[POWERPC] Implement 'make bootwrapper_install'

This adds a 'bootwrapper_install' make target for the powerpc
architecture, which installs the wrapper script, intermediate object
files and device-tree sources for later use.

This will then allow bootable zImages to be created other than in the
context of a kernel build.
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/Makefile

@@ -167,6 +167,9 @@ boot := arch/$(ARCH)/boot
 $(BOOT_TARGETS): vmlinux
 	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
 
+bootwrapper_install:
+	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
+
 define archhelp
   @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
   @echo '  install         - Install kernel using'

arch/powerpc/boot/Makefile

@@ -243,3 +243,51 @@ clean-kernel := vmlinux.strip vmlinux.bin
 clean-kernel += $(addsuffix .gz,$(clean-kernel))
 # If not absolute clean-files are relative to $(obj).
 clean-files += $(addprefix $(objtree)/, $(clean-kernel))
+
+WRAPPER_OBJDIR := /usr/lib/kernel-wrapper
+WRAPPER_DTSDIR := /usr/lib/kernel-wrapper/dts
+WRAPPER_BINDIR := /usr/sbin
+INSTALL := install
+
+extra-installed		:= $(patsubst $(obj)/%, $(DESTDIR)$(WRAPPER_OBJDIR)/%, $(extra-y))
+hostprogs-installed	:= $(patsubst %, $(DESTDIR)$(WRAPPER_BINDIR)/%, $(hostprogs-y))
+wrapper-installed	:= $(DESTDIR)$(WRAPPER_BINDIR)/wrapper
+dts-installed		:= $(patsubst $(obj)/dts/%, $(DESTDIR)$(WRAPPER_DTSDIR)/%, $(wildcard $(obj)/dts/*.dts))
+
+all-installed		:= $(extra-installed) $(hostprogs-installed) $(wrapper-installed) $(dts-installed)
+
+quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
+      cmd_mkdir           = mkdir -p $@
+
+quiet_cmd_install	  = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_OBJDIR)/%,%,$@)
+      cmd_install	  = $(INSTALL)  -m0644 $(patsubst $(DESTDIR)$(WRAPPER_OBJDIR)/%,$(obj)/%,$@) $@
+
+quiet_cmd_install_dts	  = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_DTSDIR)/%,dts/%,$@)
+      cmd_install_dts	  = $(INSTALL)  -m0644 $(patsubst $(DESTDIR)$(WRAPPER_DTSDIR)/%,$(srctree)/$(obj)/dts/%,$@) $@
+
+quiet_cmd_install_exe	  = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,%,$@)
+      cmd_install_exe	  = $(INSTALL)  -m0755 $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,$(obj)/%,$@) $@
+
+quiet_cmd_install_wrapper = INSTALL $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,%,$@)
+      cmd_install_wrapper = $(INSTALL)  -m0755 $(patsubst $(DESTDIR)$(WRAPPER_BINDIR)/%,$(srctree)/$(obj)/%,$@) $@ ;\
+				sed -i $@ -e 's%^object=.*%object=$(WRAPPER_OBJDIR)%' \
+					  -e 's%^objbin=.*%objbin=$(WRAPPER_BINDIR)%' \
+
+
+$(DESTDIR)$(WRAPPER_OBJDIR) $(DESTDIR)$(WRAPPER_DTSDIR) $(DESTDIR)$(WRAPPER_BINDIR):
+	$(call cmd,mkdir)
+
+$(extra-installed)	: $(DESTDIR)$(WRAPPER_OBJDIR)/% : $(obj)/% | $(DESTDIR)$(WRAPPER_OBJDIR)
+	$(call cmd,install)
+
+$(hostprogs-installed)  : $(DESTDIR)$(WRAPPER_BINDIR)/% : $(obj)/% | $(DESTDIR)$(WRAPPER_BINDIR)
+	$(call cmd,install_exe)
+
+$(dts-installed)	: $(DESTDIR)$(WRAPPER_DTSDIR)/% : $(srctree)/$(obj)/dts/% | $(DESTDIR)$(WRAPPER_DTSDIR)
+	$(call cmd,install_dts)
+
+$(wrapper-installed): $(DESTDIR)$(WRAPPER_BINDIR) $(srctree)/$(obj)/wrapper | $(DESTDIR)$(WRAPPER_BINDIR)
+	$(call cmd,install_wrapper)
+
+$(obj)/bootwrapper_install: $(all-installed)
+