#!/bin/sh
# Quick and dirty NAND init by Rajko
# modified by rafpigna to add ext data mount
# modified to increase speed and I/O
# modified to support some configs on boot
# 20 jan 2011
# 
# please if you use my work, send me a line
# and write my name somewhere
# v2 - 1 Feb 2011
#
# modified to add a2sd support from Dark Tremor
# so that the phone doesn't boot loop and users 
# can change on the fly
# 22 Fen 2010 - arif-ali

fail() {
    echo "Failed"
    echo "$1"
    exec /bin/sh
}

exec_init() {
    # cleanup
	umount /system
	umount /data
	sleep 1
	umount /bootsdcard
	rmdir /bootsdcard
    # execute android init 
    exec /init.android
}

echo "Booting linux from NAND partitions"

mount -t proc proc /proc
mount -t sysfs sys /sys
mkdir -m 0777 /dev/block
mknod -m 0666 /dev/block/mmcblk0 b 179 0
mknod -m 0666 /dev/block/mmcblk0p1 b 179 1
mknod -m 0666 /dev/block/mmcblk0p2 b 179 2
# wait for sdcard
while [ ! -b /dev/block/mmcblk0 ]; do
	sleep 1
done
sleep 2




#Configure Devices
MAKEDEVS

PATH=/sbin:/bin:/system/sbin:/system/bin:/system/xbin:/system/xbin/bb:/data/local/bin


echo "Mounting debugfs"
mount -t debugfs none /dbgfs
echo "Activating backlight control..."
echo 3 > /sys/class/htc_hw/test
echo "Enabling smooth scrolling..."
echo 40 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold
echo "Activating full charging..."
echo 2 > /dbgfs/htc_battery/charger_state
echo 1024 > /dbgfs/micropklt_dbg/sleep_leds
echo "+++++++ Tweaking MMC read-ahead by Rafpigna +++++++"
mmcfolder="/sys/devices/platform/msm_sdcc.2/mmc_host/mmc1"
cd $mmcfolder
folderlist=`ls -1`
mmcresult=`echo $folderlist | grep -o '\bmmc1:\w*' | sed 's/mmc1://'`
echo 32 > /sys/devices/platform/msm_sdcc.2/mmc_host/mmc1/mmc1:$mmcresult/block/mmcblk0/queue/read_ahead_kb
echo "+++++++ Auto-off keyled backlight by Rafpigna +++++++"
echo 0 > /sys/devices/platform/btn_backlight_manager/auto_off


####################################################
###### configs  on boot ############################
###### idea by Dandiest, modified by me (rafpigna) #
####################################################

#first, mount sd card
# assume single partition, if found partition 1 use that	
echo "+++++++ STARTING UPDATE SCRIPT +++++++"
echo "+++++++ MOUNTING SD CARD +++++++"
sdcard_partition=mmcblk0
[ -d /sys/block/mmcblk0/mmcblk0p1 ] && sdcard_partition=mmcblk0p1
# run fsck
# dosfsck -y /dev/block/$sdcard_partition
# mount sdcard
mkdir -m 0700 /bootsdcard
mount -t vfat -o fmask=0111,dmask=0000,rw,utf8,noatime,nodiratime /dev/block/$sdcard_partition /bootsdcard || bootsdcard=0
sleep 1
if [ $bootsdcard -eq 0 ]; then
    # cleanup
    rmdir /bootsdcard
    rm -f /dev/block/mmcblk0
    rm -f /dev/block/mmcblk0p1
    rm -f /dev/block/mmcblk0p2
    # run init
    exec_init
fi

