Files
bfe-core1106-sdk/kernel/rv1106-enablement/build-m2.sh
T
BFE EngineeringandClaude Fable 5 2756de0b46 review: iteration-1 fixes across CI, bridge, VM harness, and docs
CI/pipeline:
- KERNEL_TARBALL passed as a YAML env literal '~' was never tilde-expanded
  and would have failed every hosted kernel-build dispatch; the path is now
  exported from the shell. Verified reproducible before the fix.
- Every job gets timeout-minutes; boot smoke uses timeout -k so a wedged
  qemu is SIGKILLed instead of holding the job.
- Tarball fetch + fail-closed sha256 verification deduplicated into
  build/fetch-kernel-tarball.sh (with curl retries), used by build-kernel.sh
  and both CI jobs. busybox fetch gains retries too.
- ccache layer for kernel-build (cache keyed on defconfig+patches) recovers
  the incremental-compile speed the ephemeral-runner move cost.
- build-kernel.sh now asserts every fragment option survived olddefconfig —
  merge_config -m pastes text and Kconfig silently drops unmet symbols.

rs485-bridge:
- pending-buffer cap (2x max RTU ADU) instead of unbounded growth;
  explicit accept-loop error handling with backoff instead of .flatten();
  per-arm inline bounds instead of the string-keyed lookup whose default
  would have mis-bounded a future get-input; control-socket cleanup errors
  surfaced; flag-shaped values rejected in arg parsing; doc example uses a
  private mktemp dir. Test timing margins widened for contended runners
  (gap 25->120ms, 60x margin on the split-frame test).

VM harness:
- stage-1/stage-2 boot scripts share one validated slot parser and one
  by-name populator (qemu/rootfs/etc/warden-lib.sh) — the duplicated
  parser had already diverged on validation; userdata/oem mount failures
  now fail fast with a greppable sentinel; udhcpc fallback keys off the
  interface actually having an address; switch_root applet guarded.
- boot-smoke delegates the qemu invocation to run.sh (machine shape lives
  in ONE place); run.sh port 0 disables a hostfwd.
- mkimage: unknown partition names fail at build time; DISK_END is a max,
  not last-entry; --state keys validated as filenames.
- portal-scenario: mock readiness is asserted (no silent fall-through),
  hostfwd port collisions retried, mount-failure sentinel fails fast.
- ui-shot: fixed sleeps replaced with bounded screendump polling; the
  repaint assertion is real and documented as such. qmp.py loses its
  module-global and gains argv validation.

Docs/scrub: bench-host paths and the site AP name removed from six more
port docs and two evidence tables; path-bearing build artifacts (.elf,
.map) untracked (the 154-byte firmware .bin is path-free and stays);
ADR-0003 marked visibility-superseded by ADR-0007; stale section
cross-reference fixed; flare-edge noted as private for outside readers;
stale root-level review report removed per the new workspace rule.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018HUayid7W5w7jBdb9Rrj1K
2026-08-30 08:19:17 -06:00

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#!/usr/bin/env bash
# build-m2.sh — reproducible M2 (earlycon) build of the RV1106 → 6.18 forward-port.
#
# Produces: a zImage with our ported SoC drivers, and rv1106-warden-m2.dtb.
# Boot is a separate on-hardware step (see PORT-STATUS.md "M2 boot").
#
# Usage: KTREE=/path/to/linux-6.18.46 SDK_TC=/path/to/toolchain/bin ./build-m2.sh
# Defaults match this workspace.
set -euo pipefail
FE="${FE:?set FE to a flare-edge checkout path}"
KTREE="${KTREE:-$FE/research/linux-6.18.46}"
SDK_TC="${SDK_TC:-$FE/sdk/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin}"
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# The SDK toolchain bakes absolute paths and needs `python` (not python3) + a
# space-free PATH (see the flare-edge-sdk-path-compat note).
export PATH="$SDK_TC:/usr/bin:/bin"
export ARCH=arm
export CROSS_COMPILE=arm-rockchip830-linux-uclibcgnueabihf-
[ -d "$KTREE" ] || { echo "kernel tree not found: $KTREE" >&2; exit 1; }
command -v python >/dev/null || { echo "need 'python' on PATH (SDK quirk)" >&2; exit 1; }
# Stage our board DT into the tree if it drifted from the capture.
install -m664 "$HERE/dts/rv1106-warden-m2.dts" \
"$KTREE/arch/arm/boot/dts/rockchip/rv1106-warden-m2.dts"
grep -q 'rv1106-warden-m2.dtb' "$KTREE/arch/arm/boot/dts/rockchip/Makefile" \
|| sed -i 's/\trk3288-vyasa.dtb/\trk3288-vyasa.dtb \\\n\trv1106-warden-m2.dtb/' \
"$KTREE/arch/arm/boot/dts/rockchip/Makefile"
cd "$KTREE"
make ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" multi_v7_defconfig
./scripts/kconfig/merge_config.sh -m .config "$HERE/configs/m2-earlycon.fragment"
make ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" olddefconfig
make ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" -j"$(nproc)" zImage
make ARCH=arm CROSS_COMPILE="$CROSS_COMPILE" rockchip/rv1106-warden-m2.dtb
echo
echo "== M2 build OK =="
ls -la arch/arm/boot/zImage arch/arm/boot/dts/rockchip/rv1106-warden-m2.dtb