[PATCH] powerpc: Add support for building uImages
powerpc: Add support for building uImages
Add support to build a kernel image bootable by u-boot.
Most of the makefile foo is taken from arch/ppc/boot/images/Makefile
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index a13eb57..5f80e58 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -151,7 +151,7 @@
# All the instructions talk about "make bzImage".
bzImage: zImage
-BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
+BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage
.PHONY: $(BOOT_TARGETS)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 9770f58..dfc7eac 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -143,6 +143,36 @@
@cp -f $< $@
$(call if_changed,addnote)
+#-----------------------------------------------------------
+# build u-boot images
+#-----------------------------------------------------------
+quiet_cmd_mygzip = GZIP $@
+cmd_mygzip = gzip -f -9 < $< > $@.$$$$ && mv $@.$$$$ $@
+
+quiet_cmd_objbin = OBJCOPY $@
+ cmd_objbin = $(OBJCOPY) -O binary $< $@
+
+quiet_cmd_uimage = UIMAGE $@
+ cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A ppc -O linux -T kernel \
+ -C gzip -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \
+ -d $< $@
+
+MKIMAGE := $(srctree)/scripts/mkuboot.sh
+targets += uImage
+extra-y += vmlinux.bin vmlinux.gz
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+ $(call if_changed,objbin)
+
+$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,mygzip)
+
+$(obj)/uImage: $(obj)/vmlinux.gz
+ $(Q)rm -f $@
+ $(call if_changed,uimage)
+ @echo -n ' Image: $@ '
+ @if [ -f $@ ]; then echo 'is ready' ; else echo 'not made'; fi
+
install: $(CONFIGURE) $(BOOTIMAGE)
sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"