build: centralize fakeroot code

This patch moves the fakeroot code required by some devices to
`image-commands.mk`.

Create the fakeroot on the fly by using the undocumented -s (skip copy)
parameter of mkimage.

Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>
[remove unused NETGEAR_KERNEL_MAGIC, remove workarounds to have a dummy
rootfs for mkimage]
Signed-off-by: Mathias Kresin <dev@kresin.me>

diff --git a/include/image-commands.mk b/include/image-commands.mk
index 7d124ece19baa2a4f47ac7b650e9b975ce806363..49e438954a804f487652603d7e6682716b533c2b 100644 (file)
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -62,6 +62,18 @@ define Build/netgear-dni
        mv $@.new $@
 endef
 
+# append a fake/empty rootfs uImage header, to fool the bootloaders
+# rootfs integrity check
+define Build/append-uImage-fakeroot-hdr
+       rm -f $@.fakeroot
+       $(STAGING_DIR_HOST)/bin/mkimage \
+               -A $(LINUX_KARCH) -O linux -T filesystem -C none \
+               -n '$(call toupper,$(LINUX_KARCH)) LEDE fakeroot' \
+               -s \
+               $@.fakeroot
+       cat $@.fakeroot >> $@
+endef
+
 define Build/tplink-safeloader
        -$(STAGING_DIR_HOST)/bin/tplink-safeloader \
                -B $(TPLINK_BOARD_NAME) \
@@ -143,10 +155,6 @@ define Build/append-rootfs
        dd if=$(IMAGE_ROOTFS) >> $@
 endef
 
-define Build/append-file
-       cat "$(1)" >> "$@"
-endef
-
 define Build/append-ubi
        sh $(TOPDIR)/scripts/ubinize-image.sh \
                $(if $(UBOOTENV_IN_UBI),--uboot-env) \

diff --git a/target/linux/apm821xx/image/Makefile b/target/linux/apm821xx/image/Makefile
index 0ded83dd9995bb3739ea6b769c17d60ba438b03b..a11e9897052f4c957cd2c01305557762d04f71ef 100644 (file)
--- a/target/linux/apm821xx/image/Makefile
+++ b/target/linux/apm821xx/image/Makefile
@@ -129,23 +129,6 @@ define Build/create-uImage-dtb
        @mv $@.new $@
 endef
 
-define Build/append-fakerootfs
-       rm -rf $@.fakerootsquashfs $@.fakefs
-
-       # append a fake/empty rootfs to fool netgear's uboot
-       # CHECK_DNI_FIRMWARE_ROOTFS_INTEGRITY in do_chk_dniimg()
-       dd if=/dev/zero of=$@.fakerd bs=16 count=1 conv=sync
-
-       -$(STAGING_DIR_HOST)/bin/mkimage \
-               -A $(LINUX_KARCH) -O linux -T filesystem -C none \
-               -a 0x00000000 -e 0x00000000 \
-               -n '$(DEVICE_PROFILE) fakerootfs' \
-               -d $@.fakerd $@.fakefs
-
-       cat $@.fakefs >> $@
-       rm -rf $@.fakerootsquashfs $@.fakefs
-endef
-
 define Build/wndr4700-specialImage
        rm -rf $@.fakerd $@.new
 
@@ -192,7 +175,8 @@ define Device/WNDR4700
   IMAGE_SIZE := 24960k
   IMAGES := factory.img sysupgrade.tar kernel.dtb
   KERNEL_SIZE := 1920k
-  KERNEL := dtb | kernel-bin | lzma | uImage lzma | pad-offset $$(BLOCKSIZE) 64 | append-fakerootfs
+  KERNEL := dtb | kernel-bin | lzma | uImage lzma | pad-offset $$(BLOCKSIZE) 64 | \
+         append-uImage-fakeroot-hdr
   KERNEL_INITRAMFS := kernel-bin | gzip | dtb | wndr4700-specialImage gzip
   IMAGE/factory.img := create-uImage-dtb | append-kernel | pad-to 2M | append-ubi | \
                       netgear-dni | check-size $$$$(IMAGE_SIZE)

