include/image.mk

   1 #
   2 # Copyright (C) 2006-2010 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7
   8 override TARGET_BUILD=
   9 include $(INCLUDE_DIR)/prereq.mk
  10 include $(INCLUDE_DIR)/kernel.mk
  11 include $(INCLUDE_DIR)/host.mk
  12 include $(INCLUDE_DIR)/version.mk
  13
  14 override MAKE:=$(_SINGLE)$(SUBMAKE)
  15 override NO_TRACE_MAKE:=$(_SINGLE)$(NO_TRACE_MAKE)
  16
  17 KDIR=$(KERNEL_BUILD_DIR)
  18 KDIR_TMP=$(KDIR)/tmp
  19 DTS_DIR:=$(LINUX_DIR)/arch/$(ARCH)/boot/dts/
  20
  21 IMG_PREFIX:=openwrt-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))
  22
  23 MKFS_DEVTABLE_OPT := -D $(INCLUDE_DIR)/device_table.txt
  24
  25 ifneq ($(CONFIG_BIG_ENDIAN),)
  26   JFFS2OPTS     :=  --big-endian --squash-uids -v
  27 else
  28   JFFS2OPTS     :=  --little-endian --squash-uids -v
  29 endif
  30
  31 ifeq ($(CONFIG_JFFS2_RTIME),y)
  32   JFFS2OPTS += -X rtime
  33 endif
  34 ifeq ($(CONFIG_JFFS2_ZLIB),y)
  35   JFFS2OPTS += -X zlib
  36 endif
  37 ifeq ($(CONFIG_JFFS2_LZMA),y)
  38   JFFS2OPTS += -X lzma --compression-mode=size
  39 endif
  40 ifneq ($(CONFIG_JFFS2_RTIME),y)
  41   JFFS2OPTS += -x rtime
  42 endif
  43 ifneq ($(CONFIG_JFFS2_ZLIB),y)
  44   JFFS2OPTS += -x zlib
  45 endif
  46 ifneq ($(CONFIG_JFFS2_LZMA),y)
  47   JFFS2OPTS += -x lzma
  48 endif
  49
  50 JFFS2OPTS += $(MKFS_DEVTABLE_OPT)
  51
  52 SQUASHFS_BLOCKSIZE := $(CONFIG_TARGET_SQUASHFS_BLOCK_SIZE)k
  53 SQUASHFSOPT := -b $(SQUASHFS_BLOCKSIZE)
  54 SQUASHFSOPT += -p '/dev d 755 0 0' -p '/dev/console c 600 0 0 5 1'
  55 SQUASHFSCOMP := gzip
  56 LZMA_XZ_OPTIONS := -Xpreset 9 -Xe -Xlc 0 -Xlp 2 -Xpb 2
  57 ifeq ($(CONFIG_SQUASHFS_LZMA),y)
  58   SQUASHFSCOMP := lzma $(LZMA_XZ_OPTIONS)
  59 endif
  60 ifeq ($(CONFIG_SQUASHFS_XZ),y)
  61   ifneq ($(filter arm x86 powerpc sparc,$(LINUX_KARCH)),)
  62     BCJ_FILTER:=-Xbcj $(LINUX_KARCH)
  63   endif
  64   SQUASHFSCOMP := xz $(LZMA_XZ_OPTIONS) $(BCJ_FILTER)
  65 endif
  66
  67 JFFS2_BLOCKSIZE ?= 64k 128k
  68
  69 fs-types-$(CONFIG_TARGET_ROOTFS_SQUASHFS) += squashfs
  70 fs-types-$(CONFIG_TARGET_ROOTFS_JFFS2) += $(addprefix jffs2-,$(JFFS2_BLOCKSIZE))
  71 fs-types-$(CONFIG_TARGET_ROOTFS_JFFS2_NAND) += $(addprefix jffs2-nand-,$(NAND_BLOCKSIZE))
  72 fs-types-$(CONFIG_TARGET_ROOTFS_EXT4FS) += ext4
  73 fs-types-$(CONFIG_TARGET_ROOTFS_ISO) += iso
  74 fs-subtypes-$(CONFIG_TARGET_ROOTFS_JFFS2) += $(addsuffix -raw,$(addprefix jffs2-,$(JFFS2_BLOCKSIZE)))
  75 fs-subtypes-$(CONFIG_TARGET_ROOTFS_CPIOGZ) += cpiogz
  76 fs-subtypes-$(CONFIG_TARGET_ROOTFS_TARGZ) += targz
  77
  78 TARGET_FILESYSTEMS := $(fs-types-y)
  79
  80 FS_64K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-64k
  81 FS_128K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-128k
  82 FS_256K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-256k
  83
  84 define add_jffs2_mark
  85         echo -ne '\xde\xad\xc0\xde' >> $(1)
