gudt/docs/DB_cmdline.md

Boot Command line

Node format

Offset	Size	Description
0	1	type = 0xdb
1	1	flags = 0
2	2	parent node = 0
4	4	boot command line size
8	8	boot command line address

This node should not appear in GUDT blobs on disk, rather it is added by the boot loader before it passes the GUDT to a kernel. If base is smaller than header size (65536 tops) then it points to a string in the string table, otherwise it is an absolute memory address.

JSON format

{
    "type": "CMDLINE",
    "parent": 0,
    "size": (number) boot command line size,
    "base": (number) boot command line address
}