summaryrefslogtreecommitdiff
path: root/include/image.mk
blob: fd5e3f4b62a4ca2d092c124fc354c6dcc3661b87 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
#
# Copyright (C) 2006-2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

override TARGET_BUILD=
include $(INCLUDE_DIR)/prereq.mk
include $(INCLUDE_DIR)/kernel.mk
include $(INCLUDE_DIR)/host.mk
include $(INCLUDE_DIR)/version.mk

override MAKE:=$(_SINGLE)$(SUBMAKE)
override NO_TRACE_MAKE:=$(_SINGLE)$(NO_TRACE_MAKE)

KDIR=$(KERNEL_BUILD_DIR)
KDIR_TMP=$(KDIR)/tmp
DTS_DIR:=$(LINUX_DIR)/arch/$(ARCH)/boot/dts/

IMG_PREFIX:=openwrt-$(if $(CONFIG_VERSION_FILENAMES),$(VERSION_NUMBER)-)$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))

MKFS_DEVTABLE_OPT := -D $(INCLUDE_DIR)/device_table.txt

ifneq ($(CONFIG_BIG_ENDIAN),)
  JFFS2OPTS     :=  --big-endian --squash-uids -v
else
  JFFS2OPTS     :=  --little-endian --squash-uids -v
endif

ifeq ($(CONFIG_JFFS2_RTIME),y)
  JFFS2OPTS += -X rtime
endif
ifeq ($(CONFIG_JFFS2_ZLIB),y)
  JFFS2OPTS += -X zlib
endif
ifeq ($(CONFIG_JFFS2_LZMA),y)
  JFFS2OPTS += -X lzma --compression-mode=size
endif
ifneq ($(CONFIG_JFFS2_RTIME),y)
  JFFS2OPTS += -x rtime
endif
ifneq ($(CONFIG_JFFS2_ZLIB),y)
  JFFS2OPTS += -x zlib
endif
ifneq ($(CONFIG_JFFS2_LZMA),y)
  JFFS2OPTS += -x lzma
endif

JFFS2OPTS += $(MKFS_DEVTABLE_OPT)

SQUASHFS_BLOCKSIZE := $(CONFIG_TARGET_SQUASHFS_BLOCK_SIZE)k
SQUASHFSOPT := -b $(SQUASHFS_BLOCKSIZE)
SQUASHFSOPT += -p '/dev d 755 0 0' -p '/dev/console c 600 0 0 5 1'
SQUASHFSCOMP := gzip
LZMA_XZ_OPTIONS := -Xpreset 9 -Xe -Xlc 0 -Xlp 2 -Xpb 2
ifeq ($(CONFIG_SQUASHFS_LZMA),y)
  SQUASHFSCOMP := lzma $(LZMA_XZ_OPTIONS)
endif
ifeq ($(CONFIG_SQUASHFS_XZ),y)
  ifneq ($(filter arm x86 powerpc sparc,$(LINUX_KARCH)),)
    BCJ_FILTER:=-Xbcj $(LINUX_KARCH)
  endif
  SQUASHFSCOMP := xz $(LZMA_XZ_OPTIONS) $(BCJ_FILTER)
endif

JFFS2_BLOCKSIZE ?= 64k 128k

fs-types-$(CONFIG_TARGET_ROOTFS_SQUASHFS) += squashfs
fs-types-$(CONFIG_TARGET_ROOTFS_JFFS2) += $(addprefix jffs2-,$(JFFS2_BLOCKSIZE))
fs-types-$(CONFIG_TARGET_ROOTFS_JFFS2_NAND) += $(addprefix jffs2-nand-,$(NAND_BLOCKSIZE))
fs-types-$(CONFIG_TARGET_ROOTFS_EXT4FS) += ext4
fs-types-$(CONFIG_TARGET_ROOTFS_ISO) += iso
fs-subtypes-$(CONFIG_TARGET_ROOTFS_JFFS2) += $(addsuffix -raw,$(addprefix jffs2-,$(JFFS2_BLOCKSIZE)))
fs-subtypes-$(CONFIG_TARGET_ROOTFS_CPIOGZ) += cpiogz
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

define toupper
$(shell echo $(1) | tr '[:lower:]' '[:upper:]')
endef

define tolower
$(shell echo $(1) | tr '[:upper:]' '[:lower:]')
endef

define sanitize
$(shell echo $(call tolower,$(1)) | sed 's/_/-/g')
endef

PROFILE_SANITIZED := $(call sanitize,$(PROFILE))

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
endef

define Image/BuildKernel/Initramfs
	$(call Image/Build/Initramfs)
endef

define Image/BuildKernel/MkuImage
	mkimage -A $(ARCH) -O linux -T kernel -C $(1) -a $(2) -e $(3) \
		-n '$(call toupper,$(ARCH)) OpenWrt Linux-$(LINUX_VERSION)' -d $(4) $(5)
endef

define Image/BuildKernel/MkFIT
	$(TOPDIR)/scripts/mkits.sh \
		-D $(1) -o $(KDIR)/fit-$(1).its -k $(2) $(if $(3),-d $(3)) -C $(4) -a $(5) -e $(6) \
		-A $(ARCH) -v $(LINUX_VERSION)
	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/fit-$(1).its $(KDIR)/fit-$(1)$(7).itb
endef

# $(1) source dts file
# $(2) target dtb file
# $(3) extra CPP flags
# $(4) extra DTC flags
define Image/BuildDTB
	$(CPP) -nostdinc -x assembler-with-cpp \
		-I$(LINUX_DIR)/arch/$(ARCH)/boot/dts \
		-I$(LINUX_DIR)/arch/$(ARCH)/boot/dts/include \
		-undef -D__DTS__ $(3) \
		-o $(2).tmp $(1)
	$(LINUX_DIR)/scripts/dtc/dtc -O dtb \
		-i$(dir $(1)) $(4) \
		-o $(2) $(2).tmp
	$(RM) $(2).tmp
endef

define Image/mkfs/jffs2/sub
		$(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 '/^.+$$$$/'
		$(call add_jffs2_mark,$(KDIR)/root.jffs2-$(2))
endef

define Image/mkfs/jffs2/sub-raw
		$(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 '/^.+$$$$/'
endef

define Image/mkfs/jffs2/template
  Image/mkfs/jffs2-$(1) = $$(call Image/mkfs/jffs2/sub,$(1),$(1),$(JFFS2OPTS))
  Image/mkfs/jffs2-$(1)-raw = $$(call Image/mkfs/jffs2/sub-raw,$(1),$(1),$(JFFS2OPTS))

endef

define Image/mkfs/jffs2-nand/template
  Image/mkfs/jffs2-nand-$(1) = \
	$$(call Image/mkfs/jffs2/sub, \
		$(word 2,$(subst -, ,$(1))),nand-$(1), \
			$(JFFS2OPTS) --no-cleanmarkers --pagesize=$(word 1,$(subst -, ,$(1))))

endef

$(eval $(foreach S,$(JFFS2_BLOCKSIZE),$(call Image/mkfs/jffs2/template,$(S))))
$(eval $(foreach S,$(NAND_BLOCKSIZE),$(call Image/mkfs/jffs2-nand/template,$(S))))

define Image/mkfs/squashfs
	$(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)
endef

# $(1): board name
# $(2): rootfs type
# $(3): kernel image
ifneq ($(CONFIG_NAND_SUPPORT),)
   define Image/Build/SysupgradeNAND
	mkdir -p "$(KDIR_TMP)/sysupgrade-$(1)/"
	echo "BOARD=$(1)" > "$(KDIR_TMP)/sysupgrade-$(1)/CONTROL"
	[ -z "$(2)" ] || $(CP) "$(KDIR)/root.$(2)" "$(KDIR_TMP)/sysupgrade-$(1)/root"
	[ -z "$(3)" ] || $(CP) "$(3)" "$(KDIR_TMP)/sysupgrade-$(1)/kernel"
	(cd "$(KDIR_TMP)"; $(TAR) cvf \
		"$(BIN_DIR)/$(IMG_PREFIX)-$(1)-$(2)-sysupgrade.tar" sysupgrade-$(1))
   endef

