Debug and fixes

* Change the External data path on GT wizard settings
* tie the loopback to top level
* bring the usrclk2 out to the top level

hdl/top_comcellnode.vhd

@@ -19,6 +19,9 @@ entity top_comcellnode is
         rx_data_rst                        : in std_logic;
         tx_rst                             : in std_logic;
         rx_rst                             : in std_logic;
+        gt_loopback                        : in std_logic_vector(2 downto 0);
+        gt_rx_out_clk                      : out std_logic;
+        gt_tx_out_clk                      : out std_logic;
 
         -- SFP signals
         sfp_rxn                            : in std_logic;
@@ -326,6 +329,9 @@ architecture struct of top_comcellnode is
 
 begin
 
+    gt_rx_out_clk <= rxusrclk2;
+    gt_tx_out_clk <= main_clk;
+
     rst <= not rst_n;
 
     sfp_tx_disable  <= '0';
@@ -345,7 +351,7 @@ begin
         gtwiz_reset_tx_done_out(0)         => gtwiz_tx_rst_done,
         gtwiz_reset_rx_done_out(0)         => gtwiz_rx_rst_done,
         gtwiz_reset_tx_datapath_in(0)      => gtwiz_rst_tx_datapath,
-        gtwiz_reset_rx_datapath_in         => gtwiz_rst_rx_datapath,
+        gtwiz_reset_rx_datapath_in(0)      => gtwiz_rst_rx_datapath,
 
         -- Clocks
         gtwiz_userclk_rx_usrclk2_out(0)    => rxusrclk2,
@@ -376,9 +382,10 @@ begin
         txheader_in                        => txheader,
 
         -- GT
-        loopback_in(0)                     => '0',
-        loopback_in(1)                     => gtloopback,
-        loopback_in(2)                     => '0',
+        loopback_in                        => gt_loopback,
+        --loopback_in(0)                     => '0',
+        --loopback_in(1)                     => gtloopback,
+        --loopback_in(2)                     => '0',
 
         -- Status
         gtwiz_userclk_tx_active_out(0)     => tx_clk_active,

tcl/generate_ethernet.tcl

@@ -42,6 +42,8 @@ set_property -dict [list \
     CONFIG.LOCATE_RX_USER_CLOCKING {CORE} \
     CONFIG.LOCATE_RESET_CONTROLLER {CORE} \
     CONFIG.LOCATE_USER_DATA_WIDTH_SIZING {EXAMPLE_DESIGN} \
+    CONFIG.RX_USER_DATA_WIDTH 64 \
+    CONFIG.TX_USER_DATA_WIDTH 64 \
     CONFIG.ENABLE_OPTIONAL_PORTS {loopback_in} \
     ] [get_ips comcellnode_gtwizard]