diff options
Diffstat (limited to 'rtl/ecdsa256_banks_array.v')
| -rw-r--r-- | rtl/ecdsa256_banks_array.v | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/rtl/ecdsa256_banks_array.v b/rtl/ecdsa256_banks_array.v new file mode 100644 index 0000000..1172429 --- /dev/null +++ b/rtl/ecdsa256_banks_array.v @@ -0,0 +1,119 @@ +//------------------------------------------------------------------------------ +// +// ecdsa256_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 ecdsa256_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 [ 2:0] src1_addr, + input [ 2:0] src2_addr, + input [ 2:0] 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; + + ecdsa256_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) + ); + + ecdsa256_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) + ); + + ecdsa256_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) + ); + + ecdsa256_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 +//------------------------------------------------------------------------------ |