Dell BIOS Flags (Type 177)

Source: the Dell SMBIOS WMI driver of Linux, dell-smbios-wmi.c, dmidecode, dmioem.c, and the dumps of the data corpus.

Tells the features of the firmware the Dell drivers rely on, of which only the support of ACPI WMI is known. dmidecode reads the flags as a QWORD, and the Dell SMBIOS WMI driver of Linux as a WORD; the bytes past the first word are not known to carry anything. The driver reads the structures of 12 bytes and of handle 0xB100 only, which every structure of the data corpus is.

Table 1. Dell BIOS Flags structure
Offset	Version	Name	Length	Value	Description
`0x00`	2.0+	Type	`BYTE`	`177`	Dell BIOS Flags indicator
`0x01`	2.0+	Length	`BYTE`	Varies	Length of the structure
`0x02`	2.0+	Handle	`WORD`	Varies
`0x04`	2.0+	Flags	`WORD`	`BITFIELD`	Bit 1: ACPI WMI is supported
`0x06`	2.0+	Reserved	6 BYTEs	Varies	Rest of the flags, `0` in all known data