There's a "roflash" driver that allows cramfs filesystem to be simultaneously
linear + block device mounted.

# cat /proc/roflash_info 
ROFLASH Driver status: Ready

ROFLASH area name is rootfs
ROFLASH area size = 26083328 bytes
ROFLASH area offset = 1179648 bytes
ROFLASH area l_x_b(10)
ROFLASH area name is NO-USE
ROFLASH area size = 0 bytes
ROFLASH area offset = 27262976 bytes
ROFLASH area l_x_b(1000)
ROFLASH area name is setup
ROFLASH area size = 131072 bytes
ROFLASH area offset = 33161216 bytes
ROFLASH area l_x_b(1000)



there's a format tool at /.backup/g3format2, which will be called if the "language pack" filesystem fails to mount