By default, all full and partial PL programming images are compressed. Versal devices use a new compression algorithm that is a different approach than the prior architectures. Versal device programmable device image (PDI) compression reduces the configuration time in most cases.
Reduced configuration time and decreased configuration storage size requirements are observed when compression is used for the following interfaces for QSPI, OSPI, SD, eMMC, JTAG, and SelectMAP:
- Less than 2.56 GB/s (in the slowest speed grade)
- 3.2 GB/s (in medium and fast speed grades)
For this reason, compression is enabled by default.
.pdiformat) is compressed and if the interface exceeds 2.56 GB/s (slow speed grades) or 3.2 GB/s (medium and fast speed grades).
- Use uncompressed image
- For high-speed interfaces that require the shortest programming time when images are delivered from DDR memory or through PCIe.
- Use compression
- For high-speed interfaces if the primary goal is minimizing storage space.
set_property BITSTREAM.GENERAL.COMPRESS FALSE [current_design]