removed NDA spice file, fixed tech json generation scripts (#740)

hammer/technology/sky130/extra/sky130-tech-gen-files/beginning.json

@@ -4,18 +4,14 @@
   "time_unit": "1 ns",
   "installs": [
     {
-      "path": "$SKY130A",
-      "base var": "technology.sky130.sky130A"
-    },
-    {
-      "path": "tech-sky130-cache",
-      "base var": ""
+      "id": "$SKY130A",
+      "path": "technology.sky130.sky130A"
     }
   ],
   "libraries": [
     {
-      "lef file": "tech-sky130-cache/sky130_fd_sc_hd.tlef",
-      "verilog sim": "tech-sky130-cache/primitives.v",
+      "lef_file": "tech-sky130-cache/sky130_fd_sc_hd__nom.tlef",
+      "verilog_sim": "tech-sky130-cache/primitives.v",
       "provides": [
         {
           "lib_type": "technology"

hammer/technology/sky130/extra/sky130-tech-gen-files/beginning_nda.json

@@ -4,41 +4,36 @@
   "time_unit": "1 ns",
   "installs": [
     {
-      "path": "$SKY130_NDA",
-      "base var": "technology.sky130.sky130_nda"
+      "id": "$SKY130_NDA",
+      "path": "technology.sky130.sky130_nda"
     },
     {
-      "path": "$SKY130A",
-      "base var": "technology.sky130.sky130A"
-    },
-    {
-      "path": "tech-sky130-cache",
-      "base var": ""
+      "id": "$SKY130A",
+      "path": "technology.sky130.sky130A"
     }
   ],
-  "layer map file": "$SKY130_NDA/s8/V2.0.1/VirtuosoOA/libs/technology_library/technology_library.layermap",
-  "drc decks": [
+  "layer_map_file": "$SKY130_NDA/s8/V2.0.1/VirtuosoOA/libs/technology_library/technology_library.layermap",
+  "drc_decks": [
     {
-      "tool name": "calibre",
-      "deck name": "all_drc",
+      "tool_name": "calibre",
+      "deck_name": "all_drc",
       "path": "$SKY130_NDA/s8/V2.0.1/DRC/Calibre/s8_drcRules"
     }
   ],
   "additional_drc_text": "",
-  "lvs decks": [
+  "lvs_decks": [
     {
-      "tool name": "calibre",
-      "deck name": "all_lvs",
-      "old path": "$SKY130_NDA/s8/V2.0.1/LVS/Calibre/lvsRules_s8",
-      "path": "tech-sky130-cache/lvsControlFile_s8"
+      "tool_name": "calibre",
+      "deck_name": "all_lvs",
+      "old_path": "$SKY130_NDA/s8/V2.0.1/LVS/Calibre/lvsRules_s8",
+      "path": "cache/lvsControlFile_s8"
     }
   ],
   "additional_lvs_text": "",
   "libraries": [
     {
-      "lef file": "tech-sky130-cache/sky130_fd_sc_hd.tlef",
-      "spice file": "$SKY130_NDA/s8/V2.0.1/LVS/Calibre/source.cdl",
-      "verilog sim": "tech-sky130-cache/primitives.v",
+      "lef_file": "cache/sky130_fd_sc_hd__nom.tlef",
+      "verilog_sim": "cache/primitives.v",
       "provides": [
         {
           "lib_type": "technology"

