Subversion Repositories mips_enhanced

------------------------------------------------------------------------------

--  This file is a part of the GRLIB VHDL IP LIBRARY

--  Copyright (C) 2003, 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 

-----------------------------------------------------------------------------   

-- Entity:      ahbuart

-- File:        ahbuart.vhd

-- Author:      Jiri Gaisler - Gaisler Research

-- Description: UART with AHB master interface

------------------------------------------------------------------------------  

library ieee;

use ieee.std_logic_1164.all;

library grlib;

use grlib.amba.all;

use grlib.stdlib.all;

use grlib.devices.all;

library gaisler;

use gaisler.misc.all;

use gaisler.uart.all;

use gaisler.libdcom.all;

entity ahbuart is

  generic (

    hindex  : integer := 0;

    pindex  : integer := 0;

    paddr : integer := 0;

    pmask : integer := 16#fff#

  );

  port (

    rst     : in  std_ulogic;

    clk     : in  std_ulogic;

    uarti   : in  uart_in_type;

    uarto   : out uart_out_type;

    apbi    : in  apb_slv_in_type;

    apbo    : out apb_slv_out_type;

    ahbi    : in  ahb_mst_in_type;

    ahbo    : out ahb_mst_out_type );

end;

architecture struct of ahbuart is

constant REVISION : integer := 0;

signal dmai : ahb_dma_in_type;

signal dmao : ahb_dma_out_type;

signal duarti : dcom_uart_in_type;

signal duarto : dcom_uart_out_type;

begin

  ahbmst0 : ahbmst

    generic map (hindex => hindex, venid => VENDOR_GAISLER, devid => GAISLER_AHBUART)

    port map (rst, clk, dmai, dmao, ahbi, ahbo);

  dcom_uart0 : dcom_uart generic map (pindex, paddr, pmask)

    port map (rst, clk, uarti, uarto, apbi, apbo, duarti, duarto);

  dcom0 : dcom port map (rst, clk, dmai, dmao, duarti, duarto, ahbi);

-- pragma translate_off

    bootmsg : report_version

    generic map ("ahbuart" & tost(pindex) &

        ": AHB Debug UART rev " & tost(REVISION));

-- pragma translate_on

end;