mkkern

#!/bin/ksh
#
# flashrd mkkern
#
# create luscious ramdisk version of (GENERIC - config.strip)
#
# Chris Cappuccio <chris@nmedia.net>
#

###
#
# blocks

[ -z "$blocks" ] && blocks=4600

###
#
# rdrootfs

if [ -z "$rdroot" -a -z "$1" ]; then
 echo "% mkkern <$blocks rdrootfs>"
 exit 1
fi

[ -z "$rdroot" ] && rdroot=$1

if [ ! -f $rdroot ]; then
 echo % $rdroot is not a file
 exit 1
fi

###
#
# kernel source

[ -z "$kernsrc" ] && kernsrc=/usr/src/sys/arch/`uname -m`

if [ ! -d $kernsrc ]; then
 echo % $kernsrc not found
 exit 1
fi

###
#
# elfrdsetroot

[ -z "$elfrdsetrootdir" ] && elfrdsetrootdir="./elfrdsetroot/"

if [ ! -d $elfrdsetrootdir ]; then
 echo % elfrdsetrootdir $elfrdsetrootdir not found
 exit 1
fi

###
#
# GENERIC config

if [ ! -f $kernsrc/conf/GENERIC ]; then
 echo % $kernsrc/conf/GENERIC config not found
 exit 1
fi

###
#
# exit 1 harness

0() {
 exit 1
}

. ./flashrd.sub

[ -z "$tmpmnt" ] && tmpmnt=$(c 0 mktemp -t -d mkkern.tmpmnt.XXXXXX)

###
#
# remove option POOL_DEBUG from /usr/src/sys/conf/GENERIC (slower allocation!)
# modify /usr/src/sys/arch/`uname -m`/conf/GENERIC

grep -v POOL_DEBUG /usr/src/sys/conf/GENERIC > /usr/src/sys/conf/FLASHRD
# if you want POOL_DEBUG, do this instead:
#cp /usr/src/sys/conf/GENERIC /usr/src/sys/conf/FLASHRD

egrep -v ^config $kernsrc/conf/GENERIC | sed -e 's/GENERIC/FLASHRD/' > $kernsrc/conf/FLASHRD

if [ `uname -m` == "i386" ]; then
	echo "option	NKPTP=16" >> $kernsrc/conf/FLASHRD
fi
# OpenBSD 5.4 defines this to 16 automatically. So give up for now, since 
# the 'option' ability still requires a custom patch.
#if [ `uname -m` == "amd64" ]; then
#	echo "option	NKL2_KIMG_ENTRIES=16" >> $kernsrc/conf/FLASHRD
#fi
cat >> $kernsrc/conf/FLASHRD <<-EOF
	option	RAMDISK_HOOKS
	option	MINIROOTSIZE=$blocks
	config	bsd	root on rd0a swap on rd0b and wd0b and sd0b
	pseudo-device	rd 1
	EOF

sed -e 's/GENERIC/FLASHRD/' $kernsrc/conf/GENERIC.MP > $kernsrc/conf/FLASHRD.MP

if [ -f config.strip ]; then
 while read line; do

  line=${line%%#*}              # strip comments
  test -z "$line" && continue

  sed -e "s/^$line//" < $kernsrc/conf/FLASHRD > $kernsrc/conf/FLASHRD.tmp
  mv $kernsrc/conf/FLASHRD.tmp $kernsrc/conf/FLASHRD
 done < config.strip
else
 echo "[no config.strip found for kernel config alterations]"
 # XXX isn't the isadma space relocated to 1MB now (at least on i386)???
 echo "[ramdisk kernel may be too large to boot without disabling isadma for i386/amd64]"
fi

###
#
# compile ELFRDSETROOT first (so we can bail out if it fails without waiting for GENERIC)

c 0 cc -o $elfrdsetrootdir/elfrdsetroot $elfrdsetrootdir/elfrdsetroot.c $elfrdsetrootdir/elf32.c $elfrdsetrootdir/elf64.c

###
#
# compile our version of GENERIC

T=$(c 0 mktemp -t mkkern.FLASHRD.XXXXXX)
TMP=$(c 0 mktemp -t mkkern.FLASHRD.MP.XXXXXX)

echo -n Configuring FLASHRD, FLASHRD.MP kernels
wd=`pwd`
cd $kernsrc/conf
c 0 "config FLASHRD >$T 2>&1"
c 0 "config FLASHRD.MP >$TMP 2>&1"
echo

unset ALTCC
[ -n "$CC" ] && ALTCC="CC=$CC "

echo -n Compiling FLASHRD kernel
cd $kernsrc/compile/FLASHRD
echo -n " (make depend)"
c 0 "make depend > $TMPDIR/last.output 2>&1"
if grep "make clean" $T >/dev/null; then
 echo -n " (make clean)"
 c 0 "make clean > $TMPDIR/last.output 2>&1"
fi
echo -n " (make)"
c 0 "make ${ALTCC}-j$(($(sysctl -n hw.ncpu) + 1))> $TMPDIR/last.output 2>&1"
c 0 cp bsd $tmpmnt/bsd
echo

echo -n Compiling FLASHRD.MP kernel
cd $kernsrc/compile/FLASHRD.MP
echo -n " (make depend)"
c 0 "make depend > $TMPDIR/last.output 2>&1"
if grep "make clean" $TMP >/dev/null; then
 echo -n " (make clean)"
 c 0 "make clean > $TMPDIR/last.output 2>&1"
fi
echo -n " (make)"
c 0 "make ${ALTCC}-j$(($(sysctl -n hw.ncpu) + 1))> $TMPDIR/last.output 2>&1"
c 0 cp bsd $tmpmnt/bsd.mp
echo

###
#
# run elfrdsetroot

cd $wd
c 0 $elfrdsetrootdir/elfrdsetroot $tmpmnt/bsd $rdroot
c 0 $elfrdsetrootdir/elfrdsetroot $tmpmnt/bsd.mp $rdroot
c 0 rm $elfrdsetrootdir/elfrdsetroot