diff --git a/target/linux/ipq806x/image/Makefile b/target/linux/ipq806x/image/Makefile
index 33dc31d41edab3d6d78230f82b6bba9678dba65e..b00e19758644850e80ccfda635980020f05f2023 100644 (file)
--- a/target/linux/ipq806x/image/Makefile
+++ b/target/linux/ipq806x/image/Makefile
@@ -9,12 +9,6 @@ KERNEL_LOADADDR := 0x42208000
 
 define Image/Prepare
        $(CP) $(LINUX_DIR)/vmlinux $(KDIR)/$(IMG_PREFIX)-vmlinux.elf
-       mkimage -A arm -O linux -T filesystem -C none \
-               -a $(KERNEL_LOADADDR) -e $(KERNEL_LOADADDR) \
-               -n 'ARM OpenWrt fakeroot' \
-               -s $(KDIR_TMP)/root.dummy-uImage.tmp
-       echo -ne '\xff' > $(KDIR_TMP)/root.dummy
-       cat $(KDIR_TMP)/root.dummy $(KDIR_TMP)/root.dummy-uImage.tmp > $(KDIR)/root.dummy
 endef
 
 define Image/BuildKernel
@@ -64,7 +58,8 @@ define Device/DniImage
        FILESYSTEMS := squashfs
        KERNEL_SUFFIX := -uImage
        KERNEL_INITRAMFS := kernel-bin | append-dtb | uImage none
-       KERNEL = kernel-bin | append-dtb | pad-to $$$$(($$(KERNEL_SIZE)-2*64-1)) | uImage none | append-file $(KDIR)/root.dummy
+       KERNEL = kernel-bin | append-dtb | uImage none | pad-offset $$(KERNEL_SIZE) 64 | \
+               append-uImage-fakeroot-hdr
        KERNEL_NAME := zImage
        NETGEAR_BOARD_ID :=
        NETGEAR_HW_ID :=
@@ -161,7 +156,7 @@ define Device/EA8500
        BLOCKSIZE := 128k
        KERNEL_SIZE := 3072k
        FILESYSTEMS := squashfs
-       KERNEL = kernel-bin | append-dtb | uImage none | append-file $(KDIR)/root.dummy
+       KERNEL = kernel-bin | append-dtb | uImage none | append-uImage-fakeroot-hdr
        PROFILES += $$(DEVICE_NAME)
        BOARD_NAME := ea8500
        UBINIZE_OPTS := -E 5

diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index 50eae2f63e5f5a7ee6618ca20a12f78153a252a5..446bd9981e28bec21f62416fcca05b85d8ec8f2a 100644 (file)
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -58,7 +58,7 @@ define Device/ex2700
   BLOCKSIZE := 4k
   IMAGE_SIZE := $(ralink_default_fw_size_4M)
   IMAGES += factory.bin
-  KERNEL := $(KERNEL_DTB) | uImage lzma | pad-offset 64k 64 | append-file netgear-fake-uImage-hdr.bin
+  KERNEL := $(KERNEL_DTB) | uImage lzma | pad-offset 64k 64 | append-uImage-fakeroot-hdr
   IMAGE/factory.bin := $$(sysupgrade_bin) | check-size $$$$(IMAGE_SIZE) | \
        netgear-dni
   DEVICE_TITLE := Netgear EX2700
@@ -71,7 +71,7 @@ define Device/wn3000rpv3
   DTS := WN3000RPV3
   BLOCKSIZE := 4k
   IMAGES += factory.bin
-  KERNEL := $(KERNEL_DTB) | uImage lzma | pad-offset 64k 64 | append-file netgear-fake-uImage-hdr.bin
+  KERNEL := $(KERNEL_DTB) | uImage lzma | pad-offset 64k 64 | append-uImage-fakeroot-hdr
   IMAGE/factory.bin := $$(sysupgrade_bin) | check-size $$$$(IMAGE_SIZE) | \
        netgear-dni
   DEVICE_TITLE := Netgear WN3000RPv3

diff --git a/target/linux/ramips/image/netgear-fake-uImage-hdr.bin b/target/linux/ramips/image/netgear-fake-uImage-hdr.bin
deleted file mode 100644 (file)
index 9a534b6..0000000
Binary files a/target/linux/ramips/image/netgear-fake-uImage-hdr.bin and /dev/null differ