  86 endef
  87
  88 define toupper
  89 $(shell echo $(1) | tr '[:lower:]' '[:upper:]')
  90 endef
  91
  92 define split_args
  93 $(foreach data, \
  94         $(subst |,$(space),\
  95                 $(subst $(space),^,$(1))), \
  96         $(call $(2),$(strip $(subst ^,$(space),$(data)))))
  97 endef
  98
  99 define build_cmd
 100 $(if $(Build/$(word 1,$(1))),,$(error Missing Build/$(word 1,$(1))))
 101 $(call Build/$(word 1,$(1)),$(wordlist 2,$(words $(1)),$(1)))
 102
 103 endef
 104
 105 define concat_cmd
 106 $(call split_args,$(1),build_cmd)
 107 endef
 108
 109 # pad to 4k, 8k, 16k, 64k, 128k, 256k and add jffs2 end-of-filesystem mark
 110 define prepare_generic_squashfs
 111         $(STAGING_DIR_HOST)/bin/padjffs2 $(1) 4 8 16 64 128 256
 112 endef
 113
 114 define Image/BuildKernel/Initramfs
 115         $(call Image/Build/Initramfs)
 116 endef
 117
 118 define Image/BuildKernel/MkuImage
 119         mkimage -A $(ARCH) -O linux -T kernel -C $(1) -a $(2) -e $(3) \
 120                 -n '$(call toupper,$(ARCH)) OpenWrt Linux-$(LINUX_VERSION)' -d $(4) $(5)
 121 endef
 122
 123 define Image/BuildKernel/MkFIT
 124         $(TOPDIR)/scripts/mkits.sh \
 125                 -D $(1) -o $(KDIR)/fit-$(1).its -k $(2) $(if $(3),-d $(3)) -C $(4) -a $(5) -e $(6) \
 126                 -A $(ARCH) -v $(LINUX_VERSION)
 127         PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/fit-$(1).its $(KDIR)/fit-$(1)$(7).itb
 128 endef
 129
 130 # $(1) source dts file
 131 # $(2) target dtb file
 132 # $(3) extra CPP flags
 133 # $(4) extra DTC flags
 134 define Image/BuildDTB
 135         $(CPP) -nostdinc -x assembler-with-cpp \
 136                 -I$(LINUX_DIR)/arch/$(ARCH)/boot/dts \
 137                 -I$(LINUX_DIR)/arch/$(ARCH)/boot/dts/include \
 138                 -undef -D__DTS__ $(3) \
 139                 -o $(2).tmp $(1)
 140         $(LINUX_DIR)/scripts/dtc/dtc -O dtb \
 141                 -i$(dir $(1)) $(4) \
 142                 -o $(2) $(2).tmp
 143         $(RM) $(2).tmp
 144 endef
 145
 146 define Image/mkfs/jffs2/sub
 147                 $(STAGING_DIR_HOST)/bin/mkfs.jffs2 $(3) --pad -e $(patsubst %k,%KiB,$(1)) -o $(KDIR)/root.jffs2-$(2) -d $(TARGET_DIR) -v 2>&1 1>/dev/null | awk '/^.+$$$$/'
 148                 $(call add_jffs2_mark,$(KDIR)/root.jffs2-$(2))
 149 endef
 150
 151 define Image/mkfs/jffs2/sub-raw
 152                 $(STAGING_DIR_HOST)/bin/mkfs.jffs2 $(3) -e $(patsubst %k,%KiB,$(1)) -o $(KDIR)/root.jffs2-$(2)-raw -d $(TARGET_DIR) -v 2>&1 1>/dev/null | awk '/^.+$$$$/'
 153 endef
 154
 155 define Image/mkfs/jffs2/template
 156   Image/mkfs/jffs2-$(1) = $$(call Image/mkfs/jffs2/sub,$(1),$(1),$(JFFS2OPTS))
 157   Image/mkfs/jffs2-$(1)-raw = $$(call Image/mkfs/jffs2/sub-raw,$(1),$(1),$(JFFS2OPTS))
 158
 159 endef
 160
 161 define Image/mkfs/jffs2-nand/template
