Say, could it also work to load the bootloader and the kernel from
network, i.e. similar to how OpenBSD can be used on older Indys whose
firmware can only use ECOFF binaries:
```
[...]
On IP22-class systems, or if the PROM complains about the file format,
such as:
>> bootp()bsd.rd.IP22
[...]
Cannot load bootp()bsd.rd.IP22.
Problem reading elf structure at offset -2004877312.
Unable to execute bootp()bsd.rd.IP22
... then this means that the PROM is too old to know about the ELF
file format the OpenBSD kernel is provided in. In this case, the
kernel needs to be booted from the ``bootecoff'' boot block, which has
to be put on the tftp server as well, with:
>> bootp()bootecoff bootp()bsd.rd.IP22
```
from [1].
[1]: https://ftp.openbsd.org/pub/OpenBSD/6.3/sgi/INSTALL.sgi