Subject: Create an uncomrpessed uImage
From: Luotao Fu <l.fu@pengutronix.de>

This one adds a make target to create an uncomrpessed uImage format for powerpc,
which is usable by uboot. We call the target nuImage for now. We need this to
verify if we can boost up the boot speed.

Signed-off-by: Luotao Fu <l.fu@pengutrnoix.de>

---
 arch/powerpc/Makefile      |    2 +-
 arch/powerpc/boot/Makefile |    3 +++
 arch/powerpc/boot/wrapper  |   15 ++++++++++++++-
 3 files changed, 18 insertions(+), 2 deletions(-)

Index: arch/powerpc/boot/wrapper
===================================================================
--- arch/powerpc/boot/wrapper.orig
+++ arch/powerpc/boot/wrapper
@@ -133,7 +133,7 @@ coff)
     platformo=$object/of.o
     lds=$object/zImage.coff.lds
     ;;
-miboot|uboot)
+miboot|uboot|decuboot)
     # miboot and U-boot want just the bare bits, not an ELF binary
     ext=bin
     objflags="-O binary"
@@ -190,6 +190,19 @@ uboot)
     fi
     exit 0
     ;;
+decuboot)
+    rm -f "$ofile"
+    vmz_uncomp=`basename $vmz $gzip`
+    gunzip -c $vmz > $vmz_uncomp
+    mkimage -A ppc -O linux -T kernel -C none -a 00000000 -e 00000000 \
+	$uboot_version -d "$vmz_uncomp" "$ofile"
+    rm $vmz_uncomp
+    vmz="$vmz$gzip"
+    if [ -z "$cacheit" ]; then
+	rm -f "$vmz"
+    fi
+    exit 0
+    ;;
 esac
 
 addsec() {
Index: arch/powerpc/boot/Makefile
===================================================================
--- arch/powerpc/boot/Makefile.orig
+++ arch/powerpc/boot/Makefile
@@ -195,6 +195,9 @@ $(obj)/zImage.initrd.ps3: vmlinux  $(wra
 $(obj)/uImage: vmlinux $(wrapperbits)
 	$(call if_changed,wrap,uboot)
 
+$(obj)/nuImage: vmlinux $(wrapperbits)
+	$(call if_changed,wrap,decuboot)
+
 $(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
 	$(call if_changed,wrap,cuboot-$*,$(dts))
 
Index: arch/powerpc/Makefile
===================================================================
--- arch/powerpc/Makefile.orig
+++ arch/powerpc/Makefile
@@ -148,7 +148,7 @@ all: $(KBUILD_IMAGE)
 
 CPPFLAGS_vmlinux.lds	:= -Upowerpc
 
-BOOT_TARGETS = zImage zImage.initrd uImage
+BOOT_TARGETS = zImage zImage.initrd uImage nuImage
 
 PHONY += $(BOOT_TARGETS)