qemu: device-sim bringup — boot smoke, A/B disk harness, virt kernel variant
The third simulator (deliberately not named "sim"): a QEMU -M virt VM that boots the real 6.18.46 kernel and enters at -kernel zImage — everything below (BootROM/idblock/U-Boot/real BCB A/B selection) is closed blobs + mask ROM and is explicitly out of scope. - qemu/mkinitramfs.sh: pinned static busybox (sha256 fail-closed) + rootfs/ - qemu/mkimage.sh: unprivileged sparse disk image with the device's canonical 12-partition blkdevparts A/B layout (vda == mmcblk0 mapping) - qemu/rootfs/: stage-1 init (by-name symlinks from PARTNAME uevents, whole-token warden.slot= parse, switch_root) + stage-2 init (userdata/oem mounts, slirp networking, payload daemon start) - qemu/run.sh: runner with --slot/--rtc/--watchdog/--rs485/--qmp/--display - qemu/configs/virt.fragment + WARDEN_KCONFIG_FRAGMENT hook in build/build-kernel.sh (canonical RV1106 build untouched when unset): adds PCI, pci-serial, i6300esb watchdog, WireGuard, virtio-gpu/input - qemu/tests/boot-smoke.sh: sentinel-asserting boot test Verified on QEMU 10.0.11: canonical zImage boots -M virt unmodified (the feared DEBUG_UNCOMPRESS decompressor hang does not exist in 6.18); full stack boots both slots; 12 by-name symlinks; userdata persists across reboot; -rtc base=2021-01-01 reproduces the no-RTC wrong-clock class. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018HUayid7W5w7jBdb9Rrj1K
This commit is contained in:
BFE Engineering
co-authored by
Claude Fable 5
Claude Fable 5
parent
44cdf2bf38
commit
bf3c93cf85
Executable
+107
@@ -0,0 +1,107 @@
|
||||
#!/usr/bin/env bash
|
||||
# Launch the WardenOS device VM (qemu-system-arm -M virt, single Cortex-A7,
|
||||
# 256M — the RV1106G3's shape). See qemu/README.md for what this does and does
|
||||
# not emulate.
|
||||
#
|
||||
# Usage: run.sh --kernel <zImage> [options] [-- <extra qemu args>]
|
||||
# --kernel PATH zImage (canonical or virt.fragment variant)
|
||||
# --initrd PATH initramfs (default: qemu/out/initramfs.cpio.gz)
|
||||
# --disk PATH virtio disk image from mkimage.sh (default: qemu/out/disk.img
|
||||
# when present; pass --no-disk for a diskless initramfs boot)
|
||||
# --no-disk boot without a disk (initramfs shell/smoke behavior)
|
||||
# --slot _a|_b rootfs slot to boot (default _a)
|
||||
# --rtc DATE guest RTC base, e.g. 2021-01-01 — reproduces the no-RTC
|
||||
# "device boots believing 2021" incident class
|
||||
# --rs485 SOCK unix socket chardev for the RS485/Modbus bridge
|
||||
# (pci-serial: needs the virt.fragment kernel)
|
||||
# --watchdog add i6300esb watchdog, reset on expiry (fragment kernel)
|
||||
# --qmp SOCK QMP unix socket (screendump, input-send-event, quit)
|
||||
# --display MODE off (default, -nographic) | on (gtk window) | headless
|
||||
# (virtio-gpu without a window; screendump via --qmp)
|
||||
# --ssh-port N hostfwd 127.0.0.1:N -> guest :22 (default 2222)
|
||||
# --http-port N hostfwd 127.0.0.1:N -> guest :80 (default 8080)
|
||||
# --api-port N hostfwd 127.0.0.1:N -> guest :28443 (default 28443)
|
||||
# --shell interactive shell in the guest instead of daemon hold
|
||||
set -euo pipefail
|
||||
|
||||
QEMU_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
||||
. "$QEMU_DIR/blkdevparts.conf"
|
||||
OUT="${OUT:-$QEMU_DIR/out}"
|
||||
|
||||
KERNEL="" INITRD="$OUT/initramfs.cpio.gz" DISK="" NO_DISK=0 SLOT="_a"
