mirror of
https://github.com/retroSoC/retroSoC.git
synced 2026-11-04 22:32:36 +00:00
maksyuki
71d52f357e
- Introduced to handle the preparation of the SKY130 OpenRAM SRAM views. - Updated to download and prepare the SRAM archive during PDK setup. - Enhanced OpenSTA and Yosys configurations to accommodate SRAM macro integration. - Added Verilog simulation models for GF180 and SKY130 SRAM macros. - Implemented tests for SRAM setup and validation, ensuring correct integration and functionality. - Updated various Makefiles and scripts to support SRAM size and macro configurations.
77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
"""Tests for the locked SKY130 OpenRAM SRAM setup path."""
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from __future__ import annotations
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import hashlib
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import io
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import json
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import tarfile
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from pathlib import Path
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import pytest
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from physical.pdk.prepare_sky130_sram import (
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EXPECTED_CORNERS,
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EXPECTED_GEOMETRY,
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INPUT_CONFIG_SHA256,
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MACRO,
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OPENRAM_COMMIT,
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REQUIRED_FILES,
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SKY130_BUILDSPACE_REVISION,
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SKY130_CIEL_REVISION,
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prepare,
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)
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def make_archive(path: Path, *, corners: list[str] | None = None) -> str:
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payloads = {
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name: f"generated {name}\n".encode()
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for name in REQUIRED_FILES
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if name not in {"manifest.json", "SHA256SUMS"}
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}
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manifest = {
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"schema_version": 1,
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"macro": MACRO,
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"geometry": EXPECTED_GEOMETRY,
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"corners": EXPECTED_CORNERS if corners is None else corners,
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"openram_commit": OPENRAM_COMMIT,
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"input_config_sha256": INPUT_CONFIG_SHA256,
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"sky130_ciel_revision": SKY130_CIEL_REVISION,
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"sky130_buildspace_revision": SKY130_BUILDSPACE_REVISION,
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"analytical_characterization": True,
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"drc_lvs_checked": False,
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"files": {
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name: hashlib.sha256(content).hexdigest() for name, content in payloads.items()
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},
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}
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payloads["manifest.json"] = (json.dumps(manifest) + "\n").encode()
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payloads["SHA256SUMS"] = b"fixture checksums\n"
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with tarfile.open(path, "w:gz") as archive:
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for name, content in payloads.items():
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member = tarfile.TarInfo(name)
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member.size = len(content)
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archive.addfile(member, io.BytesIO(content))
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return hashlib.sha256(path.read_bytes()).hexdigest()
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def test_prepare_sky130_sram_is_verified_and_idempotent(tmp_path: Path) -> None:
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archive = tmp_path / "sram.tar.gz"
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digest = make_archive(archive)
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output = tmp_path / "openram"
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prepare(archive, output, digest)
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first_mtime = (output / ".complete").stat().st_mtime_ns
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prepare(archive, output, digest)
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assert (output / f"{MACRO}.v").is_file()
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assert (output / ".complete").read_text(encoding="utf-8").strip() == digest
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assert (output / ".complete").stat().st_mtime_ns == first_mtime
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def test_prepare_sky130_sram_rejects_wrong_corners(tmp_path: Path) -> None:
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archive = tmp_path / "sram.tar.gz"
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digest = make_archive(archive, corners=["TT_1p8V_25C"])
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with pytest.raises(RuntimeError, match="corners"):
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prepare(archive, tmp_path / "openram", digest)
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