blob: b24d7ab0278f339161415873e3f97b762a313b2b [file] [log] [blame]
What: /sys/bus/platform/devices/occ-hwmon.X/ffdc
KernelVersion: 5.15
Contains the First Failure Data Capture from the SBEFIFO
hardware, if there is any from a previous transfer. Otherwise,
the file is empty. The data is cleared when it's been
completely read by a user. As the name suggests, only the data
from the first error is saved, until it's cleared upon read. The OCC hwmon driver, running on
a Baseboard Management Controller (BMC), communicates with
POWER9 and up processors over the Self-Boot Engine (SBE) FIFO.
In many error conditions, the SBEFIFO will return error data
indicating the type of error and system state, etc.