1 .. SPDX-License-Identifier: GPL-2.0-only 1 .. SPDX-License-Identifier: GPL-2.0-only
2 2
3 ============================== 3 ==============================
4 WMI embedded Binary MOF driver 4 WMI embedded Binary MOF driver
5 ============================== 5 ==============================
6 6
7 Introduction 7 Introduction
8 ============ 8 ============
9 9
10 Many machines embed WMI Binary MOF (Managed Ob 10 Many machines embed WMI Binary MOF (Managed Object Format) metadata used to
11 describe the details of their ACPI WMI interfa 11 describe the details of their ACPI WMI interfaces. The data can be decoded
12 with tools like `bmfdec <https://github.com/pa 12 with tools like `bmfdec <https://github.com/pali/bmfdec>`_ to obtain a
13 human readable WMI interface description, whic 13 human readable WMI interface description, which is useful for developing
14 new WMI drivers. 14 new WMI drivers.
15 15
16 The Binary MOF data can be retrieved from the 16 The Binary MOF data can be retrieved from the ``bmof`` sysfs attribute of the
17 associated WMI device. Please note that multip 17 associated WMI device. Please note that multiple WMI devices containing Binary
18 MOF data can exist on a given system. 18 MOF data can exist on a given system.
19 19
20 WMI interface 20 WMI interface
21 ============= 21 =============
22 22
23 The Binary MOF WMI device is identified by the 23 The Binary MOF WMI device is identified by the WMI GUID ``05901221-D566-11D1-B2F0-00A0C9062910``.
24 The Binary MOF can be obtained by doing a WMI 24 The Binary MOF can be obtained by doing a WMI data block query. The result is
25 then returned as an ACPI buffer with a variabl 25 then returned as an ACPI buffer with a variable size.
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.