summaryrefslogtreecommitdiff
path: root/target
diff options
context:
space:
mode:
authorgroz <groz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2006-08-18 12:40:47 +0000
committergroz <groz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2006-08-18 12:40:47 +0000
commitb694d99910a6c9a713d246e0791e98a843c35c42 (patch)
tree6660b521b65c7d2cef142fe17e5079e727a84d6a /target
parent219cb829cb3aca742c41fbfa7b54ed681afba986 (diff)
Flesh out early userspace for initramfs to allow booting from media
git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4592 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rwxr-xr-xtarget/linux/generic-2.6/files/init81
1 files changed, 79 insertions, 2 deletions
diff --git a/target/linux/generic-2.6/files/init b/target/linux/generic-2.6/files/init
index 8ca48a04c1..eda776c87d 100755
--- a/target/linux/generic-2.6/files/init
+++ b/target/linux/generic-2.6/files/init
@@ -1,3 +1,80 @@
-#!/bin/ash
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+export PATH=/bin:/sbin:/usr/bin:/usr/sbin
+mount none /proc -t proc
mount none /dev -t devfs
-exec /bin/busybox init
+
+# the root mount point can come from the kernel command line
+# or it can be overridden in the preinit.arch file
+[ -f /etc/preinit.arch ] && . /etc/preinit.arch
+
+# if we have no root parameter, just go to running from ramfs
+[ -z $rootfs ] && {
+ export NOMOUNT="No Root"
+ exec /sbin/init
+}
+
+#if we have a failsafe boot selected, dont bother
+#trying to find or wait for a root mount point
+[ -z "$FAILSAFE" ] || {
+ exec /bin/busybox init
+}
+
+# Load the modules we have in initramfs, this should
+# make the media accessible, but, it may take some time
+. /etc/functions.sh
+load_modules /etc/modules /etc/modules.d/*
+
+#wait 10 seconds for the disc to show up
+#usb stick typically takes 4 to 6 seconds
+#till it's readable
+#it's quite possible the disc never shows up
+#if we netbooted this kernel
+COUNTER=0
+while [ $COUNTER -lt 10 ]; do
+ sleep 1
+ [ -e $rootfs ] && let COUNTER=10;
+ let COUNTER=COUNTER+1
+done
+[ -e $rootfs ] || {
+ export FAILSAFE="NoDisc"
+ exec /bin/busybox init
+}
+
+# now we'll try mount it, again with a timeout
+# This will fail if the inserted stick is formatted
+# in a manner we dont understand
+COUNTER=0
+while [ $COUNTER -lt 10 ]; do
+ sleep 1
+ mount $rootfs /mnt
+ [ $? -eq "0" ] && let COUNTER=100;
+ let COUNTER=COUNTER+1
+done
+[ $? -ne "0" ] && {
+ export FAILSAFE="MountFail"
+ exec /bin/busybox init
+}
+
+#It mounted, lets look for a postinit file, again, give it time
+#I've seen this take 6 seconds to actually complete
+COUNTER=0
+while [ $COUNTER -lt 10 ]; do
+ sleep 1
+ [ -e /mnt/postinit ] && let COUNTER=10;
+ let COUNTER=COUNTER+1
+done
+[ -e /mnt/postinit ] || {
+ export FAILSAFE="No postinit"
+ exec /bin/busybox init
+}
+
+unset rootfs
+
+mount -o move /proc /mnt/proc
+mount -o move /dev /mnt/dev
+mount -o move /tmp /mnt/tmp
+mount -o move /sys /mnt/sys
+
+exec switch_root -c /dev/console /mnt /postinit