PPC32: Makefile cleanups, patch from Sam Ravnborg

arch/ppc/Makefile

@@ -11,10 +11,10 @@
 #
 
 # This must match PAGE_OFFSET in include/asm-ppc/page.h.
-KERNELLOAD	=$(CONFIG_KERNEL_START)
+KERNELLOAD	:= $(CONFIG_KERNEL_START)
 
 LDFLAGS_BLOB	:= --format binary --oformat elf32-powerpc
-LDFLAGS_vmlinux	= -Ttext $(KERNELLOAD) -Bstatic
+LDFLAGS_vmlinux	:= -Ttext $(KERNELLOAD) -Bstatic
 CPPFLAGS	+= -Iarch/$(ARCH)
 AFLAGS		+= -Iarch/$(ARCH)
 cflags-y	+= -Iarch/$(ARCH) -msoft-float -pipe \

arch/ppc/boot/Makefile

@@ -17,24 +17,13 @@ BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd
 
 bootdir-y			:= simple
 bootdir-$(CONFIG_ALL_PPC)	:= openfirmware prep
-subdir-y			:= lib common images
-subdir-$(CONFIG_ALL_PPC)	+= of1275
+subdir-y			:= lib/ common/ images/
+subdir-$(CONFIG_ALL_PPC)	+= of1275/
 
 # for cleaning
 subdir-				+= simple/ openfirmware/ prep/
 
-tools-$(CONFIG_ALL_PPC)		:= addnote mknote hack-coff mkprep
-tools-$(CONFIG_PPLUS)		:= mkbugboot mkprep
-tools-$(CONFIG_4xx)		:= mktree
-tools-$(CONFIG_LOPEC)		:= mkbugboot mkprep
-tools-$(CONFIG_MCPN765)		:= mkbugboot mkprep
-tools-$(CONFIG_MENF1)		:= mkprep
-tools-$(CONFIG_MVME5100)	:= mkbugboot mkprep
-tools-$(CONFIG_PRPMC750)	:= mkbugboot mkprep
-tools-$(CONFIG_PRPMC800)	:= mkbugboot mkprep
-tools-$(CONFIG_SPRUCE)		:= mktree
-
-host-progs			:= $(addprefix utils/,$(tools-y))
+host-progs := $(addprefix utils/, addnote mknote hack-coff mkprep mkbugboot mktree)
 
 .PHONY: $(BOOT_TARGETS) $(bootdir-y)
 

arch/ppc/boot/images/Makefile

@@ -2,12 +2,14 @@
 # This dir holds all of the images for PPC machines.
 # Tom Rini	January 2001
 
-extra-y		:= vmlinux.gz
-GZIP_FLAGS	:= -v9f
+extra-y		:= vmlinux.bin vmlinux.gz
 
-$(obj)/vmlinux.gz: vmlinux
-	$(OBJCOPY) -O binary $< $(@:.gz=)
-	gzip $(GZIP_FLAGS) $(@:.gz=)
+OBJCOPYFLAGS_vmlinux.bin := -O binary
+$(obj)/vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
+
+$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,gzip)
 
 # Files generated that shall be removed upon make clean
 clean-files	:= sImage vmapus vmlinux* miboot* zImage*

arch/ppc/boot/prep/Makefile

@@ -13,17 +13,11 @@
 # modified by Cort (cort@cs.nmt.edu)
 #
 
-boot: zImage
-
-TFTPIMAGE			= /tftpboot/zImage.prep
+TFTPIMAGE		:= /tftpboot/zImage.prep
 ifeq ($(CONFIG_SMP),y)
-TFTPIMAGE			= $(TFTPBOOT).smp
+TFTPIMAGE		:= $(TFTPBOOT).smp
 endif
 
