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 (Linux x86 or x86_64 host only)"
208 depends on TARGET_x86 || TARGET_armsr
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_kmod-fs-vfat
218 bool "Use Console Terminal (in addition to Serial)"
219 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
223 int "Serial port baud rate"
224 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
225 default 38400 if TARGET_x86_generic
228 config GRUB_FLOWCONTROL
229 bool "Use RTE/CTS on serial console"
230 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
231 depends on TARGET_SERIAL != ""
234 string "Extra kernel boot options"
235 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
237 If you don't know, just leave it blank.
240 string "Seconds to wait before booting the default entry"
241 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
244 If you don't know, 5 seconds is a reasonable default.
247 string "Title for the menu entry in GRUB"
248 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
251 This is the title of the GRUB menu entry.
252 If unspecified, it defaults to OpenWrt.
255 bool "Build LiveCD image (ISO)"
256 depends on TARGET_x86
257 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
260 bool "Build VirtualBox image files (VDI)"
261 depends on TARGET_x86
262 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
263 select PACKAGE_kmod-e1000
266 bool "Build VMware image files (VMDK)"
267 depends on TARGET_x86 || TARGET_armsr
268 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
269 select PACKAGE_kmod-e1000
272 bool "Build Hyper-V image files (VHDX)"
273 depends on TARGET_x86
274 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
275 select PACKAGE_kmod-e1000
278 string "Serial port device"
279 depends on TARGET_x86 || TARGET_armsr
282 config TARGET_IMAGES_GZIP
284 depends on TARGET_ROOTFS_EXT4FS || TARGET_x86 || TARGET_armsr || TARGET_malta
287 comment "Image Options"
289 source "target/linux/*/image/Config.in"
290 source "target/linux/*/*/image/Config.in"
292 config TARGET_KERNEL_PARTSIZE
293 int "Kernel partition size (in MiB)"
294 depends on USES_BOOT_PART
295 default 8 if TARGET_apm821xx_sata
296 default 64 if TARGET_bcm27xx
297 default 128 if TARGET_armsr
300 config TARGET_ROOTFS_PARTSIZE
301 int "Root filesystem partition size (in MiB)"
302 depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS
305 Select the root filesystem partition size.
307 config TARGET_ROOTFS_PARTNAME
308 string "Root partition on target device"
309 depends on GRUB_IMAGES || GRUB_EFI_IMAGES
311 Override the root partition on the final device. If left empty,
312 it will be mounted by PARTUUID which makes the kernel find the
313 appropriate disk automatically.
315 config TARGET_ROOTFS_PERSIST_VAR
316 bool "Make /var persistent"
318 Do not symlink /var to /tmp, so that its content will persist
319 across reboots. When enabled, /var/run will still be linked