image: add a helper variable for getting kernel/rootfs from within image Build/* templates

Signed-off-by: Felix Fietkau <nbd@nbd.name>

include/image-commands.mk

@@ -1,5 +1,8 @@
 # Build commands that can be called from Device/* templates
 
+IMAGE_KERNEL = $(word 1,$^)
+IMAGE_ROOTFS = $(word 2,$^)
+
 define Build/uImage
 	mkimage -A $(LINUX_KARCH) \
 		-O linux -T kernel \
@@ -30,7 +33,7 @@ define Build/tplink-safeloader
        -$(STAGING_DIR_HOST)/bin/tplink-safeloader \
 		-B $(TPLINK_BOARD_NAME) \
 		-V $(REVISION) \
-		-k $(word 1,$^) \
+		-k $(IMAGE_KERNEL) \
 		-r $@ \
 		-o $@.new \
 		-j \
@@ -92,18 +95,18 @@ define Build/patch-cmdline
 endef
 
 define Build/append-kernel
-	dd if=$(word 1,$^) $(if $(1),bs=$(1) conv=sync) >> $@
+	dd if=$(IMAGE_KERNEL) $(if $(1),bs=$(1) conv=sync) >> $@
 endef
 
 define Build/append-rootfs
-	dd if=$(word 2,$^) $(if $(1),bs=$(1) conv=sync) >> $@
+	dd if=$(IMAGE_ROOTFS) $(if $(1),bs=$(1) conv=sync) >> $@
 endef
 
 define Build/append-ubi
 	sh $(TOPDIR)/scripts/ubinize-image.sh \
 		$(if $(UBOOTENV_IN_UBI),--uboot-env) \
-		$(if $(KERNEL_IN_UBI),--kernel $(word 1,$^)) \
-		$(word 2,$^) \
+		$(if $(KERNEL_IN_UBI),--kernel $(IMAGE_KERNEL)) \
+		$(IMAGE_ROOTFS) \
 		$@.tmp \
 		-p $(BLOCKSIZE) -m $(PAGESIZE) \
 		$(if $(SUBPAGESIZE),-s $(SUBPAGESIZE)) \
@@ -142,7 +145,7 @@ endef
 
 define Build/combined-image
 	-sh $(TOPDIR)/scripts/combined-image.sh \
-		"$(word 1,$^)" \
+		"$(IMAGE_KERNEL)" \
 		"$@" \
 		"$@.new"
 	@mv $@.new $@
@@ -151,7 +154,7 @@ endef
 define Build/sysupgrade-tar
 	sh $(TOPDIR)/scripts/sysupgrade-tar.sh \
 		--board $(if $(BOARD_NAME),$(BOARD_NAME),$(DEVICE_NAME)) \
-		--kernel $(call param_get_default,kernel,$(1),$(word 1,$^)) \
-		--rootfs $(call param_get_default,rootfs,$(1),$(word 2,$^)) \
+		--kernel $(call param_get_default,kernel,$(1),$(IMAGE_KERNEL)) \
+		--rootfs $(call param_get_default,rootfs,$(1),$(IMAGE_ROOTFS)) \
 		$@
 endef

target/linux/apm821xx/image/Makefile

@@ -179,7 +179,7 @@ define Build/boot-img
 
 	$(CP) $@.scr $@.bootdir/boot/boot.scr
 	$(CP) $@.dtb $@.bootdir/boot/$(DEVICE_DTB)
-	$(CP) $(word 1,$^) $@.bootdir/boot/uImage
+	$(CP) $(IMAGE_KERNEL) $@.bootdir/boot/uImage
 
 	genext2fs --block-size $(BLOCKSIZE) --size-in-blocks $$((1024 * $(BOOT_SIZE))) --root $@.bootdir $@.boot
 
