X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/e3a9107a371340e5a4b8646a7943f1d7da210563..a4f724e659b1bf3afea9de4aaaf64517c3d9844d:/system.v diff --git a/system.v b/system.v index 1635a34..689a0b0 100644 --- a/system.v +++ b/system.v @@ -1,7 +1,15 @@ `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; @@ -60,6 +68,7 @@ module System(input clk); 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; @@ -70,6 +79,7 @@ module System(input clk); 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; @@ -125,7 +135,12 @@ 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), @@ -133,7 +148,7 @@ module System(input clk); Fetch fetch( .clk(clk), - .Nrst(1'b1 /* XXX */), + .Nrst(~rst), .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), @@ -142,7 +157,7 @@ module System(input clk); Issue issue( .clk(clk), - .Nrst(1'b1 /* XXX */), + .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), @@ -150,7 +165,7 @@ module System(input clk); .outpc(pc_out_issue), .outinsn(insn_out_issue)); RegFile regfile( - .clk(clk), + .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), @@ -166,7 +181,7 @@ module System(input clk); .rdata_0(regfile_rdata_0), .rdata_1(regfile_rdata_1), .rdata_2(regfile_rdata_2)); Execute execute( - .clk(clk), .Nrst(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(decode_out_cpsr), .spsr(decode_out_spsr), .op0(decode_out_op0), .op1(decode_out_op1), @@ -177,37 +192,42 @@ module System(input clk); .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)); + .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(1'b0), + .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), + .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) /* XXX data_size */); + .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)); + .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), + .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));