Subversion Repositories embedded_risc

/*********************************************************
 MODULE:		Top Level System On A Chip Design
 
 FILE NAME:	soc.v
 DATE:		May 7th, 2002
 AUTHOR:		Hossein Amidi
 COMPANY:	
 CODE TYPE:	Register Transfer Level
 
 DESCRIPTION:	This module is the top level RTL code of System On a Chip Verilog code.
 It will instantiate the following blocks in the ASIC:
 
 1)   Vertex STARTUP
 2)	DLL
 3)	RISC uProcessor
 4)	DMA Cntrl
 5)	LRU Data Cache
 6)	LRU Instruction Cache
 7)	Bus Arbiter
 8)	UART
 9)	Timer
 10)  Flash Controller
 11)	SDRAM Controller
 
 Hossein Amidi
 (C) May 2002
 
*********************************************************/
 
// DEFINES
`timescale 1ns / 10ps
 
// TOP MODULE
module soc(	// Inputs
						clk,
						reset,
						irq,
						ser_rxd,
						flash_datain,
						mem_datain,
						// Outputs
						pll_lock,
						addr,
						cs,
						ras,
						cas,
						we,
						dqm,
						cke,
						ba,
						pllclk,
						halted,
						ser_txd,
						flash_cle,
						flash_ale,
						flash_ce,
						flash_re,
						flash_we,
						flash_wp,
						flash_rb,
						flash_irq,
						flash_dataout,
						mem_dataout,
						mem_addr,
						mem_req,
						mem_rdwr,
						// Inouts
						dq
						);
 
// Parameter
`include        "parameter.v"
 
 
// Inputs
input clk;
input reset;
input irq;
input ser_rxd;
input [flash_size - 1 : 0]flash_datain;
input [data_size - 1 : 0]mem_datain;
 
// Outputs
output pll_lock;
output [add_size - 1 : 0]addr;
output [cs_size  - 1 : 0]cs;
output ras;
output cas;
output we;
output [dqm_size - 1 : 0]dqm;
output cke;
output [ba_size - 1 : 0]ba;
output pllclk;
output halted;
output ser_txd;
output flash_cle;
output flash_ale;
output flash_ce;
output flash_re;
output flash_we;
output flash_wp;
output flash_rb;
output flash_irq;
output [flash_size - 1 : 0]flash_dataout;
output [data_size -1 : 0]mem_dataout;
output [padd_size - 1 : 0]mem_addr;
output mem_req;
output mem_rdwr;
 
// Inouts
inout [data_size - 1 : 0]dq;
 
 
// Signal Declarations
wire clk;
wire reset;
wire irq;
wire [add_size - 1 : 0]addr;
wire [cs_size - 1 : 0]cs;
wire ras;
wire cas;
wire we;
wire [dqm_size - 1 : 0]dqm;
wire cke;
wire [ba_size - 1 : 0]ba;
wire pllclk;
wire halted;
wire [data_size - 1 : 0]dq;
 
wire system_irq;
 
// RISC Signal Declarations
wire [irq_size - 1 : 0]interrupt;
wire cmdack;
wire [arbiter_bus_size - 1 : 0]bus_grant;
wire [data_size - 1 : 0]dcache_host_datain;
wire [data_size - 1 : 0]icache_host_datain;
wire dcache_hit;
wire dcache_miss;
wire icache_hit;
wire icache_miss;
wire [data_size - 1 : 0]dma_host_datain;
wire [padd_size - 1 : 0]host_addr;
wire [cmd_size - 1 : 0]host_cmd;
wire [dqm_size - 1 : 0]host_dm;
wire [arbiter_bus_size - 1 : 0]bus_request;
wire dcache_request;
wire icache_request;
wire [data_size - 1 : 0]dma_host_dataout; 
wire [data_size - 1 : 0]dcache_host_dataout;
wire [data_size - 1 : 0]icache_host_dataout;
 
// DMA Signal Declarations
wire [fifo_size - 1 : 0]dma_rd_datain;
wire [fifo_size - 1 : 0]dma_wr_datain;
wire dma_irq;
wire [padd_size - 1 : 0]dma_rd_addr;
wire [padd_size - 1 : 0]dma_wr_addr;
wire [cmd_size - 1 : 0]dma_rd_cmd;
wire [fifo_size - 1 : 0]dma_wr_dataout; 
wire [fifo_size - 1 : 0]dma_rd_dataout; 
wire dma_busy;
 
 
// LRU Data Cache Signal Declarations
wire [data_size - 1 : 0]dcache_datain;
wire [padd_size - 1 : 0]dcache_addr;
wire [cmd_size - 1 : 0]dcache_cmd;
wire [data_size - 1 : 0]dcache_dataout; 
wire [padd_size - 1 : 0]sdram_addr;
wire [cmd_size - 1 : 0]sdram_cmd;
 
 
// LRU Instruction Cache Signal Declarations
wire [data_size - 1 : 0]icache_datain;
wire [padd_size - 1 : 0]icache_addr;
wire [cmd_size - 1 : 0]icache_cmd;
wire [data_size - 1 : 0]icache_dataout; 
 
