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authorPavel V. Shatov (Meister) <meisterpaul1@yandex.ru>2018-12-19 15:40:36 +0300
committerPavel V. Shatov (Meister) <meisterpaul1@yandex.ru>2018-12-19 15:40:36 +0300
commit4abd3ef0466dfbfe4b08488125375bccdd581d6a (patch)
tree9135d495924a2378dd101dcacb12a897cf33e603 /rtl/ecdsa384_banks_array.v
parent4b83a09434a1fe9b796c6c69388fc926c0794090 (diff)
Same changes as per the P-256 core.HEADmaster
Diffstat (limited to 'rtl/ecdsa384_banks_array.v')
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1 files changed, 118 insertions, 0 deletions
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+//------------------------------------------------------------------------------
+//
+// ecdsa384_banks_array.v
+// -----------------------------------------------------------------------------
+// ECDSA Operand Banks Array
+//
+// Authors: Pavel Shatov
+//
+// Copyright (c) 2018, 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 ecdsa384_banks_array
+(
+ input clk,
+
+ input banks, // 0: LO -> HI, 1: HI -> LO
+
+ input [ 5:0] src1_operand,
+ input [ 5:0] src2_operand,
+ input [ 5:0] dst_operand,
+
+ input [ 3:0] src1_addr,
+ input [ 3:0] src2_addr,
+ input [ 3:0] dst_addr,
+
+ input dst_wren,
+
+ output [31:0] src1_dout,
+ output [31:0] src2_dout,
+
+ input [31:0] dst_din
+);
+
+
+ //
+ // Banks
+ //
+ wire [31:0] bank_lo1_dout;
+ wire [31:0] bank_lo2_dout;
+ wire [31:0] bank_hi1_dout;
+ wire [31:0] bank_hi2_dout;
+
+ assign src1_dout = !banks ? bank_lo1_dout : bank_hi1_dout;
+ assign src2_dout = !banks ? bank_lo2_dout : bank_hi2_dout;
+
+ ecdsa384_operand_bank bank_operand_lo1
+ (
+ .clk (clk),
+ .a_addr ({dst_operand, dst_addr}),
+ .a_wr (dst_wren & banks),
+ .a_in (dst_din),
+ .b_addr ({src1_operand, src1_addr}),
+ .b_out (bank_lo1_dout)
+ );
+
+ ecdsa384_operand_bank bank_operand_lo2
+ (
+ .clk (clk),
+ .a_addr ({dst_operand, dst_addr}),
+ .a_wr (dst_wren & banks),
+ .a_in (dst_din),
+ .b_addr ({src2_operand, src2_addr}),
+ .b_out (bank_lo2_dout)
+ );
+
+ ecdsa384_operand_bank bank_operand_hi1
+ (
+ .clk (clk),
+ .a_addr ({dst_operand, dst_addr}),
+ .a_wr (dst_wren & ~banks),
+ .a_in (dst_din),
+ .b_addr ({src1_operand, src1_addr}),
+ .b_out (bank_hi1_dout)
+ );
+
+ ecdsa384_operand_bank bank_operand_hi2
+ (
+ .clk (clk),
+ .a_addr ({dst_operand, dst_addr}),
+ .a_wr (dst_wren & ~banks),
+ .a_in (dst_din),
+ .b_addr ({src2_operand, src2_addr}),
+ .b_out (bank_hi2_dout)
+ );
+
+endmodule
+
+
+//------------------------------------------------------------------------------
+// End-of-File
+//------------------------------------------------------------------------------