qemu: real-image milestone — boot an actual flare-edge build in the VM

mkimage gains --rootfs-image/--oem-image (raw ext4 matched pair placed into slot A, size-checked fail-closed; slot B keeps the skeleton as a known-good fallback), and stage-1 rc now hands the live devtmpfs to the new root across switch_root — busybox switch_root moves nothing, our skeleton init remounted defensively, but a REAL image's getty opens /dev/console immediately and looped on ENOENT without it. Verified with the 2026-08-24 flare-edge build (rootfs 192M + oem 26M): the image's own rcS chain runs on the 6.18 virt kernel, real daemons start (warden-modbus confirmed running via root shell; the shipped 0.2.4 flared reproduces flare-edge#106 exactly, and S99hciinit reports the issue-#4 btlpm symptom — the VM doubles as a faithful reproducer of known field bugs), and a getty answers on the console. qemu/tests/real-image-boot.sh asserts switch_root + daemon starts + login prompt, credential-free. REAL-IMAGE-BOOT-PASS. Regression sweep after the shared-path changes: OTA-APPLY-PASS, PORTAL-SCENARIO-PASS, UI-SHOT-PASS, boot smoke OK. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018HUayid7W5w7jBdb9Rrj1K
2026-08-30 11:00:02 -06:00
parent d63c2117c1
commit 7ab07a35d3
4 changed files with 136 additions and 4 deletions
@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+# Real-image milestone: boot an ACTUAL flare-edge build (rootfs.img + oem.img
+# matched pair) in the VM on the 6.18 kernel and assert its own init chain
+# reaches multi-user: the vendor rcS runs, real warden daemons start, and a
+# getty answers on the console.
+#
+# Documented caveats (this is a fidelity milestone, not full parity): the
+# RV1106-only init steps degrade on virt (backlight, goodix, npu, the 5.10
+# /oem modules fail vermagic), and binaries older than the flare-edge #106
+# fix reproduce that crash faithfully. Interactive login uses the image's own
+# credentials — deliberately not recorded here.
+#
+# FAILS CLOSED on missing prerequisites.
+#
+# Usage: real-image-boot.sh <zImage> <rootfs.img> <oem.img>
+set -euo pipefail
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"     # qemu/tests/
+QDIR="$(cd "$HERE/.." && pwd)"                           # qemu/
+
+ZIMAGE="${1:-}"; ROOTFS="${2:-}"; OEM="${3:-}"
+for f in "$ZIMAGE" "$ROOTFS" "$OEM"; do
+  if [ -z "$f" ] || [ ! -f "$f" ]; then
+    echo "FATAL: usage: $0 <zImage> <rootfs.img> <oem.img> — '$f' missing" >&2
+    exit 1
+  fi
+done
+command -v qemu-system-arm >/dev/null || {
+  echo "FATAL: qemu-system-arm not on PATH — see qemu/README.md" >&2
+  exit 1
+}
+
+WORK="$(mktemp -d /tmp/wqr.XXXXXX)"
+QEMU_PID=""
+cleanup() {
+  if [ -n "$QEMU_PID" ]; then kill "$QEMU_PID" 2>/dev/null || true; fi
+  rm -rf "$WORK"
+}
+trap cleanup EXIT
+
+bash "$QDIR/mkinitramfs.sh"
+bash "$QDIR/mkimage.sh" --rootfs-image "$ROOTFS" --oem-image "$OEM"
+
+for _attempt in 1 2 3; do
+  PORT=$((23000 + RANDOM % 20000))
+  : > "$WORK/console.log"
+  bash "$QDIR/run.sh" --kernel "$ZIMAGE" \
+    --ssh-port "$PORT" --http-port $((PORT + 1)) --api-port $((PORT + 2)) \
+    > "$WORK/console.log" 2>&1 &
+  QEMU_PID=$!
+  sleep 3
+  kill -0 "$QEMU_PID" 2>/dev/null && break
+  if grep -aq 'Could not set up host forwarding' "$WORK/console.log"; then
+    echo "== hostfwd port collision on base $PORT — retrying"
+    QEMU_PID=""
+    continue
+  fi
+  echo "FATAL: VM died at launch:" >&2; tail -20 "$WORK/console.log" >&2; exit 1
+done
+if [ -z "$QEMU_PID" ] || ! kill -0 "$QEMU_PID" 2>/dev/null; then
+  echo "FATAL: could not launch the VM after 3 port attempts" >&2
+  exit 1
+fi
+
+deadline=$((SECONDS + 180))
+ok_switch=0 ok_daemons=0 ok_getty=0
+while [ $SECONDS -lt $deadline ]; do
+  grep -aq 'rc: switching root to rootfs_a' "$WORK/console.log" && ok_switch=1
+  [ "$(grep -ac 'Starting warden-' "$WORK/console.log")" -ge 2 ] && ok_daemons=1
+  grep -aq 'login:' "$WORK/console.log" && ok_getty=1
+  [ $ok_switch -eq 1 ] && [ $ok_daemons -eq 1 ] && [ $ok_getty -eq 1 ] && break
+  kill -0 "$QEMU_PID" 2>/dev/null || {
+    echo "FATAL: VM exited early" >&2; tail -30 "$WORK/console.log" >&2; exit 1; }
+  sleep 3
+done
+
+fail=0
+[ $ok_switch -eq 1 ]  || { echo "FAIL: never switch_rooted into the real image"; fail=1; }
+[ $ok_daemons -eq 1 ] || { echo "FAIL: the image's own init never started warden daemons"; fail=1; }
+[ $ok_getty -eq 1 ]   || { echo "FAIL: no getty login prompt on the console"; fail=1; }
+[ $fail -eq 0 ] || { tail -25 "$WORK/console.log" >&2; exit 1; }
+echo "REAL-IMAGE-BOOT-PASS: the flare-edge image reached multi-user on the VM"