-LD_ARGS				= -T $(boot)/ld.script -Ttext 0x00800000 -Bstatic
-OBJCOPY_ARGS			= -O elf32-powerpc
-LIBS 				= $(common)/lib.a $(bootlib)/lib.a
-
 boot-y				:= head.o misc.o
 boot-$(CONFIG_VGA_CONSOLE)	+= vreset.o kbd.o
 
@@ -31,56 +25,70 @@ boot := arch/ppc/boot
 common	:= $(boot)/common
 utils	:= $(boot)/utils
 bootlib	:= $(boot)/lib
-of1275 := $(boot)/of1275
 images	:= $(boot)/images
 simple	:= $(boot)/simple
 
-EXTRA_TARGETS	:= $(boot-y) ../simple/legacy.o
-OBJS		:= $(addprefix $(obj)/,$(boot-y)) $(simple)/legacy.o 
+OBJCOPYFLAGS	:= -O elf32-powerpc
+LIBS 		:= $(common)/lib.a $(bootlib)/lib.a
 
-# Tools
-MKPREP				:= $(utils)/mkprep
+targets		:= $(boot-y) dummy.o ../simple/legacy.o
+OBJS		:= $(addprefix $(obj)/,$(boot-y)) $(simple)/legacy.o 
 
 # Extra include search dirs
 CFLAGS_kbd.o			+= -Idrivers/char
 
+zImage: initrd := 
 zImage: $(images)/zImage.prep
+	@echo '  kernel: $@ is ready ($<)'
+
+zImage.initrd: initrd := .initrd
 zImage.initrd: $(images)/zImage.initrd.prep
+	@echo '  kernel: $@ is ready ($<)'
 
-$(obj)/dummy.o: $(common)/dummy.c
-	$(CC) -c -o $@ $(common)/dummy.c
+mages)/ramdisk.image.gz:
+	@echo '  MISSING $@'
+	@echo '          RAM disk image must be provided separatly'
+	@/bin/false
 
-$(images)/zImage.prep: $(OBJS) $(LIBS) $(boot)/ld.script $(images)/vmlinux.gz \
-		$(obj)/dummy.o $(MKPREP)
-	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
+OBJCOPYFLAGS_image.o   := \
 	--add-section=.image=$(images)/vmlinux.gz \
-		--set-section-flags=.image=contents,alloc,load,readonly,data \
-		$(obj)/dummy.o $(obj)/image.o
-	$(LD) $(LD_ARGS) -o $(obj)/zImage $(OBJS) $(obj)/image.o $(LIBS)
-	$(OBJCOPY) $(OBJCOPY_ARGS) $(obj)/zImage $(obj)/zImage \
-		-R .comment -R .stab -R .stabstr
-	$(MKPREP) -pbp $(obj)/zImage $@
-	rm -f $(obj)/zImage
-
-$(images)/zImage.initrd.prep: $(OBJS) $(LIBS) $(boot)/ld.script \
-		$(images)/vmlinux.gz $(obj)/dummy.o $(MKPREP)
-	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
+	--set-section-flags=.image=contents,alloc,load,readonly,data
+targets	+= image.o
+$(obj)/image.o: $(obj)/dummy.o $(images)/vmlinux.gz
+	$(call if_changed,objcopy)
+
+OBJCOPYFLAGS_image.initrd.o    := \
 	--add-section=.ramdisk=$(images)/ramdisk.image.gz \
 	--set-section-flags=.ramdisk=contents,alloc,load,readonly,data \
 	--add-section=.image=$(images)/vmlinux.gz \
-		--set-section-flags=.image=contents,alloc,load,readonly,data \
-		$(obj)/dummy.o $(obj)/image.o
-	$(LD) $(LD_ARGS) -o $(obj)/zImage.initrd $(OBJS) $(obj)/image.o $(LIBS)
-	$(OBJCOPY) $(OBJCOPY_ARGS) $(obj)/zImage.initrd $(obj)/zImage.initrd \
-		-R .comment -R .stab -R .stabstr
-	$(MKPREP) -pbp $(obj)/zImage.initrd $@
-	rm -f  $(obj)/zImage.initrd
+	--set-section-flags=.image=contents,alloc,load,readonly,data
+targets	+= image.initrd.o
+$(obj)/image.initrd.o: $(obj)/dummy.o $(images)/vmlinux.gz $(images)/ramdisk.image.gz
+	$(call if_changed,objcopy)
+
+LDFLAGS_zImage.bin		:= -Ttext 0x00800000 -Bstatic -T
+LDFLAGS_zImage.initrd.bin	:= -Ttext 0x00800000 -Bstatic -T
+targets				+= zImage.bin zImage.initrd.bin
+$(obj)/zImage$(initrd).bin: $(boot)/ld.script $(OBJS) $(obj)/image.o $(LIBS)
+	$(call if_changed,ld)
 