hammer/technology/sky130/extra/sky130-tech-gen-files/cells.json

@@ -1,18 +1,54 @@
 {
-  "physical only cells list": [
+  "physical_only_cells_list": [
     "sky130_fd_sc_hd__tap_1", "sky130_fd_sc_hd__tap_2", "sky130_fd_sc_hd__tapvgnd_1", "sky130_fd_sc_hd__tapvpwrvgnd_1",
     "sky130_fd_sc_hd__fill_1", "sky130_fd_sc_hd__fill_2", "sky130_fd_sc_hd__fill_4", "sky130_fd_sc_hd__fill_8", 
     "sky130_fd_sc_hd__diode_2"
   ],
-  "dont use list": [
+  "dont_use_list": [
     "*sdf*",
-    "sky130_fd_sc_hd__probe_p_8"
+    "sky130_fd_sc_hd__probe_p_*",
+    "sky130_fd_sc_hd__probec_p_*"
   ],
-  "special cells": [
-    {"cell_type": "tiehilocell",    "name": ["sky130_fd_sc_hd__conb_1"]},
-    {"cell_type": "endcap",         "name": ["sky130_fd_sc_hd__tap_1"]},
-    {"cell_type": "tapcell",        "name": ["sky130_fd_sc_hd__tapvpwrvgnd_1"]},
-    {"cell_type": "stdfiller",      "name": ["sky130_fd_sc_hd__fill_1", "sky130_fd_sc_hd__fill_2", "sky130_fd_sc_hd__fill_4", "sky130_fd_sc_hd__fill_8"]},
-    {"cell_type": "decap",          "name": ["sky130_fd_sc_hd__decap_3", "sky130_fd_sc_hd__decap_4", "sky130_fd_sc_hd__decap_6", "sky130_fd_sc_hd__decap_8", "sky130_fd_sc_hd__decap_12"]}    
+  "special_cells": [
+    {
+      "cell_type": "tiehilocell",    
+      "name": ["sky130_fd_sc_hd__conb_1"]
+    },
+    {
+      "cell_type": "tiehicell",      
+      "name": ["sky130_fd_sc_hd__conb_1"],
+      "output_ports": ["HI"]
+    },
+    {
+      "cell_type": "tielocell",      
+      "name": ["sky130_fd_sc_hd__conb_1"],
+      "output_ports": ["LO"]
+      },
+    {
+      "cell_type": "endcap",         
+      "name": ["sky130_fd_sc_hd__tap_1"]
+    },
+    {
+      "cell_type": "tapcell",        
+      "name": ["sky130_fd_sc_hd__tapvpwrvgnd_1"]
+    },
+    {
+      "cell_type": "stdfiller",      
+      "name": ["sky130_fd_sc_hd__fill_1", "sky130_fd_sc_hd__fill_2", "sky130_fd_sc_hd__fill_4", "sky130_fd_sc_hd__fill_8"]
+    },
+    {
+      "cell_type": "decap",          
+      "name": ["sky130_fd_sc_hd__decap_3", "sky130_fd_sc_hd__decap_4", "sky130_fd_sc_hd__decap_6", "sky130_fd_sc_hd__decap_8", "sky130_fd_sc_hd__decap_12"]
+    },
+    {
+      "cell_type": "driver",         
+      "name": ["sky130_fd_sc_hd__buf_4"],
+      "input_ports":  ["A"],
+      "output_ports": ["X"]
+    },
+    {
+      "cell_type": "ctsbuffer",         
+      "name": ["sky130_fd_sc_hd__clkbuf_1"]
+    }
   ]
 }

hammer/technology/sky130/extra/sky130-tech-gen-files/stackups-gen.py

@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+# type: ignore
+#   tell mypy to ignore this file during typechecking
+# -*- coding: utf-8 -*-
+#
+#  Generate Hammer Sky130 tech plugin file: sky130.tech.json
+#
+#  See LICENSE for licence details.
+import sys
+import json
+import os
+
+library='sky130_fd_sc_hd'
+
+def main(args) -> int:
+    if len(args) != 3:
+        print("Usage: ./stackups-gen.py /path/to/sky130A stackups.json")
+        return 1
+
+    SKY130A = sys.argv[1]
+
+    stackup = {}
+    stackup["name"] = library
+    stackup["grid_unit"] = 0.001
+    stackup["metals"] = []
+
+    def is_float(string):
+        try:
+            float(string)
+            return True
+        except ValueError:
+            return False
+
+    def get_min_from_line(line):
+        words = line.split()
+        nums = [float(w) for w in words if is_float(w)]
+        return min(nums)
+
+
+    tlef_path = os.path.join(SKY130A, 'libs.ref', library, 'techlef', f"{library}__min.tlef")
+    with open(tlef_path, 'r') as f:
+        metal_name = None
+        metal_index = 0
+        lines = f.readlines()
+        idx = -1
+        while idx < len(lines):
+            idx += 1
+            if idx == len(lines) - 1: break
+            line = lines[idx]
+            if '#' in line: line = line[:line.index('#')]
+            words = line.split()
+            if line.startswith('LAYER') and len(words) > 1:
+                if words[1].startswith('li') or words[1].startswith('met'):
+                    metal_name = words[1]
+                    metal_index += 1
+                    metal = {}
+                    metal["name"] = metal_name
+                    metal["index"] = metal_index
+
+            if metal_name is not None:
+                line = line.strip()
+                if line.startswith("DIRECTION"):
+                    metal["direction"] = words[1].lower()
+                if line.startswith("PITCH"):
+                    metal["pitch"] = get_min_from_line(line)
+                if line.startswith("OFFSET"):
+                    metal["offset"] = get_min_from_line(line)
+                if line.startswith("WIDTH"):
+                    metal["min_width"] = get_min_from_line(line)
+                if line.startswith("SPACINGTABLE"):
+                    metal["power_strap_widths_and_spacings"] = []
+                    while ';' not in line:
+                        idx += 1
+                        if idx == len(lines) - 1: break
+                        line = lines[idx].strip()
+                        if '#' in line: line = line[:line.index('#')]
+                        words = line.split()
+                        d = {}
+                        if line.startswith("WIDTH"):
+                            d["width_at_least"] = float(words[1])
+                            d["min_spacing"] = float(words[2])
+                            metal["power_strap_widths_and_spacings"].append(d.copy())
+                if line.startswith("END"):
+                    metal["grid_unit"] = 0.001
+                    stackup["metals"].append(metal.copy())
+                    metal_name = None
+
+
+    with open(sys.argv[2], 'w') as f:
+        json.dump(stackup, f, indent=2)
+
+    return 0
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))

