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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
    
    			  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
    
    			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.
    
    			prompt "Root filesystem block size"
    
    			default TARGET_EXT4_BLOCKSIZE_4K
    
    			depends on TARGET_ROOTFS_EXT4FS
    
    			  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
    
    			  Create an ext4 filesystem with a journal.
    
    	config TARGET_ROOTFS_JFFS2
    		bool "jffs2"
    
    
    	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)
    
    			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
    
    
    		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-bios-setup
    
    	config GRUB_EFI_IMAGES
    		bool "Build GRUB EFI images (Linux x86 or x86_64 host only)"
    
    		depends on TARGET_x86 || TARGET_armsr
    
    		depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
    
    		select PACKAGE_grub2 if TARGET_x86
    		select PACKAGE_grub2-efi if TARGET_x86
    		select PACKAGE_grub2-bios-setup if TARGET_x86
    
    		select PACKAGE_grub2-efi-arm if TARGET_armsr
    
    		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
    
    
    	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 GRUB_IMAGES || GRUB_EFI_IMAGES
    
    		select PACKAGE_kmod-e1000
    
    
    	config VMDK_IMAGES
    		bool "Build VMware image files (VMDK)"
    
    		depends on TARGET_x86 || TARGET_armsr
    
    		depends on GRUB_IMAGES || GRUB_EFI_IMAGES
    
    	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_armsr || TARGET_malta
    
    	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 128 if TARGET_armsr
    
    	config TARGET_ROOTFS_PARTSIZE
    
    		int "Root filesystem partition size (in MiB)"
    
    		depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS
    
    		  Select the root filesystem partition size.
    
    	config TARGET_ROOTFS_PARTNAME
    		string "Root partition on target device"
    
    		depends on GRUB_IMAGES || GRUB_EFI_IMAGES
    
    		  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.