Origin for each line in bootfs.init from check-in 8f80b79392:

2f11a995dc 2019-10-19        arcade: # vim:ft=make:
2f11a995dc 2019-10-19        arcade: 
8f80b79392 2019-10-20        arcade: bootfs: fsck
2f11a995dc 2019-10-19        arcade: 	: Checking whether we need /boot mounted.
8f80b79392 2019-10-20        arcade: 	mount -vadr | grep -q ' /boot$$' && mount -r /boot || exit 0