Versal AI Edge Gen 2 and Versal Prime Gen 2 Boot Header Attributes - 2025.1 English - UG1283

Bootgen User Guide (UG1283)
Document ID
UG1283
Release Date
2025-09-10
Version
2025.1 English

Image attributes field comprises packed information of the boot image attributes and details are available in the following table:

Table 1. Versal AI Edge Series Gen 2 and Versal Prime Series Gen 2 Boot Header Attributes
Field Name Bit Offset Width Default Value Description
Rsvd [31:22] 10 0x0 Reserved, must be 0
CDI generation [21:20] 2 0x0

0x3 – Generate DICE CDI

All others – DICE CDI generation is based on eFuse UDS programmed
Signed image [19:18] 2 0x0

0x3- Signed image

All others – Unsigned image
Puf Mode [17:16] 2 0x0

0x3 - PUF 4K mode.

0x0 - PUF 12K mode.
BH Authentication [15:14] 2 0x0 0x3 - Authenticates the boot image, excluding verification of PPK hash and SPK ID. All others: Authentication is decided based on eFUSE RSA/ECDSA bits.
Rsvd [13:12] 2 0x0 Reserved, must be 0
DPA CM [11:10] 2 0x0

0x3 - Enabled

All others disabled. (eFUSE overrides this)
BI Integrity selection. [9:8] 2 0x0

0x0, 0x1, 0x2 - Reserved

0x3 - SHA3: used as hash function to perform BI integrity check.
PUF HD [7:6] 2 0x0

0x3 - PUF HD is part of boot header

All other - PUF HD is in eFUSE.
Rsvd [5:4] 2 0x0 Reserved
Rsvd [3:0] 4 0x0 Reserved