Don't call prom_open() multiple times. This confuses some versions of SRM and makes it impossible to boot from floppy and CD on some AlphaServer platforms.
Don't call prom_open() multiple times. This confuses some versions of SRM
and makes it impossible to boot from floppy and CD on some AlphaServer
platforms.

Detective work by: Michael Richards <michael@fastmail.ca>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase