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debug: optimization for jtag 

Signed-off-by: liangkangnan <liangkangnan@163.com>
pull/1/head
liangkangnan 2020-05-13 21:27:40 +08:00
parent 260246f488
commit 834fcfb3ef
1 changed files with 12 additions and 25 deletions
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37
rtl/debug/jtag_top.v
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@ -30,14 +30,14 @@ module jtag_top(
output wire jtag_pin_TDO,
output reg reg_we_o,
output reg[4:0] reg_addr_o,
output reg[31:0] reg_wdata_o,
output wire[4:0] reg_addr_o,
output wire[31:0] reg_wdata_o,
input wire[31:0] reg_rdata_i,
output reg mem_we_o,
output reg[31:0] mem_addr_o,
output reg[31:0] mem_wdata_o,
output wire[31:0] mem_addr_o,
output wire[31:0] mem_wdata_o,
input wire[31:0] mem_rdata_i,
output reg op_req_o,
output wire op_req_o,
output reg halt_req_o,
output reg reset_req_o
@ -78,26 +78,23 @@ module jtag_top(
reg tmp_reset_req_o;
assign reg_addr_o = dm_reg_addr_o;
assign reg_wdata_o = dm_reg_wdata_o;
assign mem_addr_o = dm_mem_addr_o;
assign mem_wdata_o = dm_mem_wdata_o;
assign op_req_o = dm_op_req_o;
// 打第一拍
always @ (posedge clk) begin
if (!jtag_rst_n) begin
tmp_reg_we_o <= `WriteDisable;
tmp_reg_addr_o <= `ZeroReg;
tmp_reg_wdata_o <= `ZeroWord;
tmp_mem_we_o <= `WriteDisable;
tmp_mem_addr_o <= `ZeroWord;
tmp_mem_wdata_o <= `ZeroWord;
tmp_op_req_o <= 1'b0;
tmp_halt_req_o <= 1'b0;
tmp_reset_req_o <= 1'b0;
end else begin
tmp_reg_we_o <= dm_reg_we_o;
tmp_reg_addr_o <= dm_reg_addr_o;
tmp_reg_wdata_o <= dm_reg_wdata_o;
tmp_mem_we_o <= dm_mem_we_o;
tmp_mem_addr_o <= dm_mem_addr_o;
tmp_mem_wdata_o <= dm_mem_wdata_o;
tmp_op_req_o <= dm_op_req_o;
tmp_halt_req_o <= dm_halt_req_o;
tmp_reset_req_o <= dm_reset_req_o;
end
@ -107,22 +104,12 @@ module jtag_top(
always @ (posedge clk) begin
if (!jtag_rst_n) begin
reg_we_o <= `WriteDisable;
reg_addr_o <= `ZeroReg;
reg_wdata_o <= `ZeroWord;
mem_we_o <= `WriteDisable;
mem_addr_o <= `ZeroWord;
mem_wdata_o <= `ZeroWord;
op_req_o <= 1'b0;
halt_req_o <= 1'b0;
reset_req_o <= 1'b0;
end else begin
reg_we_o <= tmp_reg_we_o;
reg_addr_o <= tmp_reg_addr_o;
reg_wdata_o <= tmp_reg_wdata_o;
mem_we_o <= tmp_mem_we_o;
mem_addr_o <= tmp_mem_addr_o;
mem_wdata_o <= tmp_mem_wdata_o;
op_req_o <= tmp_op_req_o;
halt_req_o <= tmp_halt_req_o;
reset_req_o <= tmp_reset_req_o;
end