Regfile: Rename signals for correct pipe stages.
[firearm.git] / system.v
index da9d701..433687f 100644 (file)
--- a/system.v
+++ b/system.v
@@ -1,7 +1,15 @@
-`define BUS_ICACHE 0
-`define BUS_DCACHE 1
+`define BUS_ICACHE 1
+`define BUS_DCACHE 0
 
-module System(input clk);
+module System(input clk, input rst
+`ifdef verilator
+`else
+       , output wire [8:0] sys_odata,
+       input [8:0] sys_idata,
+       output wire sys_tookdata
+`endif
+       );
+       
        wire [7:0] bus_req;
        wire [7:0] bus_ack;
        wire [31:0] bus_addr;
@@ -12,7 +20,7 @@ module System(input clk);
 
        wire bus_req_icache;
        wire bus_req_dcache;
-       assign bus_req = {6'b0, bus_req_dcache, bus_req_icache};
+       assign bus_req = {6'b0, bus_req_icache, bus_req_dcache};
        wire bus_ack_icache = bus_ack[`BUS_ICACHE];
        wire bus_ack_dcache = bus_ack[`BUS_DCACHE];
        
@@ -46,42 +54,116 @@ module System(input clk);
        wire dcache_rw_wait;
        wire [31:0] dcache_wr_data, dcache_rd_data;
        
-       wire stall_cause_issue;
-       wire stall_cause_execute;
-       
-       wire [31:0] decode_out_op0, decode_out_op1, decode_out_op2, decode_out_spsr;
+       wire [31:0] decode_out_op0, decode_out_op1, decode_out_op2, decode_out_spsr, decode_out_cpsr;
        wire decode_out_carry;
-       wire [3:0] regfile_read_0, regfile_read_1, regfile_read_2;
-       wire [31:0] regfile_rdata_0, regfile_rdata_1, regfile_rdata_2, regfile_spsr;
+       
+       wire [3:0] regfile_read_0, regfile_read_1, regfile_read_2, regfile_read_3;
+       wire [31:0] regfile_rdata_0, regfile_rdata_1, regfile_rdata_2, regfile_rdata_3, regfile_spsr;
+       wire regfile_write;
+       wire [3:0] regfile_write_reg;
+       wire [31:0] regfile_write_data;
+       
        wire execute_out_write_reg;
        wire [3:0] execute_out_write_num;
        wire [31:0] execute_out_write_data;
-       wire [31:0] jmppc;
-       wire jmp;
+       wire [31:0] execute_out_op0, execute_out_op1, execute_out_op2;
+       wire [31:0] execute_out_cpsr, execute_out_spsr;
+       wire execute_out_cpsrup;
+       
+       wire jmp_out_execute, jmp_out_writeback;
+       wire [31:0] jmppc_out_execute, jmppc_out_writeback;
+       wire jmp = jmp_out_execute | jmp_out_writeback;
+       wire [31:0] jmppc = jmppc_out_execute | jmppc_out_writeback;
        
+       wire memory_out_write_reg;
+       wire [3:0] memory_out_write_num;
+       wire [31:0] memory_out_write_data;
+       wire [31:0] memory_out_cpsr, memory_out_spsr;
+       wire memory_out_cpsrup;
+       
+       wire [31:0] writeback_out_cpsr, writeback_out_spsr;
+
+       wire cp_ack_terminal;
+       wire cp_busy_terminal;
+       wire [31:0] cp_read_terminal;
+       
+       wire cp_req;
+       wire [31:0] cp_insn;
+       wire cp_ack = cp_ack_terminal;
+       wire cp_busy = cp_busy_terminal;
+       wire cp_rnw;
+       wire [31:0] cp_read = cp_read_terminal;
+       wire [31:0] cp_write;
+       
+       wire stall_cause_issue;
+       wire stall_cause_execute;
+       wire stall_cause_memory;
        wire bubble_out_fetch;
        wire bubble_out_issue;
        wire bubble_out_execute;
+       wire bubble_out_memory;
        wire [31:0] insn_out_fetch;
        wire [31:0] insn_out_issue;
        wire [31:0] insn_out_execute;
+       wire [31:0] insn_out_memory;
        wire [31:0] pc_out_fetch;
        wire [31:0] pc_out_issue;
        wire [31:0] pc_out_execute;
+       wire [31:0] pc_out_memory;
+       
+       wire Nrst = ~rst;
+       
+       /*AUTOWIRE*/
+       // Beginning of automatic wires (for undeclared instantiated-module outputs)
+       wire            bubble_1a;              // From fetch of Fetch.v
+       wire [31:0]     ic__rd_addr_0a;         // From fetch of Fetch.v
+       wire [31:0]     ic__rd_data_1a;         // From icache of ICache.v
+       wire            ic__rd_req_0a;          // From fetch of Fetch.v
+       wire            ic__rd_wait_0a;         // From icache of ICache.v
+       wire [31:0]     insn_1a;                // From fetch of Fetch.v
+       wire [31:0]     pc_1a;                  // From fetch of Fetch.v
+       wire [31:0]     rf__rdata_0_1a;         // From regfile of RegFile.v
+       wire [31:0]     rf__rdata_1_1a;         // From regfile of RegFile.v
+       wire [31:0]     rf__rdata_2_1a;         // From regfile of RegFile.v
+       wire [31:0]     rf__rdata_3_4a;         // From regfile of RegFile.v
+       wire [3:0]      rf__read_0_1a;          // From decode of Decode.v
+       wire [3:0]      rf__read_1_1a;          // From decode of Decode.v
+       wire [3:0]      rf__read_2_1a;          // From decode of Decode.v
+       // End of automatics
 