 162   Image/mkfs/jffs2-nand-$(1) = \
 163         $$(call Image/mkfs/jffs2/sub, \
 164                 $(word 2,$(subst -, ,$(1))),nand-$(1), \
 165                         $(JFFS2OPTS) --no-cleanmarkers --pagesize=$(word 1,$(subst -, ,$(1))))
 166
 167 endef
 168
 169 $(eval $(foreach S,$(JFFS2_BLOCKSIZE),$(call Image/mkfs/jffs2/template,$(S))))
 170 $(eval $(foreach S,$(NAND_BLOCKSIZE),$(call Image/mkfs/jffs2-nand/template,$(S))))
 171
 172 define Image/mkfs/squashfs
 173         $(STAGING_DIR_HOST)/bin/mksquashfs4 $(TARGET_DIR) $(KDIR)/root.squashfs -nopad -noappend -root-owned -comp $(SQUASHFSCOMP) $(SQUASHFSOPT) -processors $(if $(CONFIG_PKG_BUILD_JOBS),$(CONFIG_PKG_BUILD_JOBS),1)
 174 endef
 175
 176 # $(1): board name
 177 # $(2): rootfs type
 178 # $(3): kernel image
 179 ifneq ($(CONFIG_NAND_SUPPORT),)
 180    define Image/Build/SysupgradeNAND
 181         mkdir -p "$(KDIR_TMP)/sysupgrade-$(1)/"
 182         echo "BOARD=$(1)" > "$(KDIR_TMP)/sysupgrade-$(1)/CONTROL"
 183         [ -z "$(2)" ] || $(CP) "$(KDIR)/root.$(2)" "$(KDIR_TMP)/sysupgrade-$(1)/root"
 184         [ -z "$(3)" ] || $(CP) "$(3)" "$(KDIR_TMP)/sysupgrade-$(1)/kernel"
 185         (cd "$(KDIR_TMP)"; $(TAR) cvf \
 186                 "$(BIN_DIR)/$(IMG_PREFIX)-$(1)-$(2)-sysupgrade.tar" sysupgrade-$(1))
 187    endef
 188
 189 # $(1) board name
 190 # $(2) ubinize-image options (e.g. --uboot-env and/or --kernel kernelimage)
 191 # $(3) rootfstype (e.g. squashfs or ubifs)
 192 # $(4) options to pass-through to ubinize (i.e. $($(PROFILE)_UBI_OPTS)))
 193    define Image/Build/UbinizeImage
 194         sh $(TOPDIR)/scripts/ubinize-image.sh $(2) \
 195                 "$(KDIR)/root.$(3)" \
 196                 "$(KDIR)/$(IMG_PREFIX)-$(1)-$(3)-ubinized.bin" \
 197                 $(4)
 198    endef
 199
 200 endif
 201
 202 ifneq ($(CONFIG_TARGET_ROOTFS_UBIFS),)
 203     define Image/mkfs/ubifs/generate
 204         $(CP) ./ubinize$(1).cfg $(KDIR)
 205         ( cd $(KDIR); \
 206                 $(STAGING_DIR_HOST)/bin/ubinize \
 207                 $(if $($(PROFILE)_UBI_OPTS), \
 208                         $(shell echo $($(PROFILE)_UBI_OPTS)), \
 209                         $(shell echo $(UBI_OPTS)) \
 210                 ) \
 211                 -o $(KDIR)/root$(1).ubi \
 212                 ubinize$(1).cfg \
 213         )
 214     endef
 215
 216     define Image/mkfs/ubifs
 217
 218         ifneq ($($(PROFILE)_UBIFS_OPTS)$(UBIFS_OPTS),)
 219                 $(STAGING_DIR_HOST)/bin/mkfs.ubifs \
 220                         $(if $($(PROFILE)_UBIFS_OPTS), \
 221                                 $(shell echo $($(PROFILE)_UBIFS_OPTS)), \
 222                                 $(shell echo $(UBIFS_OPTS)) \
 223                         ) \
 224                         $(if $(CONFIG_TARGET_UBIFS_FREE_SPACE_FIXUP),--space-fixup) \