# $(1) board name
# $(2) ubinize-image options (e.g. --uboot-env and/or --kernel kernelimage)
# $(3) rootfstype (e.g. squashfs or ubifs)
# $(4) options to pass-through to ubinize (i.e. $($(PROFILE)_UBI_OPTS)))
   define Image/Build/UbinizeImage
	sh $(TOPDIR)/scripts/ubinize-image.sh $(2) \
		"$(KDIR)/root.$(3)" \
		"$(KDIR)/$(IMG_PREFIX)-$(1)-$(3)-ubinized.bin" \
		$(4)
   endef

endif

ifneq ($(CONFIG_TARGET_ROOTFS_UBIFS),)
    define Image/mkfs/ubifs/generate
	$(CP) ./ubinize$(1).cfg $(KDIR)
	( cd $(KDIR); \
		$(STAGING_DIR_HOST)/bin/ubinize \
		$(if $($(PROFILE)_UBI_OPTS), \
			$(shell echo $($(PROFILE)_UBI_OPTS)), \
			$(shell echo $(UBI_OPTS)) \
		) \
		-o $(KDIR)/root$(1).ubi \
		ubinize$(1).cfg \
	)
    endef

    define Image/mkfs/ubifs

        ifneq ($($(PROFILE)_UBIFS_OPTS)$(UBIFS_OPTS),)
		$(STAGING_DIR_HOST)/bin/mkfs.ubifs \
			$(if $($(PROFILE)_UBIFS_OPTS), \
				$(shell echo $($(PROFILE)_UBIFS_OPTS)), \
				$(shell echo $(UBIFS_OPTS)) \
			) \
			$(if $(CONFIG_TARGET_UBIFS_FREE_SPACE_FIXUP),--space-fixup) \
			$(if $(CONFIG_TARGET_UBIFS_COMPRESSION_NONE),--force-compr=none) \
			$(if $(CONFIG_TARGET_UBIFS_COMPRESSION_LZO),--force-compr=lzo) \
			$(if $(CONFIG_TARGET_UBIFS_COMPRESSION_ZLIB),--force-compr=zlib) \
			$(if $(shell echo $(CONFIG_TARGET_UBIFS_JOURNAL_SIZE)),--jrn-size=$(CONFIG_TARGET_UBIFS_JOURNAL_SIZE)) \
			--squash-uids \
			-o $(KDIR)/root.ubifs \
			-d $(TARGET_DIR)
        endif
	$(call Image/Build,ubifs)

        ifneq ($($(PROFILE)_UBI_OPTS)$(UBI_OPTS),)
		$(if $(wildcard ./ubinize.cfg),$(call Image/mkfs/ubifs/generate,))
		$(if $(wildcard ./ubinize-overlay.cfg),$(call Image/mkfs/ubifs/generate,-overlay))
        endif
	$(if $(wildcard ./ubinize.cfg),$(call Image/Build,ubi))
    endef
endif

define Image/mkfs/cpiogz
	( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(BIN_DIR)/$(IMG_PREFIX)-rootfs.cpio.gz )
endef

define Image/mkfs/targz
	$(TAR) -czpf $(BIN_DIR)/$(IMG_PREFIX)$(if $(PROFILE_SANITIZED),-$(PROFILE_SANITIZED))-rootfs.tar.gz --numeric-owner --owner=0 --group=0 --sort=name -C $(TARGET_DIR)/ .
endef

