OpenPOWER Firmware
OpenPOWER Firmware is an open-source alternative to OpenFirmware and proprietary IBM firmware used on Power machines.[1] It is a general name for many separate pieces of software used to start an IBM POWER chip.[2]
Components
- Self-Boot Engine (SBE) code - loads Hostboot an a CPU core
- Hostboot - loads Skiboot
- Skiboot - implements OpenPOWER Abstraction Layer (OPAL), loads Petitboot, and loads OCC code into the OCC core
- Petitboot - loads the operating system
- On-Chip Controller (OCC) code - controls thermal regulation on certain IBM POWER chips (such as POWER9, POWER8)
References
- ↑ Kerr, Jeremy. OpenPOWER: building an open-source software stack from bare metal. LCA 2015
- ↑ Smith, Stewart. Adventures in OpenPOWER Firmware. LCA 2016
