Something

rootfs / rootfs rw 0 0
/dev/root / cramfs rw 0 0
none /dev devfs rw 0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
tmpfs /tmp tmpfs rw 0 0
/dev/mtdblock/8 /mnt/jffs2 jffs2 rw 0 0
/dev/mtdblock_bbs/6 /opt cramfs rw 0 0
/dev/mtdblock_bbs/7 /usr/resource cramfs rw 0 0
/dev/mtdblock/8 /usr/share jffs2 rw 0 0
/dev/mmc/part1 /mnt/fat vfat ro 0 0