@@ -189,7 +189,7 @@ define Build/boot-img
 endef
 
 define Build/hdd-img
-	./mbl_gen_hdd_img.sh $@ $@.boot $(word 2,$^)
+	./mbl_gen_hdd_img.sh $@ $@.boot $(IMAGE_ROOTFS)
 	$(if $(CONFIG_TARGET_IMAGES_GZIP),gzip -9n -c $@ > $(BIN_DIR)/$(notdir $@).gz)
 endef
 
@@ -204,9 +204,9 @@ endef
 define Build/recovery-tar
 	sh ./mbl_gen_recovery_tar.sh \
 		--profile $(DEVICE_PROFILE) \
-		--dtb $(word 1,$^).dtb \
+		--dtb $(IMAGE_KERNEL).dtb \
 		--dtbname $(DEVICE_DTB) \
-		--kernel $(word 1,$^) \
+		--kernel $(IMAGE_KERNEL) \
 		--rootfs $@ \
 		$@
 endef

target/linux/ar71xx/image/generic.mk

@@ -476,8 +476,8 @@ TARGET_DEVICES += hiwifi-hc6361
 # - 28 bytes seama_header
 # - 36 bytes of META data (4-bytes aligned)
 define Build/seama-factory
-	( dd if=/dev/zero bs=64 count=1; cat $(word 1,$^) ) >$@.loader.tmp
-	( dd if=$@.loader.tmp bs=64k conv=sync; dd if=$(word 2,$^) ) >$@.tmp.0
+	( dd if=/dev/zero bs=64 count=1; cat $(IMAGE_KERNEL) ) >$@.loader.tmp
+	( dd if=$@.loader.tmp bs=64k conv=sync; dd if=$(IMAGE_ROOTFS) ) >$@.tmp.0
 	tail -c +65 $@.tmp.0 >$@.tmp.1
 	$(STAGING_DIR_HOST)/bin/seama \
 		-i $@.tmp.1 \
@@ -491,10 +491,10 @@ endef
 
 define Build/seama-sysupgrade
 	$(STAGING_DIR_HOST)/bin/seama \
-		-i $(word 1,$^) \
+		-i $(IMAGE_KERNEL) \
 		-m "dev=/dev/mtdblock/1" -m "type=firmware"
-	( dd if=$(word 1,$^).seama bs=64k conv=sync; dd if=$(word 2,$^) ) >$@
-	rm -f $(word 1,$^).seama
+	( dd if=$(IMAGE_KERNEL).seama bs=64k conv=sync; dd if=$(IMAGE_ROOTFS) ) >$@
+	rm -f $(IMAGE_KERNEL).seama
 endef
 
 define Build/seama-initramfs
@@ -505,7 +505,7 @@ define Build/seama-initramfs
 endef
 
 define Build/seama-pad-rootfs
-	$(STAGING_DIR_HOST)/bin/padjffs2 $(word 2,$^) -c 64 >>$@
+	$(STAGING_DIR_HOST)/bin/padjffs2 $(IMAGE_ROOTFS) -c 64 >>$@
 endef
 
 define Device/seama

target/linux/ar71xx/image/tp-link.mk

@@ -12,7 +12,7 @@ define Build/mktplinkfw
 	-$(STAGING_DIR_HOST)/bin/mktplinkfw \
 		-H $(TPLINK_HWID) -W $(TPLINK_HWREV) -F $(TPLINK_FLASHLAYOUT) -N OpenWrt -V $(REVISION) \
 		-m $(TPLINK_HEADER_VERSION) \
-		-k $(word 1,$^) \
+		-k $(IMAGE_KERNEL) \
 		-r $@ \
 		-o $@.new \
 		-j -X 0x40000 \

target/linux/ar71xx/image/ubnt.mk

@@ -7,7 +7,7 @@
 define Build/mkubntimage
 	$(STAGING_DIR_HOST)/bin/mkfwimage \
 		-B $(UBNT_BOARD) -v $(UBNT_TYPE).$(UBNT_CHIP).v6.0.0-OpenWrt-$(REVISION) \
-		-k $(word 1,$^) \
+		-k $(IMAGE_KERNEL) \
 		-r $@ \
 		-o $@
 endef

