----------------------------------------------------------------------------- -- LEON3 Demonstration design -- 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. -- -- You should have received a copy of the GNU General Public License -- along with this program; if not, write to the Free Software -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ------------------------------------------------------------------------------ library ieee; use ieee.std_logic_1164.all; library grlib; use grlib.amba.all; use grlib.stdlib.all; library techmap; use techmap.gencomp.all; library gaisler; use gaisler.memctrl.all; use gaisler.leon3.all; use gaisler.uart.all; use gaisler.misc.all; library esa; use esa.memoryctrl.all; use work.config.all; library lpp; use lpp.lpp_amba.all; entity leon3mp 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 ); port ( clk50MHz : in std_ulogic; reset : in std_ulogic; ramclk : out std_logic; ahbrxd : in std_ulogic; -- DSU rx data ahbtxd : out std_ulogic; -- DSU tx data dsubre : in std_ulogic; dsuact : out std_ulogic; apbrxd : in std_ulogic; -- UART1 rx data apbtxd : out std_ulogic; -- UART1 tx data errorn : out std_ulogic; address : out std_logic_vector(18 downto 0); ramsn : out std_logic; romsn : out std_logic; ramoen : out std_logic; ramben : out std_logic_vector (3 downto 0); rwen : out std_logic; oen : out std_ulogic; iosn : out std_logic; writen : out std_ulogic; data : inout std_logic_vector(31 downto 0); gpio : inout std_logic_vector(6 downto 0); -- I/O port flash_byten : out std_logic; flash_rpn : out std_logic; sram_pwrdwn : out std_logic; sram_gwen : out std_logic; sram_adsc : out std_logic; sram_adsp : out std_logic; sram_adv : out std_logic; led : out std_logic_vector(5 downto 0) ); end; architecture Behavioral of leon3mp is constant maxahbmsp : integer := CFG_NCPU+CFG_AHB_UART+ CFG_GRETH+CFG_AHB_JTAG; constant maxahbm : integer := maxahbmsp; --Clk & Rst géné signal vcc : std_logic_vector(4 downto 0); signal gnd : std_logic_vector(4 downto 0); signal resetnl : std_ulogic; signal clk2x : std_ulogic; signal lclk : std_ulogic; signal clkm : std_ulogic; signal rstn : std_ulogic; signal rstraw : std_ulogic; signal pciclk : std_ulogic; signal sdclkl : std_ulogic; signal cgi : clkgen_in_type; signal cgo : clkgen_out_type; --- AHB / APB signal apbi : apb_slv_in_type; signal apbo : apb_slv_out_vector := (others => apb_none); signal ahbsi : ahb_slv_in_type; signal ahbso : ahb_slv_out_vector := (others => ahbs_none); signal ahbmi : ahb_mst_in_type; signal ahbmo : ahb_mst_out_vector := (others => ahbm_none); --UART signal ahbuarti : uart_in_type; signal ahbuarto : uart_out_type; signal apbuarti : uart_in_type; signal apbuarto : uart_out_type; --MEM CTRLR signal memi : memory_in_type; signal memo : memory_out_type; signal wpo : wprot_out_type; signal sdo : sdram_out_type; --IRQ signal irqi : irq_in_vector(0 to CFG_NCPU-1); signal irqo : irq_out_vector(0 to CFG_NCPU-1); --Timer signal gpti : gptimer_in_type; signal gpto : gptimer_out_type; --GPIO signal gpioi : gpio_in_type; signal gpioo : gpio_out_type; --DSU signal dbgi : l3_debug_in_vector(0 to CFG_NCPU-1); signal dbgo : l3_debug_out_vector(0 to CFG_NCPU-1); signal dsui : dsu_in_type; signal dsuo : dsu_out_type; constant IOAEN : integer := CFG_CAN; constant boardfreq : integer := 48000; begin flash_byten <= '1'; flash_rpn <= rstn; sram_pwrdwn <= '0'; sram_gwen <= '1'; sram_adsc <= '0'; sram_adsp <= '1'; ---------------------------------------------------------------------- --- Reset and Clock generation ------------------------------------- ---------------------------------------------------------------------- vcc <= (others => '1'); gnd <= (others => '0'); cgi.pllctrl <= "00"; cgi.pllrst <= rstraw; ramclk <= clkm; clk_pad : inpad generic map (tech => 0) port map (clk50MHz, lclk); clkgen0 : clkgen -- clock generator