E2SIZE=$(shell echo $$(($(CONFIG_TARGET_ROOTFS_PARTSIZE)*1024*1024)))

define Image/mkfs/ext4
	$(STAGING_DIR_HOST)/bin/make_ext4fs \
		-l $(E2SIZE) -b $(CONFIG_TARGET_EXT4_BLOCKSIZE) \
		-i $(CONFIG_TARGET_EXT4_MAXINODE) \
		-m $(CONFIG_TARGET_EXT4_RESERVED_PCT) \
		$(if $(CONFIG_TARGET_EXT4_JOURNAL),,-J) \
		$(KDIR)/root.ext4 $(TARGET_DIR)/
endef

define Image/mkfs/prepare/default
	# Use symbolic permissions to avoid clobbering SUID/SGID/sticky bits
	- $(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
	- $(FIND) $(TARGET_DIR) -type f -perm /0100 -print0 | $(XARGS) -0 chmod u+rwx,g+rx,o+rx
	- $(FIND) $(TARGET_DIR) -type d -print0 | $(XARGS) -0 chmod u+rwx,g+rx,o+rx
	$(INSTALL_DIR) $(TARGET_DIR)/tmp $(TARGET_DIR)/overlay
	chmod 1777 $(TARGET_DIR)/tmp
endef

define Image/mkfs/prepare
	$(call Image/mkfs/prepare/default)
endef


define Image/Checksum
	( cd ${BIN_DIR} ; \
		$(FIND) -maxdepth 1 -type f \! -name 'md5sums'  -printf "%P\n" | sort | xargs $1 > $2 \
	)
endef

define BuildImage/mkfs
  install: mkfs-$(1)
  .PHONY: mkfs-$(1)
  mkfs-$(1): kernel_prepare
	$(Image/mkfs/$(1))
	$(call Build/mkfs/default,$(1))
	$(call Build/mkfs/$(1),$(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/netgear-chk
	$(STAGING_DIR_HOST)/bin/mkchkimg \
		-o $@.new \
		-k $@ \
		-b $(NETGEAR_BOARD_ID) \
		-r $(NETGEAR_REGION)
	mv $@.new $@
endef

define Build/netgear-dni
	$(STAGING_DIR_HOST)/bin/mkdniimg \
		-B $(NETGEAR_BOARD_ID) -v OpenWrt.$(REVISION) \
		$(if $(NETGEAR_HW_ID),-H $(NETGEAR_HW_ID)) \
		-r "$(1)" \
		-i $@ -o $@.new
	mv $@.new $@
endef

define Build/fit
	$(TOPDIR)/scripts/mkits.sh \
		-D $(DEVICE_NAME) -o $@.its -k $@ \
		$(if $(word 2,$(1)),-d $(word 2,$(1))) -C $(word 1,$(1)) \
		-a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
		-A $(ARCH) -v $(LINUX_VERSION)
	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $@.its $@.new
	@mv $@.new $@
endef

define Build/lzma
	$(STAGING_DIR_HOST)/bin/lzma e $@ -lc1 -lp2 -pb2 $(1) $@.new
	@mv $@.new $@
endef

define Build/gzip
	gzip -9n -c $@ $(1) > $@.new
	@mv $@.new $@
endef

define Build/jffs2
	rm -rf $(KDIR_TMP)/$(DEVICE_NAME)/jffs2 && \
		mkdir -p $(KDIR_TMP)/$(DEVICE_NAME)/jffs2/$$(dirname $(1)) && \
		cp $@ $(KDIR_TMP)/$(DEVICE_NAME)/jffs2/$(1) && \
		$(STAGING_DIR_HOST)/bin/mkfs.jffs2 --pad \
			$(if $(CONFIG_BIG_ENDIAN),--big-endian,--little-endian) \
			--squash-uids -v -e $(patsubst %k,%KiB,$(BLOCKSIZE)) \
			-o $@.new \
			-d $(KDIR_TMP)/$(DEVICE_NAME)/jffs2 \
			2>&1 1>/dev/null | awk '/^.+$$$$/' && \
		$(STAGING_DIR_HOST)/bin/padjffs2 $@.new -J $(patsubst %k,,$(BLOCKSIZE))
	-rm -rf $(KDIR_TMP)/$(DEVICE_NAME)/jffs2/
	@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/append-ubi
	sh $(TOPDIR)/scripts/ubinize-image.sh \
		$(if $(KERNEL_IN_UBI),--kernel $(word 1,$^)) \
		$(word 2,$^) \
		$@.tmp \
		-p $(BLOCKSIZE) -m $(PAGESIZE) -E 5 \
		$(if $(SUBPAGESIZE),-s $(SUBPAGESIZE))
	cat $@.tmp >> $@
	rm $@.tmp
endef

