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lastdragon
2026-09-06 12:53:21 -06:00
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linux-7.2.3/Documentation/ABI/testing/sysfs-bus-platform-devices-occ-hwmon
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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.