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authorJoachim StroĢˆmbergson <joachim@secworks.se>2014-03-13 16:25:20 +0100
committerJoachim StroĢˆmbergson <joachim@secworks.se>2014-03-13 16:25:20 +0100
commit6f6ab179f5c2c0f1e74515b38f44b3f1c44a7d3d (patch)
treecfa8509c057da67aa5e9667bab8480e1094b383b /src
parente19e830d557101653e1a1fdf2791b9f996cdfde4 (diff)
Adding RTL to build the coretest_hashes subsystem with SHA-1 and SHA-256 cores.
Diffstat (limited to 'src')
-rw-r--r--src/rtl/coretest_hashes.v272
1 files changed, 272 insertions, 0 deletions
diff --git a/src/rtl/coretest_hashes.v b/src/rtl/coretest_hashes.v
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+//======================================================================
+//
+// coretest_hashes.v
+// -----------------
+// Top level wrapper that creates the Cryptech coretest system.
+// The wrapper contains instances of external interface, coretest
+// and the core to be tested. And if more than one core is
+// present the wrapper also includes address and data muxes.
+//
+//
+// Author: Joachim Strombergson
+// Copyright (c) 2014 SUNET
+// All rights reserved.
+//
+// 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "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
+// COPYRIGHT OWNER 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.
+//
+//======================================================================
+
+module coretest_hashes(
+ input wire clk,
+ input wire reset_n,
+
+ // External interface.
+ input wire rxd,
+ output wire txd,
+
+ output wire [7 : 0] debug
+ );
+
+
+ //----------------------------------------------------------------
+ // Internal constant and parameter definitions.
+ //----------------------------------------------------------------
+ parameter UART_ADDR_PREFIX = 8'h00;
+ parameter SHA1_ADDR_PREFIX = 8'h10;
+ parameter SHA256_ADDR_PREFIX = 8'h20;
+
+
+ //----------------------------------------------------------------
+ // Wires.
+ //----------------------------------------------------------------
+ // Coretest connections.
+ wire coretest_reset_n;
+ wire coretest_cs;
+ wire coretest_we;
+ wire [15 : 0] coretest_address;
+ wire [31 : 0] coretest_write_data;
+ reg [31 : 0] coretest_read_data;
+ reg coretest_error;
+
+ // uart connections
+ wire uart_rxd_syn;
+ wire [7 : 0] uart_rxd_data;
+ wire uart_rxd_ack;
+ wire uart_txd_syn;
+ wire [7 : 0] uart_txd_data;
+ wire uart_txd_ack;
+ reg uart_cs;
+ reg uart_we;
+ reg [3 : 0] uart_address;
+ reg [31 : 0] uart_write_data;
+ wire [31 : 0] uart_read_data;
+ wire uart_error;
+ wire [7 : 0] uart_debug;
+
+ // sha1 connections.
+ reg sha1_cs;
+ reg sha1_we;
+ reg [7 : 0] sha1_address;
+ reg [31 : 0] sha1_write_data;
+ wire [31 : 0] sha1_read_data;
+ wire sha1_error;
+ wire [7 : 0] sha1_debug;
+
+ // sha256 connections.
+ reg sha256_cs;
+ reg sha256_we;
+ reg [7 : 0] sha256_address;
+ reg [31 : 0] sha256_write_data;
+ wire [31 : 0] sha256_read_data;
+ wire sha256_error;
+ wire [7 : 0] sha256_debug;
+
+
+ //----------------------------------------------------------------
+ // Concurrent assignment.
+ //----------------------------------------------------------------
+ assign debug = uart_debug;
+
+
+ //----------------------------------------------------------------
+ // Core instantiations.
+ //----------------------------------------------------------------
+ coretest coretest(
+ .clk(clk),
+ .reset_n(reset_n),
+
+ .rx_syn(uart_rxd_syn),
+ .rx_data(uart_rxd_data),
+ .rx_ack(uart_rxd_ack),
+
+ .tx_syn(uart_txd_syn),
+ .tx_data(uart_txd_data),
+ .tx_ack(uart_txd_ack),
+
+ // Interface to the core being tested.
