kbuild/x86_64: archhelp, $(build) usage and cleaning

Moved archhelp to arch/x86_64/Makefile
Introduced usage of $(build) and $(clean)
Use kbuild clean infrastructure

arch/x86_64/Makefile

@@ -57,32 +57,30 @@ drivers-$(CONFIG_PCI)			+= arch/x86_64/pci/
 # FIXME: is drivers- right ?
 drivers-$(CONFIG_OPROFILE)		+= arch/x86_64/oprofile/
 
-makeboot =$(Q)$(MAKE) -f scripts/Makefile.build obj=arch/x86_64/boot $(1)
+boot := arch/x86_64/boot
 
 .PHONY: zImage bzImage compressed zlilo bzlilo zdisk bzdisk install \
-		clean archclean archmrproper
+	archclean
 
 BOOTIMAGE=arch/x86_64/boot/bzImage
 zImage zlilo zdisk: BOOTIMAGE=arch/x86_64/boot/zImage
 
 zImage bzImage: vmlinux
-	$(call makeboot,$(BOOTIMAGE))
+	$(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
 
 compressed: zImage
 
 zlilo bzlilo: vmlinux
-	$(call makeboot,BOOTIMAGE=$(BOOTIMAGE) zlilo)
+	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
 
 zdisk bzdisk: vmlinux
-	$(call makeboot,BOOTIMAGE=$(BOOTIMAGE) zdisk)
+	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
 
 install: vmlinux
-	$(call makeboot,BOOTIMAGE=$(BOOTIMAGE) install)
+	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) install
 
 archclean:
-	$(call makeboot,clean)
-
-archmrproper:
+	$(Q)$(MAKE) $(clean)=$(boot)
 
 prepare: include/asm-$(ARCH)/offset.h
 
@@ -97,4 +95,12 @@ include/asm-$(ARCH)/offset.h: include/asm-$(ARCH)/offset.h.tmp
 	@$(update-if-changed)
 
 CLEAN_FILES += include/asm-$(ARCH)/offset.h.tmp \
-	       include/asm-$(ARCH)/offset.h
\ No newline at end of file
+	       include/asm-$(ARCH)/offset.h
+
+define archhelp
+  echo  '* bzImage	- Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
+  echo  '  install	- Install kernel using'
+  echo  '                  (your) ~/bin/installkernel or'
+  echo  '                  (distribution) /sbin/installkernel or'
+  echo  '        	  install to $$(INSTALL_PATH) and run lilo'
+endef

arch/x86_64/boot/Makefile

@@ -31,7 +31,7 @@ EXTRA_TARGETS	:= vmlinux.bin bootsect bootsect.o \
 CFLAGS += -m32
 
 host-progs	:= tools/build
-
+subdir-		:= compressed	#Let make clean descend in compressed/
 # ---------------------------------------------------------------------------
 
 $(obj)/zImage:  IMAGE_OFFSET := 0x1000
@@ -59,8 +59,7 @@ $(obj)/setup $(obj)/bootsect: %: %.o FORCE
 	$(call if_changed,ld)
 
 $(obj)/compressed/vmlinux: FORCE
-	$(Q)$(MAKE) -f scripts/Makefile.build obj=$(obj)/compressed \
-					IMAGE_OFFSET=$(IMAGE_OFFSET) $@
+	$(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@
 
 zdisk: $(BOOTIMAGE)
 	dd bs=8192 if=$(BOOTIMAGE) of=/dev/fd0
@@ -74,16 +73,3 @@ zlilo: $(BOOTIMAGE)
 
 install: $(BOOTIMAGE)
 	sh $(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
-
-clean:
-	@echo 'Cleaning up (boot)'
-	@rm -f $(host-progs) $(EXTRA_TARGETS)
-	+@$(call descend,$(obj)/compressed) clean
-
-archhelp:
-	@echo  '* bzImage	- Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
-	@echo  '  install	- Install kernel using'
-	@echo  '                  (your) ~/bin/installkernel or'
-	@echo  '                  (distribution) /sbin/installkernel or'
-	@echo  '        	  install to $$(INSTALL_PATH) and run lilo'
-

arch/x86_64/boot/compressed/Makefile

@@ -30,7 +30,3 @@ LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
 
 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
 	$(call if_changed,ld)
-
-clean:
-	@echo 'Cleaning up (boot/compressed)'
-	@rm -f $(EXTRA_TARGETS)