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[/] [mips_enhanced/] [trunk/] [grlib-gpl-1.0.19-b3188/] [designs/] [leon3-asic/] [testbench.vhd] - Rev 2
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------------------------------------------------------------------------------ -- LEON3 Demonstration design test bench -- Copyright (C) 2004 Jiri Gaisler, Gaisler Research -- -- This program is free software; you can redistribute it and/or modify -- it under the terms of the GNU General Public License as published by -- the Free Software Foundation; either version 2 of the License, or -- (at your option) any later version. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU General Public License for more details. ------------------------------------------------------------------------------ library ieee; use ieee.std_logic_1164.all; library gaisler; use gaisler.libdcom.all; use gaisler.sim.all; use work.debug.all; library techmap; use techmap.gencomp.all; library micron; use micron.components.all; use gaisler.jtagtst.all; use work.config.all; -- configuration entity testbench is generic ( fabtech : integer := CFG_FABTECH; memtech : integer := CFG_MEMTECH; padtech : integer := CFG_PADTECH; clktech : integer := CFG_CLKTECH; disas : integer := CFG_DISAS; -- Enable disassembly to console dbguart : integer := CFG_DUART; -- Print UART on console pclow : integer := CFG_PCLOW; clkperiod : integer := 20; -- system clock period romwidth : integer := 32; -- rom data width (8/32) romdepth : integer := 16; -- rom address depth sramwidth : integer := 32; -- ram data width (8/16/32) sramdepth : integer := 18; -- ram address depth srambanks : integer := 2; -- number of ram banks testen : integer := 0; scanen : integer := 0; testrst : integer := 0; testoen : integer := 0 ); end; architecture behav of testbench is constant promfile : string := "prom.srec"; -- rom contents constant sramfile : string := "sram.srec"; -- ram contents constant sdramfile : string := "sdram.srec"; -- sdram contents signal clk : std_logic := '0'; signal Rst : std_logic := '0'; -- Reset constant ct : integer := clkperiod/2; signal address : std_logic_vector(27 downto 0); signal data : std_logic_vector(31 downto 0); signal cb : std_logic_vector(15 downto 0); signal ramsn : std_logic_vector(4 downto 0); signal ramoen : std_logic_vector(4 downto 0); signal rwen : std_logic_vector(3 downto 0); signal rwenx : std_logic_vector(3 downto 0); signal romsn : std_logic_vector(1 downto 0); signal iosn : std_ulogic; signal oen : std_ulogic; signal read : std_ulogic; signal writen : std_ulogic; signal brdyn : std_ulogic; signal bexcn : std_ulogic; signal wdogn : std_logic; signal dsuen, dsutx, dsurx, dsubre, dsuact : std_ulogic; signal dsurst : std_ulogic; signal test : std_ulogic; signal error : std_logic; signal gpio : std_logic_vector(CFG_GRGPIO_WIDTH-1 downto 0); signal VCC : std_ulogic := '1'; signal NC : std_ulogic := 'Z'; signal clk2 : std_ulogic := '1'; signal sdcke : std_logic_vector ( 1 downto 0); -- clk en signal sdcsn : std_logic_vector ( 1 downto 0); -- chip sel signal sdwen : std_ulogic; -- write en signal sdrasn : std_ulogic; -- row addr stb signal sdcasn : std_ulogic; -- col addr stb signal sddqm : std_logic_vector ( 3 downto 0); -- data i/o mask signal sdclk : std_ulogic := '0'; signal lock : std_ulogic; signal txd1, rxd1 : std_ulogic; signal txd2, rxd2 : std_ulogic; signal roen, roout, nandout, promedac : std_ulogic; constant lresp : boolean := false; signal gnd : std_logic_vector(3 downto 0); signal clksel : std_logic_vector(1 downto 0); signal prom32 : std_ulogic; signal spw_clksel : std_logic_vector(1 downto 0); signal spw_clk : std_ulogic := '0'; signal spw_rxdp : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_rxsp : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_txdp : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_txsp : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_rxdn : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_rxsn : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_txdn : std_logic_vector(0 to CFG_SPW_NUM-1); signal spw_txsn : std_logic_vector(0 to CFG_SPW_NUM-1); begin -- clock and reset test <= '0' when testen = 0 else '1'; rxd1 <= '1' when (testen = 1) and (testoen = 1) else '0' when (testen = 1) and (testoen = 0) else txd1; dsuen <= '1' when (testen = 1) and (testrst = 1) else '0' when (testen = 1) and (testrst = 0) else '1', '0' after 1500 ns; dsubre <= '1' when (testen = 1) and (scanen = 1) else -- '0' when (testen = 1) and (scanen = 0) else '1'; '0' when (testen = 1) and (scanen = 0) else '0'; clksel <= "00"; spw_clksel <= "00"; error <= 'H'; gnd <= "0000"; clk <= not clk after ct * 1 ns; spw_clk <= not spw_clk after ct * 1 ns; rst <= dsurst; bexcn <= '1'; wdogn <= 'H'; gpio(2 downto 0) <= "HHL"; -- gpio(CFG_GRGPIO_WIDTH-1 downto 3) <= (others => 'H'); gpio(15 downto 11) <= "HLLHH"; --19 gpio(10 downto 8) <= "HLL"; --4 gpio(7 downto 0) <= (others => 'L'); cb(15 downto 8) <= "HHHHHHHH"; spw_rxdp <= spw_txdp; spw_rxsp <= spw_txsp; spw_rxdn <= spw_txdn; spw_rxsn <= spw_txsn; roen <= '0'; promedac <= '0'; prom32 <= '1'; rxd2 <= txd2; d3 : entity work.leon3mp generic map ( fabtech, memtech, padtech, clktech, disas, dbguart, pclow ) port map (rst, clksel, clk, lock, error, wdogn, address, data, cb(7 downto 0), sdclk, sdcsn, sdwen, sdrasn, sdcasn, sddqm, dsutx, dsurx, dsuen, dsubre, dsuact, txd1, rxd1, txd2, rxd2, ramsn, ramoen, rwen, oen, writen, read, iosn, romsn, brdyn, bexcn, gpio, prom32, promedac, spw_clksel, spw_clk, spw_rxdp, spw_rxdn, spw_rxsp, spw_rxsn, spw_txdp, spw_txdn, spw_txsp, spw_txsn, gnd(0), roen, roout, nandout, test); -- optional sdram sdcke <= "11"; sd0 : if (CFG_MCTRL_SDEN = 1) and (CFG_MCTRL_SEPBUS = 0) generate u0: mt48lc16m16a2 generic map (index => 0, fname => sdramfile) PORT MAP( Dq => data(31 downto 16), Addr => address(14 downto 2), Ba => address(16 downto 15), Clk => sdclk, Cke => sdcke(0), Cs_n => sdcsn(0), Ras_n => sdrasn, Cas_n => sdcasn, We_n => sdwen, Dqm => sddqm(3 downto 2)); u1: mt48lc16m16a2 generic map (index => 16, fname => sdramfile) PORT MAP( Dq => data(15 downto 0), Addr => address(14 downto 2), Ba => address(16 downto 15), Clk => sdclk, Cke => sdcke(0), Cs_n => sdcsn(0), Ras_n => sdrasn, Cas_n => sdcasn, We_n => sdwen, Dqm => sddqm(1 downto 0)); u2: mt48lc16m16a2 generic map (index => 0, fname => sdramfile) PORT MAP( Dq => data(31 downto 16), Addr => address(14 downto 2), Ba => address(16 downto 15), Clk => sdclk, Cke => sdcke(0), Cs_n => sdcsn(1), Ras_n => sdrasn, Cas_n => sdcasn, We_n => sdwen, Dqm => sddqm(3 downto 2)); u3: mt48lc16m16a2 generic map (index => 16, fname => sdramfile) PORT MAP( Dq => data(15 downto 0), Addr => address(14 downto 2), Ba => address(16 downto 15), Clk => sdclk, Cke => sdcke(0), Cs_n => sdcsn(1), Ras_n => sdrasn, Cas_n => sdcasn, We_n => sdwen, Dqm => sddqm(1 downto 0)); end generate; prom0 : for i in 0 to (romwidth/8)-1 generate sr0 : sram generic map (index => i, abits => romdepth, fname => promfile) port map (address(romdepth+1 downto 2), data(31-i*8 downto 24-i*8), romsn(0), rwen(i), oen); end generate; sram0 : for i in 0 to (sramwidth/8)-1 generate sr0 : sram generic map (index => i, abits => sramdepth, fname => sramfile) port map (address(sramdepth+1 downto 2), data(31-i*8 downto 24-i*8), ramsn(0), rwen(0), ramoen(0)); end