#!/bin/sh

PATH=/usr/sbin:/usr/bsd:/sbin:/usr/bin:/bin:/etc:/usr/etc

prog=`basename $0`

usage="Usage: $prog [--help] [--auto] [--disk busnum devnum] [--diskless] [--boothost host] [--dist path] [--root path] [--swap] [--skiprepart] [--hdrsize megs] [--swapsize megs] [--cachesize megs] [--hostname hostname] [--ipaddr ipaddr]"

#
# Parse arguments.
#
while [ -n "$1" ]; do
    case "$1" in

    --help)
	echo $usage
	exit 0;;

    --auto)
	AIS_AUTO=1;;

    --disk)
	AIS_BUS=$2
	AIS_DEV=$3
	shift 2;;

    --diskless)
	AIS_MODE=diskless;;

    --dist)
	AIS_DIST=$2
	shift;;

    --root)
	AIS_ROOT=$2
	shift;;

    --boothost)
	AIS_BOOTHOST=$2
	shift;;

    --swap)
	AIS_MODE=swap;;

    --skiprepart)
	AIS_REPARTITION=0;;

    --hdrsize)
	AIS_HDRSIZE=$2
	shift;;

    --swapsize)
	AIS_SWAPSIZE=$2
	shift;;

    --cachesize)
	AIS_CACHESIZE=$2
	shift;;

    --hostname)
	AIS_HOST=$2
	shift;;

    --ipaddr)
	AIS_ADDR=$2
	shift;;

    *)
	echo "$prog: Unknown option $1"
	echo $usage
	exit 1;;
    esac
    shift
done

#
# Set up default values (default to internal disk, swap partition, mount
# on /root, prompt for inputs).
#
AIS_CPUBOARD=${AIS_CPUBOARD:-`uname -m`}
AIS_OSVERSION=${AIS_OSVERSION:-`uname -r`}

eval `hinv | awk '\
    /CPU: MIPS/			{ p = $3 }				\
    /Graphics board:/		{ g = $3 }				\
    /graphics installed/	{ g = $1 }				\
    END			{ printf("AIS_CPU=%s; AIS_GRAPHICS=%s", p, g); }'`

# MODLOADAFS is separated because AFS is still a bit broken in 6.3.
case ${AIS_OSVERSION} in
    6.2)
	AIS_SYS=${AIS_SYS:-sgi_62}
	AIS_OPSSYS=${AIS_OPSSYS:-62}
	AIS_SYSTEM=IRIX62
	AIS_MODLOADAFS=${AIS_MODLOADAFS:-1}
	;;
    6.3)
	AIS_SYS=${AIS_SYS:-sgi_63}
	AIS_OPSSYS=${AIS_OPSSYS:-63}
	AIS_SYSTEM=IRIX63
	AIS_MODLOADAFS=${AIS_MODLOADAFS:-0}
	;;
    *)
	echo "$0: unknown operating system version (${AIS_OSVERSION})"
	exit 1
	;;
esac

case ${AIS_CPUBOARD} in
    IP22)
	AIS_MACHINE=INDY
	;;
    IP32)
	AIS_MACHINE=O2
	;;
    *)
	echo "$0: unknown CPU board (${AIS_CPUBOARD})"
	exit 1
	;;
esac

