Zynq UltraScale+ MPSoC Image Header - 2021.2 English

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

Document ID
UG1400
ft:locale
English (United States)
Release Date
2021-12-15
Version
2021.2 English

About Image Headers

The Image Header is an array of structures containing information related to each image, such as an ELF file, bitstream, data files, and so forth. Each image can have multiple partitions, for example an ELF can have multiple loadable sections, each of which form a partition in the boot image. The table will also contain the information of number of partitions related to an image. The following table provides the address offsets, parameters, and descriptions for the Zynq® UltraScale+™ MPSoC.

Table 1. Zynq UltraScale+ MPSoC Device Image Header
Address Offset Parameter Description
0x00 Next image header offset Link to next Image Header. 0 if last Image Header. (word offset)
0x04 Corresponding partition header Link to first associated Partition Header. (word offset)
0x08 Reserved Always 0.
0x0C Partition Count Value of the actual partition count.
0x10 - N Image Name Packed in big endian order. To reconstruct the string, unpack 4 bytes at a time, reverse the order, and concatenated. For example, the string “FSBL10.ELF” is packed as 0x10: ‘L’,’B’,’S’,’F’, 0x14: ’E’,’.’,’0’,’1’, 0x18: ’\0’,’\0’,’F’,’L’ The packed image name is a multiple of 4 bytes.
varies String Terminator 0x00000
varies Padding Defaults to 0xFFFFFFF to 64 bytes boundary.