Same changes as per the P-256 core.HEADmaster

1 files changed, 118 insertions, 0 deletions

diff --git a/rtl/ecdsa384_banks_array.v b/rtl/ecdsa384_banks_array.v
new file mode 100644
index 0000000..4b61dca
--- /dev/null
+++ b/rtl/ecdsa384_banks_array.v
@@ -0,0 +1,118 @@
+//------------------------------------------------------------------------------
+//
+// 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
+//------------------------------------------------------------------------------