image: remove padding parameter from append-kernel/append-rootfs

Using pad-to instead of passing the optional padding to append-kernel
or append-rootfs. It could be that the value of a variable is passed.
In case the variable is empty no error is thrown.

Furthermore the purpose of the extra parameter is hard to get without
reading the code.

Signed-off-by: Mathias Kresin <dev@kresin.me>

include/image-commands.mk

@@ -103,11 +103,11 @@ define Build/patch-cmdline
 endef
 
 define Build/append-kernel
-	dd if=$(IMAGE_KERNEL) $(if $(1),bs=$(1) conv=sync) >> $@
+	dd if=$(IMAGE_KERNEL) >> $@
 endef
 
 define Build/append-rootfs
-	dd if=$(IMAGE_ROOTFS) $(if $(1),bs=$(1) conv=sync) >> $@
+	dd if=$(IMAGE_ROOTFS) >> $@
 endef
 
 define Build/append-ubi

target/linux/ar71xx/image/Makefile

@@ -94,7 +94,7 @@ define Device/Default
   KERNEL := kernel-bin | patch-cmdline | lzma | uImage lzma
   COMPILE :=
   IMAGES := sysupgrade.bin
-  IMAGE/sysupgrade.bin = append-kernel $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 $(eval $(call BuildImage))

target/linux/ar71xx/image/generic.mk

@@ -106,7 +106,7 @@ define Device/wndr3700
   MTDPARTS = spi0.0:320k(u-boot)ro,128k(u-boot-env)ro,7680k(firmware),64k(art)ro
   IMAGES := sysupgrade.bin factory.img factory-NA.img
   KERNEL := kernel-bin | patch-cmdline | lzma -d20 | netgear-uImage lzma
-  IMAGE/default = append-kernel $$$$(BLOCKSIZE) | netgear-squashfs | append-rootfs | pad-rootfs
+  IMAGE/default = append-kernel | pad-to $$$$(BLOCKSIZE) | netgear-squashfs | append-rootfs | pad-rootfs
   IMAGE/sysupgrade.bin = $$(IMAGE/default) | check-size $$$$(IMAGE_SIZE)
   IMAGE/factory.img = $$(IMAGE/default) | netgear-dni | check-size $$$$(IMAGE_SIZE)
   IMAGE/factory-NA.img = $$(IMAGE/default) | netgear-dni NA | check-size $$$$(IMAGE_SIZE)
@@ -410,7 +410,7 @@ define Device/NBG6616
   CMDLINE += mem=128M
   IMAGES := sysupgrade.bin
   KERNEL := kernel-bin | patch-cmdline | lzma | uImage lzma | jffs2 boot/vmlinux.lzma.uImage
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
   # We cannot currently build a factory image. It is the sysupgrade image
   # prefixed with a header (which is actually written into the MTD device).
   # The header is 2kiB and is filled with 0xff. The format seems to be:
@@ -443,7 +443,7 @@ define Device/c-55
   KERNEL_SIZE = 2048k
   IMAGE_SIZE = 15872k
   MTDPARTS = spi0.0:256k(u-boot)ro,128k(u-boot-env)ro,2048k(kernel),13824k(rootfs),13824k(opt)ro,2624k(failsafe)ro,64k(art)ro,15872k@0x60000(firmware)
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 TARGET_DEVICES += c-55

target/linux/ar71xx/image/ubnt.mk

@@ -48,7 +48,7 @@ define Device/ubnt-xm
   UBNT_CHIP := ar7240
   IMAGES := sysupgrade.bin factory.bin
   IMAGE/factory.bin = $$(IMAGE/sysupgrade.bin) | mkubntimage-split
-  IMAGE/sysupgrade.bin = append-kernel $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 define Device/ubnt-xw
@@ -61,7 +61,7 @@ define Device/ubnt-xw
   UBNT_CHIP := ar934x
   IMAGES := sysupgrade.bin factory.bin
   IMAGE/factory.bin = $$(IMAGE/sysupgrade.bin) | mkubntimage-split
-  IMAGE/sysupgrade.bin = append-kernel $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 define Device/ubnt-bz
@@ -74,7 +74,7 @@ define Device/ubnt-bz
   UBNT_CHIP := ar934x
   IMAGES := sysupgrade.bin factory.bin
   IMAGE/factory.bin = $$(IMAGE/sysupgrade.bin) | mkubntimage-split
-  IMAGE/sysupgrade.bin = append-kernel $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 define Device/ubnt-unifiac
@@ -83,7 +83,7 @@ define Device/ubnt-unifiac
   IMAGE_SIZE := 7744k
   MTDPARTS = spi0.0:384k(u-boot)ro,64k(u-boot-env)ro,7744k(firmware),7744k(ubnt-airos)ro,128k(bs)ro,256k(cfg)ro,64k(EEPROM)ro
   IMAGES := sysupgrade.bin
-  IMAGE/sysupgrade.bin = append-kernel $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 define Device/rw2458n
@@ -261,7 +261,7 @@ define Device/ubnt-uap-pro
   DEVICE_PROFILE := UBNT UAPPRO
   KERNEL := kernel-bin | patch-cmdline | lzma | uImage lzma | jffs2 kernel0
   IMAGES := sysupgrade.bin factory.bin
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
   IMAGE/factory.bin = $$(IMAGE/sysupgrade.bin) | mkubntimage2
 endef
 

target/linux/kirkwood/image/Makefile

@@ -59,7 +59,7 @@ define Device/linksys-audi
   FILESYSTEMS := squashfs
   PROFILES := Generic AUDI
   IMAGES += factory.bin
-  IMAGE/factory.bin := append-kernel $$$$(KERNEL_SIZE) | append-ubi
+  IMAGE/factory.bin := append-kernel | pad-to $$$$(KERNEL_SIZE) | append-ubi
 endef
 
 define Device/linksys-viper
@@ -68,7 +68,7 @@ define Device/linksys-viper
   FILESYSTEMS := squashfs
   PROFILES := Generic VIPER
   IMAGES += factory.bin
-  IMAGE/factory.bin := append-kernel $$$$(KERNEL_SIZE) | append-ubi
+  IMAGE/factory.bin := append-kernel | pad-to $$$$(KERNEL_SIZE) | append-ubi
 endef
 
 define Image/BuildKernel/Template

target/linux/mvebu/image/Makefile

@@ -71,7 +71,7 @@ define Device/UBI-factory
   $(Device/UBI)
   UBINIZE_OPTS := -E 5
   IMAGES += factory.img
-  IMAGE/factory.img := append-kernel $$$$(KERNEL_SIZE) | append-ubi | pad-to $$$$(PAGESIZE)
+  IMAGE/factory.img := append-kernel | pad-to $$$$(KERNEL_SIZE) | append-ubi | pad-to $$$$(PAGESIZE)
 endef
 
 define Device/NAND-128K
@@ -167,7 +167,7 @@ TARGET_DEVICES += armada-370-db armada-370-rd armada-xp-db armada-xp-gp
 define Device/armada-388-rd
   DEVICE_TITLE := Marvell Armada 388 RD (RD-88F6820-AP)
   IMAGES := firmware.bin
-  IMAGE/firmware.bin := append-kernel 256k | append-rootfs | pad-rootfs
+  IMAGE/firmware.bin := append-kernel | pad-to 256k | append-rootfs | pad-rootfs
 endef
 TARGET_DEVICES += armada-388-rd