commit 1844c9bc0b2fed3023551c1affe033ab38e90b9a
author Martin Schwidefsky <schwidefsky@de.ibm.com> Fri Feb 26 22:37:53 2010 +0100
committer Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> Fri Feb 26 22:37:33 2010 +0100
tree b9aca066ec58a0b211a4931032b74093fdb6ff49
parent 73bfa5f2f71efcdcaad8d18cbed96b9d7ed86948

[S390] add support for compressed kernels

Add the "bzImage" compile target and the necessary code  to generate
compressed kernel images. The old style uncompressed "image" target
is preserved, a simple make will build them both.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/boot/Makefile

diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile
index 4d97eef..8800cf09 100644
--- a/arch/s390/boot/Makefile
+++ b/arch/s390/boot/Makefile
@@ -9,10 +9,18 @@
 EXTRA_CFLAGS  := -DCOMPILE_VERSION=$(COMPILE_VERSION) -gstabs -I.
 
 targets := image
+targets += bzImage
+subdir- := compressed
 
 $(obj)/image: vmlinux FORCE
 	$(call if_changed,objcopy)
 
+$(obj)/bzImage: $(obj)/compressed/vmlinux FORCE
+	$(call if_changed,objcopy)
+
+$(obj)/compressed/vmlinux: FORCE
+	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
+
 install: $(CONFIGURE) $(obj)/image
 	sh -x  $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/image \
 	      System.map Kerntypes "$(INSTALL_PATH)"