#!/bin/sh
# 2001-11-27 Rafael Skodlar
# manage kernel versions for different platforms

HOME=/root
# source variables for kernel handling
VARS=$HOME/bin/VARS.kernel

source $VARS

DATE=`date '+%Y-%m-%d'`
TIME1=`date '+%H:%M'`

[ ! -d $TMP_KERNEL ] && mkdir -p $TMP_KERNEL
[ ! -d $ARCH_DIR ] && mkdir -p $ARCH_DIR

function configure()
{
    cd $KERNEL_DIR
    echo -e "=============== Kernel configure (xconfig) =============\n" > ${COMPILE_LOG}
    make xconfig
    [ ! -e $ARCH_DOT ] && cp $KERNEL_DIR/.config $ARCH_DOT
}

function mconfigure()
{
    cd $KERNEL_DIR
    echo -e "=============== Kernel configure (menuconfig) ==========\n" > ${COMPILE_LOG}
    make menuconfig
    [ ! -e $ARCH_DOT ] && cp $KERNEL_DIR/.config $ARCH_DOT
}

function compile()
{
    cd $KERNEL_DIR
    echo -e "=============== Kernel compile time $DATE =============\n" > ${COMPILE_LOG}
    echo -e "Start: $TIME1" >> ${COMPILE_LOG}
    cp $KERNEL_DIR/.config $TMP_KERNEL/config.${DATE}-${TIME1}
    make clean
    make dep
    make bzImage 2>&1 >> ${COMPILE_LOG}.tmp

TIME2=`date '+%H:%M'`
    echo -e " Stop: $TIME2" >> ${COMPILE_LOG}
    cat ${COMPILE_LOG}.tmp >> ${COMPILE_LOG}
    rm ${COMPILE_LOG}.tmp
    if [ -e "$BZIMAGE" ]; then
        cp $BZIMAGE $TMP_KERNEL/vmlinuz-${VER}
    	rdev -v $TMP_KERNEL/vmlinuz-${VER} 1
    	rdev $TMP_KERNEL/vmlinuz-${VER} $ROOT_DEV
    else
        echo -e "======================================================================\n\tWARNING! Kernel did not compile or other error.\n"
	echo -e "\tMissing: $BZIMAGE !!!"
        echo -e "======================================================================"
        exit 1
    fi
    # Save .config and keep track of it
    echo "$DATE $VER $ARCH" >> $ARCH_LOG
}

function initrd()
{
    [ -e "$INITRD" ] && mv $INITRD $INITRD.${DATE}-${TIME1}
    mkinitrd $INITRD $VER
}

function modules()
{
    cd $KERNEL_DIR
    make modules 2>&1 >> $COMPILE_LOG
    make modules_install 2>&1 >> $COMPILE_LOG
    echo "============================= tar modules" >> $COMPILE_LOG
    tar cvfp $MODULES_TAR $MODULES >> $COMPILE_LOG
}

function kernelftar()
{
    # tar kernel + whatever on floppy
    if [ -s "$KTAR" -o -s "${KTAR}.gz" ]; then
	cd $TMP_KERNEL
	echo -e "======================================================================\n\tTar kernel + utils ---> $FTAR.\n"
	tar cvfM $FTAR ${KTAR}.gz
    echo -e "\n\tcomplete\n======================================================================\n"
    else
	echo -e "Missing: ${KTAR} or\n${KTAR}.gz"
	exit 1
    fi
}

function save_kernel()
{
    # Save .config for future reference and kernel with modules
    cp -p $KERNEL_DIR/.config $ARCH_DOT
    if [ -e "$KTAR" -o "${KTAR}.gz" ]; then
	cp ${KTAR}* $ARCH_DIR
    else
	echo "Missing: ${KTAR}*"
	exit 1
    fi
}

function mk_tgz()
{
	# create tar of all compiled files and utilities
        cd /
        tar cvfp $KTAR $TMP_KERNEL/vmlinuz-${VER} $TOOLS
        [ -e $MODULES_TAR ] && tar rvfp $KTAR $MODULES_TAR
        [ -e $INITRD ] && tar rvfp $KTAR $INITRD
	gzip $KTAR
	ls -l ${KTAR}.gz
}

function securecopy()
{
    # copy bzImage to remote system
    echo scp -p ${KTAR}* $ADMIN@${SYSTEM}:$DST
    scp ${KTAR}* $ADMIN@${SYSTEM}:$DST
}

case $1
in
    -xc)
	configure
        ;;

    -mc)
	mconfigure
        ;;

    -ma)
	compile
	modules
	initrd
	mk_tgz
	[ -e $COMPLETE ] &&  play $COMPLETE
        ;;

    -mk)
	compile
	[ -e $COMPLETE ] &&  play $COMPLETE
        ;;

    -mm)
	modules
	[ -e $COMPLETE ] &&  play $COMPLETE
        ;;

    -f)
	kernelftar
	;;

    -mi)
	initrd
	;;

    -sc)
	[ $# -eq 2 ] && SYSTEM=$2
	securecopy
        ;;

    -tgz)
	mk_tgz
	[ -e $COMPLETE ] &&  play $COMPLETE
        ;;

    -sk)
        save_kernel
	;;

    -clean)
        rm -rf $TMP_KERNEL
        ;;

    *)
        cat << EOM
=====================================================================
Usage:
$0 [option]
                   -xc (xconfig)
                   -mc (menuconfig)
                   -ma (make all [kernel + modules + tar])
                   -mk (make kernel, i.e. compile)
                   -mm (make modules + install under /lib/modules)
                   -mi (make initrd {RAM disk})
                   -tgz (compress $KTAR)
                   -f (tar kernel+mod+util on floppy)
                   -s (scp $KTAR to host: $SYSTEM)
                   -sc (scp $KTAR to host: ???)
                   -sk (save kernel bzImage in $ARCH_DIR)
                   -clean (remove $TMP_KERNEL)

Current setup:
---------------------------------------------------------------------
 KERNEL_DIR= $KERNEL_DIR
        LOG= $LOG
        VER= $VER (kernel version)
       ARCH= $ARCH (Architecture [motherboard])

     SYSTEM= $SYSTEM    (remote system for kernel install)
      ADMIN= $ADMIN             (administrator account on remote system)
        DST= $DST       (destination directory for scp on remote system)

COMPILE_LOG= $COMPILE_LOG
   ROOT_DEV= $ROOT_DEV
        TAR= $KTAR

Edit $VARS for correct variables:
VER (ex.: 2.4.17)
ARCH (architecture = tyan_S2505T, ASUSxxx, Intel810)

EOM

        ;;
esac

#EOS