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
This commit is contained in:
Felix Fietkau 2015-01-10 15:26:47 +00:00
parent e66f1292aa
commit 95a945a7cb

View file

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