diff options
Diffstat (limited to 'recipes/linux/linux-hackndev-2.6/palmtx/init')
| -rwxr-xr-x | recipes/linux/linux-hackndev-2.6/palmtx/init | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/recipes/linux/linux-hackndev-2.6/palmtx/init b/recipes/linux/linux-hackndev-2.6/palmtx/init new file mode 100755 index 0000000000..fe4a191603 --- /dev/null +++ b/recipes/linux/linux-hackndev-2.6/palmtx/init @@ -0,0 +1,195 @@ +#!/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 + |