1 files changed, 114 insertions, 0 deletions
diff --git a/ice40/chipdb.py b/ice40/chipdb.py
new file mode 100644
index 00000000..eec7aad0
--- /dev/null
+++ b/ice40/chipdb.py
@@ -0,0 +1,114 @@
+#!/usr/bin/env python3
+
+import sys
+
+dev_name = None
+dev_width = None
+dev_height = None
+num_wires = None
+
+wire_uphill = dict()
+wire_downhill = dict()
+wire_bidir = dict()
+
+with open(sys.argv[1], "r") as f:
+    mode = None
+
+    for line in f:
+        line = line.split()
+
+        if len(line) == 0 or line[0] == "#":
+            continue
+
+        if line[0] == ".device":
+            dev_name = line[1]
+            dev_width = int(line[2])
+            dev_height = int(line[3])
+            num_wires = int(line[4])
+            continue
+
+        if line[0] == ".net":
+            mode = ("net", int(line[1]))
+            continue
+
+        if line[0] == ".buffer":
+            mode = ("buffer", int(line[3]))
+            continue
+
+        if line[0] == ".routing":
+            mode = ("routing", int(line[3]))
+            continue
+
+        if (line[0][0] == ".") or (mode is None):
+            mode = None
+            continue
+
+        if mode[0] == "net":
+            continue
+
+        if mode[0] == "buffer":
+            wire_a = int(line[1])
+            wire_b = mode[1]
+            if wire_a not in wire_downhill:
+                wire_downhill[wire_a] = set()
+            if wire_b not in wire_uphill:
+                wire_uphill[wire_b] = set()
+            wire_downhill[wire_a].add(wire_b)
+            wire_uphill[wire_b].add(wire_a)
+            continue
+
+        if mode[0] == "routing":
+            wire_a = int(line[1])
+            wire_b = mode[1]
+            if wire_a not in wire_bidir:
+                wire_bidir[wire_a] = set()
+            if wire_b not in wire_bidir:
+                wire_bidir[wire_b] = set()
+            wire_bidir[wire_a].add(wire_b)
+            wire_bidir[wire_b].add(wire_b)
+            continue
+
+print('#include "chip.h"')
+
+wireinfo = list()
+
+for wire in range(num_wires):
+    num_uphill = 0
+    num_downhill = 0
+    num_bidir = 0
+
+    has_bel_uphill = False
+    num_bels_downhill = 0
+
+    if wire in wire_uphill:
+        num_uphill = len(wire_uphill[wire])
+        print("static WireDelayPOD wire%d_uphill[] = {" % wire)
+        print(",\n".join(["  {%d, 1.0}" % other_wire for other_wire in wire_uphill[wire]]))
+        print("};")
+
+    if wire in wire_downhill:
+        num_downhill = len(wire_downhill[wire])
+        print("static WireDelayPOD wire%d_downhill[] = {" % wire)
+        print(",\n".join(["  {%d, 1.0}" % other_wire for other_wire in wire_downhill[wire]]))
+        print("};")
+
+    if wire in wire_bidir:
+        num_bidir = len(wire_bidir[wire])
+        print("static WireDelayPOD wire%d_bidir[] = {" % wire)
+        print(",\n".join(["  {%d, 1.0}" % other_wire for other_wire in wire_bidir[wire]]))
+        print("};")
+
+    info = "  {"
+    info += "\"wire%d\", " % wire
+    info += "%d, %d, %d, " % (num_uphill, num_downhill, num_bidir)
+    info += ("wire%d_uphill, " % wire) if num_uphill > 0 else "nullptr, "
+    info += ("wire%d_downhill, " % wire) if num_downhill > 0 else "nullptr, "
+    info += ("wire%d_bidir, " % wire) if num_bidir > 0 else "nullptr, "
+    info += "}"
+
+    wireinfo.append(info)
+
+print("extern WireInfo wire_data_%s[%d];" % (dev_name, num_wires))
+print("WireInfo wire_data_%s[%d] = {" % (dev_name, num_wires))
+print(",\n".join(wireinfo))
+print("};")