define Build/pad-to
	dd if=$@ of=$@.new bs=$(1) conv=sync
	mv $@.new $@
endef

define Build/pad-rootfs
	$(call prepare_generic_squashfs,$@ $(1))
endef

define Build/pad-offset
	let \
		size="$$(stat -c%s $@)" \
		pad="$(word 1, $(1))" \
		offset="$(word 2, $(1))" \
		pad="(pad - ((size + offset) % pad)) % pad" \
		newsize='size + pad'; \
		dd if=$@ of=$@.new bs=$$newsize count=1 conv=sync
	mv $@.new $@
endef

define Build/check-size
	@[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -ge "$$(stat -c%s $@)" ] || { \
		echo "WARNING: Image file $@ is too big" >&2; \
		rm -f $@; \
	}
endef

define Build/combined-image
	-sh $(TOPDIR)/scripts/combined-image.sh \
		"$(word 1,$^)" \
		"$@" \
		"$@.new"
	@mv $@.new $@
endef

define Build/sysupgrade-nand
	sh $(TOPDIR)/scripts/sysupgrade-nand.sh \
		--board $(if $(BOARD_NAME),$(BOARD_NAME),$(DEVICE_NAME)) \
		--kernel $(word 1,$^) \
		--rootfs $(word 2,$^) \
		$@
endef

define Device/Init
  PROFILES := $(PROFILE)
  DEVICE_NAME := $(1)
  KERNEL:=
  KERNEL_INITRAMFS = $$(KERNEL)
  KERNEL_SIZE:=
  CMDLINE:=

  IMAGE_PREFIX := $(IMG_PREFIX)-$(1)
  IMAGE_NAME = $$(IMAGE_PREFIX)-$$(1)-$$(2)
  KERNEL_PREFIX = $(1)
  KERNEL_SUFFIX := -kernel.bin
  KERNEL_IMAGE = $$(KERNEL_PREFIX)$$(KERNEL_SUFFIX)
  KERNEL_INITRAMFS_PREFIX = $$(IMAGE_PREFIX)-initramfs
  KERNEL_INITRAMFS_IMAGE = $$(KERNEL_INITRAMFS_PREFIX)$$(KERNEL_SUFFIX)
  KERNEL_INITRAMFS_NAME = $$(KERNEL_NAME)-initramfs
  KERNEL_INSTALL :=
  KERNEL_NAME := vmlinux
  KERNEL_SIZE :=

  FILESYSTEMS := $(TARGET_FILESYSTEMS)
endef

define Device/ExportVar
  $(1) : $(2):=$$($(2))

endef
define Device/Export
  $(foreach var,$(DEVICE_VARS) DEVICE_NAME KERNEL KERNEL_INITRAMFS,$(call Device/ExportVar,$(1),$(var)))
  $(1) : FILESYSTEM:=$(2)
endef

define Device/Check
  _TARGET = $$(if $$(filter $(PROFILE),$$(PROFILES)),install,install-disabled)
  _COMPILE_TARGET = $$(if $(if $(IB),,$(CONFIG_IB)$$(filter $(PROFILE),$$(PROFILES))),compile,compile-disabled)
endef

ifndef IB
define Device/Build/initramfs
  $(call Device/Export,$(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE),$(1))
  $$(_TARGET): $(BIN_DIR)/$$(KERNEL_INITRAMFS_IMAGE)

  $(KDIR)/$$(KERNEL_INITRAMFS_NAME): image_prepare
  $(BIN_DIR)/$$(KERNEL_INITRAMFS_IMAGE): $(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE)
	cp $$^ $$@

