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.
|
=============== ===============================================
|