 225                         $(if $(CONFIG_TARGET_UBIFS_COMPRESSION_NONE),--force-compr=none) \
 226                         $(if $(CONFIG_TARGET_UBIFS_COMPRESSION_LZO),--force-compr=lzo) \
 227                         $(if $(CONFIG_TARGET_UBIFS_COMPRESSION_ZLIB),--force-compr=zlib) \
 228                         $(if $(shell echo $(CONFIG_TARGET_UBIFS_JOURNAL_SIZE)),--jrn-size=$(CONFIG_TARGET_UBIFS_JOURNAL_SIZE)) \
 229                         --squash-uids \
 230                         -o $(KDIR)/root.ubifs \
 231                         -d $(TARGET_DIR)
 232         endif
 233         $(call Image/Build,ubifs)
 234
 235         ifneq ($($(PROFILE)_UBI_OPTS)$(UBI_OPTS),)
 236                 $(if $(wildcard ./ubinize.cfg),$(call Image/mkfs/ubifs/generate,))
 237                 $(if $(wildcard ./ubinize-overlay.cfg),$(call Image/mkfs/ubifs/generate,-overlay))
 238         endif
 239         $(if $(wildcard ./ubinize.cfg),$(call Image/Build,ubi))
 240     endef
 241 endif
 242
 243 define Image/mkfs/cpiogz
 244         ( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(BIN_DIR)/$(IMG_PREFIX)-rootfs.cpio.gz )
 245 endef
 246
 247 define Image/mkfs/targz
 248         $(TAR) -czpf $(BIN_DIR)/$(IMG_PREFIX)$(if $(PROFILE),-$(PROFILE))-rootfs.tar.gz --numeric-owner --owner=0 --group=0 -C $(TARGET_DIR)/ .
 249 endef
 250
 251 E2SIZE=$(shell echo $$(($(CONFIG_TARGET_ROOTFS_PARTSIZE)*1024*1024)))
 252
 253 define Image/mkfs/ext4
 254         $(STAGING_DIR_HOST)/bin/make_ext4fs \
 255                 -l $(E2SIZE) -b $(CONFIG_TARGET_EXT4_BLOCKSIZE) \
 256                 -i $(CONFIG_TARGET_EXT4_MAXINODE) \
 257                 -m $(CONFIG_TARGET_EXT4_RESERVED_PCT) \
 258                 $(if $(CONFIG_TARGET_EXT4_JOURNAL),,-J) \
 259                 $(KDIR)/root.ext4 $(TARGET_DIR)/
 260 endef
 261
 262 define Image/mkfs/prepare/default
 263         # Use symbolic permissions to avoid clobbering SUID/SGID/sticky bits
 264         - $(FIND) $(TARGET_DIR) -type f -not -perm /0100 -not -name 'ssh_host*' -not -name 'shadow' -print0 | $(XARGS) -0 chmod u+rw,g+r,o+r
 265         - $(FIND) $(TARGET_DIR) -type f -perm /0100 -print0 | $(XARGS) -0 chmod u+rwx,g+rx,o+rx
 266         - $(FIND) $(TARGET_DIR) -type d -print0 | $(XARGS) -0 chmod u+rwx,g+rx,o+rx
 267         $(INSTALL_DIR) $(TARGET_DIR)/tmp $(TARGET_DIR)/overlay
 268         chmod 1777 $(TARGET_DIR)/tmp
 269 endef
 270
 271 define Image/mkfs/prepare
 272         $(call Image/mkfs/prepare/default)
 273 endef
 274
 275
 276 define Image/Checksum
 277         ( cd ${BIN_DIR} ; \
 278                 $(FIND) -maxdepth 1 -type f \! -name 'md5sums'  -printf "%P\n" | sort | xargs $1 > $2 \
 279         )
 280 endef
 281
 282 define BuildImage/mkfs
 283   install: mkfs-$(1)
 284   .PHONY: mkfs-$(1)
 285   mkfs-$(1): mkfs_prepare
 286         $(Image/mkfs/$(1))
 287         $(call Build/mkfs/default,$(1))
