renode(TEST-PIX-019): add the M4 third core — M7+M4+F100 co-execute with a LIVE M7↔M4 shared-mem link (Stage 4)#104
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…ith a LIVE M7<->M4 shared-mem link (Stage 4) Extends the Renode multi-node vehicle from M7+F100 to the FULL three-core 6X-RT topology, per the M4 plan (DD-018 T2 sensor-offload core). NEW: rt1176-dualcore.repl — cpu_m7 + cpu_m4 on the shared RT1176 sysbus (per-core NVIC via BusPointRegistration), + a SHMEM ring @0x20400000 (relay-bus carrier region, DD-009) + an MU mailbox stub. Kept SEPARATE from the CI-gated pixhawk6xrt.repl (M7-only smoke), which is untouched. NEW: m4/m4-heartbeat.elf (+ boot.S/link.ld) — a tiny Cortex-M4 firmware (OCRAM vectors/text/stack) that publishes an advancing heartbeat to the SHMEM ring, standing in for the sensor-offload workload until real drivers land. CONFIRMED (Renode v1.16.1): all THREE cores co-execute — cpu_m7 -> LPUART1 "JESS-RT1176 boot OK"; cpu_m4 writes ~0xA2C29 to SHMEM @0x20400000 after 0.02s (the on-die M7<->M4 shared-mem link is LIVE, not just instantiated); f100-io (gust) co-executes. ORACLE PASS. run-vehicle-multinode.sh updated to the 3-core model with per-core VTOR (M7=smoke 0x0, M4=heartbeat 0x20240000) + M7-banner and M4-heartbeat assertions. DEFERRED (status=draft): reactive failsafe handoff needs gust ipc-rx wired to a connectable transport (asked gale#65); real falcon/M4-drivers gated on synth #369/#275; MU doorbell-IRQ is a stub (ring is live). rivet validate (v0.18.0): PASS. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Extends the Renode multi-node vehicle from M7+F100 to the full three-core 6X-RT topology — the M4 plan (DD-018 T2 sensor-offload core).
New:
rt1176-dualcore.repl—cpu_m7+cpu_m4on the shared RT1176 sysbus (per-core NVIC viaBusPointRegistration), + a SHMEM ring @ 0x20400000 (relay-bus carrier region, DD-009) + an MU mailbox stub. Kept separate from the CI-gatedpixhawk6xrt.repl(M7-only smoke), which is untouched.m4/m4-heartbeat.elf(+boot.S/link.ld) — a tiny Cortex-M4 firmware (OCRAM vectors/text/stack) that publishes an advancing heartbeat to the SHMEM ring, standing in for the sensor-offload workload until real drivers land.Confirmed (Renode v1.16.1) — all three cores co-execute:
cpu_m7boots smoke → LPUART1JESS-RT1176 boot OKcpu_m4writes ~0xA2C29 to SHMEM @ 0x20400000 after 0.02 s — the on-die M7↔M4 shared-mem link is live (not just instantiated)f100-io(gust) co-executesrun-vehicle-multinode.shupdated to the 3-core model with per-core VTOR.Deferred (status=draft, honest): reactive failsafe handoff needs gust
ipc-rxwired to a connectable transport (asked gale#65); real falcon / M4 drivers gated on synth #369/#275; MU doorbell-IRQ is a stub (the ring is live).rivet validate(v0.18.0): PASS.🤖 Generated with Claude Code