+ .core_reset_n(coretest_reset_n),
+ .core_cs(coretest_cs),
+ .core_we(coretest_we),
+ .core_address(coretest_address),
+ .core_write_data(coretest_write_data),
+ .core_read_data(coretest_read_data),
+ .core_error(coretest_error)
+ );
+
+
+ uart uart(
+ .clk(clk),
+ .reset_n(reset_n),
+
+ .rxd(rxd),
+ .txd(txd),
+
+ .rxd_syn(uart_rxd_syn),
+ .rxd_data(uart_rxd_data),
+ .rxd_ack(uart_rxd_ack),
+
+ .txd_syn(uart_txd_syn),
+ .txd_data(uart_txd_data),
+ .txd_ack(uart_txd_ack),
+
+ .cs(uart_cs),
+ .we(uart_we),
+ .address(uart_address),
+ .write_data(uart_write_data),
+ .read_data(uart_read_data),
+ .error(uart_error),
+
+ .debug(uart_debug)
+ );
+
+
+ sha1 sha1(
+ // Clock and reset.
+ .clk(clk),
+ .reset_n(reset_n),
+
+ // Control.
+ .cs(sha1_cs),
+ .we(sha1_we),
+
+ // Data ports.
+ .address(sha1_address),
+ .write_data(sha1_write_data),
+ .read_data(sha1_read_data),
+ .error(sha1_error)
+ );
+
+
+ sha256 sha256(
+ // Clock and reset.
+ .clk(clk),
+ .reset_n(reset_n),
+
+ // Control.
+ .cs(sha256_cs),
+ .we(sha256_we),
+
+ // Data ports.
+ .address(sha256_address),
+ .write_data(sha256_write_data),
+ .read_data(sha256_read_data),
+ .error(sha256_error)
+ );
+
+
+ //----------------------------------------------------------------
+ // address_mux
+ //
+ // Combinational data mux that handles addressing between
+ // cores using the 32-bit memory like interface.
+ //----------------------------------------------------------------
+ always @*
+ begin : address_mux
+ // Default assignments.
+ coretest_read_data = 32'h00000000;
+ coretest_error = 0;
+
+ uart_cs = 0;
+ uart_we = 0;
+ uart_address = 4'h0;
+ uart_write_data = 32'h00000000;
+
+ sha1_cs = 0;
+ sha1_we = 0;
+ sha1_address = 8'h00;
+ sha1_write_data = 32'h00000000;
+
+ sha256_cs = 0;
+ sha256_we = 0;
+ sha256_address = 8'h00;
+ sha256_write_data = 32'h00000000;
+
+
+ case (coretest_address[15 : 8])
+ UART_ADDR_PREFIX:
+ begin
+ uart_cs = coretest_cs;
+ uart_we = coretest_we;
+ uart_address = coretest_address[3 : 0];
+ uart_write_data = coretest_write_data;
+ coretest_read_data = uart_read_data;
+ coretest_error = uart_error;
+ end
+
+
+ SHA1_ADDR_PREFIX:
+ begin
+ sha1_cs = coretest_cs;
+ sha1_we = coretest_we;
+ sha1_address = coretest_address[7 : 0];
+ sha1_write_data = coretest_write_data;
+ coretest_read_data = sha1_read_data;
+ coretest_error = sha1_error;
+ end
+
+
+ SHA256_ADDR_PREFIX:
+ begin
+ sha256_cs = coretest_cs;
+ sha256_we = coretest_we;
+ sha256_address = coretest_address[7 : 0];
+ sha256_write_data = coretest_write_data;
+ coretest_read_data = sha256_read_data;
+ coretest_error = sha256_error;
+ end
+
+
+ default:
+ begin
+ end
+ endcase // case (coretest_address[15 : 8])
+ end // address_mux
+
+endmodule // coretest_hashes
+
+//======================================================================
+// EOF coretest_hashes.v
+//======================================================================