feat: add experimental IHP support

config_utils.py

@@ -2,6 +2,7 @@
 import logging
 import os
 import re
+import subprocess
 import tkinter
 from collections.abc import Iterable
 
@@ -42,13 +43,43 @@ def py_set(key: str, value: str | None = None):
 
 
 def read_json_config(file: str):
-    return json.load(open(file))
+    config = json.load(open(file))
+    config.pop("//", None)
+    return config
 
 
 def read_yaml_config(file: str):
     return yaml.safe_load(open(file))
 
 
+def read_mk_config(file: str, design_dir: str | None = None):
+    logging.warning(
+        "Reading Makefile configuration files is an experimental feature and could be removed"
+    )
+    env_pre = {} if design_dir is None else {"DESIGN_HOME": design_dir}
+    mk_cg = "all:\n\t@env"
+    mk_tg = f"-include {file}\n{mk_cg}"
+    env_cg = subprocess.run(
+        "make -f -",
+        shell=True,
+        env=env_pre,
+        input=mk_cg,
+        capture_output=True,
+        text=True,
+    ).stdout.strip()
+    env_tg = subprocess.run(
+        "make -f -",
+        shell=True,
+        env=env_pre,
+        input=mk_tg,
+        capture_output=True,
+        text=True,
+    ).stdout.strip()
+    env_diff = set(env_tg.split("\n")) - set(env_cg.split("\n"))
+    config = dict(i.split("=", 1) for i in env_diff)
+    return config
+
+
 def read_config(basename: str, formats: Iterable[str], design_dir: str | None = None):
     for fmt in formats:
         file = f"{basename}.{fmt}"
@@ -59,6 +90,8 @@ def read_config(basename: str, formats: Iterable[str], design_dir: str | None =
                 return read_json_config(file)
             elif fmt == "yaml":
                 return read_yaml_config(file)
+            elif fmt == "mk":
+                return read_mk_config(file)
             else:
                 raise ConfigFileError(f"Unexpected configuration file format: {fmt}")
     raise ConfigFileError(
@@ -89,6 +122,16 @@ def write_yaml_config(config: dict, file: str):
         yaml.safe_dump(config, f, default_flow_style=False, sort_keys=False)
 
 
+def write_mk_config(config: dict, file: str):
+    with open(file, "w") as f:
+        for key, value in config.items():
+            if type(value) in (list, tuple):
+                value = " ".join(value)
+            if type(value) == str:
+                value = value.replace("dir::", "$(DESIGN_HOME)/")
+            print(f"export {key} = {value}", file=f)
+
+
 def write_config(config: dict, basename: str, formats: Iterable[str]):
     for fmt in formats:
         file = f"{basename}.{fmt}"
@@ -98,5 +141,7 @@ def write_config(config: dict, basename: str, formats: Iterable[str]):
             write_json_config(config, file)
         elif fmt == "yaml":
             write_yaml_config(config, file)
+        elif fmt == "mk":
+            write_mk_config(config, file)
         else:
             raise ConfigFileError("Unexpected configuration file format: {fmt}")

ihp/categories.json

@@ -0,0 +1,67 @@
+{
+   "categories" : [
+      "AND",
+      "OR",
+      "NAND",
+      "NOR",
+      "Clock",
+      "Flip Flops",
+      "Multiplexer",
+      "Latch",
+      "Inverter",
+      "Buffer",
+      "Fill",
+      "Tap",
+      "Diode",
+      "Combo Logic",
+      "Misc"
+   ],
+   "map" : {
+      "a21o" : 13,
+      "a21oi" : 13,
+      "a22oi" : 13,
+      "a221oi" : 13,
+      "and2" : 0,
+      "and3" : 0,
+      "and4" : 0,
+      "antennanp" : 12,
+      "buf" : 9,
+      "decap" : 10,
+      "dfrbp" : 5,
+      "dlhq" : 7,
+      "dlhr" : 7,
+      "dlhrq" : 7,
+      "dllr" : 7,
+      "dllrq" : 7,
+      "dlygate4sd1" : 14,
+      "dlygate4sd2" : 14,
+      "dlygate4sd3" : 14,
+      "ebufn" : 14,
+      "einvn" : 14,
+      "fill" : 10,
+      "inv" : 8,
+      "lgcp" : 4,
+      "mux2" : 6,
+      "mux4" : 6,
+      "nand2" : 2,
+      "nand2b" : 2,
+      "nand3" : 2,
+      "nand3b" : 2,
+      "nand4" : 2,
+      "nor2" : 3,
+      "nor2b" : 3,
+      "nor3" : 3,
+      "nor4" : 3,
+      "o21ai" : 13,
+      "or2" : 1,
+      "or3" : 1,
+      "or4" : 1,
+      "sdfbbp" : 5,
+      "sighold" : 14,
+      "slgcp" : 4,
+      "tiehi" : 14,
+      "tielo" : 14,
+      "xnor2" : 3,
+      "xor2" : 1
+   }
+}

ihp/constraint.sdc

@@ -0,0 +1,13 @@
+set clk_name  core_clock
+set clk_port_name clk
+set clk_period 20
+set clk_io_pct 0.2
+
+set clk_port [get_ports $clk_port_name]
+
+create_clock -name $clk_name -period $clk_period $clk_port
+
+set non_clock_inputs [lsearch -inline -all -not -exact [all_inputs] $clk_port]
+
+set_input_delay  [expr $clk_period * $clk_io_pct] -clock $clk_name $non_clock_inputs 
+set_output_delay [expr $clk_period * $clk_io_pct] -clock $clk_name [all_outputs]