From eab4b918b96bd2ebd1adb3108c049edc65b76ac5 Mon Sep 17 00:00:00 2001
From: "colin.liang" <colin.liang@enflame-tech.com>
Date: Fri, 13 Jan 2023 14:57:13 +0800
Subject: [PATCH] Refine testbench.v.

---
 testbench_wb.v | 87 +-------------------------------------------------
 1 file changed, 1 insertion(+), 86 deletions(-)

diff --git a/testbench_wb.v b/testbench_wb.v
index 27b18ce..5c350cc 100644
--- a/testbench_wb.v
+++ b/testbench_wb.v
@@ -1,59 +1,5 @@
 `timescale 1 ns / 1 ps
 
-`ifndef VERILATOR
-module testbench #(
-    parameter VERBOSE = 0
-);
-  reg  clk = 1;
-  reg  resetn = 1;
-  wire trap;
-
-  always #5 clk = ~clk;
-
-  initial begin
-    repeat (100) @(posedge clk);
-    resetn <= 0;
-  end
-
-  initial begin
-    if ($test$plusargs("vcd")) begin
-      $dumpfile("testbench.vcd");
-      $dumpvars(0, testbench);
-    end
-    repeat (1000000) @(posedge clk);
-    $display("TIMEOUT");
-    $finish;
-  end
-
-  wire trace_valid;
-  wire [35:0] trace_data;
-  integer trace_file;
-
-  initial begin
-    if ($test$plusargs("trace")) begin
-      trace_file = $fopen("testbench.trace", "w");
-      repeat (10) @(posedge clk);
-      while (!trap) begin
-        @(posedge clk);
-        if (trace_valid) $fwrite(trace_file, "%x\n", trace_data);
-      end
-      $fclose(trace_file);
-      $display("Finished writing testbench.trace.");
-    end
-  end
-
-  picorv32_wrapper #(
-      .VERBOSE(VERBOSE)
-  ) top (
-      .wb_clk(clk),
-      .wb_rst(resetn),
-      .trap(trap),
-      .trace_valid(trace_valid),
-      .trace_data(trace_data)
-  );
-endmodule
-`endif
-
 module picorv32_wrapper #(
     parameter VERBOSE = 0
 ) (
@@ -95,7 +41,7 @@ module picorv32_wrapper #(
       .mem_instr(mem_instr),
 
       .wb_clk_i(wb_clk),
-      .wb_rst_i(wb_rst),
+      .wb_rst_i(wb_rst)
   );
 
   initial begin
@@ -107,9 +53,6 @@ module picorv32_wrapper #(
   always @(posedge wb_clk) begin
     cycle_counter <= !wb_rst ? cycle_counter + 1 : 0;
     if (!wb_rst && trap) begin
-`ifndef VERILATOR
-      repeat (10) @(posedge wb_clk);
-`endif
       $display("TRAP after %1d clock cycles", cycle_counter);
       if (exit) begin
         $display("ALL TESTS PASSED.");
@@ -123,12 +66,6 @@ module picorv32_wrapper #(
   end
 endmodule
 
-
-
-/***************************************************************
- * picorv32_wb
- ***************************************************************/
-
 module picorv32_wb #(
 ) (
     output trap,
@@ -138,25 +75,6 @@ module picorv32_wb #(
     input wb_rst_i,
     input wb_clk_i,
 
-    output reg [31:0] wbm_adr_o,
-    output reg [31:0] wbm_dat_o,
-    input [31:0] wbm_dat_i,
-    output reg wbm_we_o,
-    output reg [3:0] wbm_sel_o,
-    output reg wbm_stb_o,
-    input wbm_ack_i,
-    output reg wbm_cyc_o,
-
-    // Pico Co-Processor Interface (PCPI)
-    output        pcpi_valid,
-    output [31:0] pcpi_insn,
-    output [31:0] pcpi_rs1,
-    output [31:0] pcpi_rs2,
-    input         pcpi_wr,
-    input  [31:0] pcpi_rd,
-    input         pcpi_wait,
-    input         pcpi_ready,
-
     // IRQ interface
     input  [31:0] irq,
     output [31:0] eoi,
@@ -200,7 +118,6 @@ module picorv32_wb #(
       .resetn(resetn),
       .trap  (trap),
 
-
       .mem_valid   (mem_valid),
       .mem_instr   (mem_instr),
       .mem_ready   (mem_ready),
@@ -233,10 +150,8 @@ module picorv32_wb #(
     if (mem_la_write) begin
       case (mem_la_addr)
         32'h1000_0000: begin
-`ifndef TIMING
           $write("%c", mem_la_wdata);
           $fflush();
-`endif
         end
         32'h2000_0000: begin
           if (mem_la_wdata[31:0] == 123456789) exit = 1;