`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; 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 bubble_3a; // From execute of Execute.v wire carry_2a; // From decode of Decode.v wire [31:0] cpsr_2a; // From decode of Decode.v wire [31:0] cpsr_3a; // From execute of Execute.v wire cpsrup_3a; // From execute of Execute.v wire [2:0] dc__data_size_3a; // From memory of Memory.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] insn_3a; // From execute of Execute.v wire [31:0] op0_2a; // From decode of Decode.v wire [31:0] op0_3a; // From execute of Execute.v wire [31:0] op1_2a; // From decode of Decode.v wire [31:0] op1_3a; // From execute of Execute.v wire [31:0] op2_2a; // From decode of Decode.v wire [31:0] op2_3a; // From execute of Execute.v wire [31:0] pc_1a; // From fetch of Fetch.v wire [31:0] pc_2a; // From issue of Issue.v wire [31:0] pc_3a; // From execute of Execute.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_3a; // 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 [3:0] rf__read_3_3a; // From memory of Memory.v wire [31:0] spsr_2a; // From decode of Decode.v wire [31:0] spsr_3a; // From execute of Execute.v wire stall_0a; // From issue of Issue.v wire [31:0] write_data_3a; // From execute of Execute.v wire [3:0] write_num_3a; // From execute of Execute.v wire write_reg_3a; // From execute of Execute.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 ( .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_3a (rf__rdata_3_3a[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_3a (rf__read_3_3a[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_2a(writeback_out_backflush), .outstall_2a(stall_cause_execute), .jmp_2a(jmp_out_execute), .jmppc_2a(jmppc_out_execute), ); */ Execute execute( /*AUTOINST*/ // Outputs .outstall_2a (stall_cause_execute), // Templated .bubble_3a (bubble_3a), .cpsr_3a (cpsr_3a[31:0]), .spsr_3a (spsr_3a[31:0]), .cpsrup_3a (cpsrup_3a), .write_reg_3a (write_reg_3a), .write_num_3a (write_num_3a[3:0]), .write_data_3a (write_data_3a[31:0]), .jmppc_2a (jmppc_out_execute), // Templated .jmp_2a (jmp_out_execute), // Templated .pc_3a (pc_3a[31:0]), .insn_3a (insn_3a[31:0]), .op0_3a (op0_3a[31:0]), .op1_3a (op1_3a[31:0]), .op2_3a (op2_3a[31:0]), // Inputs .clk (clk), .Nrst (Nrst), .stall_2a (stall_cause_memory), // Templated .flush_2a (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; /* stall? */ /* Memory AUTO_TEMPLATE ( .flush(writeback_out_backflush), .dc__addr_3a(dcache_addr), .dc__rd_req_3a(dcache_rd_req), .dc__wr_req_3a(dcache_wr_req), .dc__rw_wait_3a(dcache_rw_wait), .dc__wr_data_3a(dcache_wr_data), .dc__rd_data_3a(dcache_rd_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), ); */ Memory memory( /*AUTOINST*/ // Outputs .dc__addr_3a (dcache_addr), // Templated .dc__rd_req_3a (dcache_rd_req), // Templated .dc__wr_req_3a (dcache_wr_req), // Templated .dc__wr_data_3a (dcache_wr_data), // Templated .dc__data_size_3a (dc__data_size_3a[2:0]), .rf__read_3_3a (rf__read_3_3a[3:0]), .cp_req (cp_req), // Templated .cp_rnw (cp_rnw), // Templated .cp_write (cp_write), // Templated .outstall (stall_cause_memory), // Templated .outbubble (bubble_out_memory), // Templated .outpc (pc_out_memory), // Templated .outinsn (insn_out_memory), // Templated .out_write_reg (memory_out_write_reg), // Templated .out_write_num (memory_out_write_num), // Templated .out_write_data (memory_out_write_data), // Templated .outspsr (memory_out_spsr), // Templated .outcpsr (memory_out_cpsr), // Templated .outcpsrup (memory_out_cpsrup), // Templated // Inputs .clk (clk), .Nrst (Nrst), .flush (writeback_out_backflush), // Templated .dc__rw_wait_3a (dcache_rw_wait), // Templated .dc__rd_data_3a (dcache_rd_data), // Templated .rf__rdata_3_3a (rf__rdata_3_3a[31:0]), .cp_ack (cp_ack), // Templated .cp_busy (cp_busy), // Templated .cp_read (cp_read), // Templated .bubble_3a (bubble_3a), .pc_3a (pc_3a[31:0]), .insn_3a (insn_3a[31:0]), .op0_3a (op0_3a[31:0]), .op1_3a (op1_3a[31:0]), .op2_3a (op2_3a[31:0]), .spsr_3a (spsr_3a[31:0]), .cpsr_3a (cpsr_3a[31:0]), .cpsrup_3a (cpsrup_3a), .write_reg_3a (write_reg_3a), .write_num_3a (write_num_3a[3:0]), .write_data_3a (write_data_3a[31:0])); 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