# prepare
data_dir=/bootsdcard
init_log=/bootsdcard/init.log
update_dir=/bootsdcard/updates

# clear previous init.log
if [ -f $init_log ]; then
    rm -f $init_log
fi

  echo "+++++++ READING CONFIG FILE +++++++"
# read config file
config_file=$data_dir/config.txt
if [ -f $config_file ]; then
    config=`awk -v RS='\r\n' -v ORS=' ' 1 $config_file`
    gps_zone=`echo $config | grep -o '\bgps_zone=\w*' | sed 's/gps_zone=//'`
    ppp_mode=`echo $config | grep -o '\bppp_mode=\w*' | sed 's/ppp_mode=//'`
    sd_boost=`echo $config | grep -o '\bsd_boost=\w*' | sed 's/sd_boost=//'`
    a2sd_mode=`echo $config | grep -o '\ba2sd_mode=\w*' | sed 's/a2sd_mode=//'`
fi

#write the values to logfile to have possibility to check if they are right
  echo "gps_zone" >> $init_log
  echo $gps_zone >> $init_log
  echo "ppp_mode" >> $init_log
  echo $ppp_mode >> $init_log
  echo "sd_boost" >> $init_log
  echo $sd_boost >> $init_log
  echo "a2sd_mode" >> $init_log
  echo $a2sd_mode >> $init_log


# load default value
[ -z $ppp_mode ] && ppp_mode=0
[ -z $sd_boost ] && sd_boost=0
[ -z $a2sd_mode ] && a2sd_mode="dalvik"
[ -z $gps_zone ] && gps_zone="us"

  echo "+++++++ MOUNTING MTD SYSTEM +++++++"
# define partitions
system_partition=`grep system /proc/mtd | cut -d: -f1 | sed 's/mtd/mtdblock/'`
mount -t yaffs2 -o rw /dev/block/$system_partition /system >> $init_log
data_partition=`grep userdata /proc/mtd | cut -d: -f1 | sed 's/mtd/mtdblock/'`
mount -t yaffs2 -o rw /dev/block/$data_partition /data >> $init_log
  echo "+++++++ MOUNTED MTD SYSTEM +++++++" >> $init_log


#20 jan 2011
#ext3 can be mounted as ext4 with that option improving performances without major drawbacks
#reference: https://wiki.archlinux.org/index.php/Ext4#Mounting_ext3_Partitions_as_ext4_Without_Converting

#if second partition exists, mount it as data. if not exists, uncomment line in init.rc to mount data on yaffs
#also init.rc must be changed to mount /data on nand userdata if ext partition does not exists
if [ -d /sys/block/mmcblk0/mmcblk0p2 ] ; then
    echo "Ext partition found. Mounting data on EXT"
    echo "Ext partition found. Mounting data on EXT" >> $init_log

    # Added by arif-ali
    # set a2sd mode
    if [ "$a2sd_mode" == "a2sd" ]; then
	echo "+++++++ a2sd ACTVATED +++++++" >> $init_log
	echo "+++++++ a2sd ACTVATED +++++++"
	rm -rf /data/.noa2sd
        rm -rf /data/.dalvikcache
    elif [ "$a2sd_mode" == "dalvik" ]; then
	echo "+++++++ dalvik a2sd ACTVATED +++++++" >> $init_log
	echo "+++++++ dalvik a2sd ACTVATED +++++++"
        rm -rf /data/.noa2sd
	touch /data/.dalvikcache
    elif [ "$a2sd_mode" == "data" ]; then
  	echo "+++++++ data a2sd ACTVATED +++++++" >> $init_log
	echo "+++++++ data a2sd ACTVATED +++++++"
        rm -rf /data/.noa2sd
	touch /data/.dalvikcache
	touch /data/.datasd
    elif [ "$a2sd_mode" == "none" ]; then
        touch /data/.noa2sd
  	echo "+++++++ a2sd DEACTVATED - running from NAND +++++++" >> $init_log
	echo "+++++++ a2sd DEACTVATED - running from NAND +++++++"
    else
        echo "+++++++ Default a2sd ACTVATED +++++++" >> $init_log
        echo "+++++++ Default a2sd ACTVATED +++++++"
        rm -rf /data/.noa2sd
        rm -rf /data/.datasd
        touch /data/.dalvikcache
    fi

