mirror of
https://github.com/retroSoC/retroSoC.git
synced 2026-11-04 22:32:36 +00:00
maksyuki
b5cbc89928
- Implemented a new TCL script for Tiny R2 feasibility checks, reporting clock properties, path delays, and reset loads. - Created a SystemVerilog module for the Tiny R2 reset tree, managing multiple reset signals for the system and its leaves. - Developed a Python script for capturing and analyzing feasibility metrics, ensuring compliance with reset-load and clock frequency requirements. - Added testbenches for the Tiny R2 reset tree and FIFO, validating reset behavior and timing contracts. - Introduced unit tests for feasibility analysis, ensuring correct handling of clock rates and reset load conditions.
164 lines
8.6 KiB
Python
164 lines
8.6 KiB
Python
#!/usr/bin/env python3
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"""Generate Tiny integration bindings and absolute source lists from owned maps."""
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from __future__ import annotations
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import argparse
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import json
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import re
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import sys
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from pathlib import Path
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ROOT = Path(__file__).resolve().parents[1]
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sys.path.insert(0, str(ROOT))
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from scripts.rtl.generate_memory_map import generate as generate_memory_map # noqa: E402
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from scripts.rtl.generate_pin_map import generate as generate_pin_map # noqa: E402
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from scripts.setup_helpers import atomic_write # noqa: E402
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TINY = ROOT / "rtl/tiny"
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def read_topology(path: Path, memory_map: Path) -> dict:
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document = json.loads(path.read_text())
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regions = {r["symbol"] for r in json.loads(memory_map.read_text())["regions"]}
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if document.get("schema_version") != 1 or document.get("dma_channels") != 4:
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raise ValueError("Tiny requires topology schema 1 and four DMA channels")
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if document.get("irq_vector_width") != 32 or document.get("external_irq_count") != 30:
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raise ValueError("Tiny requires a 32-bit IRQ vector and 30 external inputs")
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names: set[str] = set()
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bits: set[int] = set()
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for irq in document["interrupts"]:
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if irq["name"] in names or irq["core_bit"] in bits:
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raise ValueError("duplicate Tiny interrupt")
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if not 0 <= irq["core_bit"] < 32:
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raise ValueError("Tiny IRQ outside vector")
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names.add(irq["name"])
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bits.add(irq["core_bit"])
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assigned: set[str] = set()
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for target in document["apb_targets"]:
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for region in target["regions"]:
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if region not in regions or region in assigned:
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raise ValueError(f"invalid or duplicate APB region {region}")
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assigned.add(region)
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if assigned != {r for r in regions if r.startswith("APB4_")}:
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raise ValueError("Tiny topology must route every APB region")
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if len(document["apb_targets"]) != 16:
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raise ValueError("Tiny's fixed APB bridge requires sixteen targets")
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target_names = [target["name"] for target in document["apb_targets"]]
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if len(set(target_names)) != 16 or any(re.fullmatch(r"[a-z][a-z0-9_]*", name) is None
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for name in target_names):
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raise ValueError("Tiny APB target names must be unique identifiers")
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if sorted(item["pin"] for item in document["gpio_alt_functions"]) != list(range(32)):
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raise ValueError("Tiny GPIO map must contain all 32 pins exactly once")
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return document
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def generate_bindings(document: dict, output: Path) -> None:
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comment = "// Generated by scripts/generate_tiny.py; do not edit.\n"
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irq = [comment, "always_comb begin", " s_irq = '0;"]
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header = ["#ifndef RETROSOC_GENERATED_IRQ_METADATA_H",
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"#define RETROSOC_GENERATED_IRQ_METADATA_H", "#include <stdint.h>",
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"#define RS_SOC_IRQ_VECTOR_WIDTH UINT32_C(32)",
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"#define RS_SOC_EXTERNAL_IRQ_COUNT UINT32_C(30)",
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f"#define RS_SOC_ALLOCATED_IRQ_COUNT UINT32_C({len(document['interrupts']) - 2})"]
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for item in document["interrupts"]:
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bit, name = item["core_bit"], item["name"].upper()
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irq.append(f" s_irq[{bit}] = {item['signal']};")
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header.append(f"#define RS_SOC_IRQ_{name} UINT32_C({bit})")
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if bit >= 2:
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header.append(f"#define RS_SOC_EXT_IRQ_{name} UINT32_C({bit - 2})")
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irq.append("end\n")
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header.append("#endif\n")
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atomic_write(output / "rtl/tiny_irq.svh", "\n".join(irq))
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atomic_write(output / "include/retrosoc/generated/irq_metadata.h", "\n".join(header))
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atomic_write(output / "include/retrosoc/generated/user_extensions.h",
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"#ifndef RETROSOC_GENERATED_USER_EXTENSIONS_H\n"
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"#define RETROSOC_GENERATED_USER_EXTENSIONS_H\n"
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"#define RS_SOC_USER_CORE_COUNT 0U\n#define RS_SOC_USER_IP_COUNT 0U\n"
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"#define RS_SOC_HAS_USER_CORES 0U\n#define RS_SOC_HAS_USER_IP_MUX 0U\n#endif\n")
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atomic_write(output / "include/retrosoc/generated/soc_features.h",
