Files
Toooba/src_SSITH_P3
rsnikhil ac6043ce2d Fixed two bugs: (1) not trapping on unimplemented CSRs (2) MSTATUS.FS initialization
(1) riscy-ooo was mapping all unimplemented CSRs to a benign, user-privilege read-write CSR
    Instead, we now catch this RenameStage and steer it to a trap.
(2) MSTATUS.FS was initialized to 2'b00 (absent/off); should be 2'b01 (present and initial)
2020-03-03 13:56:31 -05:00
..

Copyright (c) 2019 Bluespec, Inc.  All Rights Reserved.

This directory is intended for DARPA SSITH users; others may safely ignore it.

This directory contains a wrapper and other resources that package up
MIT's RISCY-OOO to fit into the "standard" core socket in the SSITH GFE
("Government Furnished Equipment").

>================================================================
Context:

The SSITH system is an SoC with a "socket" (placeholder) for a "Core"
module (a RISC-V CPU).  Various implementations are/will be plugged
into this socket:

 - "P1"
    - Baseline Piccolo (BSV) based core
    - Baseline Rocket (Chisel) based core
    - Variations/alternatives by various SSITH project teams

 - "P2"
    - Baseline Flute (BSV) based core
    - Baseline Rocket (Chisel) based core
    - Variations/alternatives by various SSITH project teams

 - "P3"
    - Baseline Tooba (BSV) based core
    - Baseline BOOM (Chisel) based core
    - Variations/alternatives by various SSITH project teams

>================================================================
Whenever there are changes to the Toooba core, rerun:

  $ make compile
      (which generates RTL and then $ cp Verilog_RTL/* xilinx_ip/hdl/)

The synthesis version (Verilog_RTL) uses Xilinx IP for the integer divider,
while the simulation version (Verilog_RTL_sim) uses a model.

>================================================================