PMC vs. PSM?

This post discusses the AMD Versal PMC vs. PSM. At a high level, the PMC (Platform Management Controller) controls boot, and the PSM (Platform System Controller) controls power. A processor in the PMC, the PMC PPU, loads the PSM and "releases it" to run. This post goes into more detail about each.

This post uses the non-secure boot process to explain more about the PMC and PSM using information from the Versal Adaptive SoC Technical Reference Manual (AM011) at https://docs.amd.com/r/en-US/am011-versal-acap-trm and the Versal Adaptive SoC System Software Developers Guide (UG1304) at https://docs.amd.com/r/en-US/ug1304-versal-acap-ssdg.

Knowing that the PMC is the first thing that can run your code is helpful when creating a Versal "Hello, World!" project with Vitis.

Index

• Platform Management Controller (PMC)

  • Legacy

  • PMC Blocks

  • PMC Power Down

  • Platform Management Controller Block Diagram

  • PMC Boot

  • The PMC Interconnect

  • PMC Boot Steps

• Processing System Manager (PSM)

  • PSM Power Domain

  • PSM System Functions

• PMC vs. PSM?

Platform Management Controller (PMC)

Legacy

The PMC replaces the MPSoC's CSU and PMU.

PMC Blocks

The PMC contains:

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