target/linux/ath25/image/Makefile

@@ -10,24 +10,24 @@ include $(INCLUDE_DIR)/image.mk
 define Build/mkfwimage
 	$(STAGING_DIR_HOST)/bin/mkfwimage \
 		-B $(1).OpenWrt.$(REVISION) \
-		-k $(word 1,$^) \
-		-r $(word 2,$^) \
+		-k $(IMAGE_KERNEL) \
+		-r $(IMAGE_ROOTFS) \
 		-o $@.new && \
 	mv $@.new $@
 endef
 
 define Build/combined-image
 	-sh $(TOPDIR)/scripts/combined-image.sh \
-		"$(word 1,$^)" \
-		"$(word 2,$^)" \
+		"$(IMAGE_KERNEL)" \
+		"$(IMAGE_ROOTFS)" \
 		"$@.new" && \
 	mv $@.new $@
 endef
 
 define Build/mkmylofw
 	$(STAGING_DIR_HOST)/bin/mkmylofw -B $(1) \
-		-p0x020000:0x130000:ah:0x80041000:linux:$(word 1,$^) \
-		-p0x150000:0x2a0000:::rootfs:$(word 2,$^) \
+		-p0x020000:0x130000:ah:0x80041000:linux:$(IMAGE_KERNEL) \
+		-p0x150000:0x2a0000:::rootfs:$(IMAGE_ROOTFS) \
 		$@.new && \
 	mv $@.new $@
 endef

target/linux/bcm53xx/image/Makefile

@@ -26,7 +26,7 @@ define Build/trx-serial
 	$(STAGING_DIR_HOST)/bin/trx \
 		-o $@.new \
 		-m 33554432 \
-		-f $(word 1,$^) -a 1024 \
+		-f $(IMAGE_KERNEL) -a 1024 \
 		-f $@ -a 0x10000 -A $(KDIR)/fs_mark
 	mv $@.new $@
 endef
@@ -39,7 +39,7 @@ define Build/trx-nand
 	$(STAGING_DIR_HOST)/bin/trx \
 		-o $@.new \
 		-m 33554432 \
-		-f $(word 1,$^) -a 0x20000 -b 0x400000 \
+		-f $(IMAGE_KERNEL) -a 0x20000 -b 0x400000 \
 		-f $@ \
 		-A $(KDIR)/ubi_mark -a 0x20000
 	mv $@.new $@
@@ -57,7 +57,7 @@ define Build/seama-nand
 		entity $@.entity \
 		-m "dev=/dev/mtdblock/7" \
 		-m "type=firmware" \
-		-f $(word 1,$^) \
+		-f $(IMAGE_KERNEL) \
 		-b 0x400000 \
 		-f $@ \
 		-f $(KDIR)/ubi_mark

target/linux/brcm2708/image/Makefile

@@ -30,7 +30,7 @@ define Build/boot-img
 	mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
 	mcopy -i $@.boot cmdline.txt ::
 	mcopy -i $@.boot config.txt ::
-	mcopy -i $@.boot $(word 1,$^) ::kernel.img
+	mcopy -i $@.boot $(IMAGE_KERNEL) ::kernel.img
 	$(foreach dts,$(shell echo $(DEVICE_DTS)),mcopy -i $@.boot $(DTS_DIR)/$(dts).dtb ::;)
 	mmd -i $@.boot ::/overlays
 	mcopy -i $@.boot $(DTS_DIR)/overlays/*.dtbo ::/overlays/
@@ -38,7 +38,7 @@ define Build/boot-img
 endef
 
