Intel Silicon View Technology Milestones (Type 222)

Source: reverse engineered from the dumps of the data corpus.

Lists the milestones of the boot the firmware reports to the debug and validation tools of Intel Silicon View Technology (SVT). A group association (type 14) named Intel® Silicon View Technology often refers to the structure. The reference code gives the structure type 222, which Dell places at type 206, while HP servers carry none.

Table 1. Intel Silicon View Technology Milestones structure
Offset	Version	Name	Length	Value	Description
`0x00`	2.0+	Type	`BYTE`	`222`	Intel Silicon View Technology Milestones indicator, `206` on Dell platforms
`0x01`	2.0+	Length	`BYTE`	`0x08` + 2 × Milestone Count	Length of the structure
`0x02`	2.0+	Handle	`WORD`	Varies
`0x04`	2.0+	Version	`BYTE`	`NUMBER`	`1` in all known data
`0x05`	2.0+	Parameter	`WORD`	Varies	Meaning not established, `0x0099` in all known data
`0x07`	2.0+	Milestone Count	`BYTE`	`NUMBER`
`0x08`	2.0+	Milestones	Varies	Varies	Milestones, see Milestones

1. Intel Silicon View Technology Milestones — Milestones

Table 2. Intel Silicon View Technology Milestones: Milestone
Offset	Name	Length	Value	Description
`0x00`	Code	`BYTE`	`NUMBER`	`0x10`, `0x20` and `0x30` in all known data
`0x01`	Name	`BYTE`	`STRING`	`Memory Init Complete`, `End of DXE Phase` and `BIOS Boot Complete`

2. Intel Silicon View Technology Milestones — Aligned Layout

Some firmware does not pack the structure, e.g. the one of Dell XPS 13 9365, which carries 01 00 99 00 03 10 01 20 02 30 03 00 where other firmware carries 01 99 00 03 10 01 20 02 30 03: the parameter is aligned to two bytes, and the milestones are followed by a byte which makes the length of the structure even. The length of such structures is 0x0A + 2 × Milestone Count, e.g. 0x10 for three milestones, where the packed layout has 0x0E.

Both layouts are told by the version and the parameter, 1 and 0x0099, which every known structure holds, so that the structures vendors give type 222 are not taken for the milestones on the systems whose firmware names no vendor, e.g. the ones of Dell on PowerEdge servers.

Table 3. Intel Silicon View Technology Milestones structure, aligned layout
Offset	Name	Length	Value	Description
`0x04`	Version	`BYTE`	Varies	`1` in all known data
`0x05`	Padding	`BYTE`	`0`	Aligns the parameter to two bytes
`0x06`	Parameter	`WORD`	Varies	Meaning not established, `0x0099` in all known data
`0x08`	Milestone Count	`BYTE`	Varies	Number of milestones
`0x09`	Milestones	Varies	Varies	Milestones, see Milestones
`0x09` + 2 × Milestone Count	Padding	`BYTE`	`0`	Makes the length of the structure even