RVFI - Setting mstatus_fs write mask when fcsr update + Adding DBG_FL…

…USH to write back trigger
openhwgroup · Nov 30, 2023 · c02d5c6 · c02d5c6
1 parent b09e8a4
commit c02d5c6
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/bhv/cv32e40p_rvfi.sv b/bhv/cv32e40p_rvfi.sv
@@ -1430,7 +1430,7 @@ insn_trace_t trace_if, trace_id, trace_ex, trace_ex_next, trace_wb;
 
       s_new_valid_insn = r_pipe_freeze_trace.id_valid && r_pipe_freeze_trace.is_decoding;// && !r_pipe_freeze_trace.apu_rvalid;
 
-      s_wb_valid_adjusted = r_pipe_freeze_trace.wb_valid && (s_core_is_decoding || (r_pipe_freeze_trace.ctrl_fsm_cs == FLUSH_EX) || (r_pipe_freeze_trace.ctrl_fsm_cs == DBG_FLUSH) || (r_pipe_freeze_trace.ctrl_fsm_cs == DBG_TAKEN_ID) || (r_pipe_freeze_trace.ctrl_fsm_cs == DBG_TAKEN_IF));// && !r_pipe_freeze_trace.apu_rvalid;;
+      s_wb_valid_adjusted = r_pipe_freeze_trace.wb_valid && (s_core_is_decoding || (r_pipe_freeze_trace.ctrl_fsm_cs == FLUSH_EX) || (r_pipe_freeze_trace.ctrl_fsm_cs == FLUSH_WB) || (r_pipe_freeze_trace.ctrl_fsm_cs == DBG_FLUSH) || (r_pipe_freeze_trace.ctrl_fsm_cs == DBG_TAKEN_ID) || (r_pipe_freeze_trace.ctrl_fsm_cs == DBG_TAKEN_IF));// && !r_pipe_freeze_trace.apu_rvalid;;
       s_ex_reg_we_adjusted = r_pipe_freeze_trace.ex_reg_we && r_pipe_freeze_trace.mult_ready && r_pipe_freeze_trace.alu_ready && r_pipe_freeze_trace.lsu_ready_ex && !s_apu_to_alu_port;
       s_rf_we_wb_adjusted = r_pipe_freeze_trace.rf_we_wb && (~r_pipe_freeze_trace.data_misaligned_ex && r_pipe_freeze_trace.wb_ready) && (!s_apu_to_lsu_port || r_pipe_freeze_trace.wb_contention_lsu);
 

diff --git a/bhv/pipe_freeze_trace.sv b/bhv/pipe_freeze_trace.sv
@@ -367,7 +367,10 @@ function compute_csr_we();
         r_pipe_freeze_trace.csr.mstatus_fs_we = 1'b1;
       end
       CSR_FRM:       r_pipe_freeze_trace.csr.frm_we = 1'b1;
-      CSR_FCSR:      r_pipe_freeze_trace.csr.fcsr_we = 1'b1;
+      CSR_FCSR: begin
+        r_pipe_freeze_trace.csr.fcsr_we = 1'b1;
+        r_pipe_freeze_trace.csr.mstatus_fs_we = 1'b1;
+      end
       CSR_DPC:       r_pipe_freeze_trace.csr.dpc_we = 1'b1;
       CSR_DSCRATCH0: r_pipe_freeze_trace.csr.dscratch0_we = 1'b1;
       CSR_DSCRATCH1: r_pipe_freeze_trace.csr.dscratch1_we = 1'b1;