 
// Bus Arbiter Signal Declarations
wire [data_size - 1 : 0]sdram_datain;
wire [data_size - 1 : 0]sdram_dataout;
 
 
// SDRAM Controller Signal Declarations
 
 
// UART Signal Declarations
wire uart_cs;
wire uart_rd;
wire uart_wr;
wire ser_rxd;
wire ser_txd;
wire [data_size - 1 : 0]uart_host_datain;
wire [data_size - 1 : 0]uart_host_dataout;
 
// Timer Signal Declarations
wire [data_size - 1 : 0]timer_host_datain;
wire timer_irq;
wire [data_size - 1 : 0]timer_host_dataout;
 
 
// Flash Controller Signal Decelaration
wire [data_size - 1 : 0]flash_host_dataout;
wire [flash_size - 1 : 0]flash_datain;
wire [data_size - 1 : 0]flash_host_datain;
wire flash_cle;
wire flash_ale;
wire flash_ce;
wire flash_re;
wire flash_we;
wire flash_wp;
wire flash_rb;
wire flash_irq;
wire [flash_size - 1 : 0]flash_dataout;
 
 
// Memory
wire [data_size - 1 :0]mem_dataout;
wire [data_size - 1 :0]mem_datain;
wire mem_req;
wire mem_rdwr;
wire [padd_size - 1 : 0]mem_addr;
 
assign mem_addr = host_addr;
 
 
 
 
// Assignment statments
assign system_irq = irq;
assign interrupt = {timer_irq,dma_irq,system_irq};
 
/*--------------------------- Module Instantiation ----------------------------*/
 
STARTUP_VIRTEX u22 (.GSR(reset));
 
/*--------------------------- DLL Instantiation Block ----------------------------*/
wire CLKIN_w;
wire clk0;
 
wire CLK0_dll, CLK90_dll, CLK180_dll, CLK2X_dll, CLKDV2_dll;
wire clk0_90, clk0_180, clk0_2x, clk0_dv2;
wire pll_lock;
 
IBUFG clkpad (.I(clk), .O(CLKIN_w));
 
CLKDLL dll_0 (.CLKIN(CLKIN_w), .CLKFB(clk0), .RST(reset), 
            .CLK0(CLK0_dll), .CLK90(CLK90_dll), .CLK180(CLK180_dll), .CLK270(),
            .CLK2X(CLK2X_dll), .CLKDV(CLKDV2_dll), .LOCKED(pll_lock));
 
BUFG  u1 (.I(CLK0_dll),   .O(clk0));
BUFG  u2 (.I(CLK180_dll),  .O(clk0_180));
BUFG  u3 (.I(CLK2X_dll), .O(clk0_2x));
 
 
 
//assign pllclk = clk0_180;
 
assign pllclk = clk0;
 
/****************************** Sub Level Block Instantiation ****************************/
 
risc uProcessor0(	// Input
						.reset(reset),
						.clk0(clk0),
						.pll_lock(pll_lock),
						.interrupt(interrupt),
						.cmdack(cmdack),
						.dcache_datain(dcache_host_datain),
						.dcache_hit(dcache_hit),
						.dcache_miss(dcache_miss),
						.icache_datain(icache_host_datain),
						.icache_hit(icache_hit),
						.icache_miss(icache_miss),
						.dma_datain(dma_host_datain),
						.dma_busy(dma_busy),
						.timer_host_datain(timer_host_datain),
						.flash_host_datain(flash_host_datain),
						.uart_host_datain(uart_host_datain),
						.mem_datain(mem_datain),
						// Output
						.paddr(host_addr),
						.cmd(host_cmd),
						.dm(host_dm),
						.dcache_request(dcache_request),
						.icache_request(icache_request),
						.dma_dataout(dma_host_dataout),
						.dcache_dataout(dcache_host_dataout),
						.icache_dataout(icache_host_dataout),
						.timer_host_dataout(timer_host_dataout),
						.flash_host_dataout(flash_host_dataout),
						.uart_host_dataout(uart_host_dataout),
						.mem_dataout(mem_dataout),
						.mem_req(mem_req),
						.mem_rdwr(mem_rdwr),
						.halted(halted)
						);
 
 
dma_cntrl dma_cntrl0(// Input
							.reset(reset),
							.clk0(clk0),
							.dma_host_addr(host_addr),
							.dma_host_cmd(host_cmd),
							.dma_host_datain(dma_host_dataout),
							.dma_bus_grant(bus_grant[2]),
							.dma_rd_datain(dma_rd_datain),
							.dma_wr_datain(dma_wr_datain),
							// Output
							.dma_host_dataout(dma_host_datain),
							.dma_irq(dma_irq),
							.dma_bus_req(bus_request[2]),
							.dma_rd_addr(dma_rd_addr),
							.dma_wr_addr(dma_wr_addr),
							.dma_wr_dataout(dma_wr_dataout),
							.dma_rd_cmd(dma_rd_cmd),
							.dma_busy(dma_busy),
							.uart_cs(uart_cs),
							.uart_rd(uart_rd),
							.uart_wr(uart_wr),
							.dma_rd_dataout(dma_rd_dataout)
							);
 
