Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/sys/firmware/secvar
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) Contact:	Nayna Jain <nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Description:	This directory is created if the POWER firmware supports OS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 		secureboot, thereby secure variables. It exposes interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		for reading/writing the secure variables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) What:		/sys/firmware/secvar/vars
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) Contact:	Nayna Jain <nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Description:	This directory lists all the secure variables that are supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 		by the firmware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) What:		/sys/firmware/secvar/format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) Contact:	Nayna Jain <nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) Description:	A string indicating which backend is in use by the firmware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		This determines the format of the variable and the accepted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		format of variable updates.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) What:		/sys/firmware/secvar/vars/<variable name>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) Contact:	Nayna Jain <nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) Description:	Each secure variable is represented as a directory named as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		<variable_name>. The variable name is unique and is in ASCII
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		representation. The data and size can be determined by reading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		their respective attribute files.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) What:		/sys/firmware/secvar/vars/<variable_name>/size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) Contact:	Nayna Jain <nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) Description:	An integer representation of the size of the content of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		variable. In other words, it represents the size of the data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) What:		/sys/firmware/secvar/vars/<variable_name>/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) Contact:	Nayna Jain h<nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) Description:	A read-only file containing the value of the variable. The size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		of the file represents the maximum size of the variable data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) What:		/sys/firmware/secvar/vars/<variable_name>/update
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) Date:		August 2019
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) Contact:	Nayna Jain <nayna@linux.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) Description:	A write-only file that is used to submit the new value for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		variable. The size of the file represents the maximum size of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		the variable data that can be written.