X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/f61f8d6fb3090fa94005148aef02a219ad088da8..e3183a087362f1f2aef0af0cdc402de11a68cf50:/system.v?ds=inline diff --git a/system.v b/system.v index a4d13a4..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; @@ -9,116 +18,386 @@ module System(input clk); wire bus_rd, bus_wr; wire bus_ready; - wire bus_req_icache; - assign bus_req = {7'b0, bus_req_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 stall_cause_issue; - wire stall_cause_execute; + 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; + 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; - wire execute_out_stall, execute_out_bubble; + + 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), - /* 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)); - - BlockRAM blockram( + .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( - .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(1'b0 /* XXX */), .jmppc(32'b0 /* XXX */), - .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_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( - .clk(clk), - .Nrst(1'b1 /* XXX */), - .stall(stall_cause_execute), .flush(1'b0 /* XXX */), - .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 + .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( - .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), - .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), + .cpsr_1a(writeback_out_cpsr), + .spsr_1a(writeback_out_spsr), + ); + */ Decode decode( - .clk(clk), - .insn(insn_out_fetch), .inpc(pc_out_fetch), .incpsr(32'b0 /* XXX */), - .op0(decode_out_op0), .op1(decode_out_op1), .op2(decode_out_op2), - .carry(decode_out_carry), - .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_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( - .clk(clk), .Nrst(1'b0), - .stall(1'b0 /* XXX */), .flush(1'b0 /* XXX */), - .inbubble(bubble_out_issue), .pc(pc_out_issue), .insn(insn_out_issue), - .cpsr(32'b0 /* XXX */), .op0(decode_out_op0), .op1(decode_out_op1), - .op2(decode_out_op2), .carry(decode_out_carry), - .outstall(stall_cause_execute), .outbubble(execute_out_bubble), - .write_reg(execute_out_write_reg), .write_num(execute_out_write_num), - .write_data(execute_out_write_data)); + /*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_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: op1 %08x, op2 %08x, op3 %08x, carry %d", clockno, decode_out_op0, decode_out_op1, decode_out_op2, decode_out_carry); + $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