diff options
| author | Pavel V. Shatov (Meister) <meisterpaul1@yandex.ru> | 2017-02-12 22:10:17 +0300 |
|---|---|---|
| committer | Pavel V. Shatov (Meister) <meisterpaul1@yandex.ru> | 2017-02-12 22:10:17 +0300 |
| commit | 747c165611c3016c997e092797bc20a4f900cdea (patch) | |
| tree | da11c5d240fc8a54ca37720d6a4ad863720e9c9e /rtl/lowlevel/artix7/adder32_artix7.v | |
Initial commit of base point multiplier core for ECDSA curve P-384.
Diffstat (limited to 'rtl/lowlevel/artix7/adder32_artix7.v')
| -rw-r--r-- | rtl/lowlevel/artix7/adder32_artix7.v | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/rtl/lowlevel/artix7/adder32_artix7.v b/rtl/lowlevel/artix7/adder32_artix7.v new file mode 100644 index 0000000..5f9ba79 --- /dev/null +++ b/rtl/lowlevel/artix7/adder32_artix7.v @@ -0,0 +1,96 @@ +//------------------------------------------------------------------------------ +// +// adder32_artix7.v +// ----------------------------------------------------------------------------- +// Hardware (Artix-7 DSP48E1) 32-bit adder.
+// +// Authors: Pavel Shatov +// +// Copyright (c) 2016, NORDUnet A/S +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// - Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// +// - 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. +// +// - Neither the name of the NORDUnet nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// 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 HOLDER 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 adder32_artix7
+ (
+ input clk, // clock
+ input [31: 0] a, // operand input
+ input [31: 0] b, // operand input
+ output [31: 0] s, // sum output
+ input c_in, // carry input
+ output c_out // carry output
+ );
+
+ //
+ // Lower and higher parts of operand
+ //
+ wire [17: 0] bl = b[17: 0];
+ wire [13: 0] bh = b[31:18];
+
+
+ //
+ // DSP48E1 Slice
+ //
+
+ /* Operation Mode */
+ wire [ 3: 0] dsp48e1_alumode = 4'b0000;
+ wire [ 6: 0] dsp48e1_opmode = 7'b0110011;
+
+ /* Internal Product */
+ wire [47: 0] p_int;
+
+ dsp48e1_wrapper dsp_adder
+ (
+ .clk (clk),
+
+ .ce (1'b1),
+
+ .carry (c_in),
+
+ .alumode (dsp48e1_alumode),
+ .opmode (dsp48e1_opmode),
+
+ .a ({{16{1'b0}}, bh}),
+ .b (bl),
+ .c ({{16{1'b0}}, a}),
+
+ .p (p_int)
+ );
+
+ //
+ // Output Mapping
+ //
+ assign s = p_int[31: 0];
+ assign c_out = p_int[32];
+
+
+endmodule
+
+//------------------------------------------------------------------------------ +// End-of-File +//------------------------------------------------------------------------------
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