        wire execute_out_backflush;
+       wire writeback_out_backflush;
 
        BusArbiter busarbiter(.bus_req(bus_req), .bus_ack(bus_ack));
 
-       ICache icache(
+       /* XXX reset? */
+       /* ICache AUTO_TEMPLATE (
                .clk(clk),
-               /* XXX reset? */
-               .rd_addr(icache_rd_addr), .rd_req(icache_rd_req),
-               .rd_wait(icache_rd_wait), .rd_data(icache_rd_data),
-               .bus_req(bus_req_icache), .bus_ack(bus_ack_icache),
-               .bus_addr(bus_addr_icache), .bus_rdata(bus_rdata),
-               .bus_wdata(bus_wdata_icache), .bus_rd(bus_rd_icache),
-               .bus_wr(bus_wr_icache), .bus_ready(bus_ready));
+               .bus_req(bus_req_icache),
+               .bus_ack(bus_ack_icache),
+               .bus_addr(bus_addr_icache),
+               .bus_rdata(bus_rdata),
+               .bus_wdata(bus_wdata_icache),
+               .bus_rd(bus_rd_icache),
+               .bus_wr(bus_wr_icache),
+               .bus_ready(bus_ready),
+               ); */
+       ICache icache(/*AUTOINST*/
+                     // Outputs
+                     .ic__rd_wait_0a   (ic__rd_wait_0a),
+                     .ic__rd_data_1a   (ic__rd_data_1a[31:0]),
+                     .bus_req          (bus_req_icache),        // Templated
+                     .bus_addr         (bus_addr_icache),       // Templated
+                     .bus_wdata        (bus_wdata_icache),      // Templated
+                     .bus_rd           (bus_rd_icache),         // Templated
+                     .bus_wr           (bus_wr_icache),         // Templated
+                     // Inputs
+                     .clk              (clk),                   // Templated
+                     .ic__rd_addr_0a   (ic__rd_addr_0a[31:0]),
+                     .ic__rd_req_0a    (ic__rd_req_0a),
+                     .bus_ack          (bus_ack_icache),        // Templated
+                     .bus_rdata        (bus_rdata),             // Templated
+                     .bus_ready        (bus_ready));            // Templated
        
        DCache dcache(
                .clk(clk),
@@ -92,65 +174,192 @@ module System(input clk);
                .bus_wdata(bus_wdata_dcache), .bus_rd(bus_rd_dcache),
                .bus_wr(bus_wr_dcache), .bus_ready(bus_ready));
 
-       BlockRAM blockram(
+`ifdef verilator
+       BigBlockRAM
+`else
+       BlockRAM
+`endif
+       blockram(
                .clk(clk),
                .bus_addr(bus_addr), .bus_rdata(bus_rdata_blockram),
                .bus_wdata(bus_wdata), .bus_rd(bus_rd), .bus_wr(bus_wr),
                .bus_ready(bus_ready_blockram));
 
