X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/a0bb35e7281424366251f603173c5cfec5d15b51..e3183a087362f1f2aef0af0cdc402de11a68cf50:/system.v

diff --git a/system.v b/system.v
index ebf0882..071296c 100644
--- a/system.v
+++ b/system.v
@@ -1,6 +1,15 @@
-`define BUS_ICACHE 0
+`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;
@@ -8,38 +17,387 @@ module System(input clk);
 	wire [31:0] bus_wdata;
 	wire bus_rd, bus_wr;
 	wire bus_ready;
-	
-	wire bus_req_icache = bus_req[`BUS_ICACHE];
+
+	wire bus_req_icache;
+	wire bus_req_dcache;
+	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];
+	
 	wire [31:0] bus_addr_icache;
 	wire [31:0] bus_wdata_icache;
 	wire bus_rd_icache;
 	wire bus_wr_icache;
 	
+	wire [31:0] bus_addr_dcache;
+	wire [31:0] bus_wdata_dcache;
+	wire bus_rd_dcache;
+	wire bus_wr_dcache;
+	
 	wire [31:0] bus_rdata_blockram;
 	wire bus_ready_blockram;
 	
-	assign bus_addr = bus_addr_icache;
+	assign bus_addr = bus_addr_icache | bus_addr_dcache;
 	assign bus_rdata = bus_rdata_blockram;
-	assign bus_wdata = bus_wdata_icache;
-	assign bus_rd = bus_rd_icache;
-	assign bus_wr = bus_wr_icache;
+	assign bus_wdata = bus_wdata_icache | bus_wdata_dcache;
+	assign bus_rd = bus_rd_icache | bus_rd_dcache;
+	assign bus_wr = bus_wr_icache | bus_wr_dcache;
 	assign bus_ready = bus_ready_blockram;
 
