Sun/Oracle has been designing workstations and servers for over 25 years. In that time, both the architecture and the associated firmware spanned many different implementations, names, and versioning schemes. This table is a brief overview of the major iterations. For brevity, the table includes only SPARC systems.
Overview of Firmware Releases for SPARC Systems
For reference, note that Oracle has a full line of server systems based on x86/x64 processors. The history on the non-SPARC systems side might be filled in at a later date.
All current products provide Oracle Single System Management utilities which include a package of firmware that includes the BIOS, ILOM Service Processor, installation assistants and various other tools and drivers, including support for Windows and Linux Operating Systems, in addition to Oracle Solaris.
There are a number of other types of firmware associated with Oracle products and niche markets that Sun/Oracle is (or was) involved in: