#!/bin/sh

PREREQ=""
prereqs()
{
	echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
	prereqs
	exit 0
	;;
esac


# The options part of the kernel "video=" argument (i.e. everyting
# after "video=<fbdriver>:") has very inconsistent rules.
#
# Generally the following applies:
# 1) options are comma-separated
# 2) options can be in either of these three forms:
#    <arg>=<value>, <arg>:<value>, <boolean-arg>.
# 3) the "mode" option has the form <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m]
#    and may or may not start with "mode="
#
# When the options are used with modules, they need to be space-separated
# and the following conversions are needed:
#	<arg>:<value> -> <arg>=<value>
#	<boolean-arg> -> <boolean-arg>=1
#	<modevalue>   -> mode=<modevalue>
parse_video_opts()
{
	local OPTS="$1"
	local IFS=","

	# Must be a line like video=<fbdriver>:<opt1>,[opt2]...
	if [ "$OPTS" = "${OPTS%%:*}" ]; then
		return
	fi
	OPTS="${OPTS#*:}"
	for opt in $OPTS; do
		# Already in the "<arg>=<value>" form
		if [ "$opt" != "${opt#*=}" ]; then
			echo -n "$opt "
		# Presumably a modevalue without the "mode=" prefix
		elif [ "$opt" != "${opt#[[:digit:]]*x[[:digit:]]}"; then
			echo -n "mode=$opt "
		# Presumably a boolean
		else
			echo -n "$opt=1 "
		fi
	done
}

FB=""
OPTS=""

SPLASH=false;
VESA=false;

for x in $(cat /proc/cmdline); do
	case $x in
	splash*)
		FB="vga16fb";
		OPTS="";
		;;
	vga=*)
		FB="vesafb";
		OPTS="";
		;;
	video=*)
		FB=${x#*=}
		FB="${FB%%:*}"
		OPTS="$(parse_video_opts "$TMP")"
	esac
done

if [ -n "$FB" ]; then
	modprobe -q $FB $OPTS
fi

if [ -e /proc/fb ]; then
	while read fbno desc; do
		mknod /dev/fb$fbno 29 $fbno
	done < /proc/fb

	mknod /dev/fb0 c 29 0
	for i in 0 1 2 3 4 5 6 7 8; do
		mknod /dev/tty$i c 4 $i
	done
fi