From a9903811bf8d130a26004f9cb27b66513a267908 Mon Sep 17 00:00:00 2001
From: Scott Wood <scottwood@freescale.com>
Date: Fri, 16 Mar 2007 12:27:59 -0500
Subject: [PATCH] [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: Scott Wood <scottwood@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/boot/wrapper | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 157d8c89e1..f9238f53c1 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -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.$$"
-    gzip -f -9 "$vmz.$$"
+
+    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
-- 
2.39.5