 
 
lru_data_cache lru_data_cache0(// Input
										.reset(reset),
										.clk0(clk0),
										.cache_host_addr(host_addr),
										.cache_host_cmd(host_cmd),
										.cache_request(dcache_request),
										.cache_host_datain(dcache_host_dataout),
										.cache_bus_grant(bus_grant[0]),
										.cache_datain(dcache_datain),
										// Output
										.cache_host_dataout(dcache_host_datain),
										.cache_hit(dcache_hit),
										.cache_miss(dcache_miss),
										.cache_bus_request(bus_request[0]),
										.cache_addr(dcache_addr),
										.cache_cmd(dcache_cmd),
										.cache_dataout(dcache_dataout)
										);
 
 
lru_instruction_cache lru_inst_cache0(// Input
													.reset(reset),
													.clk0(clk0),
													.cache_host_addr(host_addr),
													.cache_host_cmd(host_cmd),
													.cache_request(icache_request),
													.cache_host_datain(icache_host_dataout),
													.cache_bus_grant(bus_grant[1]),
													.cache_datain(icache_datain),
													// Output
													.cache_host_dataout(icache_host_datain),
													.cache_hit(icache_hit),
													.cache_miss(icache_miss),
													.cache_bus_request(bus_request[1]),
													.cache_addr(icache_addr),
													.cache_cmd(icache_cmd),
													.cache_dataout(icache_dataout)
													);
 
 
bus_arbiter  bus_arbiter0(	// Input
									.reset(reset),
									.clk0(clk0),
									.bus_request(bus_request),
									.dma_dataout(dma_wr_dataout),
									.dma_addr(dma_rd_addr),
									.dma_cmd(dma_rd_cmd),
									.dcache_dataout(dcache_dataout),
									.dcache_addr(dcache_addr),
									.dcache_cmd(dcache_cmd),
									.icache_dataout(icache_dataout),
									.icache_addr(icache_addr),
									.icache_cmd(icache_cmd),
									.sdram_dataout(sdram_dataout),
									// Output
									.bus_grant(bus_grant),
									.dma_datain(dma_wr_datain),
									.dcache_datain(dcache_datain),
									.icache_datain(icache_datain),
									.sdram_addr(sdram_addr),
									.sdram_cmd(sdram_cmd),
									.sdram_datain(sdram_datain)
									);
 
 
uart  uart0(// Input
				.reset(reset),
				.clk0(clk0),
				.uart_addr(dma_wr_addr),
				.uart_host_addr(host_addr),
				.uart_host_cmd(host_cmd),
				.uart_cmd(dma_rd_cmd),
				.uart_host_datain(uart_host_dataout),
				.uart_cs(uart_cs),
				.uart_rd(uart_rd),
				.uart_wr(uart_wr),
				.ser_rxd(ser_rxd),
				.uart_datain(dma_rd_dataout),
				// Output
				.ser_txd(ser_txd),
				.uart_host_dataout(uart_host_datain),
				.uart_dataout(dma_rd_datain)
				);
 
 
timer 	timer0(	// Input
						.reset(reset),
						.clk0(clk0),
						.timer_host_datain(timer_host_dataout),
						.timer_cmd(host_cmd),
						.timer_addr(host_addr),
						// Output
						.timer_host_dataout(timer_host_datain),
						.timer_irq(timer_irq)
						);
 
 
flash_ctrl flash_ctrl0(// Inputs
								.reset(reset),
								.clk0(clk0),
								.flash_host_addr(host_addr),
								.flash_host_cmd(host_cmd),
								.flash_host_dataout(flash_host_dataout),
								.flash_datain(flash_datain),
								// Outputs
								.flash_host_datain(flash_host_datain),
								.flash_cle(flash_cle),
								.flash_ale(flash_ale),
								.flash_ce(flash_ce),
								.flash_re(flash_re),
								.flash_we(flash_we),
								.flash_wp(flash_wp),
								.flash_rb(flash_rb),
								.flash_irq(flash_irq),
								.flash_dataout(flash_dataout)
								);
 
 
 
sdram_ctrl sdram_ctrl0(// Inputs
								.clk0(clk0),
								.clk0_2x(clk0_2x),
								.reset(reset),
								.paddr(sdram_addr),
								.cmd(sdram_cmd),
								.dm(host_dm),
								.datain(sdram_datain),
								// Outputs
								.cmdack(cmdack),
								.addr(addr),
								.cs(cs),
								.ras(ras),
								.cas(cas),
								.we(we),
								.dqm(dqm),
								.cke(cke),
								.ba(ba),
								.dataout(sdram_dataout),
								// Inouts
								.dq(dq)
								);
 
endmodule