Slimline Open Firmware (SLOF) is initialization and boot source code based on the IEEE-1275 (Open Firmware) standard, developed by engineers of the IBM Corporation.
The SLOF source code provides illustrates what's needed to initialize and boot Linux or a hypervisor on the industry Open Firmware boot standard.
The link below offers:
- Pseudo Open Firmware for prototyping, test, and debug
- Low Level Firmware for IBM's JS20 (closed source)