From RCS Wiki
(Redirected from Flexible Service Interface)
Jump to navigation Jump to search

Flexible Service Interface (FSI): Custom serial interface present on OpenPOWER CPUs. Functions as a master control interface for the CPU, usually connected to the BMC and used by it to manage the CPU (e.g. directing the CPU to begin booting). Can also be used as a hardware debugging interface if secure boot is disabled. See also OpenFSI Specification (FSI bus protocol)