initial checkin of debin image builder

diff --git a/build.sh b/build.sh
new file mode 100755 (executable)
index 0000000..3446087
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,216 @@
+#!/bin/bash
+
+# debian image build tool
+# author hackbard@hackdaworld.org
+
+function check_prereq() {
+       # read config
+       [ -f ./config.build ] && . ./config.build
+       # check
+       tc="gcc-`echo $MAKEOPT | sed 's/.*\ CROSS_COMPILE=\(.*\)-.*/\1/'`"
+       deps=0
+       for deb in debootstrap binfmt-support qemu-user-static $tc; do
+               ip=`dpkg -l | grep $deb | awk '{ print $2 }'`
+               if [ -z "$ip" ]; then
+                       echo "package $deb required but not installed"
+                       deps=1
+               fi
+       done
+       if [ "$deps" = "1" ]; then
+               echo "install prerequisites"
+               exit 1
+       fi
+}
+
+function umount_if_mounted() {
+       mnt=$1
+       rpath="`realpath $PWD`"
+       mntpt=`mount | grep $rpath/$mnt | awk '{ print $3 }'`
+       if [ ! -z "$mntpt" ]; then
+               echo "umounting $mntpt"
+               umount $mntpt
+       fi
+}
+
+function build_all {
+       # read config
+       [ -f ./config.build ] && . ./config.build
+       # build stage 1
+       if [ -f .build_stage1 ]; then
+               echo "stage one already done, skipping ..."
+       else
+               echo "building debian image, first stage ..."
+               # image
+               validimg="no"
+               if [ -f ./rootfs.img ]; then
+                       size=`ls -al ./rootfs.img | awk '{ print $5/1048576 }'`
+                       if [ "$size" = "$IMGSIZE" ]; then
+                               echo "rootfs.img exists"
+                               validimg="yes"
+                       else
+                               echo "creating rootfs.img"
+                       fi
+               fi
+               if [ "$validimg" = "no" ]; then
+                       dd if=/dev/zero of=./rootfs.img bs=1M count=$IMGSIZE
+               fi
+               mkfs.${ROOTFS} -f -L rootfs ./rootfs.img
+               # mount
+               umount_if_mounted rootfs.mnt
+               rm -rf rootfs.mnt
+               mkdir rootfs.mnt
+               mount -o loop ./rootfs.img ./rootfs.mnt
+               # debootstrap first part
+               debootstrap --verbose --arch $ARCH --variant=minbase \
+                       --foreign $SUITE rootfs.mnt $DEBMIRROR
+               # copy emulator
+               cp -v `which $EMU` ./rootfs.mnt/usr/bin
+               touch .build_stage1
+       fi
+       # copy myself
+       cp -v ./build.sh ./rootfs.mnt
+       cp -v ./config.build ./rootfs.mnt
+       if [ ! -f .build_stage2 ]; then
+               # prepare/run second stage
+               modprobe binfmt_misc
+               mnts="rootfs.mnt/dev/pts rootfs.mnt/proc"
+               for mnt in $mnts; do 
+                       umount_if_mounted $mnt
+               done
+               mount -t proc proc ./rootfs.mnt/proc
+               mkdir -p ./rootfs.mnt/dev/pts
+               mount -t devpts devpts ./rootfs.mnt/dev/pts
+               chroot ./rootfs.mnt /build.sh chroot
+               #
+               # running build_stage2()
+               #
+               for mnt in $mnts; do 
+                       umount_if_mounted $mnt
+               done
+               touch .build_stage2
+               # cleanup
+               rm -v ./rootfs.mnt/build.sh
+               rm -v ./rootfs.mnt/config.build
+       fi
+}
+
+function build_in_chroot {
+       # read config
+       [ -f ./config.build ] && . ./config.build
+       # build second stage
+       echo "building debian image, second stage ..."
+       [ -f /debootstrap/debootstrap ] && \
+               /debootstrap/debootstrap --second-stage
+       # additional packages + configuration
+       echo "deb ${DEBMIRROR}/ $SUITE main contrib non-free" > \
+               /etc/apt/sources.list
+       echo "deb-src ${DEBMIRROR}/ $SUITE main contrib non-free" >> \
+               /etc/apt/sources.list
+       # run apt
+       apt-get update
+       apt-get -y install $PKGS
+       # locales
+       locale-gen --purge en_US.UTF-8
+       echo 'LANG="en_US.UTF-8"' > /etc/default/locale
+       echo 'LANGUAGE="en_US:en"' >> /etc/default/locale
+       # network
+       echo -en "auto lo\niface lo inet loopback\n" > /etc/network/interfaces
+       echo -en "auto eth0\niface eth0 inet dhcp\n" >> /etc/network/interfaces
+       echo -en "auto usb0\niface usb0 inet dhcp\n" >> /etc/network/interfaces
+       # login on serial console
+       num=`echo $GETTY | sed 's/\([a-zA-Z].*\)\([0-9].*\)/\2/'`
+       echo "T${num}:2345:respawn:/sbin/getty -L $GETTY 115200 linux" >> \
+               /etc/inittab
+       # hostname
+       echo $NAME > /etc/hostname
+       # root
+       echo "/dev/root / $ROOTFS defaults 0 1" > /etc/fstab
+       # behavior of boot scripts      
+       echo "HWCLOCKACCESS=no" >> /etc/default/rcS
+       echo "CONCURRENCY=shell" >> /etc/default/rcS
+       # additional packages
+       apt-get -y install $ADDPKGS
+       # (un)set passwd
+       passwd -d root
+       # profile
+       echo -en "\nalias l='ls -al --color'\n\n" >> /etc/profile
+}
+
+#
+# post chroot tasks
+#
+
+function build_uboot() {
+       [ -f ./config.build ] && . ./config.build
+       git clone $UBSRC
+       cd u-boot
+       if [ ! -z "$UBVER" ]; then
+               git checkout $UBVER
+       fi
+       if [ ! -z "$UBPATCH" ]; then
+               patch -Nfp1 < ../patches/$UBPATCH
+       fi
+       make $MAKEOPT distclean
+       make $MAKEOPT $UBCONF
+       make $MAKEOPT
+       cd ..
