[POWERPC] bootwrapper: Build multiple cuImages

Currently, the kernel uses CONFIG_DEVICE_TREE to wrap a kernel image
with a fdt blob which means for any given configuration only one dts
file can be selected and so support for only one board can be built

This moves the selection of the default .dts file out of the kernel
config and into the bootwrapper makefile.  The makefile chooses which
images to build based on the kernel config and the dts source file
name is taken directly from the image name.  For example "cuImage.ebony"
will use "ebony.dts" as the device tree source file.

In addition, this patch allows a specific image to be requested from the
command line by adding "cuImage.%" and "treeImage.%" targets to the list
of valid built targets in arch/powerpc/Makefile.  This allows the default
dts selection to be overridden.

Another advantage to this change is it allows a single defconfig to be
supplied for all boards using the same chip family and only differing in
the device tree.

Important note: This patch adds two new zImage targets; zImage.dtb.% and
zImage.dtb.initrd.% for zImages with embedded dtb files.  Currently
there are 5 platforms which require this: ps3, ep405, mpc885ads, ep88xc,
adder875-redboot and ep8248e.  This patch *changes the zImage filenames*
for those platforms.  ie. 'zImage.ps3' is now 'zImage.dtb.ps3'.

This new zImage.dtb targets were added so that the .dts file could be
part of the dependancies list for building them.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 77 insertions, 49 deletions

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 122a270..49797a4 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -60,8 +60,9 @@ src-wlib := string.S crt0.S stdio.c main.c \
 src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c \
 		cuboot-ebony.c treeboot-ebony.c prpmc2800.c \
 		ps3-head.S ps3-hvcall.S ps3.c treeboot-bamboo.c cuboot-8xx.c \
-		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c cuboot-bamboo.c \
-		fixed-head.S ep88xc.c cuboot-hpc2.c ep405.c cuboot-taishan.c \
+		cuboot-pq2.c cuboot-sequoia.c treeboot-walnut.c \
+		cuboot-bamboo.c cuboot-mpc7448hpc2.c cuboot-taishan.c \
+		fixed-head.S ep88xc.c ep405.c \
 		cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
 		cuboot-warp.c cuboot-85xx-cpm2.c
 src-boot := $(src-wlib) $(src-plat) empty.c
@@ -123,6 +124,8 @@ targets		+= $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
 extra-y		:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
 		   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
 
+dtstree		:= $(srctree)/$(src)/dts
+
 wrapper		:=$(srctree)/$(src)/wrapper
 wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree dtc) \
 			$(wrapper) FORCE
@@ -181,7 +184,7 @@ quiet_cmd_wrap	= WRAP    $@
 image-$(CONFIG_PPC_PSERIES)		+= zImage.pseries
 image-$(CONFIG_PPC_MAPLE)		+= zImage.pseries
 image-$(CONFIG_PPC_IBM_CELL_BLADE)	+= zImage.pseries
-image-$(CONFIG_PPC_PS3)			+= zImage.ps3
+image-$(CONFIG_PPC_PS3)			+= zImage-dtb.ps3
 image-$(CONFIG_PPC_CELLEB)		+= zImage.pseries
 image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
 image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
@@ -191,33 +194,69 @@ image-$(CONFIG_PPC_PRPMC2800)		+= zImage.prpmc2800
 image-$(CONFIG_PPC_ISERIES)		+= zImage.iseries
 image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage
 
-ifneq ($(CONFIG_DEVICE_TREE),"")
-image-$(CONFIG_PPC_8xx)			+= cuImage.8xx
-image-$(CONFIG_PPC_EP88XC)		+= zImage.ep88xc
-image-$(CONFIG_EP405)			+= zImage.ep405
-image-$(CONFIG_8260)			+= cuImage.pq2
-image-$(CONFIG_EP8248E)			+= zImage.ep8248e
-image-$(CONFIG_PPC_MPC52xx)		+= cuImage.52xx
-image-$(CONFIG_STORCENTER)		+= cuImage.824x
-image-$(CONFIG_PPC_83xx)		+= cuImage.83xx
-image-$(CONFIG_PPC_85xx)		+= cuImage.85xx
-ifeq ($(CONFIG_CPM2),y)
-image-$(CONFIG_PPC_85xx)		+= cuImage.85xx-cpm2
-endif
-image-$(CONFIG_MPC7448HPC2)		+= cuImage.hpc2
+#
+# Targets which embed a device tree blob
+#
+# Theses are default targets to build images which embed device tree blobs.
+# They are only required on boards which do not have FDT support in firmware.
+# Boards with newish u-boot firmare can use the uImage target above
+#
+
+# Board ports in arch/powerpc/platform/40x/Kconfig
+image-$(CONFIG_EP405)			+= zImage-dtb.ep405
+image-$(CONFIG_WALNUT)			+= treeImage.walnut
+
+# Board ports in arch/powerpc/platform/44x/Kconfig
 image-$(CONFIG_EBONY)			+= treeImage.ebony cuImage.ebony
 image-$(CONFIG_BAMBOO)			+= treeImage.bamboo cuImage.bamboo
 image-$(CONFIG_SEQUOIA)			+= cuImage.sequoia
 image-$(CONFIG_RAINIER)			+= cuImage.rainier
-image-$(CONFIG_WALNUT)			+= treeImage.walnut
 image-$(CONFIG_TAISHAN)			+= cuImage.taishan
 image-$(CONFIG_KATMAI)			+= cuImage.katmai
 image-$(CONFIG_WARP)			+= cuImage.warp
-endif
 
-ifneq ($(CONFIG_REDBOOT),"")
-image-$(CONFIG_PPC_8xx)			+= zImage.redboot-8xx
-endif
+# Board ports in arch/powerpc/platform/8xx/Kconfig
+image-$(CONFIG_PPC_MPC86XADS)		+= cuImage.mpc866ads
+image-$(CONFIG_PPC_MPC885ADS)		+= cuImage.mpc885ads
+image-$(CONFIG_PPC_EP88XC)		+= zImage-dtb.ep88xc
+image-$(CONFIG_PPC_ADDER875)		+= cuImage.adder875-uboot \
+					   zImage-dtb.adder875-redboot
+
+# Board ports in arch/powerpc/platform/52xx/Kconfig
+image-$(CONFIG_PPC_LITE5200)		+= cuImage.lite5200 cuImage.lite5200b
+
+# Board ports in arch/powerpc/platform/82xx/Kconfig
+image-$(CONFIG_MPC8272_ADS)		+= cuImage.mpc8272ads
+image-$(CONFIG_PQ2FADS)			+= cuImage.pq2fads
+image-$(CONFIG_EP8248E)			+= zImage-dtb.ep8248e
+
+# Board ports in arch/powerpc/platform/83xx/Kconfig
+image-$(CONFIG_MPC832x_MDS)		+= cuImage.mpc832x_mds
+image-$(CONFIG_MPC832x_RDB)		+= cuImage.mpc832x_rdb
+image-$(CONFIG_MPC834x_ITX)		+= cuImage.mpc8349emitx \
+					   cuImage.mpc8349emitxgp
+image-$(CONFIG_MPC834x_MDS)		+= cuImage.mpc834x_mds
+image-$(CONFIG_MPC836x_MDS)		+= cuImage.mpc836x_mds
+
+# Board ports in arch/powerpc/platform/85xx/Kconfig
+image-$(CONFIG_MPC8540_ADS)		+= cuImage.mpc8540ads
+image-$(CONFIG_MPC8560_ADS)		+= cuImage.mpc8560ads
+image-$(CONFIG_MPC85xx_CDS)		+= cuImage.mpc8541cds \
+					   cuImage.mpc8548cds \
+					   cuImage.mpc8555cds
+image-$(CONFIG_MPC85xx_MDS)		+= cuImage.mpc8568mds
+image-$(CONFIG_MPC85xx_DS)		+= cuImage.mpc8544ds \
+					   cuImage.mpc8572ds
+image-$(CONFIG_TQM8540)			+= cuImage.tqm8540
+image-$(CONFIG_TQM8541)			+= cuImage.tqm8541
+image-$(CONFIG_TQM8555)			+= cuImage.tqm8555
+image-$(CONFIG_TQM8560)			+= cuImage.tqm8560
+image-$(CONFIG_SBC8548)			+= cuImage.tqm8548
+image-$(CONFIG_SBC8560)			+= cuImage.tqm8560
+
+# Board ports in arch/powerpc/platform/embedded6xx/Kconfig
+image-$(CONFIG_STORCENTER)		+= cuImage.storcenter
+image-$(CONFIG_MPC7448HPC2)		+= cuImage.mpc7448hpc2
 
 # For 32-bit powermacs, build the COFF and miboot images
 # as well as the ELF images.
@@ -233,24 +272,20 @@ targets	+= $(image-y) $(initrd-y)
 
 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
 
-# If CONFIG_WANT_DEVICE_TREE is set and CONFIG_DEVICE_TREE isn't an
-# empty string, define 'dts' to be path to the dts
-# CONFIG_DEVICE_TREE will have "" around it, make sure to strip them
-ifeq ($(CONFIG_WANT_DEVICE_TREE),y)
-ifneq ($(CONFIG_DEVICE_TREE),"")
-dts = $(if $(shell echo $(CONFIG_DEVICE_TREE) | grep '^/'),\
-	,$(srctree)/$(src)/dts/)$(CONFIG_DEVICE_TREE:"%"=%)
-endif
-endif
-
 # Don't put the ramdisk on the pattern rule; when its missing make will try
 # the pattern rule with less dependencies that also matches (even with the
 # hard dependency listed).
-$(obj)/zImage.initrd.%: vmlinux $(wrapperbits) $(dts)
-	$(call if_changed,wrap,$*,$(dts),,$(obj)/ramdisk.image.gz)
+$(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
+	$(call if_changed,wrap,$*,,,$(obj)/ramdisk.image.gz)
 
-$(obj)/zImage.%: vmlinux $(wrapperbits) $(dts)
-	$(call if_changed,wrap,$*,$(dts))
+$(obj)/zImage.%: vmlinux $(wrapperbits)
+	$(call if_changed,wrap,$*)
+
+$(obj)/zImage-dtb.initrd.%: vmlinux $(wrapperbits) $(dtstree)/%.dts
+	$(call if_changed,wrap,$*,$(dtstree)/$*.dts,,$(obj)/ramdisk.image.gz)
+
+$(obj)/zImage-dtb.%: vmlinux $(wrapperbits) $(dtstree)/%.dts
+	$(call if_changed,wrap,$*,$(dtstree)/$*.dts)
 
 # This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
 # prefix
@@ -260,24 +295,17 @@ $(obj)/vmlinux.strip: vmlinux
 $(obj)/zImage.iseries: vmlinux
 	$(STRIP) -s -R .comment $< -o $@
 
-$(obj)/zImage.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts
-	$(STRIP) -s -R .comment $< -o vmlinux.strip
-	$(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,)
-
-$(obj)/zImage.initrd.ps3: vmlinux  $(wrapper) $(wrapperbits) $(srctree)/$(src)/dts/ps3.dts $(obj)/ramdisk.image.gz
-	$(call cmd,wrap,ps3,$(srctree)/$(src)/dts/ps3.dts,,$(obj)/ramdisk.image.gz)
-
 $(obj)/uImage: vmlinux $(wrapperbits)
 	$(call if_changed,wrap,uboot)
 
-$(obj)/cuImage.%: vmlinux $(dts) $(wrapperbits)
-	$(call if_changed,wrap,cuboot-$*,$(dts))
+$(obj)/cuImage.%: vmlinux $(dtstree)/%.dts $(wrapperbits)
+	$(call if_changed,wrap,cuboot-$*,$(dtstree)/$*.dts)
 
-$(obj)/treeImage.initrd.%: vmlinux $(dts) $(wrapperbits)
-	$(call if_changed,wrap,treeboot-$*,$(dts),,$(obj)/ramdisk.image.gz)
+$(obj)/treeImage.initrd.%: vmlinux $(dtstree)/%.dts $(wrapperbits)
+	$(call if_changed,wrap,treeboot-$*,$(dtstree)/$*.dts,,$(obj)/ramdisk.image.gz)
 
-$(obj)/treeImage.%: vmlinux $(dts) $(wrapperbits)
-	$(call if_changed,wrap,treeboot-$*,$(dts))
+$(obj)/treeImage.%: vmlinux $(dtstree)/%.dts $(wrapperbits)
+	$(call if_changed,wrap,treeboot-$*,$(dtstree)/$*.dts)
 
 # If there isn't a platform selected then just strip the vmlinux.
 ifeq (,$(image-y))