+       /* Fetch AUTO_TEMPLATE (
+               .stall_0a(stall_cause_issue),
+               .jmp_0a(jmp),
+               .jmppc_0a(jmppc),
+               );
+       */
        Fetch fetch(
-               .clk(clk),
-               .Nrst(1'b1 /* XXX */),
-               .rd_addr(icache_rd_addr), .rd_req(icache_rd_req),
-               .rd_wait(icache_rd_wait), .rd_data(icache_rd_data),
-               .stall(stall_cause_issue), .jmp(jmp), .jmppc(jmppc),
-               .bubble(bubble_out_fetch), .insn(insn_out_fetch),
-               .pc(pc_out_fetch));
+               /*AUTOINST*/
+                   // Outputs
+                   .ic__rd_addr_0a     (ic__rd_addr_0a[31:0]),
+                   .ic__rd_req_0a      (ic__rd_req_0a),
+                   .bubble_1a          (bubble_1a),
+                   .insn_1a            (insn_1a[31:0]),
+                   .pc_1a              (pc_1a[31:0]),
+                   // Inputs
+                   .clk                (clk),
+                   .Nrst               (Nrst),
+                   .ic__rd_wait_0a     (ic__rd_wait_0a),
+                   .ic__rd_data_1a     (ic__rd_data_1a[31:0]),
+                   .stall_0a           (stall_cause_issue),     // Templated
+                   .jmp_0a             (jmp),                   // Templated
+                   .jmppc_0a           (jmppc));                // Templated
        
+       /* Issue AUTO_TEMPLATE (
+               .stall(stall_cause_execute),
+               .flush(execute_out_backflush | writeback_out_backflush),
+               .cpsr(writeback_out_cpsr),
+               .outstall(stall_cause_issue),
+               .outbubble(bubble_out_issue),
+               .outpc(pc_out_issue),
+               .outinsn(insn_out_issue),
+               );
+       */
        Issue issue(
-               .clk(clk),
-               .Nrst(1'b1 /* XXX */),
-               .stall(stall_cause_execute), .flush(execute_out_backflush),
-               .inbubble(bubble_out_fetch), .insn(insn_out_fetch),
-               .inpc(pc_out_fetch), .cpsr(32'b0 /* XXX */),
-               .outstall(stall_cause_issue), .outbubble(bubble_out_issue),
-               .outpc(pc_out_issue), .outinsn(insn_out_issue));
+               /*AUTOINST*/
+                   // Outputs
+                   .outstall           (stall_cause_issue),     // Templated
+                   .outbubble          (bubble_out_issue),      // Templated
+                   .outpc              (pc_out_issue),          // Templated
+                   .outinsn            (insn_out_issue),        // Templated
+                   // Inputs
+                   .clk                (clk),
+                   .Nrst               (Nrst),
+                   .stall              (stall_cause_execute),   // Templated
+                   .flush              (execute_out_backflush | writeback_out_backflush), // Templated
+                   .bubble_1a          (bubble_1a),
+                   .insn_1a            (insn_1a[31:0]),
+                   .pc_1a              (pc_1a[31:0]),
+                   .cpsr               (writeback_out_cpsr));   // Templated
        
+       /* RegFile AUTO_TEMPLATE (
+               .spsr(regfile_spsr),
+               .write(regfile_write),
+               .write_reg(regfile_write_reg),
+               .write_data(regfile_write_data),
+               );
+       */
+       wire [3:0] rf__read_3_4a;
        RegFile regfile(
-               .clk(clk),
-               .read_0(regfile_read_0), .read_1(regfile_read_1), .read_2(regfile_read_2),
-               .rdata_0(regfile_rdata_0), .rdata_1(regfile_rdata_1), .rdata_2(regfile_rdata_2),
-               .spsr(regfile_spsr), .write(4'b0), .write_req(1'b0), .write_data(10 /* XXX */));
+               /*AUTOINST*/
+                       // Outputs
+                       .rf__rdata_0_1a (rf__rdata_0_1a[31:0]),
+                       .rf__rdata_1_1a (rf__rdata_1_1a[31:0]),
+                       .rf__rdata_2_1a (rf__rdata_2_1a[31:0]),
+                       .rf__rdata_3_4a (rf__rdata_3_4a[31:0]),
+                       .spsr           (regfile_spsr),          // Templated
+                       // Inputs
+                       .clk            (clk),
+                       .Nrst           (Nrst),
+                       .rf__read_0_1a  (rf__read_0_1a[3:0]),
+                       .rf__read_1_1a  (rf__read_1_1a[3:0]),
+                       .rf__read_2_1a  (rf__read_2_1a[3:0]),
+                       .rf__read_3_4a  (rf__read_3_4a[3:0]),
+                       .write          (regfile_write),         // Templated
+                       .write_reg      (regfile_write_reg),     // Templated
+                       .write_data     (regfile_write_data));   // Templated
        