+}
+
+function build_kernel() {
+       [ -f ./config.build ] && . ./config.build
+       KV=`echo $KERVER | awk -F. '{
+               if($1=="3") print "3.x"
+               else print$1 "." $2
+       }'`
+       KERSRC="https://www.kernel.org/pub/linux/kernel/"
+       KERSRC="$KERSRC/v$KV/linux-${KERVER}.tar.bz2"
+       wget $KERSRC
+       tar xfj linux-${KERVER}.tar.bz2
+       cd linux-$KERVER
+       if [ ! -z "$KERPATCH" ]; then
+       patch -Nfp1 < ../patches/$PATCH
+       fi
+       make $MAKEOPT mrproper
+       if [ ! -z "$KERHOOK" ]; then
+               $KERHOOK
+       fi
+       if [ ! -z "$KERCONF" ]; then
+               make $MAKEOPT $KERCONF
+       fi
+       make $MAKEOPT zImage
+       make $MAKEOPT modules
+       make $MAKEOPT INSTALL_MOD_PATH=../rootfs.mnt modules_install
+       cd ..
+}
+
+function build_sdcard() {
+       echo "creating sdcard ..."
+}
+
+#
+# main
+#
+
+# configuration        
+if [ ! -f ./config.build ]; then
+       echo "no configuration found, aborting ..."
+else
+       . ./config.build
+fi
+
+# check prerequisites
+check_prereq
+
+# debootstrap
+if [ -z $1 ]; then
+       build_all > ./build.log 2>&1
+elif [ "$1" = "chroot" ]; then
+       build_in_chroot > ./build_in_chroot.log 2>&1
+elif [ "$1" = "uboot" ]; then
+       build_uboot > ./build_uboot.log 2>&1
+elif [ "$1" = "kernel" ]; then
+       build_kernel > ./build_kernel.log 2>&1
+else 
+       echo "unknown option: '$1'"
+fi
+

diff --git a/config.build b/config.build
new file mode 100644 (file)
index 0000000..edb6257
--- /dev/null
+++ b/config.build
@@ -0,0 +1,71 @@
+# debian image build configuration
+
+#
+# size of the image in MB
+#
+# 2GB - 48MB
+IMGSIZE=2000
+
+#
+# target architecture / suite
+#
+ARCH=arm
+#ARCH=armel
+MAKEOPT="ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-"
+#MAKEOPT="ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-"
+EMU=qemu-arm-static
+SUITE=unstable
+
+# name
+NAME=beagleboard
+#NAME=nellboard
+
+#
+# filesystems
+#
+ROOTFS=xfs
+#ROOTFS=ext4
+BOOTFS=ext3
+
+# debian mirror
+DEBMIRROR=http://ftp.de.debian.org/debian
+
+# packages
+PKGS="apt-utils dialog locales"
+
+# serial console
+GETTY=ttyO0
+
+# add your packages here
+ADDPKGS="vim git make gcc lua5.2 golang net-tools iputils-ping kmod"
+ADDPKGS="$ADDPKGS wget openssh-server"
+# beagle
+# nellboard
+#ADDPKGS="$ADDPKGS python dnsmasq" 
+
+#
+# kernel
+#
+# beagleboard
+#  use/copy debian linux-image package!
+# nellboard
+KERVER="2.6.33"
+KERPATCH="linux-2.6.33_lpc313x-v1.01.patch"
+KERCONF="ea313x_defconfig"
+KERHOOK="sed 's/# CONFIG_DEVTMPFS.*/CONFIG_DEVTMPFS=y/' -i ./arch/arm/configs/ea313x_defconfig;"
+KERHOOK="sed 's/# CONFIG_EXT4_FS.*/CONFIG_EXT4_FS=y/' -i ./arch/arm/configs/ea313x_defconfig;"
+KERHOOK="$KERHOOK cp ../files/lpc313x/ea313x.c arch/arm/mach-lpc313x/;"
+
+#
+# u-boot patch and target
+#
+UBSRC="git://git.denx.de/u-boot.git"
+# beagleboard
+#UBSRC=""
+#UBPATCH=""
+UBCONF=omap3_beagle_config
+# nellboard
+#UBVER="v2009.11"
+#UBPATCH="u-boot-2009.11_lpc313x-v1.01.patch"
+#UBCONF="EA3131_config"
+