  $(KDIR)/tmp/$$(KERNEL_INITRAMFS_IMAGE): $(KDIR)/$$(KERNEL_INITRAMFS_NAME)
	@rm -f $$@
	$$(call concat_cmd,$$(KERNEL_INITRAMFS))
endef
endif

define Device/Build/check_size
	@[ $$(($(subst k,* 1024,$(subst m, * 1024k,$(1))))) -ge "$$(stat -c%s $@)" ] || { \
		echo "WARNING: Image file $@ is too big" >&2; \
		rm -f $@; \
	}
endef

define Device/Build/compile
  $$(_COMPILE_TARGET): $(KDIR)/$(1)
  $(eval $(call Device/Export,$(KDIR)/$(1)))
  $(KDIR)/$(1):
	$$(call concat_cmd,$(COMPILE/$(1)))

endef

define Device/Build/kernel
  _KERNEL_IMAGES += $(KDIR)/$$(KERNEL_NAME)
  $(KDIR)/$$(KERNEL_NAME): image_prepare
  $$(_TARGET): $$(if $$(KERNEL_INSTALL),$(BIN_DIR)/$$(KERNEL_IMAGE))
  $(call Device/Export,$(KDIR)/$$(KERNEL_IMAGE),$(1))
  $(BIN_DIR)/$$(KERNEL_IMAGE): $(KDIR)/$$(KERNEL_IMAGE)
	cp $$^ $$@
  ifndef IB
    ifdef CONFIG_IB
      install: $(KDIR)/$$(KERNEL_IMAGE)
    endif
    $(KDIR)/$$(KERNEL_IMAGE): $(KDIR)/$$(KERNEL_NAME)
	@rm -f $$@
	$$(call concat_cmd,$$(KERNEL))
	$$(if $$(KERNEL_SIZE),$$(call Device/Build/check_size,$$(KERNEL_SIZE)))
  endif
endef

define Device/Build/image
  $$(_TARGET): $(BIN_DIR)/$(call IMAGE_NAME,$(1),$(2))
  $(eval $(call Device/Export,$(KDIR)/tmp/$(call IMAGE_NAME,$(1),$(2)),$(1)))
  $(KDIR)/tmp/$(call IMAGE_NAME,$(1),$(2)): $(KDIR)/$$(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))))

  .IGNORE: $(BIN_DIR)/$(call IMAGE_NAME,$(1),$(2))
  $(BIN_DIR)/$(call IMAGE_NAME,$(1),$(2)): $(KDIR)/tmp/$(call IMAGE_NAME,$(1),$(2))
	cp $$^ $$@

endef

define Device/Build
  $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),$(call Device/Build/initramfs,$(1)))
  $(call Device/Build/kernel,$(1))

  $$(eval $$(foreach compile,$$(COMPILE), \
    $$(call Device/Build/compile,$$(compile),$(1))))

  $$(eval $$(foreach image,$$(IMAGES), \
    $$(foreach fs,$$(filter $(TARGET_FILESYSTEMS),$$(FILESYSTEMS)), \
      $$(call Device/Build/image,$$(fs),$$(image),$(1)))))
endef

define Device
  $(call Device/Init,$(1))
  $(call Device/Default,$(1))
  $(call Device/Check,$(1))
  $(call Device/$(1),$(1))
  $(call Device/Build,$(1))

endef

define BuildImage

  download:
  prepare:
  compile:
  clean:
  image_prepare:

  ifeq ($(IB),)
    .PHONY: download prepare compile clean image_prepare mkfs_prepare kernel_prepare install
    compile:
		$(call Build/Compile)

    clean:
		$(call Build/Clean)

    image_prepare: compile
		mkdir -p $(KDIR)/tmp
		$(call Image/Prepare)
  else
    image_prepare:
		mkdir -p $(KDIR)/tmp
  endif

  mkfs_prepare: image_prepare
	$(call Image/mkfs/prepare)

  kernel_prepare: mkfs_prepare
	$(call Image/BuildKernel)
	$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),$(if $(IB),,$(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)))

  $$(sort $$(_KERNEL_IMAGES)):
	@touch $$@

  install: kernel_prepare
	$(foreach fs,$(TARGET_FILESYSTEMS),
		$(call Image/Build,$(fs))
	)
	$(call Image/mkfs/ubifs)
	$(call Image/Checksum,md5sum --binary,md5sums)
	$(call Image/Checksum,openssl dgst -sha256,sha256sums)

endef