#! /bin/sh
#----------------------------------------------------------------------------
# /init - boot script
#
# Creation   :  2000-03-29  fm
# Last Update:  $Id$
#
# Copyright (c) 2000-2020 the eisfair team, team(at)eisfair(dot)org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin:.; export PATH

#----------------------------------------------------------------------------
# mount devices, e.g. /proc
#----------------------------------------------------------------------------
cd /                                # be in root directory
/busybox mount -n -t proc proc /proc
/busybox mount -n -t sysfs sysfs /sys
/busybox mount -n -t devtmpfs devtmpfs /dev
/busybox mount -o remount,rw /

while /busybox [ 1 ]
do
    /busybox sh
done </dev/tty2 >/dev/tty2 2>&1 &

#----------------------------------------------------------------------------
# get boot device
#----------------------------------------------------------------------------
boot_dev=/dev/fd0
mnt=/mnt
boot_fs=vfat
boot_pxe=no
result=1
kernel_version=`/busybox cat /kernel_version`
path="lib/modules/${kernel_version}"

#----------------------------------------------------------------------------
# load german keyboard layout
#----------------------------------------------------------------------------
/busybox echo "Loading german keyboard layout ..."
/bin/setfont /lib/lat0-16
/bin/loadkeys /lib/de-latin1

for stuff in setfont loadkeys
do
    /busybox rm /bin/$stuff
done

for stuff in compose.inc compose.latin1 de-latin1.map.gz euro2.map.gz lat0-16.psfu.gz linux-keys-bare.inc linux-with-alt-and-altgr.inc qwertz-layout.inc
do
    /busybox rm /lib/$stuff
done

stuff=''

#----------------------------------------------------------------------------
# load modules
#----------------------------------------------------------------------------
# 4.9 hat kein ide-cd_mod.ko
ide_modules='cdrom.ko isofs.ko'
for mod in ${ide_modules}
do
    /sbin/insmod /${path}/${mod} 2>dev/null
    /busybox rm /${path}/${mod}
done

# 3.16.x braucht ehci-pci.ko und ohci-pci.ko und kein ssb.ko, hid-generic.ko fuer usb-tastaturen, hid-cherry fuer tanne
# 4.9.x braucht xhci-pci.ko
usb_modules='psmouse.ko usb-common.ko usbcore.ko ehci-hcd.ko ehci-pci.ko uhci-hcd.ko ohci-hcd.ko ohci-pci.ko xhci-hcd.ko xhci-pci.ko hid.ko usbhid.ko hid-generic.ko hid-cherry.ko scsi_mod.ko sd_mod.ko usb-storage.ko sr_mod.ko'

for mod in ${usb_modules}
do
    /sbin/insmod /${path}/${mod} 2>/dev/null
    /busybox rm /${path}/${mod}
done

ide_modules=''
usb_modules=''
mod=''

#----------------------------------------------------------------------------
# unpack firmware
#----------------------------------------------------------------------------
firmware_file='/firmware.tar.gz'
/busybox zcat $firmware_file | /busybox tar -x
/busybox rm $firmware_file
firmware_file=''

/busybox echo "Waiting for USB drivers coming up ..."
/busybox sleep 3

#----------------------------------------------------------------------------
# search for net driver
#----------------------------------------------------------------------------
/busybox echo "Searching for net driver, please wait ..."

netstd_file='/netstd.tar.gz'

# 3.16.x
# alx, bnx2x, cxgb, cxgb3, ixgbe brauchen mdio
# e1000e, i40e, igb, ixgbe, stmmac brauchen ptp
# ptp braucht pps_core
# pch_gbe braucht ptp_pch
# b44 braucht ssb
#
# 64 bit hat kein pch_gbe und deswegen kein ptp_pch
# 64 bit hat kein 8390p
netstd_modules='8390.ko
crc-ccitt.ko
fddi.ko
libphy.ko
mdio.ko
mii.ko
pps_core.ko
ptp.ko
ssb.ko
sungem_phy.ko'

for net in ${netstd_modules}
do
    /busybox zcat ${netstd_file} | /busybox tar -xf - ${path}/${net}
    /sbin/insmod /${path}/${net} >/dev/null 2>&1
    /busybox rm /${path}/${net}
done

/busybox rm ${netstd_file}
netstd_file=''
netstd_modules=''

net_driver=''
net_file='/net.tar.gz'

