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_ZSTD if TARGET_qualcommax
21 default TARGET_INITRAMFS_COMPRESSION_XZ if USES_SEPARATE_INITRAMFS
22 default TARGET_INITRAMFS_COMPRESSION_NONE
23 depends on TARGET_ROOTFS_INITRAMFS
25 Select ramdisk compression.
27 config TARGET_INITRAMFS_COMPRESSION_NONE
30 config TARGET_INITRAMFS_COMPRESSION_GZIP
33 config TARGET_INITRAMFS_COMPRESSION_BZIP2
36 config TARGET_INITRAMFS_COMPRESSION_LZMA
39 config TARGET_INITRAMFS_COMPRESSION_LZO
42 config TARGET_INITRAMFS_COMPRESSION_LZ4
45 config TARGET_INITRAMFS_COMPRESSION_XZ
48 config TARGET_INITRAMFS_COMPRESSION_ZSTD
54 prompt "Use external cpio" if TARGET_ROOTFS_INITRAMFS
57 Kernel uses specified external cpio as INITRAMFS_SOURCE.
59 config TARGET_INITRAMFS_FORCE
61 depends on TARGET_ROOTFS_INITRAMFS
63 Ignore the initramfs passed by the bootloader.
65 config TARGET_ROOTFS_INITRAMFS_SEPARATE
66 bool "separate ramdisk"
67 depends on USES_SEPARATE_INITRAMFS && TARGET_ROOTFS_INITRAMFS && !TARGET_INITRAMFS_FORCE
68 default y if USES_SEPARATE_INITRAMFS
70 Generate separate initrd.cpio instead of embedding it.
71 This is useful for generating images with a dedicated
72 ramdisk e.g. in U-Boot's uImage and uImage.FIT formats.
74 comment "Root filesystem archives"
76 config TARGET_ROOTFS_CPIOGZ
78 default y if USES_CPIOGZ
80 Build a compressed cpio archive of the root filesystem.
82 config TARGET_ROOTFS_TARGZ
84 default y if USES_TARGZ
86 Build a compressed tar archive of the root filesystem.
88 comment "Root filesystem images"
90 menuconfig TARGET_ROOTFS_EXT4FS
92 default y if USES_EXT4
94 Build an ext4 root filesystem.
96 config TARGET_EXT4_RESERVED_PCT
97 int "Percentage of reserved blocks in root filesystem"
98 depends on TARGET_ROOTFS_EXT4FS
101 Select the percentage of reserved blocks in the root filesystem.
104 prompt "Root filesystem block size"
105 default TARGET_EXT4_BLOCKSIZE_4K
106 depends on TARGET_ROOTFS_EXT4FS
108 Select the block size of the root filesystem.
110 config TARGET_EXT4_BLOCKSIZE_4K
113 config TARGET_EXT4_BLOCKSIZE_2K
116 config TARGET_EXT4_BLOCKSIZE_1K
120 config TARGET_EXT4_BLOCKSIZE
122 default 4096 if TARGET_EXT4_BLOCKSIZE_4K
123 default 2048 if TARGET_EXT4_BLOCKSIZE_2K
124 default 1024 if TARGET_EXT4_BLOCKSIZE_1K
125 depends on TARGET_ROOTFS_EXT4FS
127 config TARGET_EXT4_JOURNAL
128 bool "Create a journaling filesystem"
129 depends on TARGET_ROOTFS_EXT4FS
132 Create an ext4 filesystem with a journal.
134 config TARGET_ROOTFS_JFFS2
136 depends on USES_JFFS2
138 Build a JFFS2 root filesystem.
140 config TARGET_ROOTFS_JFFS2_NAND
141 bool "jffs2 for NAND"
142 default y if USES_JFFS2_NAND
143 depends on USES_JFFS2_NAND
145 Build a JFFS2 root filesystem for NAND flash.
147 menuconfig TARGET_ROOTFS_SQUASHFS
149 default y if USES_SQUASHFS
151 Build a squashfs root filesystem.
153 config TARGET_SQUASHFS_BLOCK_SIZE
154 int "Block size (in KiB)"
155 depends on TARGET_ROOTFS_SQUASHFS
156 default 64 if LOW_MEMORY_FOOTPRINT
157 default 1024 if (SMALL_FLASH && !LOW_MEMORY_FOOTPRINT)
