PL Configuration - 2021.2 English

Versal ACAP System Software Developers Guide (UG1304)
Document ID
UG1304
Release Date
2021-10-27
Version
2021.2 English

In Versal ACAP, the Adaptable Engine integrated into the PL is configured using CDO files such as rCDO and rNPI. PL CDO mainly contains CFrame data along with PL and NoC power domain initialization commands. NPI contains configuration data related to the NPI blocks. NPI blocks include NoC elements (NMU, NSU, NPS, NCRB), DDR memory controller, XPHY, XPIO, GTY, MMCMs, etc.).

The NPI data is generated by the Vivado tool for the various NPI blocks. The NPI blocks that are present in Versal ACAP include NoC, DDR memory controller, XPHY, XPIO, GTY, MMCMs, etc. Before loading the PL configuration, ensure that PMC is configured.

The following table describes the content of the files, and is useful for debugging

Table 1. PL Configuration
File Contents
PL CDO <.rcdo>
  • PM init node command (Scan Clear, BISR, MBIST)  for NoC domain
  • The PM init node commands for scan clear, house cleaning, BISR of PL domain
  • Register writes to configure CFU for CRC, compression etc
  • DMA Keyhole Xfer commands to load CFI data
  • Register writes/polls to CFU
  • If NPI not present:
    • Global Signals (GMC_B, GRESTORE, GHIGH_B..): Register writes/polls
  • Global Signals (GWE, EOS, EN_GLOb): Register writes/polls
NPI CDO <.rnpi> NPI data
  • NPI data load: DMA Writes/register writes
  • If CFI present:
    • Global Signals (GMC_B, GRESTORE, GHIGH_B..:) Register writes/polls
  • NPI Sequence: Register writes/polls
  • If CFI present:
    • Global Signals (GWE, EOS, EN_GLOb): Register writes/polls
  • Isolation and PL reset commands