gudt/docs/E5_nvram.md

Non-Volatile RAM (CMOS)

Node format

Offset	Size	Description
0	1	type = 0xe5
1	1	flags (bit 0..3: alignment, bit 4..7: 0)
2	2	parent node
4	4	NVRAM/CMOS size
8	8	NVRAM/CMOS address

Do not confuse with NVSMEM (type 0xdd), this NVRAM is preserved by the hardware.

JSON format

{
    "type": "NVRAM",
    "parent": (string) parent device's name,
    "unit": "byte" / "word" / "dword" / "qword",
    "size": (number) NVRAM/CMOS size,
    "base": (number) NVRAM/CMOS address
}