[1.9.0] - 2020-03-14

A more detailed account of everything included is included in the dev to master PR for this release: #486

Added

• TracerV + Flame Graph support from FirePerf ASPLOS 2020 paper (PR #496)
  • Docs: https://docs.fires.im/en/latest/Advanced-Usage/Debugging-and-Profiling-on-FPGA/TracerV-with-FlameGraph.html
• Pre-packaged AGFI for Gemmini NN accelerator

Changed

• Significant overhaul / expansion of Debugging and Profiling on FPGA docs (PR #496)
  • Link: https://docs.fires.im/en/latest/Advanced-Usage/Debugging-and-Profiling-on-FPGA/index.html
• Unification of FireSimDUT with chipyard.Top, all default firesim configs are now extensions of default Chipyard configs (PR #491)
  • Unification of Configs/Tops between Chipyard and FireSim. Arbitrary Chipyard designs can be imported into FireSim
  • Users can define a FireSim version of a Chipyard config by building a TARGET_CONFIG that specifies WithFireSimDefaultBridges, WithFireSimDefaultMemModel, and WithFireSimConfigTweaks
  • FireSimHarness moved to FireChip. Harness now uses Chipyard's BuildTop key to control which Top to build
  • AGFI naming scheme changed. firesim -> firesim-rocket, fireboom -> firesim-boom
• BridgeBinders system is now generalized as IOBinders for attaching Bridges to the target (PR #491)
• Parallelized verilator Midas-level (ML) simulation compilation (PR #475)
• Default fesvr-step size in ML simulation (PR #474)
  • Passing no plusArg will have the same behavior as on the FPGA
• Disable zero-out-dram by default; expose in config_runtime.ini (PR #506)
• Update docs to note previously added suffixtag feature (PR #510)

Fixed

• Fixed synthesizing printfs at the top-level (PR #485)
• Fixed FPGA-level simulation to properly generate GG-side PLL (PR #487)
• Fixed a non-determinism bug due to unreset target-state (PR #499)
• Fixed bug in ML-simulation of verilog black boxes in verilator (PR #499)
• Fixed bug in manager that prevented use of f1.4xlarges with no_net_configs (PR #502)
• Allow simulations without block devices (#519)

Deprecated

• FireSimNoNIC design option removed, all examples now use FireSim design option
  • Designs can specify inclusion/exclusion of NIC by setting icenet.NICKey, i.e. in TARGET_CONFIG rather than using a different design

Removed

• Many excess configs in the sample_config inis were removed