AIS_VERSION=0.9.1
AIS_ROOTFSTYPE=${AIS_ROOTFSTYPE:-xfs}
AIS_AUTO=${AIS_AUTO:-0}
AIS_BUS=${AIS_BUS:-0}
AIS_UTIL=${AIS_UTIL:-/ais}
AIS_DEV=${AIS_DEV:-1}
AIS_ATHENAVERS=${AIS_ATHENAVERS:-8.1}
AIS_DIST=${AIS_DIST:-/install}
AIS_BASE=${AIS_BASE:-${AIS_DIST}}
AIS_LIB=${AIS_LIB:-${AIS_BASE}/lib}
AIS_EXEC=${AIS_EXEC:-${AIS_BASE}/exec}
AIS_OSLIB=${AIS_OSLIB:-${AIS_LIB}}
AIS_AFSDIST=${AIS_AFSDIST:-${AIS_OSLIB}/afsdist/root.client}
AIS_SRVD=${AIS_SRVD:-/srvd}
AIS_OS=${AIS_OS:-/os}
AIS_LOCALBITS=${AIS_LOCALBITS:-"/ram"}
AIS_ROOT=${AIS_ROOT:-/root}
AIS_FUTUREROOT=${AIS_FUTUREROOT:-/root}
AIS_MODE=${AIS_MODE:-root}
AIS_HDRSIZE=${AIS_HDRSIZE:-2}
AIS_SWAPSIZE=${AIS_SWAPSIZE:-150}
AIS_CACHESIZE=${AIS_CACHESIZE:-100}
AIS_HOST=${AIS_HOST:-nobody}
AIS_ADDR=${AIS_ADDR:-0.0.0.0}
AIS_DOMAIN=${AIS_DOMAIN:-MIT.EDU}
AIS_REPARTITION=${AIS_REPARTITION:-1}
AIS_BOOTHOST=${AIS_BOOTHOST:-tae-kwon-leap}
AIS_BOOTROOTDIR=${AIS_BOOTROOTDIR:-/var/boot}
AIS_BOOTSUBDIR=${AIS_BOOTSUBDIR:-sgi/${AIS_OPSSYS}}
AIS_NFSHOST=${AIS_NFSHOST:-${AIS_BOOTHOST}}
AIS_NFSROOTDIR=${AIS_NFSROOTDIR:-/inst}
AIS_NFSSUBDIR=${AIS_NFSSUBDIR:-${AIS_SYS}}
AIS_LOGFILE=${AIS_LOGFILE:-/var/athena/install.log}

export AIS_BOOTROOTDIR AIS_BOOTSUBDIR AIS_VERSION
export AIS_NFSROOTDIR AIS_NFSSUBDIR AIS_OPSSYS
export AIS_ROOTFSTYPE AIS_BOOTHOST AIS_NFSHOST AIS_CPU AIS_GRAPHICS
export AIS_CPUBOARD AIS_OSLIB AIS_SRVD AIS_OS AIS_OSVERSION AIS_REPARTITION
export AIS_SYS AIS_AFSDIST AIS_AUTO AIS_BUS AIS_BASE AIS_LIB AIS_EXEC
export AIS_UTIL AIS_DEV AIS_DIST AIS_LOCALBITS AIS_ROOT AIS_FUTUREROOT AIS_MODE
export AIS_HDRSIZE AIS_SWAPSIZE AIS_CACHESIZE AIS_HOST AIS_ADDR AIS_DOMAIN
export AIS_MODLOADAFS AIS_ATHENAVERS AIS_SYSTEM AIS_MACHINE AIS_LOGFILE

disk=/dev/dsk/dks${AIS_BUS}d${AIS_DEV}
rdisk=/dev/rdsk/dks${AIS_BUS}d${AIS_DEV}
basedev="scsi(${AIS_BUS})disk(${AIS_DEV})rdisk(0)"
disk_vh=${rdisk}vh

if [ ${AIS_CPUBOARD} = "IP32" ]; then
    basedev="pci(0)${basedev}"
fi

imagename()
{
    board=$1
    cpu=$2
    graphics=$3

    case ${board} in
	IP22)
	    bootimage="athena-sgi62-"
	    ;;
	IP32)
	    bootimage="athena-sgi63-"
	    ;;
	*)
	    echo "Unrecognized board type: ${board}"
	    ;;
    esac
    AIS_BOARD="CPUBOARD=${board}"

    case ${cpu} in
	R4400)
	    hdwr="44"
	    AIS_ARCH="CPUARCH=R4000"
	    ;;
	R4600)
	    hdwr="46"
	    AIS_ARCH="CPUARCH=R4000"
	    ;;
	R5000)
	    hdwr="50"
	    AIS_ARCH="CPUARCH=R5000"
	    ;;
	*)
	    echo "Unrecognized CPU type: ${cpu}"
	    exit 1
	    ;;
    esac

    case ${graphics} in
	GR3-XZ)
	    hdwr="${hdwr}xz"
	    AIS_GFXB="GFXBOARD=EXPRESS"
	    AIS_SUBG="SUBGR=EXPRESS"
	    ;;
	Indy)
	    hdwr="${hdwr}xl"
	    if [ ${cpu} = "R5000" ]; then
		AIS_GFXB="GFXBOARD=NEWPORT"
		AIS_SUBG="SUBGR=NEWTON"
	    else
		AIS_GFXB="GFXBOARD=NEWPORT"
		AIS_SUBG="SUBGR=NG1"
	    fi
	    ;;
	CRM)
	    hdwr="${hdwr}cr"
	    AIS_GFXB="GFXBOARD=CRIME"
	    AIS_SUBG="SUBGR=CRM"
	    ;;
	*)
	    echo "Unrecognized graphics subsystem: ${graphics}"
	    exit 1
	    ;;
    esac