+	wire [31:0] icache_rd_addr;
+	wire icache_rd_req;
+	wire icache_rd_wait;
+	wire [31:0] icache_rd_data;
+	
+	wire [31:0] dcache_addr;
+	wire dcache_rd_req, dcache_wr_req;
+	wire dcache_rw_wait;
+	wire [31:0] dcache_wr_data, dcache_rd_data;
+	
+	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, 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] 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		bubble_2a;		// From issue of Issue.v
+	wire		carry_2a;		// From decode of Decode.v
+	wire [31:0]	cpsr_2a;		// From decode of Decode.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]	insn_2a;		// From issue of Issue.v
+	wire [31:0]	op0_2a;			// From decode of Decode.v
+	wire [31:0]	op1_2a;			// From decode of Decode.v
+	wire [31:0]	op2_2a;			// From decode of Decode.v
+	wire [31:0]	pc_1a;			// From fetch of Fetch.v
+	wire [31:0]	pc_2a;			// From issue of Issue.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
+	wire [31:0]	spsr_2a;		// From decode of Decode.v
+	wire		stall_0a;		// From issue of Issue.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),
+		.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),
-		.rd_addr(), .rd_req(), .rd_wait(), .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));
+		.addr(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),
+		.bus_req(bus_req_dcache), .bus_ack(bus_ack_dcache),
+		.bus_addr(bus_addr_dcache), .bus_rdata(bus_rdata),
+		.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 (
+		.jmp_0a(jmp),
+		.jmppc_0a(jmppc),
+		);
+	*/
+	Fetch 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_0a),
+		    .jmp_0a		(jmp),			 // Templated
+		    .jmppc_0a		(jmppc));		 // Templated
+	
+	/* Issue AUTO_TEMPLATE (
+		.stall_1a(stall_cause_execute),
+		.flush_1a(execute_out_backflush | writeback_out_backflush),
+		.cpsr_1a(writeback_out_cpsr),
+		);
+	*/
+	Issue issue(
+		/*AUTOINST*/
+		    // Outputs
+		    .stall_0a		(stall_0a),
+		    .bubble_2a		(bubble_2a),
+		    .pc_2a		(pc_2a[31:0]),
+		    .insn_2a		(insn_2a[31:0]),
+		    // Inputs
+		    .clk		(clk),
+		    .Nrst		(Nrst),
+		    .stall_1a		(stall_cause_execute),	 // Templated
+		    .flush_1a		(execute_out_backflush | writeback_out_backflush), // Templated
+		    .bubble_1a		(bubble_1a),
+		    .insn_1a		(insn_1a[31:0]),
+		    .pc_1a		(pc_1a[31:0]),
+		    .cpsr_1a		(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(
+		/*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),
+		.cpsr_1a(writeback_out_cpsr),
+		.spsr_1a(writeback_out_spsr),
+		);
+	*/
+	Decode decode(
+		/*AUTOINST*/
+		      // Outputs
+		      .op0_2a		(op0_2a[31:0]),
+		      .op1_2a		(op1_2a[31:0]),
+		      .op2_2a		(op2_2a[31:0]),
+		      .carry_2a		(carry_2a),
+		      .cpsr_2a		(cpsr_2a[31:0]),
+		      .spsr_2a		(spsr_2a[31:0]),
+		      .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]),
+		      .cpsr_1a		(writeback_out_cpsr),	 // Templated
+		      .spsr_1a		(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 AUTO_TEMPLATE (
+		.stall_2a(stall_cause_memory),
+		.flush(writeback_out_backflush),
+		.outstall_2a(stall_cause_execute),
+		.bubble_3a(bubble_out_execute),
+		.write_reg_3a(execute_out_write_reg),
+		.write_num_3a(execute_out_write_num),
+		.write_data_3a(execute_out_write_data),
+		.jmp_2a(jmp_out_execute),
+		.jmppc_2a(jmppc_out_execute),
+		.pc_3a(pc_out_execute),
+		.insn_3a(insn_out_execute),
+		.op0_3a(execute_out_op0),
+		.op1_3a(execute_out_op1),
+		.op2_3a(execute_out_op2),
+		.outcpsr(execute_out_cpsr),
+		.outspsr(execute_out_spsr),
+		.outcpsrup(execute_out_cpsrup),
+		);
+	*/	
+	Execute execute(
+		/*AUTOINST*/
+			// Outputs
+			.outstall_2a	(stall_cause_execute),	 // Templated
+			.bubble_3a	(bubble_out_execute),	 // Templated
+			.outcpsr	(execute_out_cpsr),	 // Templated
+			.outspsr	(execute_out_spsr),	 // Templated
+			.outcpsrup	(execute_out_cpsrup),	 // Templated
+			.write_reg_3a	(execute_out_write_reg), // Templated
+			.write_num_3a	(execute_out_write_num), // Templated
+			.write_data_3a	(execute_out_write_data), // Templated
+			.jmppc_2a	(jmppc_out_execute),	 // Templated
+			.jmp_2a		(jmp_out_execute),	 // Templated
+			.pc_3a		(pc_out_execute),	 // Templated
+			.insn_3a	(insn_out_execute),	 // Templated
+			.op0_3a		(execute_out_op0),	 // Templated
+			.op1_3a		(execute_out_op1),	 // Templated
+			.op2_3a		(execute_out_op2),	 // Templated
+			// Inputs
+			.clk		(clk),
+			.Nrst		(Nrst),
+			.stall_2a	(stall_cause_memory),	 // Templated
+			.flush		(writeback_out_backflush), // Templated
+			.bubble_2a	(bubble_2a),
+			.pc_2a		(pc_2a[31:0]),
+			.insn_2a	(insn_2a[31:0]),
+			.cpsr_2a	(cpsr_2a[31:0]),
+			.spsr_2a	(spsr_2a[31:0]),
+			.op0_2a		(op0_2a[31:0]),
+			.op1_2a		(op1_2a[31:0]),
+			.op2_2a		(op2_2a[31:0]),
+			.carry_2a	(carry_2a));
+	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_1a, insn_1a, pc_1a);
+		$display("%3d: ISSUE:  Stall: %d, Bubble: %d, Instruction: %08x, PC: %08x", clockno, stall_0a, bubble_2a, insn_2a, pc_2a);
+		$display("%3d: DECODE:                      op0 %08x, op1 %08x, op2 %08x, carry %d", clockno, op0_2a, op1_2a, op2_2a, carry_2a);
+		$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