sysfs-platform-intel-wmi-sbl-fw-update

 1What:		/sys/bus/wmi/devices/44FADEB1-B204-40F2-8581-394BBDC1B651[-X]/firmware_update_request
 2Date:		April 2020
 3KernelVersion:	5.7
 4Contact:	"Jithu Joseph" <jithu.joseph@intel.com>
 5Description:
 6		Allow user space entities to trigger update of Slim
 7		Bootloader (SBL). This attribute normally has a value
 8		of 0 and userspace can signal SBL to update firmware,
 9		on next reboot, by writing a value of 1.
10		There are two available states:
11
12		    * 0 -> Skip firmware update while rebooting
13		    * 1 -> Attempt firmware update on next reboot