Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/sys/kernel/boot_params
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:		December 2013
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) Contact:	Dave Young <dyoung@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Description:	The /sys/kernel/boot_params directory contains two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 		files: "data" and "version" and one subdirectory "setup_data".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		It is used to export the kernel boot parameters of an x86
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 		platform to userspace for kexec and debugging purpose.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 		If there's no setup_data in boot_params the subdirectory will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 		not be created.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 		"data" file is the binary representation of struct boot_params.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 		"version" file is the string representation of boot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 		protocol version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 		"setup_data" subdirectory contains the setup_data data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		structure in boot_params. setup_data is maintained in kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		as a link list. In "setup_data" subdirectory there's one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		subdirectory for each link list node named with the number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		of the list nodes. The list node subdirectory contains two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		files "type" and "data". "type" file is the string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		representation of setup_data type. "data" file is the binary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		representation of setup_data payload.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		The whole boot_params directory structure is like below::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		  /sys/kernel/boot_params
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		  |__ data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		  |__ setup_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		  |   |__ 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		  |   |   |__ data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		  |   |   |__ type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		  |   |__ 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		  |       |__ data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		  |       |__ type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		  |__ version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) Users:		Kexec