add tgz image (kernel+rootfs tar archive) for testing

SVN-Revision: 1563

openwrt/target/Config.in

@@ -3,15 +3,23 @@ menu "Target Root Filesystem"
 	config BR2_TARGET_ROOTFS_JFFS2
 		bool "jffs2"
 		default y
+		depends BR2_mipsel
 		help
 		  Build a jffs2 root filesystem
 
 	config BR2_TARGET_ROOTFS_SQUASHFS_LZMA
 		bool "squashfs-lzma"
 		default y
+		depends BR2_mipsel
 		help
 		  Build a squashfs-lzma root filesystem
 
+	config BR2_TARGET_ROOTFS_TGZ
+		bool "tgz"
+		default y
+		help
+		  Build a compressed tar archive of the kernel and the root filesystem
+
 endmenu
 
 menu "Kernel Configuration / Device Support"

openwrt/target/linux/image/tgz.mk

@@ -0,0 +1,14 @@
+$(KDIR)/vmlinux.gz: $(KDIR)/vmlinux
+	gzip -c -vf9 < $< > $@
+
+$(KDIR)/rootfs.tar.gz: $(KDIR)/vmlinux.gz
+	tar -cf $(KDIR)/rootfs.tar --owner=root --group=root -C $(KDIR)/ ./vmlinux.gz
+	tar -rf $(KDIR)/rootfs.tar --owner=root --group=root -C $(KDIR)/root/ .
+	gzip -f9 $(KDIR)/rootfs.tar
+
+tgz-install: $(KDIR)/rootfs.tar.gz
+	$(MAKE) -C $(BOARD) install KERNEL="$(KERNEL)" FS="tgz"
+
+prepare:
+compile:
+install: tgz-install