Zynq UltraScale+ MPSoC PUF Helper Data - 2023.2 English

Vitis Unified Software Platform Documentation: Embedded Software Development (UG1400)

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2023.2 English
The PUF uses helper data to re-create the original KEK value over the complete guaranteed operating temperature and voltage range over the life of the part. The helper data consists of a <syndrome_value>, an <aux_value>, and a <chash_value>. The helper data can either be stored in eFUSEs or in the boot image. See puf_file for more information. Also, see the section "PUF Helper Data" in the Zynq UltraScale+ Device Technical Reference Manual (UG1085).
Table 1. Zynq UltraScale+ MPSoC PUF Helper Data
Address Offset Parameter Description
0x8B8 to 0xEC0 PUF Helper Data (1544 bytes) Valid only when Boot Header Offset 0x44 (bits 7:6) == 0x3. If the PUF HD is not inserted then Boot Header size = 2048 bytes. If the PUF Header Data is inserted, then the Boot Header size = 3584 bytes. PUF HD size = Total size = 1536 bytes of PUFHD + 4 bytes of CHASH + 2 bytes of AUX + 1 byte alignment = 1544 byte.