Create dmi_wrapper.v

src/main/resources/vsrc/dmi_wrapper.v

@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2018 Western Digital Corporation or it's affiliates.
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// 
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//------------------------------------------------------------------------------------
+//
+//  Copyright Western Digital, 2018
+//  Owner : Anusha Narayanamoorthy
+//  Description:  
+//                Wrapper module for JTAG_TAP and DMI synchronizer
+//
+//-------------------------------------------------------------------------------------
+
+module dmi_wrapper(
+
+  // JTAG signals
+  input              trst_n,              // JTAG reset
+  input              tck,                 // JTAG clock
+  input              tms,                 // Test mode select   
+  input              tdi,                 // Test Data Input
+  output             tdo,                 // Test Data Output           
+  output             tdoEnable,           // Test Data Output enable             
+
+  // Processor Signals
+  input              core_rst_n,          // Core reset                  
+  input              core_clk,            // Core clock                  
+  input [31:1]       jtag_id,             // JTAG ID
+  input [31:0]       rd_data,             // 32 bit Read data from  Processor                       
+  output [31:0]      reg_wr_data,         // 32 bit Write data to Processor                      
+  output [6:0]       reg_wr_addr,         // 7 bit reg address to Processor                   
+  output             reg_en,              // 1 bit  Read enable to Processor                                    
+  output             reg_wr_en,           // 1 bit  Write enable to Processor 
+  output             dmi_hard_reset  
+);
+
+
+  
+
+
+  //Wire Declaration
+  wire                     rd_en;
+  wire                     wr_en;
+  wire                     dmireset;
+
+ 
+  //jtag_tap instantiation
+ rvjtag_tap i_jtag_tap(
+   .trst(trst_n),                      // dedicated JTAG TRST (active low) pad signal or asynchronous active low power on reset
+   .tck(tck),                          // dedicated JTAG TCK pad signal
+   .tms(tms),                          // dedicated JTAG TMS pad signal
+   .tdi(tdi),                          // dedicated JTAG TDI pad signal
+   .tdo(tdo),                          // dedicated JTAG TDO pad signal
+   .tdoEnable(tdoEnable),              // enable for TDO pad
+   .wr_data(reg_wr_data),              // 32 bit Write data
+   .wr_addr(reg_wr_addr),              // 7 bit Write address
+   .rd_en(rd_en),                      // 1 bit  read enable
+   .wr_en(wr_en),                      // 1 bit  Write enable
+   .rd_data(rd_data),                  // 32 bit Read data
+   .rd_status(2'b0),
+   .idle(3'h0),                         // no need to wait to sample data
+   .dmi_stat(2'b0),                     // no need to wait or error possible
+   .version(4'h1),                      // debug spec 0.13 compliant
+   .jtag_id(jtag_id),
+   .dmi_hard_reset(dmi_hard_reset),
+   .dmi_reset(dmireset)
+);
+
+
+  // dmi_jtag_to_core_sync instantiation
+  dmi_jtag_to_core_sync i_dmi_jtag_to_core_sync(
+    .wr_en(wr_en),                          // 1 bit  Write enable
+    .rd_en(rd_en),                          // 1 bit  Read enable
+
+    .rst_n(core_rst_n),
+    .clk(core_clk),
+    .reg_en(reg_en),                          // 1 bit  Write interface bit
+    .reg_wr_en(reg_wr_en)                          // 1 bit  Write enable
+  );
+
+endmodule