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"#ifndef RETROSOC_GENERATED_SOC_FEATURES_H\n"
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"#define RETROSOC_GENERATED_SOC_FEATURES_H\n"
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"#define RS_SOC_TINY 1\n#define RS_SOC_HAS_PSRAM 0U\n"
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"#define RS_SOC_DMA_CHANNELS 4U\n#define RS_SOC_ID 0x54494E59U\n#endif\n")
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gpio = [comment]
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for function in document["gpio_alt_functions"]:
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pin = function["pin"]
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for mode in ("alt0", "alt1"):
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value = function[mode]
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gpio.extend(f"assign {signal} = u_gpio_if.di_i[{pin}];" for signal in value["inputs"])
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gpio.extend((f"assign u_gpio_if.{mode}_do_i[{pin}] = {value['do']};",
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f"assign u_gpio_if.{mode}_oe_i[{pin}] = {value['oe']};"))
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atomic_write(output / "rtl/tiny_gpio.svh", "\n".join(gpio) + "\n")
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ports, declarations, routes, decode = [], [comment], [comment], [comment]
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reset_assignments = []
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for index, target in enumerate(document["apb_targets"]):
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name = target["name"]
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ports.append(f"apb4_if.master {name}")
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declarations.append(f"logic s_{name}_rst_n;")
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declarations.append(f"apb4_if u_{name}_apb4_if (.pclk(clk_i), .presetn(s_{name}_rst_n));")
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reset_assignments.append(f"assign s_{name}_rst_n = s_leaf_rst_n[{index + 1}];")
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routes.append(f".{name}(u_{name}_apb4_if)")
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decode.append(f"if ({' || '.join(f'`SOC_ADDR_IS_{r}(s_addr_q)' for r in target['regions'])}) "
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f"s_select = {len(document['apb_targets'])}'b{1 << index:016b};")
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atomic_write(output / "rtl/tiny_apb_ports.svh", ",\n".join(ports) + "\n")
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atomic_write(output / "rtl/tiny_apb_interfaces.svh", "\n".join(declarations + reset_assignments) + "\n")
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atomic_write(output / "rtl/tiny_apb_connections.svh", ",\n".join(routes[1:]) + "\n")
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atomic_write(output / "rtl/tiny_apb_decode.svh", "\n".join(decode) + "\n")
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wiring = [comment]
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for index, target in enumerate(document["apb_targets"]):
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name = target["name"]
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for field, value in {"paddr": "s_addr_q", "pwrite": "s_write_q",
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"pwdata": "s_wdata_q", "pstrb": "s_wstrb_q", "pprot": "3'd0",
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"psel": f"s_select[{index}] && s_access",
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"penable": "s_enable"}.items():
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wiring.append(f"assign {name}.{field} = {value};")
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wiring.extend((f"assign s_ready[{index}] = {name}.pready;",
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f"assign s_error[{index}] = {name}.pslverr;",
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f"assign s_rdata[{index}] = {name}.prdata;"))
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atomic_write(output / "rtl/tiny_apb_wiring.svh", "\n".join(wiring) + "\n")
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def generate_filelists(output: Path, generated: Path, defines: list[str]) -> None:
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prefixes = {"top": TINY / "top", "dv": TINY / "dv", "ip": ROOT / "rtl/ip",
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"tech": ROOT / "rtl/tech", "clusterip": ROOT / "rtl/managed/clusterip",
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"hazard3": ROOT / "rtl/managed/hazard3/hdl", "physical": ROOT / "physical"}
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templates = [*sorted((TINY / "filelist").glob("*.fl")),
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ROOT / "rtl/filelist/pdk_ihp130.fl"]
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for template in templates:
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content = template.read_text()
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for prefix, directory in prefixes.items():
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content = re.sub(rf"(?<![^\s+])/{prefix}(?=/|\s|$)", str(directory), content)
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atomic_write(output / template.name, content)
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include = [generated / "rtl", generated / "memory_map/rtl", generated / "pin_map/rtl",
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generated / "archinfo"]
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atomic_write(output / "def.fl", " ".join([*defines, *(f"+incdir+{p}" for p in include)]) + "\n")
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atomic_write(output / "pdk_local.fl", "")
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def main() -> int:
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--output", type=Path)
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parser.add_argument("--filelists", type=Path)
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parser.add_argument("--define", action="append", default=[])
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parser.add_argument("--check", action="store_true")
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args = parser.parse_args()
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document = read_topology(TINY / "integration/soc_topology.json",
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TINY / "address_map/memory_map.json")
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if args.check:
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return 0
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if args.output is None or args.filelists is None:
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parser.error("--output and --filelists are required unless --check is used")
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if any(not value.startswith("+define+") for value in args.define):
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parser.error("--define requires a +define+ token")
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output = args.output.resolve()
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generate_memory_map(TINY / "address_map/memory_map.json", output / "memory_map", "YES", 128)
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generate_pin_map(TINY / "pin_map/pin_map.json", output / "pin_map")
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generate_bindings(document, output)
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generate_filelists(args.filelists.resolve(), output, args.define)
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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