File _service:repo:init-debug of Package droid-hal-nuc

#!/bin/sh
#
# Hybris adaptation bootstrapping initramfs init script.
#
# Copyright (c) 2014 Jolla Oy
#
# 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.
#
# Author:
#   - Tom Swindell <t.swindell@rubyx.co.uk>
#   - David Greaves <david@dgreaves.com>
#

# General logging
set -x
exec > /init.log 2>&1
echo "Running Mer Boat Loader"

set_welcome_msg(){
cat <<EOF >> /etc/issue.net
Welcome to the Mer/SailfishOS Boat loader debug init system.

Log so far is in /init.log

EOF
}

export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin

# Default setting is rndis - add mass_storage for a debug boot
# enable using usb_setup
USB_FUNCTIONS=rndis

ANDROID_USB=/sys/class/android_usb/android0
LOCAL_IP=192.168.2.1

DONE_SWITCH=yes

# Minimal mounts for initrd or pre-init debug session
do_mount_devprocsys()
{
    echo "########################## mounting devprocsys"
    mkdir /dev
    mount -t devtmpfs devtmpfs /dev
    # telnetd needs /dev/pts/ entries
    mkdir /dev/pts
    mount -t devpts devpts /dev/pts

mkdir /proc
    mkdir /sys
    mount -t sysfs sysfs /sys
    mount -t proc proc /proc
}

# Sugar for accessing usb config
write() {
  echo -n "$2" > "$1"
}

# This sets up the USB with whatever USB_FUNCTIONS are set to
usb_setup() {
      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      18D1
      write $ANDROID_USB/idProduct     D001
      write $ANDROID_USB/iManufacturer "Mer Boat Loader"
      write $ANDROID_USB/iProduct      "$CUSTOMPRODUCT"
      write $ANDROID_USB/iSerial       "$1"
      write $ANDROID_USB/functions     $USB_FUNCTIONS
      write $ANDROID_USB/enable        1
}
# This lets us communicate errors to host (if it needs disable/enable then that's a problem)
usb_info() {
    # make sure USB is settled
    echo "########################## usb_info: $1"
    sleep 1
    write $ANDROID_USB/iSerial       "$1"
}

run_debug_session() {
    CUSTOMPRODUCT=$1
    echo "########################## Debug session : $1"
    usb_setup "Mer Debug setting up (DONE_SWITCH=$DONE_SWITCH)"

USB_IFACE=notfound
    /sbin/ifconfig usb0   $LOCAL_IP && USB_IFACE=usb0
    /sbin/ifconfig rndis0 $LOCAL_IP && USB_IFACE=rndis0
    # Report for the logs
    /sbin/ifconfig

# Unable to set up USB interface? Reboot.
    if [ x$USB_IFACE = xnotfound ]; then
        usb_info "Mer Debug: ERROR: could not setup USB as usb0 or rndis0"
        dmesg
        sleep 60 # plenty long enough to check usb on host
        reboot -f
    fi

echo "interface $USB_IFACE" >> /etc/udhcpd.conf
    # Be explicit about busybox so this works in a rootfs too
    echo "########################## starting dhcpd"
    $EXPLICIT_BUSYBOX udhcpd

set_welcome_msg
    # Non-blocking telnetd
    echo "########################## starting telnetd"
    # We run telnetd on different ports pre/post-switch_root This
    # avoids problems with an unterminated pre-switch_root telnetd
    # hogging the port
    $EXPLICIT_BUSYBOX telnetd -p $TELNET_DEBUG_PORT -l /bin/sh
}

# We're in the real rootfs running as init-debug
EXPLICIT_BUSYBOX="/bin/busybox-static"
TELNET_DEBUG_PORT=2323

do_mount_devprocsys

run_debug_session "Persistent telnetd"

# If we don't do this then udev will not be able to create /dev/block/*
rm /dev/block

# Now try to boot the real init
exec /sbin/init --log-level=debug --log-target=kmsg &> /boot/systemd_stdouterr