programmer: add USBBlaster and use platform.bitstream_ext in make

make.py

@@ -183,7 +183,7 @@ Subtarget: {}
 	if actions["load-bitstream"] or actions["flash-bitstream"] or actions["flash-bios"]:
 		prog = programmer.create_programmer(platform.name, args.flash_proxy_dir)
 		if actions["load-bitstream"]:
-			prog.load_bitstream("build/" + build_name + ".bit")
+			prog.load_bitstream("build/" + build_name + platform.bitstream_ext)
 		if actions["flash-bitstream"]:
 			if prog.needs_bitreverse:
 				flashbit = "build/" + build_name + ".fpg"

programmer.py

@@ -57,9 +57,20 @@ class XC3SProg(Programmer):
 		flash_proxy = self.find_flash_proxy("bscan_spi_lx9_papilio.bit")
 		subprocess.call(["xc3sprog", "-c", "papilio", "-I"+flash_proxy, "{}:w:0x{:x}:BIN".format(data_file, address)])
 
+class USBBlaster(Programmer):
+	needs_bitreverse = False
+
+	def load_bitstream(self, bitstream_file, port=0):
+		usb_port = "[USB-"+str(port)+"]"
+		subprocess.call(["quartus_pgm", "-m", "jtag", "-c", "USB-Blaster"+usb_port, "-o", "p;"+bitstream_file])
+
+	def flash(self, address, data_file):
+		raise NotImplementedError
+
 def create_programmer(platform_name, *args, **kwargs):
 	return {
 		"mixxeo":		UrJTAG,
 		"m1":			UrJTAG,
-		"papilio_pro":	XC3SProg
+		"papilio_pro":	XC3SProg,
+		"de0nano":		USBBlaster
 	}[platform_name](platform_name, *args, **kwargs)