build: add new image building code infrastructure
This simplifies building device / profile specific images, and allows the build system to parallelize generating images Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43907
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146
include/image.mk
146
include/image.mk
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@ -76,6 +76,10 @@ fs-subtypes-$(CONFIG_TARGET_ROOTFS_TARGZ) += targz
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TARGET_FILESYSTEMS := $(fs-types-y)
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FS_64K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-64k
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FS_128K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-128k
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FS_256K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-256k
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define add_jffs2_mark
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echo -ne '\xde\xad\xc0\xde' >> $(1)
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endef
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@ -84,6 +88,23 @@ define toupper
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$(shell echo $(1) | tr '[:lower:]' '[:upper:]')
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endef
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define split_args
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$(foreach data, \
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$(subst |,$(space),\
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$(subst $(space),^,$(1))), \
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$(call $(2),$(strip $(subst ^,$(space),$(data)))))
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endef
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define build_cmd
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$(if $(Build/$(word 1,$(1))),,$(error Missing Build/$(word 1,$(1))))
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$(call Build/$(word 1,$(1)),$(wordlist 2,$(words $(1)),$(1)))
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endef
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define concat_cmd
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$(call split_args,$(1),build_cmd)
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endef
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# pad to 4k, 8k, 16k, 64k, 128k, 256k and add jffs2 end-of-filesystem mark
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define prepare_generic_squashfs
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$(STAGING_DIR_HOST)/bin/padjffs2 $(1) 4 8 16 64 128 256
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@ -247,6 +268,130 @@ define BuildImage/mkfs
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.PHONY: mkfs-$(1)
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mkfs-$(1): mkfs_prepare
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$(Image/mkfs/$(1))
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$(KDIR)/root.$(1): mkfs-$(1)
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endef
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# Build commands that can be called from Device/* templates
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define Build/uImage
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mkimage -A $(LINUX_KARCH) \
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-O linux -T kernel \
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-C $(1) -a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
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-n '$(call toupper,$(LINUX_KARCH)) OpenWrt Linux-$(LINUX_VERSION)' -d $@ $@.new
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@mv $@.new $@
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endef
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define Build/lzma
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$(STAGING_DIR_HOST)/bin/lzma e $@ -lc1 -lp2 -pb2 $(1) $@.new
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@mv $@.new $@
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endef
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define Build/kernel-bin
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rm -f $@
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cp $^ $@
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endef
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define Build/patch-cmdline
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$(STAGING_DIR_HOST)/bin/patch-cmdline $@ '$(CMDLINE)'
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endef
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define Build/append-kernel
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dd if=$(word 1,$^) $(if $(1),bs=$(1) conv=sync) >> $@
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endef
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define Build/append-rootfs
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dd if=$(word 2,$^) $(if $(1),bs=$(1) conv=sync) >> $@
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endef
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define Build/pad-rootfs
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$(call prepare_generic_squashfs,$@)
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endef
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define Build/check-size
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@[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -gt "$$(stat -c%s $@)" ] || { \
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echo "WARNING: Image file $@ is too big"; \
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rm -f $@; \
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}
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endef
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define Device/Init
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PROFILES := $(PROFILE)
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KERNEL:=
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KERNEL_INITRAMFS = $$(KERNEL)
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KERNEL_SIZE:=
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CMDLINE:=
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IMAGE_PREFIX := $(BIN_DIR)/$(IMG_PREFIX)-$(1)
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IMAGE_NAME = $$(IMAGE_PREFIX)-$$(1)-$$(2)
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KERNEL_PREFIX = $$(if $$(KERNEL_INSTALL),$$(IMAGE_PREFIX),$(KDIR)/$(1))
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KERNEL_INITRAMFS_PREFIX = $$(IMAGE_PREFIX)-initramfs
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KERNEL_SUFFIX := -kernel.bin
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KERNEL_IMAGE = $$(KERNEL_PREFIX)$$(KERNEL_SUFFIX)
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KERNEL_INSTALL :=
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KERNEL_SIZE :=
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FILESYSTEMS := $(TARGET_FILESYSTEMS)
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BIN_KERNEL_IMAGE = $$(patsubst $$(KERNEL_PREFIX)%,$$(IMAGE_PREFIX)%,$$(KERNEL_IMAGE))
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endef
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define Device/Check
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_TARGET = $$(if $$(filter $(PROFILE),$$(PROFILES)),install,install-disabled)
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endef
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define Device/Build/initramfs
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$$(_TARGET): $$(KERNEL_INITRAMFS_PREFIX)$$(KERNEL_SUFFIX)
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$$(KERNEL_INITRAMFS_PREFIX)$$(KERNEL_SUFFIX): $$(KERNEL_PREFIX)-initramfs$$(KERNEL_SUFFIX)
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cp $$^ $$@
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$$(KERNEL_PREFIX)-initramfs$$(KERNEL_SUFFIX): $(KDIR)/vmlinux-initramfs
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@rm -f $$@
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$$(call concat_cmd,$$(KERNEL_INITRAMFS))
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endef
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define Device/Build/check_size
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@[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -gt "$$(stat -c%s $@)" ] || { \
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echo "WARNING: Image file $@ is too big"; \
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rm -f $@; \
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}
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endef
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define Device/Build/kernel
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$$(_TARGET): $$(if $$(KERNEL_INSTALL),$$(BIN_KERNEL_IMAGE))
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$$(BIN_KERNEL_IMAGE): $$(KERNEL_IMAGE)
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cp $$^ $$@
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$$(KERNEL_IMAGE): $(KDIR)/vmlinux
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@rm -f $$@
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$$(call concat_cmd,$$(KERNEL))
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$$(if $$(KERNEL_SIZE),$$(call Device/Build/check_size,$$(KERNEL_SIZE)))
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endef
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define Device/Build/image
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$$(_TARGET): $(call IMAGE_NAME,$(1),$(2))
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$(call IMAGE_NAME,$(1),$(2)): $$(KERNEL_IMAGE) $(KDIR)/root.$(1)
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@rm -f $$@
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[ -f $$(word 1,$$^) -a -f $$(word 2,$$^) ]
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$$(call concat_cmd,$(if $(IMAGE/$(2)/$(1)),$(IMAGE/$(2)/$(1)),$(IMAGE/$(2))))
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endef
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define Device/Build
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$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),$(call Device/Build/initramfs,$(1)))
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$(call Device/Build/kernel,$(1))
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$$(eval $$(foreach image,$$(IMAGES), \
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$$(foreach fs,$$(filter $(TARGET_FILESYSTEMS),$$(FILESYSTEMS)), \
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$$(call Device/Build/image,$$(fs),$$(image)))))
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endef
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define Device
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$(call Device/Init,$(1))
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$(call Device/Default,$(1))
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$(call Device/Check,$(1))
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$(call Device/$(1),$(1))
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$(call Device/Build,$(1))
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endef
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@ -278,6 +423,7 @@ define BuildImage
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$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),$(call Image/BuildKernel/Initramfs))
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$(call Image/InstallKernel)
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$(foreach device,$(TARGET_DEVICES),$(call Device,$(device)))
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$(foreach fs,$(TARGET_FILESYSTEMS) $(fs-subtypes-y),$(call BuildImage/mkfs,$(fs)))
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install: kernel_prepare
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