Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

10.5.1.4. L2 Cache Lockdown Capabilities

The L2 cache has three methods to lock data in the cache RAMs:

  • Lockdown by line—Used to lock lines in the cache. This is commonly used for loading critical sections of software into the cache temporarily.
  • Lockdown by way—Allows any or all of the eight cache ways to be locked. This is commonly used for loading critical data or code into the cache.
  • Lockdown by master—Allows cache ways to be dedicated to a single master port. This allows a large cache to look like smaller caches to multiple master ports. The L2 cache can be mastered by CPU0, CPU1, or the six ACP masters, for a total of eight possible master ports.