 define Build/sdcard-img
-	./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
+	./gen_rpi_sdcard_img.sh $@ $@.boot $(IMAGE_ROOTFS) \
 		$(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
 	$(if $(CONFIG_TARGET_IMAGES_GZIP),gzip -9n -c $@ > $(BIN_DIR)/$(notdir $@).gz)
 endef

target/linux/brcm47xx/image/Makefile

@@ -53,7 +53,7 @@ define Build/trx-with-loader
 		-m 33554432 \
 		-o $@ \
 		-f $(KDIR)/loader.gz \
-		-f $(word 1,$^) \
+		-f $(IMAGE_KERNEL) \
 		$(call trxalign/$(FILESYSTEM),$(FILESYSTEM))
 endef
 
@@ -72,7 +72,7 @@ define Build/trx-without-loader
 	$(STAGING_DIR_HOST)/bin/trx \
 		-m 33554432 \
 		-o $@ \
-		-f $(word 1,$^) \
+		-f $(IMAGE_KERNEL) \
 		$(call trxalign/$(FILESYSTEM),$(FILESYSTEM))
 endef
 

target/linux/brcm63xx/image/Makefile

@@ -102,12 +102,12 @@ $(subst root.,,$(notdir $(1)))
 endef
 
 define Build/cfe-bin
-	$(STAGING_DIR_HOST)/bin/imagetag -i $(word 1,$^) -f $(word 2,$^) \
+	$(STAGING_DIR_HOST)/bin/imagetag -i $(IMAGE_KERNEL) -f $(IMAGE_ROOTFS) \
 		--output $@ --boardid $(CFE_BOARD_ID) --chipid $(CFE_CHIP_ID) \
 		--entry $(LOADER_ENTRY) --load-addr $(LOADER_ENTRY) \
 		--info1 "$(call Image/LimitName16,$(DEVICE_NAME))" \
-		--info2 "$(call Image/FileSystemStrip,$(word 2,$^))" \
-		$(call rootfspad/$(call Image/FileSystemStrip,$(word 2,$^))) \
+		--info2 "$(call Image/FileSystemStrip,$(IMAGE_ROOTFS))" \
+		$(call rootfspad/$(call Image/FileSystemStrip,$(IMAGE_ROOTFS))) \
 		$(CFE_EXTRAS) $(1)
 endef
 
@@ -115,15 +115,15 @@ define Build/cfe-old-bin
 	$(TOPDIR)/scripts/brcmImage.pl -t -p \
 		-o $@ -b $(CFE_BOARD_ID) -c $(CFE_CHIP_ID) \
 		-e $(LOADER_ENTRY) -a $(LOADER_ENTRY) \
-		-k $(word 1,$^) -r $(word 2,$^) \
+		-k $(IMAGE_KERNEL) -r $(IMAGE_ROOTFS) \
 		$(CFE_EXTRAS)
 endef
 
 define Build/cfe-spw303v-bin
-	$(STAGING_DIR_HOST)/bin/imagetag -i $(word 1,$^) -f $(word 2,$^) \
+	$(STAGING_DIR_HOST)/bin/imagetag -i $(IMAGE_KERNEL) -f $(IMAGE_ROOTFS) \
 		--output $@ --boardid $(CFE_BOARD_ID) --chipid $(CFE_CHIP_ID) \
 		--entry $(LOADER_ENTRY) --load-addr $(LOADER_ENTRY) \
-		$(call rootfspad/$(call Image/FileSystemStrip,$(word 2,$^))) \
+		$(call rootfspad/$(call Image/FileSystemStrip,$(IMAGE_ROOTFS))) \
 		$(CFE_EXTRAS) $(1)
 endef
 
