| .. SPDX-License-Identifier: GPL-2.0-only |
| |
| ============================== |
| WMI embedded Binary MOF driver |
| ============================== |
| |
| Introduction |
| ============ |
| |
| Many machines embed WMI Binary MOF (Managed Object Format) metadata used to |
| describe the details of their ACPI WMI interfaces. The data can be decoded |
| with tools like `bmfdec <https://github.com/pali/bmfdec>`_ to obtain a |
| human readable WMI interface description, which is useful for developing |
| new WMI drivers. |
| |
| The Binary MOF data can be retrieved from the ``bmof`` sysfs attribute of the |
| associated WMI device. Please note that multiple WMI devices containing Binary |
| MOF data can exist on a given system. |
| |
| WMI interface |
| ============= |
| |
| The Binary MOF WMI device is identified by the WMI GUID ``05901221-D566-11D1-B2F0-00A0C9062910``. |
| The Binary MOF can be obtained by doing a WMI data block query. The result is |
| then returned as an ACPI buffer with a variable size. |
