if [ ! -d "at91bootstrap" ]; then
git clone git://github.com/linux4sam/at91bootstrap.git
cd at91bootstrap
git checkout origin/at91bootstrap-3.x -b at91bootstrap-3.x
wget http://www.acmesystems.it/www/compile_at91bootstrap/acme.patch
patch -p1 < acme.patch
else
cd at91bootstrap
git pull
fi

make mrproper
make acme_ariettasd_linux_zimage_dt_defconfig
wget http://watchmysys.com/blog/wp-content/uploads/2014/07/256mb.patch_.txt -O 256mb.patch
patch -p1 < 256mb.patch
make CROSS_COMPILE=arm-linux-gnueabi-