On Mon, 11 Sep 2006, David Härdeman wrote:
> I've attached a new version of the script (which I haven't had time to
> test yet). It should work properly with builtin or modular fb drivers
> and also support the extra options which can be passed to fb modules via
> the kernel command line.
ok thanks!
> --
> David Härdeman
> #!/bin/sh
>
> PREREQ=""
> prereqs()
> {
> echo "$PREREQ"
> }
> case $1 in
> # get pre-requisites
> prereqs)
> prereqs
> exit 0
> ;;
> esac
>
> parse_kernel_opts()
i'll make that
parse_video_opts()
as it's specific to that, rootnfs opts are very different for example.
> {
> local OPTS="$1"
> local IFS=","
>
> # Must be a line like video=<fbdriver>:<opt1>,[opt2]...
> if [ "$OPTS" = "${OPTS%%:*}" ]; then
> return
> fi
> OPTS="${OPTS#*:}"
>
> # 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>
>
> for opt in $OPTS; do
> if [ "$opt" != "${opt#*=}" ]; then
> # Already in the "<arg>=<value>" form
> echo -n "$opt "
> elif [ "$opt" != "${opt#[[:digit:]]*x[[:digit:]]}"; then
> # Sadly no regexps are available
> # but presumably a modevalue without the "mode=" prefix
> echo -n "mode=$opt "
you can use printf as regex replacement,
it's both in dash as in ash, see load_modules()
from scripts/functions
> else
> # Presumably a boolean
> echo -n "$opt=1 "
> fi
> done
> }
>
> FB=""
> OPTS=""
>
> for x in $(cat /proc/cmdline); do
> case $x in
> splash*)
> # Let the other options take precedent
> if [ -z "$FB" ]; then
> FB="vga16fb"
> OPTS=""
> fi
> ;;
> vga=*)
> FB="vesafb"
> OPTS=""
> ;;
> video=*)
> TMP=${x#*=}
> FB="${TMP%%:*}"
> OPTS="$(parse_kernel_opts "$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 $fbno
> done < /proc/fb
>
> for i in 0 1 2 3 4 5 6 7 8; do
> mknod /dev/tty$i c 4 $i
> done
> fi
i'll test it out for the 0.80 release, seems very valuable indeed.
--
maks
