`define BUS_ICACHE 1 `define BUS_DCACHE 0 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; wire [31:0] bus_rdata; wire [31:0] bus_wdata; wire bus_rd, bus_wr; wire bus_ready; 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 | bus_addr_dcache; assign bus_rdata = bus_rdata_blockram; 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; /*AUTOWIRE*/ // Beginning of automatic wires (for undeclared instantiated-module outputs) 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 // End of automatics wire execute_out_backflush; wire writeback_out_backflush; BusArbiter busarbiter(.bus_req(bus_req), .bus_ack(bus_ack)); /* 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), .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)); `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 ( .clk(clk), .Nrst(~rst), .stall_0a(stall_cause_issue), .jmp_0a(jmp), .jmppc_0a(jmppc), .bubble_1a(bubble_out_fetch), .insn_1a(insn_out_fetch), .pc_1a(pc_out_fetch), ); */ 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_out_fetch), // Templated .insn_1a (insn_out_fetch), // Templated .pc_1a (pc_out_fetch), // Templated // Inputs .clk (clk), // Templated .Nrst (~rst), // Templated .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 issue( .clk(clk), .Nrst(~rst), .stall(stall_cause_execute), .flush(execute_out_backflush | writeback_out_backflush), .inbubble(bubble_out_fetch), .insn(insn_out_fetch), .inpc(pc_out_fetch), .cpsr(writeback_out_cpsr), .outstall(stall_cause_issue), .outbubble(bubble_out_issue), .outpc(pc_out_issue), .outinsn(insn_out_issue)); RegFile regfile( .clk(clk), .Nrst(~rst), .read_0(regfile_read_0), .read_1(regfile_read_1), .read_2(regfile_read_2), .read_3(regfile_read_3), .rdata_0(regfile_rdata_0), .rdata_1(regfile_rdata_1), .rdata_2(regfile_rdata_2), .rdata_3(regfile_rdata_3), .spsr(regfile_spsr), .write(regfile_write), .write_reg(regfile_write_reg), .write_data(regfile_write_data)); Decode decode( .clk(clk), .stall(stall_cause_execute), .insn(insn_out_fetch), .inpc(pc_out_fetch), .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), .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)); Execute execute( .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(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_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(regfile_read_3), .st_data(regfile_rdata_3), .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: 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: 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