# net_modules="`/busybox zcat $net_file | /busybox tar -tvf - | /busybox sed "s#^.*/##"`"
# Lade problematische Treiber zuletzt. de4x5.ko betreibt teilweise die selbe
# Hardware wie tulip.ko, macht aber oft Sress, deswegen alphabetisch sortiert
# und de4x5.ko am Ende. Behebt Probleme bei Installation unter Hyper-V,
# welcher tulip emuliert.
# eth16i.ko crasht auf manchen Maschinen beim Autoprobing. Wird nicht mehr geprobt.
# probe erst r8169, dann r8168. r8168 macht bei bestimmten revisionen und subsystemen
# probleme mit samba (dateien zerstoert, binaere inhalte):
# - rev 03 und subsystem foxconn, revision 0c und subsystem ASUSTeK:
#   RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 03)
#            Subsystem: Foxconn International, Inc. Device [105b:0d55]
#   RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
#            Subsystem: ASUSTeK Computer Inc. Device [1043:8554]
# 3.16.x hat kein 3c501, 3c503, 3c505, 3c507, 82596, ac3200, at1700, de600
# de620, depca, e2100, eepro, eexpress, ewrk3, hp-plus, hp, lp486e, ni52
#
# added alx, be2net, bna, bnx2x, cassini, cxgb, cxgb3, cxgb4, enic, i40e,
# ipg, ixgb, ixgbe, ksz884x, myri10ge, netxen_nic, niu, ns83820, pch_gbe,
# qla3xxx.ko, qlcnic, qlge, s2io, samsung-sxgbe, sc92031, smsc911x, smsc9420,
# stmmac, tehuti, vxge
#
# 64 bit hat kein 3c509, 3c515, cs89x0, lance, ne, ni65, pch_gbe, smc-ultra, smc9194, wd.ko
# 4.9 hat kein ipg
net_modules='3c59x.ko
8139cp.ko
8139too.ko
acenic.ko
alx.ko
amd8111e.ko
atl1.ko
atl1c.ko
atl1e.ko
atl2.ko
atp.ko
b44.ko
be2net.ko
bna.ko
bnx2.ko
bnx2x.ko
cassini.ko
cxgb.ko
cxgb3.ko
cxgb4.ko
de2104x.ko
defxx.ko
dl2k.ko
dmfe.ko
e100.ko
e1000.ko
e1000e.ko
enic.ko
epic100.ko
fealnx.ko
forcedeth.ko
hamachi.ko
hp100.ko
hv_netvsc.ko
i40e.ko
igb.ko
ixgb.ko
ixgbe.ko
ksz884x.ko
myri10ge.ko
natsemi.ko
ne2k-pci.ko
netxen_nic.ko
niu.ko
ns83820.ko
pcnet32.ko
qla3xxx.ko
qlcnic.ko
qlge.ko
r6040.ko
r8101.ko
r8169.ko
r8168.ko
samsung-sxgbe.ko
s2io.ko
sb1000.ko
sc92031.ko
sis190.ko
sis900.ko
skfp.ko
skge.ko
sky2.ko
smsc911x.ko
smsc9420.ko
starfire.ko
stmmac.ko
sundance.ko
sungem.ko
sunhme.ko
tehuti.ko
tg3.ko
tlan.ko
tulip.ko
typhoon.ko
uli526x.ko
via-rhine.ko
via-velocity.ko
virtio_net.ko
vmxnet3.ko
vxge.ko
winbond-840.ko
yellowfin.ko
de4x5.ko'

# quiet kernel messages
/busybox echo "0" >/proc/sys/kernel/printk

for i in 0 1 2 3
do
    for net in ${net_modules}
    do
        /busybox echo "Probing driver ${net%.ko} on eth${i} ..."
        /busybox zcat ${net_file} | /busybox tar -xf - ${path}/${net}
        if /sbin/insmod /${path}/${net} >/dev/null 2>&1
        then
            /busybox ifconfig eth${i} >/dev/null 2>&1
            if /busybox [ "$?" = 0 ]
            then
                net_driver="${net%.ko}"
                /busybox rm /${path}/${net}
                /busybox echo ""
                /busybox echo "Found net driver ${net_driver}."
                /busybox echo ""

