Zynq UltraScale+ MPSoC Boot Header Attribute Bits - 2023.1 English

Bootgen User Guide (UG1283)
Document ID
UG1283
Release Date
2023-07-26
Version
2023.1 English
Table 1. Zynq UltraScale+ MPSoC Boot Header Attribute Bits
Field Name Bit Offset Width Default Description
Reserved 31:16 16 0x0 Reserved. Must be 0.
BHDR RSA 15:14 2 0x0
  • 0x3: RSA Authentication of the boot image will be done, excluding verification of PPK hash and SPK ID.
  • All Others others : RSA Authentication will be decided based on eFuse RSA bits.
Reserved 13:12 2 0x0 NA
CPU Select 11:10 2 0x0
  • 0x0: R5 Single
  • 0x1: A53 Single 32-bit
  • 0x2: A53 Single 64-bit
  • 0x3: R5 Dual
Hashing Select 9:8 2 0x0
  • 0x0, 0x1 : No Integrity check
  • 0x3: SHA3 for BI integrity check
PUF-HD 7:6 2 0x0
  • 0x3: PUF HD is part of boot header.
  • All other: PUF HD is in eFuse
Reserved 5:0 6 0x0 Reserved for future use. Must be 0.