add FPGA xdc file

Signed-off-by: liangkangnan <liangkangnan@163.com>

FPGA/constrs/tinyriscv.xdc

@@ -0,0 +1,38 @@
+set_property -dict { PACKAGE_PIN N14 IOSTANDARD LVCMOS33 } [get_ports {clk}]; 
+create_clock -add -name sys_clk_pin -period 20.00 -waveform {0 10} [get_ports {clk}];
+
+set_property IOSTANDARD LVCMOS33 [get_ports clk]
+set_property PACKAGE_PIN N14 [get_ports clk]
+
+set_property IOSTANDARD LVCMOS33 [get_ports rst]
+set_property PACKAGE_PIN L13 [get_ports rst]
+
+set_property IOSTANDARD LVCMOS33 [get_ports over]
+set_property PACKAGE_PIN M16 [get_ports over]
+
+set_property IOSTANDARD LVCMOS33 [get_ports succ]
+set_property PACKAGE_PIN N16 [get_ports succ]
+
+set_property IOSTANDARD LVCMOS33 [get_ports halted_ind]
+set_property PACKAGE_PIN P15 [get_ports halted_ind]
+
+set_property IOSTANDARD LVCMOS33 [get_ports tx_pin]
+set_property PACKAGE_PIN M6 [get_ports tx_pin]
+
+set_property IOSTANDARD LVCMOS33 [get_ports io_pin]
+set_property PACKAGE_PIN P16 [get_ports io_pin]
+
+# JTAG pin
+set_property IOSTANDARD LVCMOS33 [get_ports jtag_TCK]
+set_property PACKAGE_PIN N11 [get_ports jtag_TCK]
+
+create_clock -name jtag_clk_pin -period 300 [get_ports {jtag_TCK}];
+
+set_property IOSTANDARD LVCMOS33 [get_ports jtag_TMS]
+set_property PACKAGE_PIN N3 [get_ports jtag_TMS]
+
+set_property IOSTANDARD LVCMOS33 [get_ports jtag_TDI]
+set_property PACKAGE_PIN N2 [get_ports jtag_TDI]
+
+set_property IOSTANDARD LVCMOS33 [get_ports jtag_TDO]
+set_property PACKAGE_PIN M1 [get_ports jtag_TDO]