write arty SoC generator

arty_test/soc.py

@@ -0,0 +1,38 @@
+# Construct SoC.
+
+from migen import ClockSignal
+from litex_boards.targets.digilent_arty import BaseSoC
+from litex_boards.platforms.digilent_arty import Platform, Builder
+from litescope import LiteScopeAnalyzer
+
+platform = Platform(variant="a7-100")
+platform.add_source("../boothmul.v")
+
+class TestPlatform(BaseSoC):
+	def __init__(self, platform, constwid = 48, inwid = 48):
+		BaseSoC.__init__(
+			with_uartbone = True,
+			toolchain = "symbiflow",
+			platform = platform
+		)
+
+	self.const_in = CSRStorage(constwid)
+	self.inval = CSRStorage(inwid)
+	self.outval = CSRStatus(const_wid + inwid)
+	self.arm = CSRStorage(arm)
+	self.fin = CSRStatus(arm)
+
+	self.specials += Instance("boothmul",
+		p_A1_LEN = constwid,
+		p_A2_LEN = inwid,
+		A2LEN_SIZ = math.ceil(math.log2(inwid) + 1) + 1,
+		clk = ClockSignal(),
+		a1 = self.const_in.storage,
+		a2 = self.inval.storage,
+		outn = self.outval.status,
+		i_arm = self.arm.storage,
+		fin = self.fin.status
+	)
+
+builder = Builder(TestPlatform(platform), csr_csv="csr.csv")
+builder.build()