    # Added by rafpigna
#    if [ $sd_boost -eq 1 ] ; then
#	echo "+++++++ SD BOOST ACTIVE +++++++"
#	echo "+++++++ SD BOOST ACTIVE +++++++" >> $init_log
#	/bin/tune2fs -O ^has_journal /dev/block/mmcblk0p2 >> $init_log
#	e2fsck -y -v -f /dev/block/mmcblk0p2 >> $init_log
#	/bin/tune2fs -O ^huge_file /dev/block/mmcblk0p2	>> $init_log
#	e2fsck -y -v -f /dev/block/mmcblk0p2 >> $init_log
#	/bin/tune2fs -l /dev/block/mmcblk0p2 >> $init_log
#    else
#	echo "+++++++ SD BOOST NOT ACTIVE +++++++"
#	echo "+++++++ SD BOOST NOT ACTIVE +++++++" >> $init_log
#	/bin/tune2fs -O has_journal /dev/block/mmcblk0p2 >> $init_log 
#	e2fsck -y -v -f /dev/block/mmcblk0p2 >> $init_log
#	/bin/tune2fs -O huge_file /dev/block/mmcblk0p2	>> $init_log
#	e2fsck -y -v -f /dev/block/mmcblk0p2 >> $init_log
#	/bin/tune2fs -l /dev/block/mmcblk0p2 >> $init_log
#    fi

    echo "+++++++ MOUNTED DATA ON EXT +++++++"
    echo "+++++++ MOUNTED DATA ON EXT +++++++" >> $init_log
else
    echo "Ext partition not found. disabling a2sd"
    echo "Ext partition not found. disabling a2sd" >> $init_log
    sed -i 's|#mount yaffs2 mtd@userdata /data nosuid nodev noatime nodiratime|mount yaffs2 mtd@userdata /data nosuid nodev noatime nodiratime|' /init.rc
    echo "+++++++ MOUNTED DATA ON NAND +++++++" >> $init_log
    echo "+++++++ MOUNTED DATA ON NAND +++++++"
fi

# set gps zone
if [ "$gps_zone" != "" ]; then
    current_gps_zone=`awk -F"=" '/NTP_SERVER/ {print $2}' /system/etc/gps.conf`
    [ "$gps_zone.pool.ntp.org" != "$current_gps_zone" ] && sed -i "s/$current_gps_zone/$gps_zone.pool.ntp.org/g" /system/etc/gps.conf
    echo "+++++++ GPS ZONE CHANGED +++++++" >> $init_log
    echo "+++++++ GPS ZONE CHANGED +++++++"
fi

# set ppp or rmnet
if [ $ppp_mode -eq 1 ] ; then
  sed -i 's/nand_init .*/nand_init /' /init.rc 
  #sed -i 's|insmod /system/lib/modules/msm_rmnet.ko|#insmod /system/lib/modules/msm_rmnet.ko|' /system/etc/init.d/01modules
  touch /system/ppp
  echo "+++++++ PPP MODE ACTIVATED +++++++" >> $init_log
  echo "+++++++ PPP MODE ACTIVATED +++++++"
else
  sed -i 's/nand_init .*/nand_init rmnet_mode /' /init.rc
  #sed -i 's|#insmod /system/lib/modules/msm_rmnet.ko|insmod /system/lib/modules/msm_rmnet.ko|' /system/etc/init.d/01modules    
echo "+++++++ RMNET MODE ACTIVATED +++++++"
echo "+++++++ RMNET MODE ACTIVATED +++++++" >> $init_log
  rm -rf /system/ppp
fi

####################################################
###### configs  on boot ############################
###### idea by Dandiest, modified by me (rafpigna) #
####################################################
###################### END #########################

######################################################
# boot into Android
# init shell finally done
######################################################
exec_init