Try to read grml-autoconfig bootparameters from 9p virtio filesystem.
-rw-r--r-- 6336 autoconfig
-rwxr-xr-x 69841 autoconfig.functions
-rw-r--r-- 356 autoconfig.local
drwxr-xr-x - bin
drwxr-xr-x - debian
drwxr-xr-x - doc
drwxr-xr-x - etc
-rwxr-xr-x 5592 grml-autoconfig
-rw-r--r-- 31472 language-functions
drwxr-xr-x - sbin
drwxr-xr-x - tests