target/sim: Add JTAG tasks to read/write 64b and 32b registers

pulp-platform · Feb 14, 2024 · 67f0e7f · 67f0e7f
1 parent d52b755
commit 67f0e7f
Showing 1 changed file with 65 additions and 0 deletions.
diff --git a/target/sim/src/vip_cheshire_soc.sv b/target/sim/src/vip_cheshire_soc.sv
@@ -256,6 +256,71 @@ module vip_cheshire_soc import cheshire_pkg::*; #(
     $display("[JTAG] Initialization success");
   endtask
 
+  task automatic jtag_write_reg32(input logic [31:0] start_addr, logic [63:0] value);
+    logic [31:0]      rdata;
+
+    automatic dm::sbcs_t sbcs = dm::sbcs_t'{sbreadonaddr: 1'b1, sbaccess: 2, default: '0};
+
+    $display("[JTAG] Start writing at %x ", start_addr);
+    jtag_write(dm::SBCS, sbcs, 0, 1);
+
+    // Write address
+    $display("[JTAG] Start writing address");
+    jtag_write(dm::SBAddress1, 'h0);
+    jtag_write(dm::SBAddress0, start_addr);
+
+    // Write data
+    $display("[JTAG] Start writing data");
+    jtag_write(dm::SBData0, value[31:0]);
+
+  endtask
+
+  task automatic jtag_read_reg32(
+    input logic [31:0] addr,
+    output logic [31:0] data,
+    input int unsigned idle_cycles
+  );
+    automatic dm::sbcs_t sbcs = dm::sbcs_t'{sbreadonaddr: 1'b1, sbaccess: 2, default: '0};
+    jtag_write(dm::SBCS, sbcs, 0, 1);
+    jtag_write(dm::SBAddress1, 'h0);
+    jtag_write(dm::SBAddress0, addr[31:0]);
+    jtag_dbg.wait_idle(idle_cycles);
+    jtag_dbg.read_dmi_exp_backoff(dm::SBData0, data);
+  endtask
+
+  task automatic jtag_write_reg(input logic [31:0] start_addr, input doub_bt value);
+    logic [63:0]      rdata;
+
+    $display("[JTAG] Start writing at %x ", start_addr);
+    jtag_write(dm::SBCS, JtagInitSbcs, 1, 1);
+    // Write address
+    jtag_write(dm::SBAddress0, start_addr);
+    // Write data
+    jtag_write(dm::SBData1, value[63:32]);
+    jtag_write(dm::SBData0, value[31:0]);
+
+    //Check correctess
+    jtag_read_reg(start_addr, rdata, 20);
+    if(rdata!=value) begin
+      $fatal(1,"rdata at %x: %x" , start_addr, rdata);
+    end else begin
+      $display("W/R sanity check at %x ok! : %x", start_addr, rdata);
+    end
+  endtask
+
+  task automatic jtag_read_reg(
+    input doub_bt addr,
+    output word_bt data,
+    input int unsigned idle_cycles
+  );
+    automatic dm::sbcs_t sbcs = dm::sbcs_t'{sbreadonaddr: 1'b1, sbaccess: 2, default: '0};
+    jtag_write(dm::SBCS, sbcs, 0, 1);
+    jtag_write(dm::SBAddress1, addr[63:32]);
+    jtag_write(dm::SBAddress0, addr[31:0]);
+    jtag_dbg.wait_idle(idle_cycles);
+    jtag_dbg.read_dmi_exp_backoff(dm::SBData0, data);
+  endtask
+
   // Load a binary
   task automatic jtag_elf_preload(input string binary, output doub_bt entry);
     longint sec_addr, sec_len;