generate; iuerr : process begin wait for 2500 ns; if to_x01(error) = '1' then wait on error; end if; assert (to_x01(error) = '1') report "*** IU in error mode, simulation halted ***" severity failure ; end process; test0 : grtestmod port map ( rst, clk, error, address(21 downto 2), data, iosn, oen, writen, brdyn); data <= buskeep(data) after 5 ns; cb <= buskeep(cb) after 5 ns; dsucom : process procedure dsucfg(signal dsurx : in std_ulogic; signal dsutx : out std_ulogic) is variable w32 : std_logic_vector(31 downto 0); variable c8 : std_logic_vector(7 downto 0); constant txp : time := clkperiod*16 * 1 ns; begin dsutx <= '1'; dsurst <= '0'; wait for 500 ns; dsurst <= '1'; wait; -- remove to run the DSU UART wait for 5010 ns; txc(dsutx, 16#55#, txp); -- sync uart txc(dsutx, 16#55#, txp); -- sync uart -- txc(dsutx, 16#c0#, txp); -- txa(dsutx, 16#90#, 16#00#, 16#00#, 16#00#, txp); -- txa(dsutx, 16#00#, 16#00#, 16#02#, 16#ae#, txp); -- txc(dsutx, 16#c0#, txp); -- txa(dsutx, 16#91#, 16#00#, 16#00#, 16#00#, txp); -- txa(dsutx, 16#00#, 16#00#, 16#06#, 16#ae#, txp); -- txc(dsutx, 16#c0#, txp); -- txa(dsutx, 16#90#, 16#00#, 16#00#, 16#24#, txp); -- txa(dsutx, 16#00#, 16#00#, 16#06#, 16#03#, txp); -- txc(dsutx, 16#c0#, txp); -- txa(dsutx, 16#90#, 16#00#, 16#00#, 16#20#, txp); -- txa(dsutx, 16#00#, 16#00#, 16#06#, 16#fc#, txp); txc(dsutx, 16#80#, txp); txa(dsutx, 16#40#, 16#00#, 16#00#, 16#00#, txp); rxi(dsurx, w32, txp, lresp); wait; txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#00#, 16#00#, 16#00#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#2f#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#00#, 16#00#, 16#20#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#01#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#40#, 16#00#, 16#40#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#0e#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#30#, 16#00#, 16#00#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#00#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#40#, 16#00#, 16#40#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#06#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#30#, 16#00#, 16#00#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#00#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#40#, 16#00#, 16#40#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#02#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#30#, 16#00#, 16#00#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#00#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#00#, 16#00#, 16#20#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#0f#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#40#, 16#00#, 16#43#, 16#10#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#0f#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#91#, 16#40#, 16#00#, 16#24#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#24#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#91#, 16#70#, 16#00#, 16#00#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#03#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#00#, 16#00#, 16#20#, txp); txa(dsutx, 16#00#, 16#00#, 16#ff#, 16#ff#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#40#, 16#00#, 16#48#, txp); txa(dsutx, 16#00#, 16#00#, 16#00#, 16#12#, txp); txc(dsutx, 16#c0#, txp); txa(dsutx, 16#90#, 16#40#, 16#00#, 16#60#, txp); txa(dsutx, 16#00#, 16#00#, 16#12#, 16#10#, txp); txc(dsutx, 16#80#, txp); txa(dsutx, 16#90#, 16#00#, 16#00#, 16#00#, txp); rxi(dsurx, w32, txp, lresp); txc(dsutx, 16#a0#, txp); txa(dsutx, 16#40#, 16#00#, 16#00#, 16#00#, txp); rxi(dsurx, w32, txp, lresp); end; begin dsucfg(dsutx, dsurx); wait; end process; end ;