@@ -144,20 +144,20 @@ endef
 
 define Build/redboot-bin
 	# Prepare kernel and rootfs
-	dd if=$(word 1,$^) of=$(BIN_DIR)/$(REDBOOT_PREFIX)-vmlinux.gz bs=65536 conv=sync
-	dd if=$(word 2,$^) of=$(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(word 2,$^)) bs=64k conv=sync
-	echo -ne \\xDE\\xAD\\xC0\\xDE >> $(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(word 2,$^))
+	dd if=$(IMAGE_KERNEL) of=$(BIN_DIR)/$(REDBOOT_PREFIX)-vmlinux.gz bs=65536 conv=sync
+	dd if=$(IMAGE_ROOTFS) of=$(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(IMAGE_ROOTFS)) bs=64k conv=sync
+	echo -ne \\xDE\\xAD\\xC0\\xDE >> $(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(IMAGE_ROOTFS))
 	# Generate the scripted image
 	$(TOPDIR)/scripts/redboot-script.pl \
 		-k $(BIN_DIR)/$(REDBOOT_PREFIX)-vmlinux.gz \
-		-r $(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(word 2,$^)) \
+		-r $(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(IMAGE_ROOTFS)) \
 		-a $(strip $(LOADADDR)) -f 0xbe430000 -l 0x7c0000 \
 		-s 0x1000 -t 20 -o $@.redbootscript
 	dd if="$@.redbootscript" of="$@.redbootscript.padded" bs=4096 conv=sync
 	cat \
 		"$@.redbootscript.padded" \
 		"$(BIN_DIR)/$(REDBOOT_PREFIX)-vmlinux.gz" \
-		"$(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(word 2,$^))" \
+		"$(BIN_DIR)/$(REDBOOT_PREFIX)-$(notdir $(IMAGE_ROOTFS))" \
 		> "$@"
 endef
 

target/linux/lantiq/image/Makefile

@@ -152,21 +152,21 @@ define Build/mkbrncmdline
 endef
 
 define Build/mkbrnimg
-   mkbrnimg -s $(SIGNATURE) -m $(MAGIC) -p $(CRC32_POLY) -o $@ $(word 1,$^) $(word 2,$^)
+   mkbrnimg -s $(SIGNATURE) -m $(MAGIC) -p $(CRC32_POLY) -o $@ $(IMAGE_KERNEL) $(IMAGE_ROOTFS)
 endef
 
 define Build/fullimage
 	mkimage -A mips -O linux -C lzma -T filesystem -a 0x00  \
 		-e 0x00 -n 'LEDE RootFS' \
-		-d $(word 2,$^) $(word 2,$^).new
+		-d $(IMAGE_ROOTFS) $(IMAGE_ROOTFS).new
 
-	cat $(word 1,$^) $(word 2,$^).new > $@.tmp
+	cat $(IMAGE_KERNEL) $(IMAGE_ROOTFS).new > $@.tmp
 
 	mkimage -A mips -O linux -T multi -a 0x00 -C none \
 		-e 0x00 -n 'OpenWrt fullimage' \
 		-d $@.tmp $@
 
-	rm $(word 2,$^).new
+	rm $(IMAGE_ROOTFS).new
 	rm $@.tmp
 endef
 

target/linux/lantiq/image/tp-link.mk

@@ -6,7 +6,7 @@ endef
 
 define Build/mktplinkfw2
 	mktplinkfw2 -B $(BOARD_ID) -s -a 0x4 -j \
-		-k $(word 1,$^) -r $(word 2,$^) \
+		-k $(IMAGE_KERNEL) -r $(IMAGE_ROOTFS) \
 		-o $@
 endef
 DEVICE_VARS += BOARD_ID

target/linux/ramips/image/Makefile

@@ -49,8 +49,8 @@ define Build/trx
 	$(STAGING_DIR_HOST)/bin/trx \
 		-o $@ \
 		-m $(IMAGE_SIZE) \
-		-f $(word 1,$^) \
-		-a 4 -f $(word 2,$^)
+		-f $(IMAGE_KERNEL) \
+		-a 4 -f $(IMAGE_ROOTFS)
 endef
 
 define Build/relocate-kernel