What: /sys/bus/platform/devices/occ-hwmon.X/ffdc KernelVersion: 5.15 Contact: eajames@linux.ibm.com Description: 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.