Script used to compile kernels for U2

make-kernel.sh

#!/bin/bash
## generate kernel image & modules + u-boot script
## @author neagix
#

set -e

if [ ! $# -eq 1 ]; then
	echo "Please specify kernel directory" 1>&2
	exit 1
fi

## enter such kernel directory
cd $1

## careful: do not set PFIX to empty string!
PFIX=generated
mkdir -p $PFIX
## remove old generated stuff
rm -rfv $PFIX/*

function make_boot() {
	local RAM="2047M" # should be mem=1023M for ODROID-X

(
	echo "setenv initrd_high \"0xffffffff\""
	echo "setenv fdt_high \"0xffffffff\""
	echo "setenv bootcmd \"fatload mmc 0:1 0x40008000 zImage; bootm 0x40008000\""
	echo "setenv bootargs \"console=tty1 console=ttySAC1,115200n8 root=/dev/mmcblk0p2 rootwait ro mem=$RAM\""
	echo "boot"
) > $PFIX/boot.txt || return 1
	sudo mkimage -A arm -T script -C none -n "ODROID-WHEEZY" -d $PFIX/boot.txt $PFIX/boot.scr
}

## start compiling kernel
make -j5 zImage

## after kernel compilation, copy .config
cp -v .config $PFIX/config-`cat include/config/kernel.release`

## copy result of compilation
cp -v arch/arm/boot/zImage $PFIX/zImage-`cat include/config/kernel.release`

## generate modules
make modules -j5

sudo make modules_install

make_boot
sudo cp -v $PFIX/boot.txt $PFIX/boot.scr /boot/

## all backup copies
sudo cp -vi /boot/zImage /boot/zImage-`uname -r`
sudo cp -vi .config /boot/config-`uname -r`

#
# now replace kernel
#

sudo cp -v $PFIX/zImage /boot/zImage