+OBJCOPYFLAGS_zImage		:= -R .comment -R .stab -R .stabstr
+OBJCOPYFLAGS_zImage.initrd	:= -R .comment -R .stab -R .stabstr
+targets				+= zImage zImage.initrd
+$(obj)/zImage$(initrd): %: %.bin FORCE
+	$(call if_changed,objcopy)
+
+quiet_cmd_mkprep = MKPREP  $@
+      cmd_mkprep = $(utils)/mkprep -pbp $< $@
+
+$(images)/zImage$(initrd).prep: $(obj)/zImage$(initrd) $(utils)/mkprep FORCE
+	$(call cmd,mkprep)
+
+#
+# Convinient shorthands for various targets
+#
 floppy: zImage
 	dd if=$(images)/zImage.prep of=/dev/fd0H1440 bs=64b
 
-znetboot : zImage
-	cp $(images)/zImage.prep $(TFTPIMAGE)
-
-znetboot.initrd : zImage.initrd
-	cp $(images)/zImage.initrd.prep $(TFTPIMAGE)
+znetboot.initrd : zImage$(initrd)
+	cp $(images)/zImage$(initrd).prep $(TFTPIMAGE)

arch/ppc/boot/prep/dummy.c

+int main(void)
+{
+	return 0;
+}

arch/ppc/boot/utils/Makefile

-#
-# arch/ppc/boot/utils/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-
-HOSTCFLAGS += -I$(TOPDIR)/arch/$(ARCH)/boot/include
-
-all: FORCE
-
-# Simple programs with 1 file and no extra CFLAGS
-UTILS = addnote hack-coff mkprep mknote mkbugboot mktree \
-	addSystemMap addRamdDisk
-
-$(UTILS):
-	$(HOSTCC) $(HOSTCFLAGS) -o $@ $@.c
-
-clean:
-	rm -f $(UTILS)

arch/ppc/kernel/Makefile

@@ -10,12 +10,10 @@ EXTRA_AFLAGS		:= -Wa,-m405
 endif
 
 # Start off with 'head.o', change as needed.
-HEAD-y				:= head.o
-HEAD-$(CONFIG_40x)		:= head_4xx.o
-HEAD-$(CONFIG_8xx)		:= head_8xx.o
-HEAD-$(CONFIG_6xx)		+= idle_6xx.o
-
-extra-y	:= $(HEAD-y)
+extra-y				:= head.o
+extra-$(CONFIG_40x)		:= head_4xx.o
+extra-$(CONFIG_8xx)		:= head_8xx.o
+extra-$(CONFIG_6xx)		+= idle_6xx.o
 
 obj-y				:= entry.o traps.o irq.o idle.o time.o misc.o \
 					process.o signal.o ptrace.o align.o \

arch/ppc/ocp/Makefile

 #
 # Makefile for the linux kernel.
 #
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definitions are now in the main makefile...
-#
-# NB: cribbed from the drivers/sbus/Makefile -- PMM
 
-obj-y   	+= ocp.o ocp-driver.o ocp-probe.o
+obj-y   	:= ocp.o ocp-driver.o ocp-probe.o