The following patch is a modified version of the patch written by j.j.vanderheijden@home.nl and allows aboot to handle XFS partitions. It has been tested against a Digital Personal Workstation and seems to work just fine.
Created attachment 69176 [details, diff] Patch against sys-boot/aboot-1.0_pre20040408
If you are still looking for bringing XFS support to aboot then I would suggest you to send an updated patch upstream, this has previously been done at Debian and since then nothing was heard about it; I'm a bit afraid upstream support may be dead. Permission to close was granted by one of the maintainers (ago).