    bootimage="${bootimage}${hdwr}"
    export AIS_BOARD AIS_ARCH AIS_GFXB AIS_SUBG
}
localize()
{
    mv $1 $1.symlink
    if [ $? -eq 0 ]; then
	cp -p $1.symlink $1
	if [ $? -eq 0 ]; then
	    rm -f $1.symlink
	else
	    echo "localize: copying file for $1 failed"
	    mv $1.symlink $1
	fi
    else
	echo "localize: renaming $1 failed"
    fi
}

# Athena "customizations" to OS. Need to be done whenever inst updates
# the OS. This is stuff that can't be done by track. This code is needed
# both by the installation software and the update software.

# SGI's getty runs scheme instead of /usr/bin/login, if it exists.
# We don't want this, so we move it out of the way.
if [ -f ${AIS_ROOT}/usr/lib/iaf/scheme ]; then
    mv ${AIS_ROOT}/usr/lib/iaf/scheme ${AIS_ROOT}/usr/lib/iaf/scheme.old
fi

# Midi startup doesn't have an /etc/config option. Sigh.
# Note that for rc?.d scripts, we use test -l instead of -f. This
# is because sometimes there are absolute symlinks involved, while
# absolute paths during an install really live under ${AIS_ROOT},
# so that test -f may fail even if there is a link there.
if [ -l ${AIS_ROOT}/etc/rc2.d/S98midi ]; then
    mv ${AIS_ROOT}/etc/rc2.d/S98midi ${AIS_ROOT}/etc/rc2.d/s98midi
fi

if [ -l ${AIS_ROOT}/etc/rc0.d/K02midi ]; then
    mv ${AIS_ROOT}/etc/rc0.d/K02midi ${AIS_ROOT}/etc/rc0.d/k02midi
fi

# ns_admin runs a config script (and therefore makes noise) whether
# its /etc/config file shuts it off or not. SIGH.
if [ -l ${AIS_ROOT}/etc/rc2.d/S60ns_admin ]; then
    mv ${AIS_ROOT}/etc/rc2.d/S60ns_admin ${AIS_ROOT}/etc/rc2.d/s60ns_admin
fi

if [ -l ${AIS_ROOT}/etc/rc0.d/K30ns_admin ]; then
    mv ${AIS_ROOT}/etc/rc0.d/K30ns_admin ${AIS_ROOT}/etc/rc0.d/k30ns_admin
fi

# So, setsym and all of the objects in IP*boot need to be installed
# locally for the proper functioning of autoconfig. Or, more
# specifically, to enable autoconfig to function well enough to tweak
# all the devices. Or, more specifically, to enable autoconfig to
# function well enough to tweak the camera device. Because the camera
# doesn't work unless you've run autoconfig since you last booted. So
# the only reason I'm doing this hack at the moment is so that the
# camera will work. (Actually, setsym is not needed under 6.2, but
# what the heck.)
localize ${AIS_ROOT}/usr/sbin/setsym

sysgendir=${AIS_ROOT}/usr/cpu/sysgen/${AIS_CPUBOARD}boot
for i in `find $sysgendir -follow -fstype afs -print`; do
    localize $i
done

case ${AIS_OSVERSION} in
    6.2)
	# bsdlpr startup doesn't have an /etc/config option in 6.2
	if [ -l ${AIS_ROOT}/etc/rc2.d/S61bsdlpr ]; then
	    mv ${AIS_ROOT}/etc/rc2.d/S61bsdlpr ${AIS_ROOT}/etc/rc2.d/s61bsdlpr
	fi
	if [ -l ${AIS_ROOT}/etc/rc0.d/K26bsdlpr ]; then
	    mv ${AIS_ROOT}/etc/rc0.d/K26bsdlpr ${AIS_ROOT}/etc/rc0.d/k26bsdlpr
	fi
	;;

    6.3)
	# This particular file is the only nonlocal one in sysgen/system. Its
	# absence causes autoconfig to complain at boot time, though doesn't
	# prevent the camera from working.
	localize ${AIS_ROOT}/var/sysgen/system/fddi.sm

	# setmon -x actually modifies a file in the filesystem, hence
	# the chroot.
	chroot ${AIS_ROOT} /usr/gfx/setmon -x 75hz
	;;
esac

exit 0