recovery-init

#!/bin/sh

##############################################################################
#
# This file is part of Jolla recovery console
#
# Copyright (C) 2013-2015 Jolla Ltd.
# Copyright (c) 2021 Open Mobile Platform LLC.
# Originally written by Andrea Bernabei
# Contact: Igor Zhbanov <igor.zhbanov@jolla.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 2 as published by the Free Software Foundation
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
##############################################################################

export PATH=/sbin:/bin:/usr/bin:/usr/sbin
ANDROID_USB=/sys/class/android_usb/android0
GADGET_DIR=/config/usb_gadget
USB_FUNCTIONS=rndis
LOCAL_IP=10.42.66.66


write()
{
	echo -n "$2" > $1
}

# Get options from kernel command line
get_opt()
{
    for param in $(cat /proc/cmdline); do
        echo "$param" | grep "^$1=*" | cut -d'=' -f2
    done
}

# This sets up the USB with whatever USB_FUNCTIONS are set to via configfs
usb_setup_configfs() {
    G_USB_ISERIAL=$GADGET_DIR/g1/strings/0x409/serialnumber
    mkdir $GADGET_DIR/g1
    write $GADGET_DIR/g1/idVendor                   "0x2931"
    write $GADGET_DIR/g1/idProduct                  "0x0A06"
    mkdir $GADGET_DIR/g1/strings/0x409
    write $GADGET_DIR/g1/strings/0x409/serialnumber "$1"
    write $GADGET_DIR/g1/strings/0x409/manufacturer "Jolla"
    write $GADGET_DIR/g1/strings/0x409/product      "Recovery"

    if echo $USB_FUNCTIONS | grep -q "rndis"; then
        mkdir $GADGET_DIR/g1/functions/rndis.rndis0
        mkdir $GADGET_DIR/g1/functions/rndis_bam.rndis
    fi

    mkdir $GADGET_DIR/g1/configs/c.1
    mkdir $GADGET_DIR/g1/configs/c.1/strings/0x409
    write $GADGET_DIR/g1/configs/c.1/strings/0x409/configuration "$USB_FUNCTIONS"

    if echo $USB_FUNCTIONS | grep -q "rndis"; then
        ln -s $GADGET_DIR/g1/functions/rndis.rndis0 $GADGET_DIR/g1/configs/c.1
        ln -s $GADGET_DIR/g1/functions/rndis_bam.rndis $GADGET_DIR/g1/configs/c.1
    fi

    udc="$(get_opt androidboot.usbcontroller | head -1)"
    if [ -z "$udc" ]; then
        for udc_path in /sys/class/udc/* ; do
            case "$udc_path" in
                *dummy) true ;;
                *) udc="${udc_path##*/}" ; break ;;
            esac
        done
    fi
    # Force peripheral mode by default
    write /sys/class/udc/"$udc"/device/../mode peripheral
    echo "$udc" > $GADGET_DIR/g1/UDC
}

# This sets up the USB with whatever USB_FUNCTIONS are set to via android_usb
usb_setup_android_usb() {
    G_USB_ISERIAL=$ANDROID_USB/iSerial
    write $ANDROID_USB/enable          0
    write $ANDROID_USB/functions       ""
    write $ANDROID_USB/enable          1
    usleep 500000 # 0.5 delay to attempt to remove rndis function
    write $ANDROID_USB/enable          0
    write $ANDROID_USB/idVendor        2931
    write $ANDROID_USB/idProduct       0A06
    write $ANDROID_USB/iManufacturer   "Jolla"
    write $ANDROID_USB/iProduct        "Recovery"
    write $ANDROID_USB/iSerial         "$1"
    write $ANDROID_USB/functions       $USB_FUNCTIONS
    write $ANDROID_USB/enable          1
}

# This determines which USB setup method is going to be used
usb_setup() {
    if [ -f $ANDROID_USB/enable ]; then
        usb_setup_android_usb $1
    else
        usb_setup_configfs $1
    fi
}

usb_info() {
    # make sure USB is settled
    echo "########################## usb_info: $1"
    sleep 1
    write $G_USB_ISERIAL "$1"
}

set -o allexport
. /etc/sysconfig/init
. /etc/sysconfig/display
. /usr/bin/functions.sh
. /usr/bin/recovery-functions.sh
set +o allexport

echo "Doing mounts... "
mount /dev
mkdir /dev/pts
mount -a
cat /proc/mounts > /etc/mtab

mkdir /config
mount -t configfs none /config

echo "Loading kernel modules..."

load_kernel_modules

#Run mdev
echo "Running mdev..."
mdev -s


#Set mdev as hotplug manager
echo /bin/mdev > /proc/sys/kernel/hotplug


# Minimize power consumption by lowering display brightness to minimum
write $DISPLAY_BRIGHTNESS_PATH $DISPLAY_BRIGHTNESS



usb_setup "Jolla Debug setting up"

ip link set rndis0 up
ip link set usb0 up
if ipaddr add 10.42.66.66/29 broadcast 10.42.66.255 dev rndis0 ; then
    USB_IFACE=rndis0
elif ipaddr add 10.42.66.66/29 broadcast 10.42.66.255 dev usb0 ; then
    USB_IFACE=usb0
else
    usb_info "Jolla Debug: ERROR: could not setup USB as usb0 or rndis0"
    dmesg
    sleep 60 # plenty long enough to check usb on host
    reboot -f
fi
ipaddr add 192.168.2.15/24 broadcast 192.168.2.255 dev $USB_IFACE label rndis0:0

sed -i "s/@IFACE@/$USB_IFACE/g" /etc/udhcpd.conf
udhcpd

echo V > /dev/watchdog


usb_info "Jolla Debug telnet on $USB_IFACE $LOCAL_IP - also running udhcpd"
yamui -t "RECOVERY: Connect USB cable and open telnet to address $LOCAL_IP" &

# Remove recovery-menu lock if the /var/run is not on tmpfs.
remove_lock

echo "Starting telnetd..."
telnetd -l/usr/bin/recovery-menu &

echo "Starting yamui-screensaverd..."
/usr/bin/yamui-screensaverd &

sleep 86400