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{
  "commit": "eb06fecc8d96f441305d96cac9a91ddfd7a314e3",
  "tree": "496c4e4c70bbce76ac69750f7f2fd2aa12d20fc3",
  "parents": [
    "55cf2ea0b9b2ac69c62b53915899f685e331d485"
  ],
  "author": {
    "name": "Miguel Osorio",
    "email": "miguelosorio@google.com",
    "time": "Thu May 21 15:05:07 2026 -0700"
  },
  "committer": {
    "name": "Miguel O",
    "email": "migue48@gmail.com",
    "time": "Thu May 28 14:51:30 2026 -0700"
  },
  "message": "[earlgrey] add QEMU support\n\nWire the lowRISC QEMU ot-earlgrey machine into target/earlgrey as a\ntarget (parallel to verilator). QEMU runs ~50x faster\nthan verilator (2.6s vs minutes) and is part of the earlgrey_qemu_tests\nworkflow within ci so the tests run on every PR.\n\nActive QEMU tests:\n- //target/earlgrey/tests/ipc/user:ipc_runner_qemu_test        PASS 2.6s\n- //target/earlgrey/tests/threads/kernel:threads_runner_qemu_test  PASS 12.5s\n50/50 stability runs, zero flakes.\n\nBuild changes:\n- third_party/qemu/: lowRISC QEMU release archive pinned to\n  v10.2.0-2026-01-15; hermetic pip-parse for hjson + pyelftools\n  (@openprot_python_deps, Bazel-managed Python 3.11).\n- third_party/opentitan_rtl/: vendored RTL constants for cfggen.\n  RMA OTP vmem consumed from @opentitan_devbundle (no local copy).\n- target/earlgrey/tooling/qemu.bzl: qemu_cfg / qemu_otp / qemu_flash\n  rules + pure-function helpers callable from opentitan_runner.bzl.\n- target/earlgrey/tooling/qemu_runner.py + qemu_start.sh: Python\n  harness with HMP cont, UART Unix-socket reader, pw_tokenizer\n  detokenization, SIGTERM-safe cleanup.\n\nTarget glue:\n- target_type\u003dqemu added; entry.rs .fake_rom_ext cfg widened from\n  `verilator` to `any(verilator, qemu)`.\n  Silicon ROM delta verified at 0 bytes.\n- config.rs gets qemu SYSTEM_CLOCK_HZ \u003d 24_000_000 (matches\n  opentitan/sw/device/lib/arch/device_sim_qemu.c).\n- opentitan_runner.bzl gains interface\u003d\"qemu\" branch with _QEMU_ATTRS\n  separated from _BASE_ATTRS to avoid testonly contamination of\n  non-test opentitan_runner targets. interface attr gained values\u003d[...]\n  constraint.\n\nCI: new earlgrey_qemu_tests workflow added to workflows.json, wired\ninto ci group; ci_tests filters now exclude -qemu to prevent\ndouble-counting.\n\nSigned-off-by: Miguel Osorio \u003cmiguelosorio@google.com\u003e\n",
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