generic map (clktech, CFG_CLKMUL, CFG_CLKDIV, CFG_MCTRL_SDEN, CFG_CLK_NOFB, 0, 0, 0, boardfreq, 0, 0, CFG_OCLKDIV) port map (lclk, lclk, clkm, open, clk2x, sdclkl, pciclk, cgi, cgo); resetn_pad : inpad generic map (tech => padtech) port map (reset, resetnl); rst0 : rstgen -- reset generator port map (resetnl, clkm, cgo.clklock, rstn, rstraw); led(5) <= cgo.clklock; ---------------------------------------------------------------------- --- LEON3 processor / DSU / IRQ ------------------------------------ ---------------------------------------------------------------------- l3 : if CFG_LEON3 = 1 generate cpu : for i in 0 to CFG_NCPU-1 generate u0 : leon3s -- LEON3 processor generic map (i, fabtech, memtech, CFG_NWIN, CFG_DSU, CFG_FPU, CFG_V8, 0, CFG_MAC, pclow, 0, CFG_NWP, CFG_ICEN, CFG_IREPL, CFG_ISETS, CFG_ILINE, CFG_ISETSZ, CFG_ILOCK, CFG_DCEN, CFG_DREPL, CFG_DSETS, CFG_DLINE, CFG_DSETSZ, CFG_DLOCK, CFG_DSNOOP, CFG_ILRAMEN, CFG_ILRAMSZ, CFG_ILRAMADDR, CFG_DLRAMEN, CFG_DLRAMSZ, CFG_DLRAMADDR, CFG_MMUEN, CFG_ITLBNUM, CFG_DTLBNUM, CFG_TLB_TYPE, CFG_TLB_REP, CFG_LDDEL, disas, CFG_ITBSZ, CFG_PWD, CFG_SVT, CFG_RSTADDR, CFG_NCPU-1) port map (clkm, rstn, ahbmi, ahbmo(i), ahbsi, ahbso, irqi(i), irqo(i), dbgi(i), dbgo(i)); end generate; errorn_pad : outpad generic map (tech => padtech) port map (errorn, dbgo(0).error); dsugen : if CFG_DSU = 1 generate dsu0 : dsu3 -- LEON3 Debug Support Unit generic map (hindex => 2, haddr => 16#900#, hmask => 16#F00#, ncpu => CFG_NCPU, tbits => 30, tech => memtech, irq => 0, kbytes => CFG_ATBSZ) port map (rstn, clkm, ahbmi, ahbsi, ahbso(2), dbgo, dbgi, dsui, dsuo); -- dsuen_pad : inpad generic map (tech => padtech) port map (dsuen, dsui.enable); dsui.enable <= '1'; dsubre_pad : inpad generic map (tech => padtech) port map (dsubre, dsui.break); dsuact_pad : outpad generic map (tech => padtech) port map (dsuact, dsuo.active); end generate; end generate; nodsu : if CFG_DSU = 0 generate ahbso(2) <= ahbs_none; dsuo.tstop <= '0'; dsuo.active <= '0'; end generate; irqctrl : if CFG_IRQ3_ENABLE /= 0 generate irqctrl0 : irqmp -- interrupt controller generic map (pindex => 2, paddr => 2, ncpu => CFG_NCPU) port map (rstn, clkm, apbi, apbo(2), irqo, irqi); end generate; irq3 : if CFG_IRQ3_ENABLE = 0 generate x : for i in 0 to CFG_NCPU-1 generate irqi(i).irl <= "0000"; end generate; apbo(2) <= apb_none; end generate; ---------------------------------------------------------------------- --- Memory controllers --------------------------------------------- ---------------------------------------------------------------------- mctrl2 : if (CFG_MCTRL_LEON2 = 1) and (CFG_SSCTRL = 0) generate -- LEON2 memory controller sr1 : mctrl generic map (hindex => 0, pindex => 0, paddr => 0, srbanks => 2, sden => CFG_MCTRL_SDEN, ram8 => CFG_MCTRL_RAM8BIT, ram16 => CFG_MCTRL_RAM16BIT, invclk => CFG_MCTRL_INVCLK) port map (rstn, clkm, memi, memo, ahbsi, ahbso(0), apbi, apbo(0), wpo, sdo); sram_adv <= '1'; ramben_pads : for i in 0 to 3 generate x : outpad generic map (tech => padtech) port map (ramben(i), memo.mben(3-i)); end generate; end generate; mempads : if (CFG_MCTRL_LEON2 = 1) or (CFG_SSCTRL = 1) generate -- LEON2 memory controller addr_pad : outpadv generic map (width => 19, tech => padtech) port map (address, memo.address(20 downto 2)); rams_pad : outpad generic map (tech => padtech) port map (ramsn, memo.ramsn(0)); roms_pad : outpad generic map (tech => padtech) port map (romsn, memo.romsn(0)); iosn_pad : outpad generic map (tech => padtech) port map (iosn, memo.iosn); oen_pad : outpad generic map (tech => padtech) port map (oen, memo.oen); rwen_pad : outpad generic map (tech => padtech) port map (rwen, memo.writen); roen_pad : outpad generic map (tech => padtech) port map (ramoen, memo.ramoen(0)); wri_pad : outpad generic map (tech => padtech) port map (writen, memo.writen); -- read_pad : outpad generic map (tech => padtech) -- port map (read, memo.read); bdr : for i in 0 to 3 generate data_pad : iopadv generic map (tech => padtech, width => 8) port map (data(31-i*8 downto 24-i*8), memo.data(31-i*8 downto 24-i*8), memo.bdrive(i), memi.data(31-i*8 downto 24-i*8)); end generate; end generate; memi.brdyn <= '1'; memi.bexcn <= '1'; memi.writen <= '1'; memi.wrn <= "1111"; memi.bwidth <= "10"; ---------------------------------------------------------------------- --- AHB CONTROLLER ------------------------------------------------- ---------------------------------------------------------------------- ahb0 : ahbctrl -- AHB arbiter/multiplexer generic map (defmast => CFG_DEFMST, split => CFG_SPLIT, rrobin => CFG_RROBIN, ioaddr => CFG_AHBIO, ioen => IOAEN, nahbm => maxahbm, nahbs => 8) port map (rstn, clkm, ahbmi, ahbmo, ahbsi, ahbso); ---------------------------------------------------------------------- --- AHB UART ------------------------------------------------------- ---------------------------------------------------------------------- dcomgen : if CFG_AHB_UART = 1 generate dcom0: ahbuart -- Debug UART generic map (hindex => CFG_NCPU, pindex => 7, paddr => 7) port map (rstn, clkm, ahbuarti, ahbuarto, apbi, apbo(7), ahbmi, ahbmo(CFG_NCPU)); dsurx_pad : inpad generic map (tech => padtech) port map (ahbrxd, ahbuarti.rxd); dsutx_pad : outpad generic map (tech => padtech) port map (ahbtxd, ahbuarto.txd); led(0) <= not ahbuarti.rxd; led(1) <= not ahbuarto.txd; end generate; nouah : if CFG_AHB_UART = 0 generate apbo(7) <= apb_none; end generate; ---------------------------------------------------------------------- --- APB Bridge ----------------------------------------------------- ---------------------------------------------------------------------- apb0 : apbctrl -- AHB/APB bridge generic map (hindex => 1, haddr => CFG_APBADDR) port map (rstn, clkm, ahbsi, ahbso(1), apbi, apbo ); ---------------------------------------------------------------------- --- GPT Timer ------------------------------------------------------ ---------------------------------------------------------------------- gpt : if CFG_GPT_ENABLE /= 0 generate timer0 : gptimer -- timer unit generic map (pindex => 3, paddr => 3, pirq => CFG_GPT_IRQ, sepirq => CFG_GPT_SEPIRQ, sbits => CFG_GPT_SW, ntimers => CFG_GPT_NTIM, nbits => CFG_GPT_TW) port map (rstn, clkm, apbi, apbo(3), gpti, gpto); gpti.dhalt <= dsuo.tstop; gpti.extclk <= '0'; led(4) <= gpto.wdog; end generate; notim : if CFG_GPT_ENABLE = 0 generate apbo(3) <= apb_none; end generate; ---------------------------------------------------------------------- --- GPIO ----------------------------------------------------------- ---------------------------------------------------------------------- gpio0 : if CFG_GRGPIO_ENABLE /= 0 generate -- GR GPIO unit grgpio0: grgpio generic map( pindex => 11, paddr => 11, imask => CFG_GRGPIO_IMASK, nbits => 7) port map( rstn, clkm, apbi, apbo(11), gpioi, gpioo); pio_pads : for i in 0 to 6 generate pio_pad : iopad generic map (tech => padtech) port map (gpio(i), gpioo.dout(i), gpioo.oen(i), gpioi.din(i)); end generate; end generate; ---------------------------------------------------------------------- --- APB UART ------------------------------------------------------- ---------------------------------------------------------------------- ua1 : if CFG_UART1_ENABLE /= 0 generate uart1 : apbuart -- UART 1 generic map (pindex => 1, paddr => 1, pirq => 2, console => dbguart, fifosize => CFG_UART1_FIFO) port map (rstn, clkm, apbi, apbo(1), ahbuarti, apbuarto); apbuarti.rxd <= apbrxd; apbuarti.extclk <= '0'; apbtxd <= apbuarto.txd; apbuarti.ctsn <= '0'; --rtsn1 <= apbuarto.rtsn; led(2) <= not apbuarti.rxd; led(3) <= not apbuarto.txd; end generate; noua0 : if CFG_UART1_ENABLE = 0 generate apbo(1) <= apb_none; end generate; end Behavioral;