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#Hello world for bare metal ARM using QEMU

This code run qemu(arm:VersatilePB) and print "Hello World!" with sleeping cpu.

install qemu-system & g++-arm-gcc

• make output.bin:

  $ make
  

• run output.bin on qemu:

  $ qemu-system-arm -M versatilepb -nographic -kernel output.bin
  

Hello World!

• run output.bin on qemu with debug:

  $ qemu-system-arm -M versatilepb -nographic -S -gdb tcp::1234 -kernel output.bin
  
  other window:
  $ arm-none-eabi-gdb output.elf
  (gdb)target remote localhost:1234
  (gdb)c
  

reference : http://balau82.wordpress.com/2010/02/28/hello-world-for-bare-metal-arm-using-qemu/

original code : http://atelier-orchard.blogspot.jp/2013/02/arm-qemu.html

enter DOZE and Sleep on ARM chip : http://stackoverflow.com/questions/8555545/how-do-i-enter-doze-and-sleep-mode-on-the-imx27-arm926