#!/bin/sh
# boot from the hard disk partition "$1" (which
# must be given) using options from the rest of
# the command line.

# Use the standard init path (see /etc/init.d/rcS)
export PATH=/sbin:/bin:/usr/sbin:/usr/bin

# Mount required fileystems if necessary
[ -e /proc/cpuinfo ] || mount -t proc  proc  /proc
[ -e /sys/class    ] || mount -t sysfs sysfs /sys

# Load the helper functions
. /etc/default/functions
. /etc/default/modulefunctions

leds boot system

if test -n "$1"
then
	device="$1"
	shift
        # load USB & SCSI storage modules (/proc required!)
        echo "boot: loading modules required for disk boot"
        loaddiskmods
	# waiting for disk
	if test "$sleep" -gt 0
	then
		echo "boot: waiting $sleep seconds for disk"
		sleep "$sleep"
	fi
	# Attempt to assemble the RAID if necessary
	if (echo $device | grep -q "^/dev/md")
	then
		if test -n "$MDUUID"
		then
			echo "boot: assembling RAID array (UUID)"
			mdadm -Acpartitions --auto=md --uuid="$MDUUID" $device
		else
			echo "boot: assembling RAID array (config file)"
			mdadm -As --auto=md $device
		fi
	fi

	# fire the boot
	echo "boot: rootfs: mount $* $device [$UUID]"

	# Mount read-write because before exec'ing init
	# If a UUID is given (in the environment) this
	# is used in preference to the device, but if
	# the UUID mount fails a standard device mount
	# is attempted.
	if	test -n "$UUID" &&
		mount "$@" UUID="$UUID" /mnt ||
		mount "$@" "$device" /mnt
	then
		# checkmount checks for sh, chroot, init, /dev
		# and /mnt (i.e. /mnt/mnt in this case).
		# minimaldevnodes checks (and creates if required)
		# a few mandatory /dev nodes we may need.
		if checkmount /mnt && minimaldevnodes /mnt
		then
			# pivot to /initrd if available, else /mnt
			cd /
			if test -d /mnt/initrd
			then
				swivel mnt initrd
			else
				swivel mnt mnt
			fi
			# swivel failed
		fi
		# Failure: unmount the partition
		umount /mnt
		# Remount /proc and /sys if necessary
		[ -e /proc/cpuinfo ] || mount -t proc  proc  /proc
		[ -e /sys/class    ] || mount -t sysfs sysfs /sys
	fi
fi

# fallback - use the flash boot
leds beep -f 1000 -r 2
exec /boot/flash