#!/bin/sh

# This file is part of getbootstate
#
# Copyright (C) 2007,2008 Nokia Corporation. All rights reserved.
#
# Contact: Peter De Schrijver <peter.de-schrijver@nokia.com>
#
# This software, including documentation, is protected by copyright controlled by Nokia Corporation. All rights are reserved.
# Copying, including reproducing, storing, adapting or translating, any or all of this material requires the prior written
# consent of Nokia Corporation. This material also contains confidential information which may not be disclosed to others
# without the prior written consent of Nokia.

FS_MODULES="mbcache ext2 jbd ext3"
MODULE_PATH=/lib/modules/current

echo_g()
{
	echo "getbootstate: $1"
}

init_system()
{
        mount -t proc none /proc
        mount -t sysfs none /sys
        mount -t tmpfs none -o size=512K /tmp

        mkdir /tmp/dev

	# The twl4030 can either be named twl4030-adc or twl4030-madc.
	# So we check for both.

	madc_minor=$(grep twl4030-adc /proc/misc | cut -d " " -f 2)
	
	if [ -z $madc_minor ] ; then
		madc_minor=$(grep twl4030-madc /proc/misc | cut -d " " -f 2)
	fi

	if [ -n $madc_minor ] ; then
		mknod /tmp/dev/twl4030-adc c 10 $madc_minor
	fi
}

fini_system()
{
	if [ "$have_ptys" = "1" ] ; then
		umount /dev/pts
	fi
	umount /sys
	umount /tmp
	# /etc/mtab is linked /proc/mounts, and unmount tries to change
	# /etc/mtab which causes warnings. To prevent them, we unmount /proc
	# last and direct its warning message to /dev/null
	umount /proc 2> /dev/null
	if [ -e /proc/mounts ]; then
		rm -f /proc/mounts # remove stray mounts
	fi
}

set_default_root_params() {
        root_dev=mtdblock4
        root_dev_name="Flash"
        root_fstype="jffs2"
        root_fsoptions="rpsize=1024,rpuid=0,rpuid=30000"
        root_mounted=1
}

check_partitions()
{
        grep mtdblock4 /proc/partitions >/dev/null
        if [ $? = 0 ] ; then
                mtd_found=1
        else
                mtd_found=0
        fi

        grep sda1 /proc/partitions >/dev/null
        if [ $? = 0 ] ; then
                sda_found=1
        else
                sda_found=0
        fi

        grep mmc /proc/partitions >/dev/null
        if [ $? = 0 ] ; then
                mmc_found=1
        else
                mmc_found=0
        fi
}

search_root_onmmc() {
# if user set up mmc booting, try to find the first mmc device
# which contains /sbin/init, it will be used as root
# also fallback to the mtdblock4 (our flash)

        parts=`awk '{print $4}' /proc/partitions | grep 'mmcblk[0-9][0-9]*p[0-9]'`
        [ -z "$parts" ] && return 1

        for i in $parts; do
                if mount_device "$i"; then
                        if [ -x /mnt/new_root/sbin/init ]; then
                                root_dev="$i"
                                return 0;
                        fi
                        umount_device "$i"
                fi
        done
        return 1

}

show_roots()
{
        echo "Choose bootup option:"
        if [ $mtd_found -eq 1 ]; then
                echo "  1) Flash"
        fi
        if [ $mmc_found -eq 1 ]; then
                echo "  2) MMC"
        fi
        if [ $sda_found -eq 1 ]; then
                echo "  3) USB Mass Storage Device"
        fi
        echo "  9) Start a shell"
        echo ""
}

start_pty_system() {
	if [ -e /dev/ptmx ] ; then
		rm /dev/ptmx
	fi
	mknod /dev/ptmx c 5 2
	chmod 666 /dev/ptmx

	if [ ! -d /dev/pts ] ; then 
		mkdir /dev/pts
	fi
	mount -t devpts devpts -o gid=5,mode=620 /dev/pts

	have_ptys=1
}

start_shell()
{
	# Make sure we have PTY system supported, so that we would support ssh
	# connections
	start_pty_system

        echo "Starting shell"