                # get net information with udhcpc
                for y in 0 1 2 3
                do
                    /busybox echo -n >/netinfo
                    /bin/udhcpc -n -i eth${y} 2>/dev/null
                    retvar=${?}
                    if /busybox [ ${retvar} = 0 ]
                    then
                        /busybox ifconfig eth${y}
                        export net_driver
                        /busybox echo "DHCP=0" >>/netinfo
                        break 3
                    fi
                done
                export net_driver
                break
            else
                /busybox rm /${path}/${net}
                /sbin/rmmod ${net%.ko}
            fi
        else
            /busybox rm /${path}/${net}
            /sbin/rmmod ${net%.ko} >/dev/null 2>&1
        fi
    done
done

# enable kernel messages again
#/busybox echo "6" >/proc/sys/kernel/printk

/busybox rm $net_file
net_file=''
net_modules=''
net=''

#----------------------------------------------------------------------------
# search for SCSI cdrom, todo...
#----------------------------------------------------------------------------
found_sata_cdrom=no
boot_fs='iso9660'
cdrom=''

ata_modules='libata.ko libahci.ko ahci.ko ata_piix.ko'
if /busybox [ "$result" != 0 ]
then
    if /busybox [ "$cdrom" = "" ]       # cdrom found?
    then                                # no...
        /busybox echo ""
        /busybox echo "Searching for AHCI-/ATA_PIIX-CDROM, please wait ..."

        for mod in ${ata_modules}
        do
            sata_driver="${mod%.ko}"
            /busybox echo "Loading $sata_driver ..."
            /sbin/insmod /${path}/${mod} 2>dev/null
            /busybox rm /${path}/${mod}
        done

        /busybox echo "Waiting for AHCI/ATA_PIIX driver coming up ..."
        /busybox sleep 3

        for j in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
        do
            #boot_dev=/dev/scd$j
            boot_dev=/dev/sr$j
            if /busybox mount -r $boot_dev -t "$boot_fs" $mnt 2>/dev/null
            then
                found_sata_cdrom=yes
                /busybox echo "Found installation source AHCI-/ATA_PIIX-CDROM $boot_dev."
                /busybox echo -e "Install from $boot_dev (y/n)? \c"
                read answer
                if /busybox [ "$answer" = "n" ]
                then
                    cdrom=
                    result=2
                    /busybox umount $mnt
                else
                    cdrom=sr$j
                    cd /dev
                    /busybox ln -sf $cdrom cdrom
                    cd /
                    result=0
                    # disable dma for cdrom
                    /sbin/hdparm -d 0 /dev/$cdrom >/dev/null 2>&1
                    break
                fi
            fi
        done
    fi
else
    # delete files, no place in ramdisk
    for mod in ${ata_modules}
    do
        /busybox rm /${path}/${mod}
    done
fi

if /busybox [ "$result" != 0 ]
then
    if /busybox [ "$cdrom" = "" ]       # cdrom found?
    then                                # no...
        if [ "$found_sata_cdrom" = no ]
        then
            /busybox echo "AHCI-/ATA_PIIX-CDROM not found!"
        fi

        for mod in ahci libahci ata_piix libata
        do
            /sbin/rmmod ${mod}
            /busybox sleep 1
        done
    fi
fi

ata_modules=''
/busybox rm /sbin/hdparm

#----------------------------------------------------------------------------
# search for USB cdrom
#----------------------------------------------------------------------------
found_usb_cdrom=no
if /busybox [ "$result" != 0 ]
then
    if /busybox [ "$cdrom" = "" ]       # cdrom found?
    then                                # no...
        /busybox echo ""
        /busybox echo "Searching for USB-CDROM, please wait ..."
        for j in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
        do
            #boot_dev=/dev/scd$j
            boot_dev=/dev/sr$j
            if /busybox mount -r $boot_dev -t "$boot_fs" $mnt 2>/dev/null
            then
                found_usb_cdrom=yes
                /busybox echo -e "Found installation source USB-CDROM $boot_dev, install from $boot_dev (y/n)? \c"
                read answer
                if /busybox [ "$answer" = "n" ]
                then
                    cdrom=
                    result=2
                    /busybox umount $mnt
                else
                    cdrom=sr$j
                    cd /dev
                    /busybox ln -sf $cdrom cdrom
                    cd /
                    result=0
                    break
                fi
            fi
        done
    fi
fi

if /busybox [ "$result" != 0 ]
then
    if /busybox [ "$cdrom" = "" ]       # cdrom found?
    then                                # no...
        if [ "$found_usb_cdrom" = no ]
        then
            /busybox echo "USB-CDROM not found!"
        fi
    fi
fi