160 Select squashfs block size, must be one of:
161 4, 8, 16, 32, 64, 128, 256, 512, 1024
163 menuconfig TARGET_ROOTFS_UBIFS
165 default y if USES_UBIFS
166 depends on USES_UBIFS
168 Build a UBIFS root filesystem.
172 default TARGET_UBIFS_COMPRESSION_ZLIB
173 depends on TARGET_ROOTFS_UBIFS
175 Select compression type
177 config TARGET_UBIFS_COMPRESSION_NONE
180 config TARGET_UBIFS_COMPRESSION_LZO
183 config TARGET_UBIFS_COMPRESSION_ZLIB
187 config TARGET_UBIFS_FREE_SPACE_FIXUP
188 bool "free space fixup" if TARGET_ROOTFS_UBIFS
191 The filesystem free space has to be fixed up on first mount.
193 config TARGET_UBIFS_JOURNAL_SIZE
195 prompt "journal size" if TARGET_ROOTFS_UBIFS
199 bool "Build GRUB images (Linux x86 or x86_64 host only)"
200 depends on TARGET_x86
201 depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
203 select PACKAGE_grub2-bios-setup
206 config GRUB_EFI_IMAGES
207 bool "Build GRUB EFI images"
208 depends on TARGET_x86 || TARGET_armsr || TARGET_loongarch64
209 depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
210 select PACKAGE_grub2 if TARGET_x86
211 select PACKAGE_grub2-efi if TARGET_x86
212 select PACKAGE_grub2-bios-setup if TARGET_x86
213 select PACKAGE_grub2-efi-arm if TARGET_armsr
214 select PACKAGE_grub2-efi-loongarch64 if TARGET_loongarch64
215 select PACKAGE_kmod-fs-vfat
219 bool "Use Console Terminal (in addition to Serial)"
220 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
224 int "Serial port baud rate"
225 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
226 default 38400 if TARGET_x86_generic
229 config GRUB_FLOWCONTROL
230 bool "Use RTE/CTS on serial console"
231 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
232 depends on TARGET_SERIAL != ""
235 string "Extra kernel boot options"
236 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
238 If you don't know, just leave it blank.
241 string "Seconds to wait before booting the default entry"
242 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
245 If you don't know, 5 seconds is a reasonable default.
248 string "Title for the menu entry in GRUB"
249 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
252 This is the title of the GRUB menu entry.
253 If unspecified, it defaults to OpenWrt.
256 bool "Build LiveCD image (ISO)"
257 depends on TARGET_x86
258 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
261 bool "Build VirtualBox image files (VDI)"
262 depends on TARGET_x86
263 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
264 select PACKAGE_kmod-e1000
267 bool "Build VMware image files (VMDK)"
268 depends on TARGET_x86 || TARGET_armsr
269 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
270 select PACKAGE_kmod-e1000
273 bool "Build Hyper-V image files (VHDX)"
274 depends on TARGET_x86
275 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
276 select PACKAGE_kmod-e1000
279 string "Serial port device"
280 depends on TARGET_x86 || TARGET_armsr || TARGET_loongarch64
283 config TARGET_IMAGES_GZIP
285 depends on TARGET_ROOTFS_EXT4FS || TARGET_x86 || TARGET_armsr || TARGET_malta || TARGET_loongarch64
288 comment "Image Options"
290 source "target/linux/*/image/Config.in"
291 source "target/linux/*/*/image/Config.in"
293 config TARGET_KERNEL_PARTSIZE
294 int "Kernel partition size (in MiB)"
295 depends on USES_BOOT_PART
296 default 8 if TARGET_apm821xx_sata
297 default 64 if TARGET_bcm27xx
298 default 128 if TARGET_armsr
301 config TARGET_ROOTFS_PARTSIZE
302 int "Root filesystem partition size (in MiB)"
303 depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS
304 default 232 if TARGET_loongarch64
305 default 448 if TARGET_mediatek
308 Select the root filesystem partition size.
310 config TARGET_ROOTFS_PARTNAME
311 string "Root partition on target device"
312 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
314 Override the root partition on the final device. If left empty,
315 it will be mounted by PARTUUID which makes the kernel find the
316 appropriate disk automatically.
318 config TARGET_ROOTFS_PERSIST_VAR
319 bool "Make /var persistent"
321 Do not symlink /var to /tmp, so that its content will persist
322 across reboots. When enabled, /var/run will still be linked