Working SERV cpu

sim/overrides/serving_ram.v

@@ -1,51 +0,0 @@
-/* serving_ram.v : I/D SRAM for the serving SoC
- *
- * ISC License
- *
- * Copyright (C) 2020 Olof Kindgren <olof.kindgren@gmail.com>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-`default_nettype none
-module serving_ram
-  #(//Memory parameters
-    parameter depth = 256,
-    parameter aw    = $clog2(depth),
-    parameter memfile = "")
-   (input wire		i_clk,
-    input wire [aw-1:0]	i_waddr,
-    input wire [7:0]	i_wdata,
-    input wire		i_wen,
-    input wire [aw-1:0]	i_raddr,
-    output reg [7:0]	o_rdata);
-
-   reg [7:0]		mem [0:depth-1] /* verilator public */;
-
-   always @(posedge i_clk) begin
-      if (i_wen) mem[i_waddr]   <= i_wdata;
-      o_rdata <= mem[i_raddr];
-   end
-   
-   integer i;
-initial begin
-  // Fill unused/uninitialized memory with a predefined value
-  for (i = 0; i < depth; i = i + 1)
-    mem[i] = 8'h00;   // <- pick your fill value (00, FF, etc.)
-
-  if (|memfile) begin
-    $display("Preloading %m from %s", memfile);
-    $readmemh(memfile, mem);
-  end
-end
-endmodule

sim/tb/tb_serving.v

@@ -33,7 +33,7 @@ module tb_serving();
     serving #(
         .memfile("../sw/blinky/blinky.hex"),
         .memsize(8192),
-        .sim(1'b0),
+        .sim(1'b1),
         .RESET_STRATEGY("MINI"),
         .WITH_CSR(1)
     ) serv (
@@ -50,7 +50,7 @@ module tb_serving();
     );
 
     wb_gpio #(
-      .address(32'h80000000)
+      .address(32'h40000000)
     ) gpio (
         .i_wb_clk(clk),
         .i_wb_dat(wb_dat),