TARGET_EXT4_BLOCKSIZE_4K
108 depends on TARGET_ROOTFS_EXT4FS
110 Select the block size of the root filesystem.
112 config TARGET_EXT4_BLOCKSIZE_4K
115 config TARGET_EXT4_BLOCKSIZE_2K
118 config TARGET_EXT4_BLOCKSIZE_1K
122 config TARGET_EXT4_BLOCKSIZE
124 default 4096 if TARGET_EXT4_BLOCKSIZE_4K
125 default 2048 if TARGET_EXT4_BLOCKSIZE_2K
126 default 1024 if TARGET_EXT4_BLOCKSIZE_1K
127 depends on TARGET_ROOTFS_EXT4FS
129 config TARGET_EXT4_JOURNAL
130 bool "Create a journaling filesystem"
131 depends on TARGET_ROOTFS_EXT4FS
134 Create an ext4 filesystem with a journal.
136 config TARGET_ROOTFS_JFFS2
138 depends on USES_JFFS2
140 Build a JFFS2 root filesystem.
142 config TARGET_ROOTFS_JFFS2_NAND
143 bool "jffs2 for NAND"
144 default y if USES_JFFS2_NAND
145 depends on USES_JFFS2_NAND
147 Build a JFFS2 root filesystem for NAND flash.
149 menuconfig TARGET_ROOTFS_SQUASHFS
151 default y if USES_SQUASHFS
153 Build a squashfs-lzma root filesystem.
155 config TARGET_SQUASHFS_BLOCK_SIZE
156 int "Block size (in KiB)"
157 depends on TARGET_ROOTFS_SQUASHFS
158 default 64 if LOW_MEMORY_FOOTPRINT
159 default 1024 if (SMALL_FLASH && !LOW_MEMORY_FOOTPRINT)
162 menuconfig TARGET_ROOTFS_UBIFS
164 default y if USES_UBIFS
165 depends on USES_UBIFS
167 Build a UBIFS root filesystem.
171 default TARGET_UBIFS_COMPRESSION_ZLIB
172 depends on TARGET_ROOTFS_UBIFS
174 Select compression type
176 config TARGET_UBIFS_COMPRESSION_NONE
179 config TARGET_UBIFS_COMPRESSION_LZO
182 config TARGET_UBIFS_COMPRESSION_ZLIB
186 config TARGET_UBIFS_FREE_SPACE_FIXUP
187 bool "free space fixup" if TARGET_ROOTFS_UBIFS
190 The filesystem free space has to be fixed up on first mount.
192 config TARGET_UBIFS_JOURNAL_SIZE
194 prompt "journal size" if TARGET_ROOTFS_UBIFS
198 bool "Build GRUB images (Linux x86 or x86_64 host only)"
199 depends on TARGET_x86
200 depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
202 select PACKAGE_grub2-bios-setup
205 config GRUB_EFI_IMAGES
206 bool "Build GRUB EFI images (Linux x86 or x86_64 host only)"
207 depends on TARGET_x86
208 depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
210 select PACKAGE_grub2-efi
211 select PACKAGE_grub2-bios-setup
212 select PACKAGE_kmod-fs-vfat
216 bool "Use Console Terminal (in addition to Serial)"
217 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
221 string "Serial port device"
222 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
226 int "Serial port baud rate"
227 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
228 default 38400 if TARGET_x86_generic
231 config GRUB_FLOWCONTROL
232 bool "Use RTE/CTS on serial console"
233 depends on GRUB_SERIAL != ""
237 string "Extra kernel boot options"
238 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
240 If you don't know, just leave it blank.
243 string "Seconds to wait before booting the default entry"
244 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
247 If you don't know, 5 seconds is a reasonable default.
250 string "Title for the menu entry in GRUB"
251 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
254 This is the title of the GRUB menu entry.
255 If unspecified, it defaults to OpenWrt.
258 bool "Build LiveCD image (ISO)"
259 depends on TARGET_x86
260 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
263 bool "Build VirtualBox image files (VDI)"
264 depends on TARGET_x86
265 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
266 select PACKAGE_kmod-e1000
269 bool "Build VMware image files (VMDK)"
270 depends on TARGET_x86
271 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
272 select PACKAGE_kmod-e1000
275 bool "Build Hyper-V image files (VHDX)"
276 depends on TARGET_x86
277 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
278 select PACKAGE_kmod-e1000
280 config TARGET_IMAGES_GZIP
282 depends on TARGET_ROOTFS_EXT4FS || TARGET_x86 || TARGET_armvirt || TARGET_malta
285 comment "Image Options"
287 source "target/linux/*/image/Config.in"
289 config TARGET_KERNEL_PARTSIZE
290 int "Kernel partition size (in MiB)"
291 depends on USES_BOOT_PART
292 default 8 if TARGET_apm821xx_sata
293 default 64 if TARGET_bcm27xx
296 config TARGET_ROOTFS_PARTSIZE
297 int "Root filesystem partition size (in MiB)"
298 depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS
301 Select the root filesystem partition size.
303 config TARGET_ROOTFS_PARTNAME
304 string "Root partition on target device"
305 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
307 Override the root partition on the final device. If left empty,
308 it will be mounted by PARTUUID which makes the kernel find the
309 appropriate disk automatically.
311 config TARGET_ROOTFS_PERSIST_VAR
312 bool "Make /var persistent"
315 Do not symlink /var to /tmp, so that its content will persist
316 across reboots. When enabled, /var/run will still be linked