Pushing the bulk of UHD-3.7.0 code.

Original-commit: ff1546f8137f7f92bb250f685561b0c34cc0e053

lib/zpu/wishbone/zpu_system.vhd

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+-- ZPU
+--
+-- Copyright 2004-2008 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com
+-- 
+-- The FreeBSD license
+-- 
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions
+-- are met:
+-- 
+-- 1. Redistributions of source code must retain the above copyright
+--    notice, this list of conditions and the following disclaimer.
+-- 2. Redistributions in binary form must reproduce the above
+--    copyright notice, this list of conditions and the following
+--    disclaimer in the documentation and/or other materials
+--    provided with the distribution.
+-- 
+-- THIS SOFTWARE IS PROVIDED BY THE ZPU PROJECT ``AS IS'' AND ANY
+-- EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+-- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+-- ZPU PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+-- INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+-- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+-- STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+-- ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-- 
+-- The views and conclusions contained in the software and documentation
+-- are those of the authors and should not be interpreted as representing
+-- official policies, either expressed or implied, of the ZPU Project.
+
+library IEEE;
+use IEEE.STD_LOGIC_1164.all;
+use IEEE.STD_LOGIC_UNSIGNED.all; 
+
+library work;
+use work.zpu_top_pkg.all;
+use work.wishbone_pkg.all;
+use work.zpupkg.all;
+use work.zpu_config.all;
+
+entity zpu_system is
+	generic(
+			simulate		: boolean := false);
+	port (	areset			: in std_logic;
+			cpu_clk			: in std_logic;
+
+			-- ZPU Control signals
+			enable			: in std_logic;
+			interrupt		: in std_logic;
+
+			zpu_status		: out std_logic_vector(63 downto 0);
+
+			-- wishbone interfaces
+			zpu_wb_i		: in wishbone_bus_out;
+			zpu_wb_o		: out wishbone_bus_in);
+end zpu_system;
+
+architecture behave of zpu_system is
+
+signal	mem_req					: std_logic;
+signal	mem_we 					: std_logic;
+signal	mem_ack 				: std_logic; 
+signal	mem_read 				: std_logic_vector(wordSize-1 downto 0);
+signal	mem_write 				: std_logic_vector(wordSize-1 downto 0);
+signal	out_mem_addr 			: std_logic_vector(maxAddrBitIncIO downto 0);
+signal	mem_writeMask			: std_logic_vector(wordBytes-1 downto 0);
+
+
+begin
+
+	my_zpu_core:
+	zpu_core port map (
+    	clk 				=> cpu_clk, 
+		areset 				=> areset,
+	 	enable 				=> enable,
+	  	mem_req 			=> mem_req,
+	 	mem_we 				=> mem_we,
+	 	mem_ack 			=> mem_ack, 
+	 	mem_read 			=> mem_read,
+	 	mem_write 			=> mem_write,
+		out_mem_addr 		=> out_mem_addr,
+	 	mem_writeMask		=> mem_writeMask,
+	 	interrupt			=> interrupt,
+	 	zpu_status			=> zpu_status,
+	 	break				=> open);
+
+	my_zpu_wb_bridge:
+	zpu_wb_bridge port map (
+		clk 				=> cpu_clk,
+	 	areset 				=> areset,
+	  	mem_req 			=> mem_req,
+	 	mem_we 				=> mem_we,
+	 	mem_ack 			=> mem_ack, 
+	 	mem_read 			=> mem_read,
+	 	mem_write 			=> mem_write,
+		out_mem_addr 		=> out_mem_addr,
+	 	mem_writeMask		=> mem_writeMask,
+		zpu_wb_i			=> zpu_wb_i,
+		zpu_wb_o			=> zpu_wb_o);
+
+end behave;