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Commit a9903811 authored by Scott Wood's avatar Scott Wood Committed by Paul Mackerras
Browse files

[POWERPC] bootwrapper: Make compression of the kernel image optional. 



The --no-gzip option can be passed to the wrapper so that the kernel
image is included uncompressed into the zImage.  This is intended for
bootloaders where the zImage itself can be compressed, or where boot time
is considered more important than kernel image size.

Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
Acked-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent a07940ba

arch/powerpc/boot/wrapper

+17 −7
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ initrd= 
dtb=

dts=

cacheit=

gzip=.gz



# cross-compilation prefix

CROSS=
@@ -42,7 +43,7 @@ tmpdir=. 
usage() {

    echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2

    echo '       [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2

    echo '       [-D datadir] [-W workingdir] [vmlinux]' >&2

    echo '       [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2

    exit 1

}
@@ -91,6 +92,9 @@ while [ "$#" -gt 0 ]; do 
	[ "$#" -gt 0 ] || usage

	tmpdir="$1"

	;;

    --no-gzip)

        gzip=

        ;;

    -?)

	usage

	;;
@@ -142,14 +146,20 @@ esac 
vmz="$tmpdir/`basename \"$kernel\"`.$ext"

if [ -z "$cacheit" -o ! -f "$vmz.gz" -o "$vmz.gz" -ot "$kernel" ]; then

    ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"



    if [ -n "$gzip" ]; then

        gzip -f -9 "$vmz.$$"

    fi



    if [ -n "$cacheit" ]; then

	mv -f "$vmz.$$.gz" "$vmz.gz"

	mv -f "$vmz.$$$gzip" "$vmz$gzip"

    else

	vmz="$vmz.$$"

    fi

fi



vmz="$vmz$gzip"



case "$platform" in

uboot)

    rm -f "$ofile"
@@ -159,9 +169,9 @@ uboot) 
	version="-n Linux-$version"

    fi

    mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \

	$version -d "$vmz.gz" "$ofile"

	$version -d "$vmz" "$ofile"

    if [ -z "$cacheit" ]; then

	rm -f $vmz.gz

	rm -f "$vmz"

    fi

    exit 0

    ;;
@@ -173,9 +183,9 @@ addsec() { 
	--set-section-flags=$3=contents,alloc,load,readonly,data

}



addsec $tmp "$vmz.gz" $ksection $object/empty.o

addsec $tmp "$vmz" $ksection $object/empty.o

if [ -z "$cacheit" ]; then

    rm -f "$vmz.gz"

    rm -f "$vmz"

fi



if [ -n "$initrd" ]; then