Adds tie-offs to unused interrupts

platform/vc709/vc709.tcl

@@ -76,6 +76,8 @@ namespace eval platform {
 
     set irq_concat_ss [tapasco::createConcat "interrupt_concat" 8]
 
+    set irq_unused [tpc::createConstant "irq_unused" 1 0]
+
     # create MSIX interrupt controller
     set msix_intr_ctrl [tapasco::createMSIXIntrCtrl "msix_intr_ctrl"]
     connect_bd_net [get_bd_pin -of_objects $irq_concat_ss -filter {NAME == "dout"}] [get_bd_pin -of_objects $msix_intr_ctrl -filter {NAME == "interrupt"}]
@@ -98,6 +100,10 @@ namespace eval platform {
     connect_bd_net $msix_mask [get_bd_pin -of_objects $msix_intr_ctrl -filter {NAME == "cfg_interrupt_msix_mask"}]
 
     connect_bd_net $dma_irq [get_bd_pin -of_objects $irq_concat_ss -filter {NAME == "In0"}]
+    puts "Unused Interrupts: 1, 2, 3 are tied to 0"
+    connect_bd_net [get_bd_pin -of_object $irq_unused -filter {NAME == "dout"}] [get_bd_pin -of_objects $irq_concat_ss -filter {NAME == "In1"}]
+    connect_bd_net [get_bd_pin -of_object $irq_unused -filter {NAME == "dout"}] [get_bd_pin -of_objects $irq_concat_ss -filter {NAME == "In2"}]
+    connect_bd_net [get_bd_pin -of_object $irq_unused -filter {NAME == "dout"}] [get_bd_pin -of_objects $irq_concat_ss -filter {NAME == "In3"}]
 
     # connect internal clocks
     connect_bd_net -net intc_clock_net $aclk [get_bd_pins -of_objects [get_bd_cells] -filter {TYPE == "clk" && DIR == "I"}]