|
||||
RTC="" RS485="" WATCHDOG=0 QMP="" DISPLAY_MODE="off" SHELL_FLAG=0
|
||||
SSH_PORT=2222 HTTP_PORT=8080 API_PORT=28443
|
||||
EXTRA=()
|
||||
|
||||
while [ $# -gt 0 ]; do
|
||||
case "$1" in
|
||||
--kernel) KERNEL="${2:?}"; shift 2 ;;
|
||||
--initrd) INITRD="${2:?}"; shift 2 ;;
|
||||
--disk) DISK="${2:?}"; shift 2 ;;
|
||||
--no-disk) NO_DISK=1; shift ;;
|
||||
--slot) SLOT="${2:?}"; shift 2 ;;
|
||||
--rtc) RTC="${2:?}"; shift 2 ;;
|
||||
--rs485) RS485="${2:?}"; shift 2 ;;
|
||||
--watchdog) WATCHDOG=1; shift ;;
|
||||
--qmp) QMP="${2:?}"; shift 2 ;;
|
||||
--display) DISPLAY_MODE="${2:?}"; shift 2 ;;
|
||||
--ssh-port) SSH_PORT="${2:?}"; shift 2 ;;
|
||||
--http-port) HTTP_PORT="${2:?}"; shift 2 ;;
|
||||
--api-port) API_PORT="${2:?}"; shift 2 ;;
|
||||
--shell) SHELL_FLAG=1; shift ;;
|
||||
--) shift; EXTRA=("$@"); break ;;
|
||||
*) echo "FATAL: unknown argument '$1' (see header of $0)" >&2; exit 1 ;;
|
||||
esac
|
||||
done
|
||||
|
||||
[ -n "$KERNEL" ] && [ -f "$KERNEL" ] || {
|
||||
echo "FATAL: --kernel <zImage> required and must exist (got '${KERNEL:-}')" >&2
|
||||
exit 1
|
||||
}
|
||||
[ -f "$INITRD" ] || {
|
||||
echo "FATAL: initramfs not found at $INITRD — run qemu/mkinitramfs.sh" >&2
|
||||
exit 1
|
||||
}
|
||||
case "$SLOT" in _a|_b) ;; *) echo "FATAL: --slot must be _a or _b" >&2; exit 1 ;; esac
|
||||
|
||||
if [ "$NO_DISK" -eq 0 ] && [ -z "$DISK" ] && [ -f "$OUT/disk.img" ]; then
|
||||
DISK="$OUT/disk.img"
|
||||
fi
|
||||
if [ -n "$DISK" ] && [ ! -f "$DISK" ]; then
|
||||
echo "FATAL: disk image $DISK not found — run qemu/mkimage.sh (or pass --no-disk)" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# NOTE: never add `earlyprintk` — the config's DEBUG_UART_PHYS is the RV1106's
|
||||
# 0xff4c0000, which does not exist on -M virt.
|
||||
APPEND="console=ttyAMA0 rdinit=/init"
|
||||
ARGS=(
|
||||
-M virt -cpu cortex-a7 -smp 1 -m 256M
|
||||
-kernel "$KERNEL" -initrd "$INITRD"
|
||||
-netdev "user,id=n0,hostfwd=tcp:127.0.0.1:${SSH_PORT}-:22,hostfwd=tcp:127.0.0.1:${HTTP_PORT}-:80,hostfwd=tcp:127.0.0.1:${API_PORT}-:28443"
|
||||
-device virtio-net-device,netdev=n0
|
||||
-no-reboot
|
||||
)
|
||||
|
||||
if [ -n "$DISK" ] && [ "$NO_DISK" -eq 0 ]; then
|
||||
APPEND="$APPEND blkdevparts=$WARDEN_BLKDEVPARTS warden.slot=$SLOT"
|
||||
ARGS+=( -drive "if=none,file=$DISK,format=raw,id=vd0"
|
||||
-device virtio-blk-device,drive=vd0 )
|
||||
fi
|
||||
[ "$SHELL_FLAG" -eq 1 ] && APPEND="$APPEND warden.shell"
|
||||
[ -n "$RTC" ] && ARGS+=( -rtc "base=$RTC" )
|
||||
[ "$WATCHDOG" -eq 1 ] && ARGS+=( -device i6300esb -action watchdog=reset )
|
||||
[ -n "$RS485" ] && ARGS+=( -chardev "socket,id=rs485,path=$RS485,server=on,wait=off"
|
||||
-device pci-serial,chardev=rs485 )
|
||||
[ -n "$QMP" ] && ARGS+=( -qmp "unix:$QMP,server=on,wait=off" )
|
||||
|
||||
case "$DISPLAY_MODE" in
|
||||
off) ARGS+=( -nographic ) ;;
|
||||
on) ARGS+=( -device virtio-gpu-device,xres=720,yres=720
|
||||
-device virtio-tablet-device -serial mon:stdio ) ;;
|
||||
headless) ARGS+=( -device virtio-gpu-device,xres=720,yres=720
|
||||
-device virtio-tablet-device -display none -serial mon:stdio ) ;;
|
||||
*) echo "FATAL: --display must be off|on|headless" >&2; exit 1 ;;
|
||||
esac
|
||||
|
||||
exec qemu-system-arm "${ARGS[@]}" -append "$APPEND" ${EXTRA[@]+"${EXTRA[@]}"}
|
||||
Reference in New Issue
Block a user