	# We use getty instead of just running /bin/sh because we want to have
	# job control working (e.g., we want Ctrl-C). With /bin/sh this does
	# not work, not sure why. Note, "-n -l /bin/sh" options make sure
	# that username/passeord are not asked for.
	/sbin/getty 115200 ttyS0 -n -l /bin/sh
}

show_rd_versions()
{
        bg_color=0xffff
        y=0
        x=0
        line_height=20

        text2screen -c -x 0 -y 0 -w 800 -h 160
        text2screen -t "Kernel version:" -s 2 -x $x -y $y -B $bg_color
        y=$(expr $y + $line_height)
        text2screen -t "  `uname -r` " -s 2 -x $x -y $y -B $bg_color
        y=$(expr $y + $line_height)
        text2screen -t "  `uname -v`" -s 2 -x $x -y $y -B $bg_color

        y=$(expr $y + $line_height + $line_height)
        text2screen -t " no initfs \o/" -s 2 -x $x -y $y -B $bg_color

        y=340
        text2screen -c -y 320 -x 0 -w 320 -h 120
        text2screen -t "Component versions:" -x $x -y $y -s 2 -B $bg_color
        y=$(expr $y + $line_height)
        while read line ; do
                text2screen -t "  $line" -x $x -y $y -s 2 -B $bg_color
                y=$(expr $y + $line_height)
        done < /proc/component_version
}

load_mmc_modules()
{
        for mod in $FS_MODULES ; do
                if [ -f $MODULE_PATH/$mod.ko ]; then
                        insmod $MODULE_PATH/$mod.ko
                fi
        done
}

prepare_core() {
	if [ -f /etc/osso_software_version ] ; then 
		release=`cat /etc/osso_software_version`
		echo "/media/mmc1/core-dumps/%e-%s-%p-$release.core" >/proc/sys/kernel/core_pattern
	fi
	ulimit -c unlimited
}

mount_device() {
	echo_g "Mounting $1"
        root_dev="$1"

        [ -z "$root_dev" ] && return 1
	if [ ! -e /mnt/new_root ]; then
		mkdir -p /mnt/new_root	
	fi

        if [ -z $root_fstype ]; then
                if [ -z $root_fsoptions ]; then
                        time mount /dev/$root_dev /mnt/new_root
                else
                        time mount -o $root_fsoptions /dev/$root_dev /mnt/new_root
                fi
        else
                if [ -z $root_fsoptions ]; then
                        time mount -t $root_fstype /dev/$root_dev /mnt/new_root
                else
                        time mount -t $root_fstype -o $root_fsoptions /dev/$root_dev /mnt/new_root
                fi
        fi
        grep -q new_root /proc/mounts
}

umount_device() {
         grep -q "$1"  /proc/mounts  && umount /dev/$1
}

mount_new_root()
{
        if ! grep -q new_root /proc/mounts; then
                mount_device "$root_dev"
        fi
}

enter_state()
{
	echo active > /sys/devices/platform/gpio-switch/cmt_bsi/state
	STATE=`getbootstate`
	echo_g "Entering state '$STATE'."
	case $STATE in 
		BOOT)
			def_runlevel=6
			;;
		USER|FLASH)
			def_runlevel=2
			;;
		ACT_DEAD)
			def_runlevel=5
			;;
		LOCAL|TEST)
			def_runlevel=3
			;;
		SHUTDOWN)
			def_runlevel=0
			;;
		*)
	                if [ $rd_mode -ne 0 ]; then
       				start_shell
				return
               		fi
			echo_g "Houston, we have a problem, powering off..."
			text2screen -c -x 0 -y 0 -h 80 -w 800
			text2screen -t "Malfunction !" -x 0 -y 0 -s 4
			text2screen -t "Device shutdown in 10s" -x 0 -y 20 -s 4
			sleep 10
			poweroff
			def_runlevel=0
			;;
	esac
}

boot()
{
        if [ $root_mounted -ne 1 ]; then
                mount_new_root
                if [ $? -ne 0 ]; then
                        return 1
                fi
                cd /mnt/new_root
                if [ ! -d mnt/initfs ]; then
                        mkdir -p mnt/initfs
                fi
		fini_system
		pivot_root . mnt/initfs
		CHROOT="/usr/sbin/chroot ."
	else
                if [ ! -x /sbin/init ]; then
                        echo_g "/sbin/init not found on root device"
                        return 1
                fi
		fini_system
	fi
	
