BFE EngineeringandClaude Fable 5
13b7d063a2
Phase 4+5 of the device sim: - Display + touch verified end-to-end: virtio-gpu at 720x720 (fbdev emulation) renders the real WardenOS dashboard from the static LVGL fbdev+evdev UI build (flare-edge qemu-vm-support tools/build-ui-vm.sh); QMP input-send-event taps the Metrics tab and qemu/tests/ui-shot.sh asserts the repaint from screendumps. Two load-bearing QEMU flags found and documented: -global virtio-mmio.force-legacy=false (gpu/input are VERSION_1-only) and the 200ms press hold (an instantaneous press+release lands inside one LVGL indev poll and never clicks). - qemu/tests/qmp.py: minimal QMP client (screendump, tap, quit). - stage-2 init starts warden-ui when present and fb0 exists. - docs/decisions/0006-qemu-device-sim.md: virt-not-custom-board, the enters-at-kernel boundary, fragment policy, naming, consequences. - docs/architecture.md: new section 7 (device emulation), order-of-work item 7; modbus cross-reference to the bridge. - qemu/README.md: emulated-vs-not table, scenarios, gotchas, host/runner requirements. docs/ci-cd.md: runner needs one-time qemu-system-arm install (fail-closed smoke until then, [maintainer]-gated). Repo README updated. Final sweep on this commit: shellcheck clean, bridge 7/7 tests, boot smoke PASS, portal scenario PASS (check-in + fw pull + signed .wfw download), ui-shot PASS (touch navigates to Metrics) — all under the final flags. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018HUayid7W5w7jBdb9Rrj1K
96 lines
3.4 KiB
Plaintext
Executable File
96 lines
3.4 KiB
Plaintext
Executable File
#!/bin/busybox sh
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# Stage-2 init: PID 1 on the disk rootfs (rootfs_a or rootfs_b), reached via
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# switch_root from the initramfs. Brings up the minimum a WardenOS userspace
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# needs — mounts, by-name symlinks, network, serial alias — then starts any
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# payload daemons and holds. This stands in for the device's BusyBox SysV
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# /etc/init.d/S* sequence; it is deliberately tiny, not a model of it.
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/bin/busybox mount -t devtmpfs devtmpfs /dev 2>/dev/null
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exec </dev/console >/dev/console 2>&1
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/bin/busybox --install -s /bin
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mount -t proc proc /proc
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mount -t sysfs sysfs /sys
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mount -t tmpfs tmpfs /tmp
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# Fresh devtmpfs — repopulate the by-name contract (slotctl.rs depends on it).
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mkdir -p /dev/block/by-name
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for uev in /sys/class/block/vda*/uevent; do
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[ -f "$uev" ] || continue
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partname=""
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devname=""
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while IFS='=' read -r k v; do
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case "$k" in
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PARTNAME) partname="$v" ;;
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DEVNAME) devname="$v" ;;
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esac
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done < "$uev"
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[ -n "$partname" ] && [ -n "$devname" ] \
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&& ln -sf "/dev/$devname" "/dev/block/by-name/$partname"
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done
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# Slot (whole-token parse, same rule as stage 1).
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slot="_a"
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for tok in $(cat /proc/cmdline); do
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case "$tok" in
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warden.slot=*) slot="${tok#warden.slot=}" ;;
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esac
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done
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# The device's matched mounts: persistent state and the slot's oem partition.
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mount -t ext4 /dev/block/by-name/userdata /userdata || echo "init: userdata mount failed"
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mount -t ext4 "/dev/block/by-name/oem${slot}" /oem || echo "init: oem${slot} mount failed"
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mkdir -p /userdata/warden
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# RS485: warden-modbus hardcodes /dev/ttyS4 at compile time; alias it to the
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# VM's pci-serial UART when one is present (needs the virt.fragment kernel).
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[ -c /dev/ttyS0 ] && ln -sf /dev/ttyS0 /dev/ttyS4
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# Network: slirp user-mode net on eth0 (DHCP, fallback to QEMU's static map).
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ip link set lo up
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if [ -e /sys/class/net/eth0 ]; then
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ip link set eth0 up
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if ! udhcpc -i eth0 -n -q -t 5 -T 2 >/dev/null 2>&1; then
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ip addr add 10.0.2.15/24 dev eth0 2>/dev/null
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ip route replace default via 10.0.2.2 dev eth0
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echo "nameserver 10.0.2.3" > /etc/resolv.conf
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fi
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fi
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hostname warden-qemu
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echo "WARDEN-QEMU-ROOTFS-OK slot=${slot}"
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# Payload daemons (dropped into /usr/bin by qemu/mkimage.sh from qemu/payload/).
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# WARDEN_FLARE_INSECURE=1: the VM's portal is the desk mock over plain HTTP.
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# This is a dev instrument — a production device build never sets it.
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export WARDEN_FLARE_INSECURE=1
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# No HPMCU on -M virt: the mailbox SRAM (0xff6fff00) is unmapped bus space
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# here, and flared's /dev/mem poke dies with an external abort (SIGBUS). The
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# SCR1 supervisor state machine is modeled in sim/src/hpmcu.rs instead.
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export WARDEN_HPMCU=0
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for d in /usr/bin/warden-flared /usr/bin/warden-modbus; do
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if [ -x "$d" ]; then
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name="$(basename "$d")"
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echo "init: starting $name"
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"$d" > "/tmp/${name}.log" 2>&1 &
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fi
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done
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# The UI (LVGL fbdev+evdev build from flare-edge tools/build-ui-vm.sh) needs
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# virtio-gpu's fbdev: present only with run.sh --display on|headless AND the
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# virt.fragment kernel.
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if [ -x /usr/bin/warden-ui ] && [ -c /dev/fb0 ]; then
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echo "init: starting warden-ui (fbdev)"
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/usr/bin/warden-ui > /tmp/warden-ui.log 2>&1 &
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fi
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if grep -qw warden.shell /proc/cmdline; then
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echo "warden.shell: interactive shell (exit powers off)"
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setsid cttyhack sh
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poweroff -f
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fi
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# Hold: daemons run, console idles, scenarios drive the VM from outside.
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while :; do sleep 3600; done
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