hammer/technology/sky130/extra/sky130-tech-gen-files/stackups.json

@@ -1,11 +1,112 @@
+{
+  "name": "sky130_fd_sc_hd",
+  "grid_unit": 0.001,
+  "metals": [
     {
-      "name" : "sky130_fd_sc_hd",
-      "metals": [
-        {"name": "li1", "index": 1, "direction": "vertical", "min_width": 0.17, "max_width": 2147483.647, "pitch": 0.34, "offset": 0.23, "power_strap_widths_and_spacings": [{"width_at_least": 0.0, "min_spacing": 0.17}]},
-        {"name": "met1", "index": 2, "direction": "horizontal", "min_width": 0.14, "max_width": 2147483.647, "pitch": 0.28, "offset": 0.17, "power_strap_widths_and_spacings": [{"width_at_least": 0.0, "min_spacing": 0.14}, {"width_at_least": 3.0, "min_spacing": 0.28}]},
-        {"name": "met2", "index": 3, "direction": "vertical", "min_width": 0.14, "max_width": 2147483.647, "pitch": 0.28, "offset": 0.23, "power_strap_widths_and_spacings": [{"width_at_least": 0.0, "min_spacing": 0.14}, {"width_at_least": 3.0, "min_spacing": 0.28}]},
-        {"name": "met3", "index": 4, "direction": "horizontal", "min_width": 0.3, "max_width": 2147483.647, "pitch": 0.6, "offset": 0.34, "power_strap_widths_and_spacings": [{"width_at_least": 0.0, "min_spacing": 0.3}, {"width_at_least": 3.0, "min_spacing": 0.4}]},
-        {"name": "met4", "index": 5, "direction": "vertical", "min_width": 0.3, "max_width": 2147483.647, "pitch": 0.6, "offset": 0.46, "power_strap_widths_and_spacings": [{"width_at_least": 0.0, "min_spacing": 0.3}, {"width_at_least": 3.0, "min_spacing": 0.4}]},
-        {"name": "met5", "index": 6, "direction": "horizontal", "min_width": 1.6, "max_width": 2147483.647, "pitch": 3.2, "offset": 1.7, "power_strap_widths_and_spacings": [{"width_at_least": 0.0, "min_spacing": 1.6}]}
-      ]
+      "name": "li1",
+      "index": 1,
+      "direction": "vertical",
+      "pitch": 0.34,
+      "offset": 0.17,
+      "min_width": 0.17,
+      "power_strap_widths_and_spacings": [
+        {
+          "width_at_least": 0.0,
+          "min_spacing": 0.17
+        }
+      ],
+      "grid_unit": 0.001
+    },
+    {
+      "name": "met1",
+      "index": 2,
+      "direction": "horizontal",
+      "pitch": 0.34,
+      "offset": 0.17,
+      "min_width": 0.14,
+      "power_strap_widths_and_spacings": [
+        {
+          "width_at_least": 0.0,
+          "min_spacing": 0.14
+        },
+        {
+          "width_at_least": 3.0,
+          "min_spacing": 0.28
+        }
+      ],
+      "grid_unit": 0.001
+    },
+    {
+      "name": "met2",
+      "index": 3,
+      "direction": "vertical",
+      "pitch": 0.46,
+      "offset": 0.23,
+      "min_width": 0.14,
+      "power_strap_widths_and_spacings": [
+        {
+          "width_at_least": 0.0,
+          "min_spacing": 0.14
+        },
+        {
+          "width_at_least": 3.0,
+          "min_spacing": 0.28
+        }
+      ],
+      "grid_unit": 0.001
+    },
+    {
+      "name": "met3",
+      "index": 4,
+      "direction": "horizontal",
+      "pitch": 0.68,
+      "offset": 0.34,
+      "min_width": 0.3,
+      "power_strap_widths_and_spacings": [
+        {
+          "width_at_least": 0.0,
+          "min_spacing": 0.3
+        },
+        {
+          "width_at_least": 3.0,
+          "min_spacing": 0.4
+        }
+      ],
+      "grid_unit": 0.001
+    },
+    {
+      "name": "met4",
+      "index": 5,
+      "direction": "vertical",
+      "pitch": 0.92,
+      "offset": 0.46,
+      "min_width": 0.3,
+      "power_strap_widths_and_spacings": [
+        {
+          "width_at_least": 0.0,
+          "min_spacing": 0.3
+        },
+        {
+          "width_at_least": 3.0,
+          "min_spacing": 0.4
+        }
+      ],
+      "grid_unit": 0.001
+    },
+    {
+      "name": "met5",
+      "index": 6,
+      "direction": "horizontal",
+      "pitch": 3.4,
+      "offset": 1.7,
+      "min_width": 1.6,
+      "power_strap_widths_and_spacings": [
+        {
+          "width_at_least": 0.0,
+          "min_spacing": 1.6
+        }
+      ],
+      "grid_unit": 0.001
     }
+  ]
+}