 288         $(call Build/mkfs/$(1),$(1))
 289   $(KDIR)/root.$(1): mkfs-$(1)
 290
 291 endef
 292
 293 # Build commands that can be called from Device/* templates
 294 define Build/uImage
 295         mkimage -A $(LINUX_KARCH) \
 296                 -O linux -T kernel \
 297                 -C $(1) -a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
 298                 -n '$(call toupper,$(LINUX_KARCH)) OpenWrt Linux-$(LINUX_VERSION)' -d $@ $@.new
 299         @mv $@.new $@
 300 endef
 301
 302 define Build/netgear-chk
 303         $(STAGING_DIR_HOST)/bin/mkchkimg \
 304                 -o $@.new \
 305                 -k $@ \
 306                 -b $(NETGEAR_BOARD_ID) \
 307                 -r $(NETGEAR_REGION)
 308         mv $@.new $@
 309 endef
 310
 311 define Build/fit
 312         $(TOPDIR)/scripts/mkits.sh \
 313                 -D $(DEVICE_NAME) -o $@.its -k $@ \
 314                 $(if $(word 2,$(1)),-d $(word 2,$(1))) -C $(word 1,$(1)) \
 315                 -a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
 316                 -A $(ARCH) -v $(LINUX_VERSION)
 317         PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $@.its $@.new
 318         @mv $@.new $@
 319 endef
 320
 321 define Build/lzma
 322         $(STAGING_DIR_HOST)/bin/lzma e $@ -lc1 -lp2 -pb2 $(1) $@.new
 323         @mv $@.new $@
 324 endef
 325
 326 define Build/kernel-bin
 327         rm -f $@
 328         cp $^ $@
 329 endef
 330
 331 define Build/patch-cmdline
 332         $(STAGING_DIR_HOST)/bin/patch-cmdline $@ '$(CMDLINE)'
 333 endef
 334
 335 define Build/append-kernel
 336         dd if=$(word 1,$^) $(if $(1),bs=$(1) conv=sync) >> $@
 337 endef
 338
 339 define Build/append-rootfs
 340         dd if=$(word 2,$^) $(if $(1),bs=$(1) conv=sync) >> $@
 341 endef
 342
 343 define Build/pad-to
 344         dd if=$@ of=$@.new bs=$(1) conv=sync
 345         mv $@.new $@
 346 endef
 347
 348 define Build/pad-rootfs
 349         $(call prepare_generic_squashfs,$@ $(1))
 350 endef
 351
 352 define Build/pad-offset
 353         let \
 354                 size="$$(stat -c%s $@)" \
 355                 pad="$(word 1, $(1))" \
 356                 offset="$(word 2, $(1))" \
 357                 pad="(pad - ((size + offset) % pad)) % pad" \
 358                 newsize='size + pad'; \
 359                 dd if=$@ of=$@.new bs=$$newsize count=1 conv=sync
 360         mv $@.new $@
 361 endef
 362
 363 define Build/check-size
 364         @[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -gt "$$(stat -c%s $@)" ] || { \
 365                 echo "WARNING: Image file $@ is too big" >&2; \
 366                 rm -f $@; \
 367         }
 368 endef
 369
 370 define Build/combined-image
 371         -sh $(TOPDIR)/scripts/combined-image.sh \
 372                 "$(word 1,$^)" \
 373                 "$@" \
 374                 "$@.new"
