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- #!/bin/sh -xe
- #Build initramfs image
- # This file is part of PrawnOS (http://www.prawnos.com)
- # Copyright (c) 2018 Hal Emmerich <hal@halemmerich.com>
- # PrawnOS is free software: you can redistribute it and/or modify
- # it under the terms of the GNU General Public License version 2
- # as published by the Free Software Foundation.
- # PrawnOS is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- # You should have received a copy of the GNU General Public License
- # along with PrawnOS. If not, see <https://www.gnu.org/licenses/>.
- outmnt=$(mktemp -d -p `pwd`)
- outdev=/dev/loop7
- KVER=$1
- ROOT_DIR=`pwd`
- build_resources=$ROOT_DIR/resources/BuildResources
- if [ ! -f $ROOT_DIR/PrawnOS-*-c201-libre-2GB.img-BASE ]
- then
- echo "No base filesystem, run 'make filesystem' first"
- exit 1
- fi
- #A hacky way to ensure the loops are properly unmounted and the temp files are properly deleted.
- #Without this, a reboot is sometimes required to properly clean the loop devices and ensure a clean build
- cleanup() {
- set +e
- umount -l $outmnt > /dev/null 2>&1
- rmdir $outmnt > /dev/null 2>&1
- losetup -d $outdev > /dev/null 2>&1
- set +e
- umount -l $outmnt > /dev/null 2>&1
- rmdir $outmnt > /dev/null 2>&1
- losetup -d $outdev > /dev/null 2>&1
- }
- trap cleanup INT TERM EXIT
- losetup -P $outdev $ROOT_DIR/PrawnOS-*-c201-libre-2GB.img-BASE
- #mount the root filesystem
- mount -o noatime ${outdev}p3 $outmnt
- #mount the initramfs partition
- mount -o noatime ${outdev}p2 $outmnt/boot
- #make a skeleton filesystem
- initramfs_src=$outmnt/InstallResources/initramfs_src
- rm -rf $initramfs_src*
- mkdir -p $initramfs_src
- mkdir $initramfs_src/bin
- mkdir $initramfs_src/dev
- mkdir $initramfs_src/etc
- mkdir $initramfs_src/newroot
- mkdir $initramfs_src/proc
- mkdir $initramfs_src/sys
- mkdir $initramfs_src/sbin
- mkdir $initramfs_src/run
- mkdir $initramfs_src/lib
- mkdir $initramfs_src/lib/arm-linux-gnueabihf
- #install the few tools we need, and the supporting libs
- cp $outmnt/bin/busybox $outmnt/sbin/cryptsetup $initramfs_src/bin/
- cp $outmnt/lib/arm-linux-gnueabihf/libblkid.so.1 $initramfs_src/lib/arm-linux-gnueabihf/
- cp $outmnt/lib/arm-linux-gnueabihf/libuuid.so.1 $initramfs_src/lib/arm-linux-gnueabihf/
- cp $outmnt/lib/arm-linux-gnueabihf/libc.so.6 $initramfs_src/lib/arm-linux-gnueabihf/
- cp $outmnt/lib/ld-linux-armhf.so.3 $initramfs_src/lib/
- cp $outmnt/sbin/blkid $initramfs_src/bin/
- #add the init script
- cp $build_resources/initramfs-init $initramfs_src/init
- chmod +x $initramfs_src/init
- #compress and install
- rm -rf $outmnt/boot/PrawnOS-initramfs.cpio.gz
- cd $initramfs_src
- ln -s busybox bin/cat
- ln -s busybox bin/mount
- ln -s busybox bin/sh
- ln -s busybox bin/switch_root
- ln -s busybox bin/umount
- find . -print0 | cpio --null --create --verbose --format=newc | gzip --best > $outmnt/boot/PrawnOS-initramfs.cpio.gz
- cd $ROOT_DIR
- [ ! -d build ] && mkdir build
- cd build
- # store for kernel building
- cp $outmnt/boot/PrawnOS-initramfs.cpio.gz .
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