config FS_SQUASHFS bool "Enable SquashFS filesystem support" select ZLIB_UNCOMPRESS help This provides support for reading images from SquashFS filesystem. Squashfs is a compressed read-only filesystem for Linux. It uses zlib, lz4, lzo, or xz compression to compress files, inodes and directories. Squashfs is intended for general read-only filesystem use, for archival use (i.e. in cases where a .tar.gz file may be used), and in constrained block device/memory systems (e.g. embedded systems) where low overhead is needed.