+       /* Decode AUTO_TEMPLATE (
+               .stall(stall_cause_execute),
+               .incpsr(writeback_out_cpsr),
+               .inspsr(writeback_out_spsr),
+               .op0(decode_out_op0),
+               .op1(decode_out_op1),
+               .op2(decode_out_op2),
+               .carry(decode_out_carry),
+               .outcpsr(decode_out_cpsr),
+               .outspsr(decode_out_spsr),
+               );
+       */
        Decode decode(
-               .clk(clk),
-               .insn(insn_out_fetch), .inpc(pc_out_fetch), .incpsr(32'b0 /* XXX */), .inspsr(regfile_spsr),
-               .op0(decode_out_op0), .op1(decode_out_op1), .op2(decode_out_op2),
-               .carry(decode_out_carry), .outspsr(decode_out_spsr),
-               .read_0(regfile_read_0), .read_1(regfile_read_1), .read_2(regfile_read_2), 
-               .rdata_0(regfile_rdata_0), .rdata_1(regfile_rdata_1), .rdata_2(regfile_rdata_2));
+               /*AUTOINST*/
+                     // Outputs
+                     .op0              (decode_out_op0),        // Templated
+                     .op1              (decode_out_op1),        // Templated
+                     .op2              (decode_out_op2),        // Templated
+                     .carry            (decode_out_carry),      // Templated
+                     .outcpsr          (decode_out_cpsr),       // Templated
+                     .outspsr          (decode_out_spsr),       // Templated
+                     .rf__read_0_1a    (rf__read_0_1a[3:0]),
+                     .rf__read_1_1a    (rf__read_1_1a[3:0]),
+                     .rf__read_2_1a    (rf__read_2_1a[3:0]),
+                     // Inputs
+                     .clk              (clk),
+                     .stall            (stall_cause_execute),   // Templated
+                     .insn_1a          (insn_1a[31:0]),
+                     .pc_1a            (pc_1a[31:0]),
+                     .incpsr           (writeback_out_cpsr),    // Templated
+                     .inspsr           (writeback_out_spsr),    // Templated
+                     .rf__rdata_0_1a   (rf__rdata_0_1a[31:0]),
+                     .rf__rdata_1_1a   (rf__rdata_1_1a[31:0]),
+                     .rf__rdata_2_1a   (rf__rdata_2_1a[31:0]));
        
        Execute execute(
-               .clk(clk), .Nrst(1'b0),
-               .stall(1'b0 /* XXX */), .flush(1'b0),
+               .clk(clk), .Nrst(~rst),
+               .stall(stall_cause_memory), .flush(writeback_out_backflush),
                .inbubble(bubble_out_issue), .pc(pc_out_issue), .insn(insn_out_issue),
-               .cpsr(32'b0 /* XXX */), .spsr(decode_out_spsr), .op0(decode_out_op0), .op1(decode_out_op1),
+               .cpsr(decode_out_cpsr), .spsr(decode_out_spsr), .op0(decode_out_op0), .op1(decode_out_op1),
                .op2(decode_out_op2), .carry(decode_out_carry),
                .outstall(stall_cause_execute), .outbubble(bubble_out_execute),
                .write_reg(execute_out_write_reg), .write_num(execute_out_write_num),
                .write_data(execute_out_write_data),
-               .jmp(jmp), .jmppc(jmppc),
-               .outpc(pc_out_execute), .outinsn(insn_out_execute));
+               .jmp(jmp_out_execute), .jmppc(jmppc_out_execute),
+               .outpc(pc_out_execute), .outinsn(insn_out_execute),
+               .outop0(execute_out_op0), .outop1(execute_out_op1), .outop2(execute_out_op2),
+               .outcpsr(execute_out_cpsr), .outspsr(execute_out_spsr), .outcpsrup(execute_out_cpsrup));
        assign execute_out_backflush = jmp;
+       
+       assign cp_insn = insn_out_execute;
+       Memory memory(
+               .clk(clk), .Nrst(~rst),
+               /* stall? */ .flush(writeback_out_backflush),
+               .busaddr(dcache_addr), .rd_req(dcache_rd_req), .wr_req(dcache_wr_req),
+               .rw_wait(dcache_rw_wait), .wr_data(dcache_wr_data), .rd_data(dcache_rd_data),
+               .st_read(rf__read_3_4a), .st_data(rf__rdata_3_4a),
+               .inbubble(bubble_out_execute), .pc(pc_out_execute), .insn(insn_out_execute),
+               .op0(execute_out_op0), .op1(execute_out_op1), .op2(execute_out_op2),
+               .spsr(execute_out_spsr), .cpsr(execute_out_cpsr), .cpsrup(execute_out_cpsrup),
+               .write_reg(execute_out_write_reg), .write_num(execute_out_write_num), .write_data(execute_out_write_data),
+               .outstall(stall_cause_memory), .outbubble(bubble_out_memory), 
+               .outpc(pc_out_memory), .outinsn(insn_out_memory),
+               .out_write_reg(memory_out_write_reg), .out_write_num(memory_out_write_num), 
+               .out_write_data(memory_out_write_data),
+               .cp_req(cp_req), .cp_ack(cp_ack), .cp_busy(cp_busy), .cp_rnw(cp_rnw), .cp_read(cp_read), .cp_write(cp_write),
+               .outcpsr(memory_out_cpsr), .outspsr(memory_out_spsr), .outcpsrup(memory_out_cpsrup) /* XXX data_size */);
+       
+       Terminal terminal(      
+               .clk(clk),
+               .cp_req(cp_req), .cp_insn(cp_insn), .cp_ack(cp_ack_terminal), .cp_busy(cp_busy_terminal), .cp_rnw(cp_rnw),
+               .cp_read(cp_read_terminal), .cp_write(cp_write)
+`ifdef verilator
+`else
+               , .sys_odata(sys_odata), .sys_tookdata(sys_tookdata), .sys_idata(sys_idata)
+`endif
+               );
+       
+       Writeback writeback(
+               .clk(clk),
+               .inbubble(bubble_out_memory),
+               .write_reg(memory_out_write_reg), .write_num(memory_out_write_num), .write_data(memory_out_write_data),
+               .cpsr(memory_out_cpsr), .spsr(memory_out_spsr), .cpsrup(memory_out_cpsrup),
+               .regfile_write(regfile_write), .regfile_write_reg(regfile_write_reg), .regfile_write_data(regfile_write_data),
+               .outcpsr(writeback_out_cpsr), .outspsr(writeback_out_spsr), 
+               .jmp(jmp_out_writeback), .jmppc(jmppc_out_writeback));
+       assign writeback_out_backflush = jmp_out_writeback;
 