 375         @mv $@.new $@
 376 endef
 377
 378 define Device/Init
 379   PROFILES := $(PROFILE)
 380   DEVICE_NAME := $(1)
 381   KERNEL:=
 382   KERNEL_INITRAMFS = $$(KERNEL)
 383   KERNEL_SIZE:=
 384   CMDLINE:=
 385
 386   IMAGE_PREFIX := $(IMG_PREFIX)-$(1)
 387   IMAGE_NAME = $$(IMAGE_PREFIX)-$$(1)-$$(2)
 388   KERNEL_PREFIX = $(1)
 389   KERNEL_SUFFIX := -kernel.bin
 390   KERNEL_IMAGE = $$(KERNEL_PREFIX)$$(KERNEL_SUFFIX)
 391   KERNEL_INITRAMFS_PREFIX = $$(IMAGE_PREFIX)-initramfs
 392   KERNEL_INITRAMFS_IMAGE = $$(KERNEL_INITRAMFS_PREFIX)$$(KERNEL_SUFFIX)
 393   KERNEL_INSTALL :=
 394   KERNEL_NAME := vmlinux
 395   KERNEL_SIZE :=
 396
 397   FILESYSTEMS := $(TARGET_FILESYSTEMS)
 398 endef
 399
 400 define Device/ExportVar
 401   $(1) : $(2):=$$($(2))
 402
 403 endef
 404 define Device/Export
 405   $(foreach var,$(DEVICE_VARS) DEVICE_NAME KERNEL KERNEL_INITRAMFS,$(call Device/ExportVar,$(1),$(var)))
 406   $(1) : FILESYSTEM:=$(2)
 407 endef
 408
 409 define Device/Check
 410   _TARGET = $$(if $$(filter $(PROFILE),$$(PROFILES)),install,install-disabled)
 411   _COMPILE_TARGET = $$(if $(if $(IB),,$(CONFIG_IB)$$(filter $(PROFILE),$$(PROFILES))),compile,compile-disabled)
 412 endef
 413
 414 ifndef IB
 415 define Device/Build/initramfs
 416   $(call Device/Export,$(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE),$(1))
 417   $$(_TARGET): $(BIN_DIR)/$$(KERNEL_INITRAMFS_IMAGE)
 418
 419   $(KDIR)/$$(KERNEL_NAME)-initramfs: image_prepare
 420   $(BIN_DIR)/$$(KERNEL_INITRAMFS_IMAGE): $(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE)
 421         cp $$^ $$@
 422
 423   $(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE): $(KDIR)/$$(KERNEL_NAME)-initramfs
 424         @rm -f $$@
 425         $$(call concat_cmd,$$(KERNEL_INITRAMFS))
 426 endef
 427 endif
 428
 429 define Device/Build/check_size
 430         @[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -gt "$$(stat -c%s $@)" ] || { \
 431                 echo "WARNING: Image file $@ is too big" >&2; \
 432                 rm -f $@; \
 433         }
 434 endef
 435
 436 define Device/Build/compile
 437   $$(_COMPILE_TARGET): $(KDIR)/$(1)
 438   $(eval $(call Device/Export,$(KDIR)/$(1)))
 439   $(KDIR)/$(1):
 440         $$(call concat_cmd,$(COMPILE/$(1)))
 441
 442 endef
 443
 444 define Device/Build/kernel
 445   _KERNEL_IMAGES += $(KDIR)/$$(KERNEL_NAME)
 446   $(KDIR)/$$(KERNEL_NAME): image_prepare
 447   $$(_TARGET): $$(if $$(KERNEL_INSTALL),$(BIN_DIR)/$$(KERNEL_IMAGE))
 448   $(call Device/Export,$(KDIR)/$$(KERNEL_IMAGE),$(1))
 449   $(BIN_DIR)/$$(KERNEL_IMAGE): $(KDIR)/$$(KERNEL_IMAGE)
 450         cp $$^ $$@
 451   ifndef IB
 452     ifdef CONFIG_IB
 453       install: $(KDIR)/$$(KERNEL_IMAGE)
 454     endif
 455     $(KDIR)/$$(KERNEL_IMAGE): $(KDIR)/$$(KERNEL_NAME)
 456         @rm -f $$@
 457         $$(call concat_cmd,$$(KERNEL))
