compiling and running l4android-arm in qemu

Dear all, I have compiled l4android, l4 and fiasco for arm architecture and now I am attempting to run elf image in qemu.However, I see only a black screen in qemu. There is any io messages. What could be the reason? My qemu version is 1.7.1. The images that I have after making elfimages are: bootstrap.elf bootstap_L4LinuxARM bootstap_L4LinuxARM.elf The used command for running image: $qemu-system-arm -M realview-pbx-a9 -m 2048 -kernel bootstrap_L4LinuxARM.elf -serial stdio Thanks in advance, Sincerely, Cem Akpolat