Added openocd config and scripts to make uploading and programming easier

openocd.cfg

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+#
+# Numato Mimas A7 Mini - Artix 7 FPGA Board
+#
+# https://numato.com/product/mimas-a7-mini-fpga-development-board
+#
+
+interface ftdi
+ftdi_device_desc "Mimas A7 Mini FPGA Module"
+ftdi_vid_pid 0x2a19 0x100e
+
+# channel 0 is for custom purpose by users (like uart, fifo etc)
+# channel 1 is reserved for JTAG (by-default) or SPI (possible via changing solder jumpers)
+ftdi_channel 1
+ftdi_tdo_sample_edge falling
+
+
+# FTDI Pin Layout
+#
+# +--------+-------+-------+-------+-------+-------+-------+-------+
+# | DBUS7  | DBUS6 | DBUS5 | DBUS4 | DBUS3 | DBUS2 | DBUS1 | DBUS0 |
+# +--------+-------+-------+-------+-------+-------+-------+-------+
+# | PROG_B | OE_N  |  NC   |  NC   |  TMS  |  TDO  |  TDI  |  TCK  |
+# +--------+-------+-------+-------+-------+-------+-------+-------+
+#
+# OE_N is JTAG buffer output enable signal (active-low)
+# PROG_B is not used, so left as input to FTDI.
+#
+ftdi_layout_init 0x0008 0x004b
+reset_config none
+adapter_khz 30000
+
+source [find cpld/xilinx-xc7.cfg]
+source [find cpld/jtagspi.cfg]
+
+proc fpga_program {} {
+    global _CHIPNAME
+    xc7_program $_CHIPNAME.tap
+}

program.sh

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+#!/bin/bash
+sudo openocd -f openocd.cfg -c "init" -c "jtagspi_init 0 bscan_spi_xc7a35t.bit" -c "jtagspi_program .build/impl.bin 0x0" -c "fpga_program" -c "shutdown"

upload.sh

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+#!/bin/bash
+sudo openocd -f openocd.cfg -c "init" -c "pld load 0 .build/impl.bit" -c "shutdown"