#!/bin/sh

# cest73@ya.ru under ISC license for Slackware-current 2017 onward
#

image="zImage"
installpath=`pwd`"/installdir"

echo "seeking for the assumed linaro toolchain:"
####
#
# comment out this section to save on time
#
#####
for check in $(ls -d *linaro*)
do
  if [ -f $check ]; then
    echo "we seem to have to decompress an archive here:"
    tar -xf $check && echo "extracted."
  elif [ -d $check ]; then
    echo "we seem to have an directory to delete here:"
    rm -rf $check && echo "deleted."
  else
    echo "you have to download an appropriate toolchain for this script."
    echo "try from:  https://releases.linaro.org/components/toolchain/binaries/"
    echo "Or on:     https://linux-sunxi.org/Toolchain."
    echo "Good luck."
    exit 2
  fi
done
#####
#
# up to here - if you don't change the toolchain
#
####
for recheck in $(ls -d *linaro*)
do
  if [ -f $recheck ]; then
    echo
  elif [ -d $recheck ]; then
    toolchain=$recheck
  fi
done
echo "Toolchain:["$toolchain"]"

export KBUILD_OUTPUT=`pwd`/kernel-build

export CC=`pwd`/${toolchain}/bin/arm-linux-gnueabihf-

${CC}gcc --version

echo "we are building here:"
echo ${KBUILD_OUTPUT}
# comment out next two lines to preserve the ouput across invocations
mkdir -vp ${KBUILD_OUTPUT}
rm -vrf ${KBUILD_OUTPUT}/*
#

echo "Preparing sources:"

for kcheck in $(ls -d *linux*)
do
  if [ -f $kcheck ]; then
    echo "we seem to have to decompress the kernel sources here:"
    tar -xf $kcheck && echo "extracted."
     STREE=`echo "$kcheck" | sed "s/.tar.*//"`
  elif [ -d $kcheck ]; then
    echo "we seem to have an directory to delete here:"
    rm -rf $kcheck && echo "deleted."
  else
    echo "you have to download an appropriate kernel source for this script."
    echo "try from:  https://www.kernel.org/"
    echo "Good luck."
    exit 2
  fi
done
echo "Detected: ["$STREE"]"

VER=`echo ${STREE} | awk -F- '{print $2}'`"-armv7"
# don't worry about the extension - compression is auto detected
archive=`pwd`/"kernel-${VER}.tar.xz"

echo "entering source tree"
cd $STREE

our_target=""

#real loaders here:

make ARCH=arm CROSS_COMPILE=${CC} distclean

#make ARCH=arm CROSS_COMPILE=${CC} ${our_target}

# this is so we can load any alternate config while not changing this file:
# ../<default> is a cood option
# just place that ".config" alongide this script
 make ARCH=arm CROSS_COMPILE=${CC} nconfig

time make -j4 ARCH=arm CROSS_COMPILE=${CC} modules

time make -j4 ARCH=arm CROSS_COMPILE=${CC} zImage

echo "if all went well, here we have the image ready"

rm -vrf ${installpath}/*
echo "we are installing here:"
echo ${installpath}
mkdir -vp ${installpath}/boot


file=${KBUILD_OUTPUT}"/arch/arm/boot/"${image}
if [ -a $file ]; then
  echo "copying image:"
  ls -h $file
  cp $file $installpath"/boot/${image}-${VER}"
else
  echo "error, no valid output"
  exit 1
fi

sysmap=${KBUILD_OUTPUT}/"System.map"
if [ -a $sysmap ]; then
  echo "copying System map:"
  ls -h $sysmap
  cp $sysmap $installpath"/boot/System-${VER}.map"
else
  echo "something went wrong"
  exit 1
fi

kconfig=${KBUILD_OUTPUT}/".config"
if [ -a $kconfig ]; then
  echo "copying Kernel config"
  ls -h $kconfig
  cp $kconfig $installpath"/boot/config-${VER}"
else
  echo "something else went wrong"
  exit 1
fi

echo "copying modues:"

export INSTALL_MOD_PATH=$installpath

time make -s -j4 ARCH=arm CROSS_COMPILE=${CC} modules_install

echo "everything is ready for packing now:"
if rm -v $archive; then
  echo "...the stale archive"
fi

# we try make all files referenced relative to /
# further, we're  converting all files into 
# root:root on the fly while archiving:
time tar --owner=0:0 -caf $archive -C $installpath .

echo "all ready for shippiong now:"
ls -lah $archive

#server 127.127.1.0     # local clock
#fudge  127.127.1.0 stratum 10

# GPS Serial data reference
#server 127.127.28.0
#fudge 127.127.28.0 time1 0.9999 refid GPS

server 127.127.28.0 minpoll 4 maxpoll 4 prefer
fudge 127.127.28.0 refid GPS stratum 4
fudge 127.127.28.0 time1 0.113  # coarse processing delay offset
fudge 127.127.28.0 flag1 1      # ignore difference limit

# GPS PPS reference
#server 127.127.28.1 prefer
#fudge 127.127.28.1 refid PPS

# NTP server (list one or more) to synchronize with:
#server 0.pool.ntp.org iburst
#server 1.pool.ntp.org iburst
#server 2.pool.ntp.org iburst
#server 3.pool.ntp.org iburst
statsdir /var/lib/ntp/stats
logfile /var/log/ntp
driftfile /var/lib/ntp/drift
pidfile /var/run/ntpd.pid
restrict default limited kod nomodify notrap nopeer noquery
restrict -6 default limited kod nomodify notrap nopeer noquery

# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*SHM(0)          .GPS.            4 l    4   16  377    0.000   63.712  90.701

options fbtft_device custom name=sainsmart18 gpios=dc:18,reset:2,led:19 speed=16000000 busnum=1 rotate=90

[snip]
/sbin/modprobe fbtft_device custom name=sainsmart18 gpios=dc:18,reset:2,led:19 speed=16000000 busnum=1 rotate=90
[snip]

[snip]
#and route display to it:
con2fbmap 1 0
[snip]

[snip]
fbcon=map:10 fbcon=font:MINI4x6 3
[snip]

$ neofetch 
                  :::::::                      root@orpi.eth.lan 
            :::::::::::::::::::                ----------------- 
         :::::::::::::::::::::::::             OS: Slackware 14.2 arm (post 14.2 -current) armv7l 
       ::::::::cllcccccllllllll::::::          Host: Xunlong Orange Pi Zero 
    :::::::::lc               dc:::::::        Kernel: 4.19.20-armv7 
   ::::::::cl   clllccllll    oc:::::::::      Uptime: 39 mins 
  :::::::::o   lc::::::::co   oc::::::::::     Packages: 1014 (pkgtool) 
 ::::::::::o    cccclc:::::clcc::::::::::::    Shell: bash 5.0.0 
 :::::::::::lc        cclccclc:::::::::::::    Terminal: /dev/pts/1 
::::::::::::::lcclcc          lc::::::::::::   CPU: Allwinner sun8i Family (4) @ 1.008GHz 
::::::::::cclcc:::::lccclc     oc:::::::::::   Memory: 55MiB / 495MiB 
::::::::::o    l::::::::::l    lc:::::::::::
 :::::cll:o     clcllcccll     o:::::::::::                            
 :::::occ:o                  clc:::::::::::
  ::::ocl:ccslclccclclccclclc:::::::::::::
   :::oclcccccccccccccllllllllllllll:::::
    ::lcc1lcccccccccccccccccccccccco::::
      ::::::::::::::::::::::::::::::::
        ::::::::::::::::::::::::::::
           ::::::::::::::::::::::
                ::::::::::::

#!/bin/sh

# make full screen
#wmctrl -r tangoGPS -b add,fullscreen

#bring to workspace, exact position and size
wmctrl -r tangoGPS -e 0,-55,0,241,138

#include <unistd.h>

int main()
{
  execlp( "login", "login", "-f", "<put your username here>", 0);
}

$ gcc main.c -o autologin

#!/bin/bash

# echo pathing up:
PATH="~/bin:"$PATH
export PATH

# echo $PATH

echo "Starting X server as this user:"
startx

#!/bin/bash
echo additional configuration

echo aliasing:
alias ls="ls --color"
alias mc="mc -S gotar"
alias mcedit="mcedit -S gotar"
alias xterm="xterm -rv -sb -rightbar"

PS1="[\u@\h:\w (\$(lsbytesum) Mb)]\$ "

# echo pathing up:
PATH="~/bin:"$PATH
export PATH

# echo $PATH
case $(setterm -blank) in
0)
  echo no blank terminal detected
  ;;
*)
  echo blanked terminal detected
  setterm -blank poke
  ;;
esac

echo "Starting X server as this user:"
startx

#!/bin/sh
# $XConsortium: xinitrc.cpp,v 1.4 91/08/22 11:41:34 rws Exp $

userresources=$HOME/.Xresources
usermodmap=$HOME/.Xmodmap
sysresources=/etc/X11/xinit/.Xresources
sysmodmap=/etc/X11/xinit/.Xmodmap

# merge in defaults and keymaps

if [ -f $sysresources ]; then
    xrdb -merge $sysresources
fi

if [ -f $sysmodmap ]; then
    xmodmap $sysmodmap
fi

if [ -f $userresources ]; then
    xrdb -merge $userresources
fi

if [ -f $usermodmap ]; then
    xmodmap $usermodmap
fi

# Start the window manager:
#if [ -z "$DESKTOP_SESSION" -a -x /usr/bin/ck-launch-session ]; then
#  exec ck-launch-session /usr/bin/startblackbox
#else
#  exec /usr/bin/startblackbox
#fi

# do away with undue mouse pointers:
/usr/bin/unclutter --timeout 5 --exclude-root --ignore-scrolling --fork

#perpetual run
loopd tangogps X &

#perpetual center
loopd /home/cest/bin/center tangogps &

exec blackbox

# ISC cest73@ya.ru 
# maintain a process running alongside another one

Maintain=$1
Expect=${2:-init}

waste () {
  for (( n= 0 ; n < 5 ; n++ )) {
    sleep 2
    echo -ne "."
  }
}

if [ "X$Maintain" == "X" ]; then
 echo "Usage $ loopd {maintain} [expect]"
 exit 1
fi

echo -ne "Checking for ${Expect}\n"
until pgrep ${Expect} 1> /dev/null ; do
  echo -ne "\r             \rWaiting"
  waste
done

while true; do
  ${Maintain}
  echo -ne "\r                    \rExited, pausing"
  waste
done

echo "Done"