arm-none-eabi-as -mcpu=cortex-a8 -g startup.s -o startup.o
arm-none-eabi-gcc -c -mcpu=cortex-a8 -g test.c -o test.o
arm-none-eabi-ld -T test.ld test.o startup.o -o test.elf
arm-none-eabi-objcopy -O binary test.elf bare.bin