Start jtag server only if enabled via plus args

Internal-tag: [#60812]
Signed-off-by: Ryszard Rozak <[email protected]>

.github/scripts/openocd_test.sh

@@ -42,7 +42,7 @@ echo -e "${COLOR_WHITE}======== Launching interactive simulation ========${COLOR
 
 # Start the simulation
 echo -e "Starting simulation..."
-obj_dir/Vtb_top >"${SIM_LOG}" 2>&1 &
+obj_dir/Vtb_top +ENABLE_JTAG=1 >"${SIM_LOG}" 2>&1 &
 SIM_PID=$!
 
 # Wait

testbench/jtagdpi/jtagdpi.sv

@@ -30,19 +30,29 @@ module jtagdpi #(
   function void jtagdpi_close(input chandle ctx);
 
   chandle ctx;
+  bit jtag_enabled;
 
   initial begin
-    ctx = jtagdpi_create(Name, ListenPort);
+     if (!$value$plusargs("ENABLE_JTAG=%d", jtag_enabled)) jtag_enabled = 0;
+     $display(jtag_enabled);
+
+     if (jtag_enabled) begin
+        ctx = jtagdpi_create(Name, ListenPort);
+     end
   end
 
   final begin
-    jtagdpi_close(ctx);
-    ctx = null;
+     if (jtag_enabled) begin
+        jtagdpi_close(ctx);
+        ctx = null;
+     end
   end
 
   always_ff @(posedge clk_i, negedge rst_ni) begin
-    jtagdpi_tick(ctx, jtag_tck, jtag_tms, jtag_tdi, jtag_trst_n, jtag_srst_n,
-                 jtag_tdo);
+     if (jtag_enabled) begin
+        jtagdpi_tick(ctx, jtag_tck, jtag_tms, jtag_tdi, jtag_trst_n, jtag_srst_n,
+                     jtag_tdo);
+     end
   end
 
 endmodule