Split with "Offset" Attribute - 2023.2 English

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

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2023.2 English

This example helps to understand how split works with offset attribute.

  [bootloader, destination_cpu = a53-0] fsbl.elf   
  [destination_cpu = pmu, offset=0x3000000] pmufw.elf    
  [destination_device = pl, offset=0x4000000] design_1_wrapper.bit
  [destination_cpu = a53-0, exception_level = el-3, trustzone, offset=0x6000000]\ hello.elf 

When offset is specified to a partition, then the address of that partition in the boot image starts from the given offset. To cover any gap between the mentioned offset of the current partition and the previous partition, bootgen appends 0xFFs to the previous partition. So, now when split is tried on the same, the boot image is expected to be split based on the address of that partition, which is the mentioned offset in this case. So, you see the padded 0xFFs in the split partition outputs.