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+What: /sys/firmware/opal/dump
+Date: Feb 2014
+Contact: Stewart Smith <stewart@linux.vnet.ibm.com>
+Description:
+ This directory exposes interfaces for interacting with
+ the FSP and platform dumps through OPAL firmware interface.
+
+ This is only for the powerpc/powernv platform.
+
+ =============== ===============================================
+ initiate_dump: When '1' is written to it,
+ we will initiate a dump.
+ Read this file for supported commands.
+
+ 0xXX-0xYYYY: A directory for dump of type 0xXX and
+ id 0xYYYY (in hex). The name of this
+ directory should not be relied upon to
+ be in this format, only that it's unique
+ among all dumps. For determining the type
+ and ID of the dump, use the id and type files.
+ Do not rely on any particular size of dump
+ type or dump id.
+ =============== ===============================================
+
+ Each dump has the following files:
+
+ =============== ===============================================
+ id: An ASCII representation of the dump ID
+ in hex (e.g. '0x01')
+ type: An ASCII representation of the type of
+ dump in the format "0x%x %s" with the ID
+ in hex and a description of the dump type
+ (or 'unknown').
+ Type '0xffffffff unknown' is used when
+ we could not get the type from firmware.
+ e.g. '0x02 System/Platform Dump'
+ dump: A binary file containing the dump.
+ The size of the dump is the size of this file.
+ acknowledge: When 'ack' is written to this, we will
+ acknowledge that we've retrieved the
+ dump to the service processor. It will
+ then remove it, making the dump
+ inaccessible.
+ Reading this file will get a list of
+ supported actions.
+ =============== ===============================================