# QEMU -M virt kernel variant, merged onto build/warden_defconfig via
# WARDEN_KCONFIG_FRAGMENT (see build/build-kernel.sh). The RV1106 zImage stays
# canonical and byte-identical when the variable is unset.
#
# The canonical zImage already BOOTS on -M virt as-is (verified 2026-08-29:
# the multi_v7 heritage supplies ARCH_VIRT + the virtio set, and DEBUG_LL's
# hardcoded RV1106 UART is inert as long as `earlyprintk` is never passed on
# the cmdline). This fragment therefore only ADDS what the device-sim
# scenarios need beyond the canonical config.

# -M virt exposes exactly one PL011 (probed: QEMU 10 dtb has a single
# pl011@9000000); every additional device below rides the machine's PCIe
# (ECAM "host generic") root.
CONFIG_PCI=y
CONFIG_PCI_HOST_GENERIC=y

# Second UART for the RS485/Modbus bridge: -device pci-serial (16550-class,
# shows up as ttyS0; stage-2 init aliases it to the device's /dev/ttyS4).
CONFIG_SERIAL_8250_PCI=y

# /dev/watchdog for flared's watchdog_loop(), untestable on both existing
# sims. i6300esb is the watchdog QEMU offers on arm virt (PCI device):
# -device i6300esb -action watchdog=reset.
CONFIG_WATCHDOG=y
CONFIG_I6300ESB_WDT=y

# wg0 mesh scenarios (flared owns identity, the panel shells out `wg`).
CONFIG_WIREGUARD=y

# Display + touch: virtio-gpu scanout with fbdev emulation (the VM UI build
# uses LVGL's fbdev backend; no libdrm needed in the guest), virtio-tablet
# for absolute-coordinate touch injection via QMP.
CONFIG_FB=y
CONFIG_DRM_VIRTIO_GPU=y
CONFIG_DRM_FBDEV_EMULATION=y
CONFIG_VIRTIO_INPUT=y