MIRRORS/linux-imx
1
0
Fork 0
mirror of https://github.com/nxp-imx/linux-imx.git synced 2025-09-03 10:33:11 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity
lf-6.6.y
linux-imx/Documentation/ABI/testing/sysfs-bus-platform-devices-occ-hwmon
Eddie James 4cf400e120 docs: ABI: testing: Document the OCC hwmon FFDC binary interface 
Add documentation for the new binary sysfs that will dump the SBEFIFO
FFDC.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20211019205307.36946-4-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
2021-10-22 09:54:32 +10:30

698 B
Raw Permalink Blame History

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.