Moved serv to own tree

rtl/serv/serving.v

@@ -0,0 +1,147 @@
+/* serving.v : Top-level 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
+  (
+   input wire 	      i_clk,
+   input wire 	      i_rst,
+   input wire 	      i_timer_irq,
+
+   output wire [31:0] o_wb_adr,
+   output wire [31:0] o_wb_dat,
+   output wire [3:0]  o_wb_sel,
+   output wire 	      o_wb_we ,
+   output wire 	      o_wb_stb,
+   input wire [31:0]  i_wb_rdt,
+   input wire 	      i_wb_ack);
+
+   parameter memfile = "";
+   parameter memsize = 8192;
+   parameter sim = 1'b0;
+   parameter RESET_STRATEGY = "NONE";
+   parameter WITH_CSR = 1;
+   localparam regs = 32+WITH_CSR*4;
+
+   localparam rf_width = 8;
+
+   wire [31:0] 	wb_mem_adr;
+   wire [31:0] 	wb_mem_dat;
+   wire [3:0] 	wb_mem_sel;
+   wire 	wb_mem_we;
+   wire 	wb_mem_stb;
+   wire [31:0] 	wb_mem_rdt;
+   wire 	wb_mem_ack;
+
+   wire [6+WITH_CSR:0] rf_waddr;
+   wire [rf_width-1:0] rf_wdata;
+   wire 	       rf_wen;
+   wire [6+WITH_CSR:0] rf_raddr;
+   wire [rf_width-1:0] rf_rdata;
+   wire		       rf_ren;
+
+   wire [$clog2(memsize)-1:0] sram_waddr;
+   wire [rf_width-1:0] sram_wdata;
+   wire 	       sram_wen;
+   wire [$clog2(memsize)-1:0] sram_raddr;
+   wire [rf_width-1:0] sram_rdata;
+   wire		       sram_ren;
+
+   serving_ram
+     #(.memfile (memfile),
+       .depth   (memsize))
+   ram
+     (// Wishbone interface
+      .i_clk (i_clk),
+      .i_waddr  (sram_waddr),
+      .i_wdata  (sram_wdata),
+      .i_wen    (sram_wen),
+      .i_raddr  (sram_raddr),
+      .o_rdata  (sram_rdata)/*,
+      .i_ren    (rf_ren)*/);
+
+   servile_rf_mem_if
+     #(.depth   (memsize),
+       .rf_regs (regs))
+   rf_mem_if
+     (// Wishbone interface
+      .i_clk (i_clk),
+      .i_rst (i_rst),
+
+      .i_waddr  (rf_waddr),
+      .i_wdata  (rf_wdata),
+      .i_wen    (rf_wen),
+      .i_raddr  (rf_raddr),
+      .o_rdata  (rf_rdata),
+      .i_ren    (rf_ren),
+
+      .o_sram_waddr (sram_waddr),
+      .o_sram_wdata (sram_wdata),
+      .o_sram_wen   (sram_wen),
+      .o_sram_raddr (sram_raddr),
+      .i_sram_rdata (sram_rdata),
+      .o_sram_ren   (sram_ren),
+
+      .i_wb_adr (wb_mem_adr[$clog2(memsize)-1:2]),
+      .i_wb_stb (wb_mem_stb),
+      .i_wb_we  (wb_mem_we) ,
+      .i_wb_sel (wb_mem_sel),
+      .i_wb_dat (wb_mem_dat),
+      .o_wb_rdt (wb_mem_rdt),
+      .o_wb_ack (wb_mem_ack));
+
+   servile
+     #(.reset_pc (32'h0000_0000),
+       .reset_strategy (RESET_STRATEGY),
+       .rf_width (rf_width),
+       .sim (sim),
+       .with_csr (WITH_CSR))
+   servile
+     (
+      .i_clk       (i_clk),
+      .i_rst       (i_rst),
+      .i_timer_irq (i_timer_irq),
+      //Memory interface
+      .o_wb_mem_adr   (wb_mem_adr),
+      .o_wb_mem_dat   (wb_mem_dat),
+      .o_wb_mem_sel   (wb_mem_sel),
+      .o_wb_mem_we    (wb_mem_we),
+      .o_wb_mem_stb   (wb_mem_stb),
+      .i_wb_mem_rdt   (wb_mem_rdt),
+      .i_wb_mem_ack   (wb_mem_ack),
+
+      //Extension interface
+      .o_wb_ext_adr   (o_wb_adr),
+      .o_wb_ext_dat   (o_wb_dat),
+      .o_wb_ext_sel   (o_wb_sel),
+      .o_wb_ext_we    (o_wb_we),
+      .o_wb_ext_stb   (o_wb_stb),
+      .i_wb_ext_rdt   (i_wb_rdt),
+      .i_wb_ext_ack   (i_wb_ack),
+
+      //RF IF
+      .o_rf_waddr  (rf_waddr),
+      .o_rf_wdata  (rf_wdata),
+      .o_rf_wen    (rf_wen),
+      .o_rf_raddr  (rf_raddr),
+      .o_rf_ren    (rf_ren),
+      .i_rf_rdata  (rf_rdata));
+
+
+endmodule