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#!/bin/sh
# $Id: $
# authors: Cristiano P.
#
# TODO: echo only if VERBOSE
# TODO: check the whole thing ...
# defaults:
VERBOSE=true
FORCE_FSCK=false
UMOUNT_FILES_DEV=false
FILES_DEV=/dev/mmcblk0p1
FILES_MNT=/mnt/mmc
ROOT_DEV=$FILES_MNT/opie-image-v0.8.4-palmtx.rootfs.ext2
SWAP_DEV=none
MODULES_DIR="/lib/modules"
POST_MODULES_SCRIPT=""
echo mounting sysfs
mount -n -t sysfs sys /sys >/dev/null 2>&1 || mount -t sysfs sys /sys
echo mounting proc filesystem
mount -n -t proc none /proc >/dev/null 2>&1 || mount -t proc none /proc
# try to get model name from /proc/cpuinfo
MODEL_NAME=`awk -F: '/Hardware/ { print $2 }' </proc/cpuinfo | sed 's/^ *//;s/ *$//'`
[ $VERBOSE = "true" ] && echo Model name: $MODEL_NAME
# device specific configuration
case $MODEL_NAME in
"Palm TX")
FILES_MNT=/media/mmc1
;;
"Palm LifeDrive")
HDD_DEV=/dev/hda
HDD_OFFSET=91814912
LOOP_DEV=/dev/loop0
;;
*)
;;
esac
echo initram init started
if [ -f /etc/modules.initrd ]; then
echo loading initial modules
cat /etc/modules.initrd | while read module; do
echo loading module: $module
/sbin/insmod $MODULES_DIR/$module > /dev/null
done
fi
# device specific actions ...
case $MODEL_NAME in
"Palm LifeDrive")
echo Mounting LifeDrive data partition...
losetup -o $HDD_OFFSET $LOOP_DEV $HDD_DEV
FILES_DEV=$LOOP_DEV
FILES_MNT=/mnt/hda
;;
*)
;;
esac
if [ -b $FILES_DEV ]; then
FILES_DEV_MOUNTED=false
echo -n "attempting to mount $FILES_DEV: "
/bin/mount -t vfat -o rw $FILES_DEV $FILES_MNT > /dev/null 2>&1
[ $? ] && FILES_DEV_MOUNTED=true
if [ $FILES_DEV_MOUNTED = "true" ]; then
echo "mounted on $FILES_MNT."
/bin/sleep 1
echo -n "sourcing linux.boot.cfg: "
# todo: check parameters/files?
if [ -f $FILES_MNT/linux.boot.cfg ]; then
echo found.
. $FILES_MNT/linux.boot.cfg
if [ -f $FILES_MNT/modules.initrd ]; then
echo loading additional modules now:
cat $FILES_MNT/modules.initrd | while read module; do
loading module: $module
/sbin/insmod $MODULES_DIR/$module > /dev/null
done
fi
else
echo not found.
fi
else
echo "could not mount."
FILES_DEV_MOUNTED=false
fi
else
echo device $FILES_DEV not found.
FILES_DEV_MOUNTED=false
fi
# this script could be used to update the rootfs before booting familiar (new modules, scripts, config, ...)
echo -n "post_module script: "
if [ -n "$POST_MODULES_SCRIPT" ]; then
if [ -f "$POST_MODULES_SCRIPT" ]; then
echo found $POST_MODULES_SCRIPT .
$POST_MODULES_SCRIPT
fi
else
echo not found.
fi
# probably swap should/can be enabled by familiar (add to /etc/fstab?)
# is it the right place to mount swap?
if [ -n "$SWAP_DEV" -a $SWAP_DEV != "none" ]; then
echo -n "mount swap at $SWAP_DEV: "
if [ -f $SWAP_DEV -o -b $SWAP_DEV ]; then
/sbin/swapon $SWAP_DEV > /dev/null 2>&1
echo done.
else
echo not found.
fi
else
echo "no swap specified."
fi
# force fsck if specified
if [ $FORCE_FSCK = "true" ]; then
echo "checking rootfs [$ROOT_DEV]"
if [ $VERBOSE = "true" ]; then
/sbin/e2fsck -f -y $ROOT_DEV
else
/sbin/e2fsck -f -y $ROOT_DEV > /dev/null 2>&1
fi
fi
echo -n "mounting rootfs: "
# todo: calculate root dev id? (256*major + minor)
if [ -f $ROOT_DEV ]; then
#echo 0x701 > /proc/sys/kernel/real-root-dev
mount -n $ROOT_DEV /newroot -o rw loop 2>/dev/null
[ $? ] && ROOT_MOUNTED=true
# this shouldn't be possible if image is on FILES_DEV
UMOUNT_FILES_DEV=false
elif [ -b $ROOT_DEV ]; then
mount -n $ROOT_DEV /newroot -o rw 2>/dev/null
[ $? ] && ROOT_MOUNTED=true
else
echo "not a file or a block device."
ROOT_MOUNTED=false
fi
# TODO: should initial /dev (/oldroot/dev) be unmounted after init by GPE?
if [ $ROOT_MOUNTED = "true" ]; then
echo mounted
# umount mmc if forced by UMOUNT_FILES_DEV
if [ $UMOUNT_FILES_DEV = "true" -a $FILES_DEV_MOUNTED = "true" ]; then
umount -l $FILES_DEV
[ $? ] && FILES_DEV_MOUNTED=false
[ $FILES_DEV_MOUNTED = "false" ] && echo "$FILES_DEV umounted"
fi
# move mmc's mount point on new rootfs
if [ $FILES_DEV_MOUNTED = "true" ]; then
echo moving $FILES_MNT to /newroot$FILES_MNT
mount --move $FILES_MNT /newroot$FILES_MNT
fi
# force umount sys and proc
umount -l /sys
umount -l /proc
# method 2: use switch_root (needs initramfs)
exec /sbin/switch_root -c /dev/console /newroot /sbin/init 5
echo "* * * switch_root failed! * * *"
else
echo "failed!"
echo could not mount root fs: init failed!
echo please, reset, check your configuration and retry.
sleep 100000
fi
# TODO: run ezhikov's keyshell here?
exec /bin/sh
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