        reg [31:0] clockno = 0;
        always @(posedge clk)
        begin
                clockno <= clockno + 1;
                $display("------------------------------------------------------------------------------");
-               $display("%3d: FETCH:            Bubble: %d, Instruction: %08x, PC: %08x", clockno, bubble_out_fetch, insn_out_fetch, pc_out_fetch);
+               $display("%3d: FETCH:            Bubble: %d, Instruction: %08x, PC: %08x", clockno, bubble_1a, insn_1a, pc_1a);
                $display("%3d: ISSUE:  Stall: %d, Bubble: %d, Instruction: %08x, PC: %08x", clockno, stall_cause_issue, bubble_out_issue, insn_out_issue, pc_out_issue);
-               $display("%3d: DECODE:                      op1 %08x, op2 %08x, op3 %08x, carry %d", clockno, decode_out_op0, decode_out_op1, decode_out_op2, decode_out_carry);
-               $display("%3d: EXEC:   Stall: %d, Bubble: %d, Instruction: %08x, PC: %08x, Reg: %d, [%08x -> %d], Jmp: %d [%08x]", clockno, stall_cause_execute, bubble_out_execute, insn_out_execute, pc_out_execute, execute_out_write_reg, execute_out_write_data, execute_out_write_num, jmp, jmppc);
+               $display("%3d: DECODE:                      op0 %08x, op1 %08x, op2 %08x, carry %d", clockno, decode_out_op0, decode_out_op1, decode_out_op2, decode_out_carry);
+               $display("%3d: EXEC:   Stall: %d, Bubble: %d, Instruction: %08x, PC: %08x, Reg: %d, [%08x -> %d], Jmp: %d [%08x]", clockno, stall_cause_execute, bubble_out_execute, insn_out_execute, pc_out_execute, execute_out_write_reg, execute_out_write_data, execute_out_write_num, jmp_out_execute, jmppc_out_execute);
+               $display("%3d: MEMORY: Stall: %d, Bubble: %d, Instruction: %08x, PC: %08x, Reg: %d, [%08x -> %d]", clockno, stall_cause_memory, bubble_out_memory, insn_out_memory, pc_out_memory, memory_out_write_reg, memory_out_write_data, memory_out_write_num);
+               $display("%3d: WRITEB:                      CPSR %08x, SPSR %08x, Reg: %d [%08x -> %d], Jmp: %d [%08x]", clockno, writeback_out_cpsr, writeback_out_spsr, regfile_write, regfile_write_data, regfile_write_reg, jmp_out_writeback, jmppc_out_writeback);
        end
 endmodule
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