 458         $$(if $$(KERNEL_SIZE),$$(call Device/Build/check_size,$$(KERNEL_SIZE)))
 459   endif
 460 endef
 461
 462 define Device/Build/image
 463   $$(_TARGET): $(BIN_DIR)/$(call IMAGE_NAME,$(1),$(2))
 464   $(eval $(call Device/Export,$(KDIR)/tmp/$(call IMAGE_NAME,$(1),$(2)),$(1)))
 465   $(KDIR)/tmp/$(call IMAGE_NAME,$(1),$(2)): $(KDIR)/$$(KERNEL_IMAGE) $(KDIR)/root.$(1)
 466         @rm -f $$@
 467         [ -f $$(word 1,$$^) -a -f $$(word 2,$$^) ]
 468         $$(call concat_cmd,$(if $(IMAGE/$(2)/$(1)),$(IMAGE/$(2)/$(1)),$(IMAGE/$(2))))
 469
 470   .IGNORE: $(BIN_DIR)/$(call IMAGE_NAME,$(1),$(2))
 471   $(BIN_DIR)/$(call IMAGE_NAME,$(1),$(2)): $(KDIR)/tmp/$(call IMAGE_NAME,$(1),$(2))
 472         cp $$^ $$@
 473
 474 endef
 475
 476 define Device/Build
 477   $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),$(call Device/Build/initramfs,$(1)))
 478   $(call Device/Build/kernel,$(1))
 479
 480   $$(eval $$(foreach compile,$$(COMPILE), \
 481     $$(call Device/Build/compile,$$(compile),$(1))))
 482
 483   $$(eval $$(foreach image,$$(IMAGES), \
 484     $$(foreach fs,$$(filter $(TARGET_FILESYSTEMS),$$(FILESYSTEMS)), \
 485       $$(call Device/Build/image,$$(fs),$$(image),$(1)))))
 486 endef
 487
 488 define Device
 489   $(call Device/Init,$(1))
 490   $(call Device/Default,$(1))
 491   $(call Device/Check,$(1))
 492   $(call Device/$(1),$(1))
 493   $(call Device/Build,$(1))
 494
 495 endef
 496
 497 define BuildImage
 498
 499   download:
 500   prepare:
 501   compile:
 502   clean:
 503   image_prepare:
 504
 505   ifeq ($(IB),)
 506     .PHONY: download prepare compile clean image_prepare mkfs_prepare kernel_prepare install
 507     compile:
 508                 $(call Build/Compile)
 509
 510     clean:
 511                 $(call Build/Clean)
 512
 513     image_prepare: compile
 514                 mkdir -p $(KDIR)/tmp
 515                 $(call Image/Prepare)
 516   else
 517     image_prepare:
 518                 mkdir -p $(KDIR)/tmp
 519   endif
 520
 521   mkfs_prepare: image_prepare
 522         $(call Image/mkfs/prepare)
 523
 524   kernel_prepare: mkfs_prepare
 525         $(call Image/BuildKernel)
 526         $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),$(if $(IB),,$(call Image/BuildKernel/Initramfs)))
 527         $(call Image/InstallKernel)
 528
 529   $(foreach device,$(TARGET_DEVICES),$(call Device,$(device)))
 530   $(foreach fs,$(TARGET_FILESYSTEMS) $(fs-subtypes-y),$(call BuildImage/mkfs,$(fs)))
 531
 532   $$(sort $$(_KERNEL_IMAGES)):
 533         @touch $$@
 534
 535   install: kernel_prepare
 536         $(foreach fs,$(TARGET_FILESYSTEMS),
 537                 $(call Image/Build,$(fs))
 538         )
 539         $(call Image/mkfs/ubifs)
 540         $(call Image/Checksum,md5sum --binary,md5sums)
 541         $(call Image/Checksum,openssl dgst -sha256,sha256sums)
 542
 543 endef