	# let me see then, what thereat is and this mistery explore
	/sbin/fiasco-do-update

	exec $CHROOT /sbin/init $def_runlevel <dev/console >dev/console 2>&1
}

read_cfg_from_file()
{
	CFG=/etc/pmconfig

	awk -f /sbin/read_cfg.awk $CFG
}

init_system

read_cfg_from_file

# set UART timeout to 10s
echo 10 > /sys/devices/platform/serial8250.0/sleep_timeout

# Change ownership to allow locking for pulseaudio
chown pulse:pulse /sys/power/vdd2_lock

serial_console=0
rd_mode=$(cal-tool --get-rd-mode 2> /dev/null)
if [ "$rd_mode" = "enabled" ]; then
        rd_mode=1
        echo_g "R&D mode enabled"
        show_rd_versions
	if [ $(cal-tool -f | sed 's/,/\n/g' | grep serial-console) = "serial-console" ] ; then
		serial_console=1;
	fi
	# enable sleep mode indication leds
	echo active > /sys/devices/platform/gpio-switch/sleep_ind/state
	awk '/sleep_ind/{ if ($2 == 1) { VALUE="active"; } else { VALUE="inactive"; } print VALUE > "/sys/devices/platform/gpio-switch/sleep_ind/state"  }' < /etc/pmconfig
else
        rd_mode=0
fi

prepare_core

enter_state

want_menu=0
root_mounted=0
if [ $serial_console -ne 0 ]; then
        echo_g "Press any key for interactive startup"
        key_pressed 1
        if [ $? -ne 0 ]; then
                want_menu=1
        fi
fi

if [ $want_menu -ne 1 ]; then
        default_root=$(cal-tool --get-root-device 2> /dev/null)
        set_default_root_params
        SLIDE_STATE=`cat /sys/devices/platform/gpio-switch/slide/state`
        if [ x"$SLIDE_STATE" = "xopen" ] ; then
		echo_g "slide open, attempting to use bootmenu"
		[ -f /bootmenu.sh ] && . /bootmenu.sh
        fi
                                 
        case "$default_root" in
        mmc) 
                load_mmc_modules
                if search_root_onmmc; then
                        root_dev_name="MMC"
                        root_dev_set=1
                        root_fstype=""
                        root_fsoptions=""
                else
                        echo_g "No mmc root found, try default"
                        set_default_root_params
                fi
                ;;
        usb)
                root_dev=sda1
                root_dev_name="USB hard drive"
                root_dev_set=1
                root_fstype=""
                root_fsoptions=""
                ;;
        esac
        boot
fi

root="invalid"
while [ true ]; do
        check_partitions
        show_roots
        root_dev_set=0
        read root
        case "$root" in
            1)
                set_default_root_params
	    	root_dev_set=1
                ;;
            2)
                if search_root_onmmc; then
                        root_dev_name="MMC"
                        root_dev_set=1
                        root_fstype=""
                        root_fsoptions=""
                else
                        echo_g "Could not find suitable partition for root on mmc"
                fi
                ;;
            3)
                root_dev=sda1
                root_dev_name="USB hard drive"
                root_dev_set=1
                root_fstype=""
                root_fsoptions=""
                ;;
            9)
                start_shell
                ;;
            *)
                echo_g "Invalid selection"
                ;;
        esac
        if [ $root_dev_set -eq 1 ]; then
                boot
        fi
done