root password: scummvm
user: scummvm
password: scummvm

qemu-system-ppc \
  -L pc-bios \
  -boot d \
  -M mac99,via=pmu \
  -m 2048 \
  -g 1024x750x32 \
  -no-reboot \
  -boot c \
  -prom-env "boot-device=hd:,\yaboot" \
  -prom-env "boot-args=conf=hd:,\yaboot.conf" \
  -hda      "hda-debian8-ppc.qcow2"