raspberry@raspberrypi-VirtualBox:~/qemu$ qemu-system-arm --version
QEMU emulator version 0.15.50, Copyright (c) 2003-2008 Fabrice Bellard
raspberry@raspberrypi-VirtualBox:~/qemu$ qemu-system-arm -cpu ?
Available CPUs:
  arm926
  arm946
  arm1026
  arm1136
  arm1136-r2
  arm1176
  arm11mpcore
  cortex-m3
  cortex-a8
  cortex-a9
  ti925t
  pxa250
  sa1100
  sa1110
  pxa255
  pxa260
  pxa261
  pxa262
  pxa270
  pxa270-a0
  pxa270-a1
  pxa270-b0
  pxa270-b1
  pxa270-c0
  pxa270-c5
  any