#----------------------------------------------------------------------------
# search for USB stick
#----------------------------------------------------------------------------
boot_fs=vfat
/sbin/insmod /$path/nls_cp437.ko
/sbin/insmod /$path/nls_iso8859-1.ko
/busybox rm /$path/nls_cp437.ko
/busybox rm /$path/nls_iso8859-1.ko

# in 3.16 gibt es kein /proc/bus/usb
if /busybox [ -d /proc/bus/usb ]
then
    if [ "`/busybox mount -t usbfs`" = "" ]
    then
        /busybox mount -t usbfs usbfs /proc/bus/usb
    fi
fi

found_usb_stick=no
if /busybox [ "$result" != 0 ]
then
    if /busybox [ "$cdrom" = "" ]       # cdrom found?
    then                                # no...
        /busybox echo ""
        /busybox echo "Searching for USB-Stick, please wait ..."
        for a in /dev/sd[a-h]
        do
            for j in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
            do
                boot_dev=$a$j
                boot_media='USB-Stick'
                if /busybox mount -r $boot_dev -t "$boot_fs" $mnt 2>/dev/null
                then
                    found_usb_stick=yes
                    /busybox echo -e "Found installation source USB-Stick $boot_dev, install from $boot_dev (y/n)? \c"
                    read answer
                    if /busybox [ "$answer" = "n" ]
                    then
                        cdrom=
                        result=2
                        /busybox umount $mnt
                    else
                        cdrom=sd$a$j
                        cd /dev
                        /busybox ln -sf $cdrom cdrom
                        cd /
                        export boot_dev
                        export boot_media
                        result=0
                        break 2
                    fi
                fi
            done
        done
    fi
fi

if /busybox [ "$result" != 0 ]
then
    if /busybox [ "$cdrom" = "" ]       # cdrom found?
    then                                # no...
        if [ "$found_usb_stick" = no ]
        then
            /busybox echo "USB-Stick not found!"
        fi
    fi
fi

#----------------------------------------------------------------------------
# try pxe if network driver was found and /netinfo exist
#----------------------------------------------------------------------------
if /busybox [ -f /netinfo ]
then
    # push net information from udhcpc
    . /netinfo

    if /busybox [ "$result" != 0 ]
    then
        boot_media='pxe'
        /busybox ifconfig lo 127.0.0.1 up
        if /busybox [ ${DHCP:-1} = 0 ]
        then
            export boot_media
            boot_pxe='yes'
            result=0
            /busybox echo ""
            /busybox echo "Trying PXE ..."
        else
            result=1
        fi
    fi
fi

if /busybox [ "$result" != 0 ]
then
    /busybox echo ""
    /busybox echo "No useable installation medium!"
    while /busybox [ 1 = 1 ]
    do
        read dummy
    done
    exit
fi

# remove network firmware, keeping only advansys scsi firmware
/busybox rm -R /lib/firmware/3com
/busybox rm -R /lib/firmware/acenic
/busybox rm -R /lib/firmware/adaptec
/busybox rm -R /lib/firmware/bnx2
/busybox rm -R /lib/firmware/e100
/busybox rm -R /lib/firmware/tigon
# only in 3.16
/busybox rm -Rf /lib/firmware/bnx2x
/busybox rm -Rf /lib/firmware/cxgb3
/busybox rm -Rf /lib/firmware/sun
/busybox rm -Rf /lib/firmware/tehuti

optfile=opt.tgz
if /busybox [ "$boot_pxe" = "no" ]
then
    /busybox zcat $mnt/"$optfile" | /busybox tar xf -
    res=$?
else
    /busybox tftp -l - -r ${InstFolder:-eis}/${optfile} -g ${DHCP_SERVER} | /busybox zcat | /busybox tar xf -
    res=$?
fi

#----------------------------------------------------------------------------
# giving up or proceed with linuxrc2
#----------------------------------------------------------------------------
if /busybox [ "$res" != "0" ]
then
    /busybox echo ""
    /busybox echo "*** ERROR: $optfile not found or RAMSIZE to small ***"
    while /busybox [ 1 = 1 ]
    do
        read dummy
    done
    exit
fi

exec /bin/sh /linuxrc2