#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
include $(INCLUDE_DIR)/host.mk

DEVICE_VARS += DEVICE_PROFILE IMAGE_SIZE DTB_SIZE

define Device/Default
  PROFILES := Default
  KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
  DEVICE_PROFILE :=
  DEVICE_DTS :=
  KERNEL_ENTRY := 0x00000000
  KERNEL_LOADADDR := 0x00000000
  DEVICE_DTS_DIR := ../dts
endef

define Build/dtb
	$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb,,--space $(DTB_SIZE))
endef

ifeq ($(SUBTARGET),nand)

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

define Build/copy-file
	cat "$(1)" > "$@"
endef

define Build/MerakiAdd-dtb
	$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb)
	( \
		dd if=$@.dtb bs=$(DTB_SIZE) conv=sync; \
		dd if=$@ bs=$(BLOCKSIZE) conv=sync; \
	) > $@.new
	@mv $@.new $@
endef

define Build/MerakiAdd-initramfs
	$(call Image/cpiogz)

	-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T ramdisk \
		-C gzip -n "$(PROFILE) rootfs" \
		-d $(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz \
		$(KDIR_TMP)/$(IMG_PREFIX)-uramdisk.image.gz

	( \
		dd if=$@ bs=1k conv=sync; \
		dd if=$(KDIR_TMP)/$(IMG_PREFIX)-uramdisk.image.gz bs=$(BLOCKSIZE) conv=sync; \
	) > $@.new
	@mv $@.new $@
endef

define Build/MerakiNAND
	-$(STAGING_DIR_HOST)/bin/mkmerakifw \
		-B $(DEVICE_PROFILE) -s \
		-i $@ \
		-o $@.new
	@cp $@.new $@
endef

define Device/mr24
  DEVICE_TITLE := Cisco Meraki MR24
  DEVICE_PACKAGES := kmod-spi-gpio kmod-ath9k wpad-mini
  DEVICE_PROFILE := MR24
  DEVICE_DTS := MR24
  BLOCKSIZE := 64512
  IMAGES := sysupgrade.tar
  DTB_SIZE := 64512
  KERNEL_SIZE := 2048k
  IMAGE_SIZE := 8191k
  KERNEL := kernel-bin | lzma | uImage lzma | MerakiAdd-dtb | MerakiNAND
  KERNEL_INITRAMFS := copy-file $(KDIR)/vmlinux | lzma | uImage lzma | MerakiAdd-dtb | pad-to 2047k | MerakiAdd-initramfs | MerakiNAND
  IMAGE/sysupgrade.tar := sysupgrade-nand
endef
TARGET_DEVICES += mr24

define Build/create-uImage-dtb
	# flat_dt target expect FIT image - which WNDR4700's uboot doesn't support
	-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) \
		-O linux -T kernel -C none \
		-n '$(call toupper,$(LINUX_KARCH)) LEDE Linux-$(LINUX_VERSION)' \
		-d $@.dtb $@.new
	@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

	dd if=/dev/zero of=$@.fakerd bs=32 count=1 conv=sync

	# Netgear used an old uboot that doesn't have FIT support.
	# So we are stuck with either a full ext2/4 fs in a initrd.
	# ... or we try to make the "multi" image approach to work
	# for us.
	#
	# Sadly, the "multi" image has to consists of three
	# "fixed" parts in the following "fixed" order:
	# 1. The kernel which is in $@
	# 2. The (fake) initrd which is in $@.fakerd
	# 3. The device tree binary which is in $@.dtb
	#
	# Now, given that we use the function for the kernel which
	# already has a initramfs image inside, we still have to
	# add a "fake" initrd (which a mkimage header) in the second
	# part of the legacy multi image. Since we need to put the
	# device tree stuff into part 3.

	-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T multi \
		-C $(1) -a $(KERNEL_LOADADDR) -e $(KERNEL_ENTRY) \
		-n '$(DEVICE_PROFILE) initramfs' -d $@:$@.fakerd:$@.dtb $@.new
	mv $@.new $@
	rm -rf $@.fakerd
endef

define Device/WNDR4700
  DEVICE_TITLE := Netgear Centria N900 WNDR4700/WNDR4720
  DEVICE_PACKAGES := badblocks block-mount e2fsprogs \
	kmod-ath9k kmod-dm kmod-fs-ext4 kmod-fs-vfat kmod-ledtrig-usbdev \
	kmod-md-mod kmod-nls-cp437 kmod-nls-iso8859-1 kmod-nls-iso8859-15 \
	kmod-nls-utf8 kmod-usb3 kmod-usb-dwc2 kmod-usb-storage \
	partx-utils swconfig wpad-mini
  DEVICE_NAME := wndr4700
  DEVICE_PROFILE := wndr4700
  DEVICE_DTS := wndr4700
  PAGESIZE := 2048
  SUBPAGESIZE := 512
  BLOCKSIZE := 131072
  DTB_SIZE := 131008
  IMAGE_SIZE:=25559040
  IMAGES := factory.img sysupgrade.tar
  KERNEL_SIZE := 1920k
  KERNEL := kernel-bin | lzma | uImage lzma | pad-offset $$(BLOCKSIZE) 64 | append-fakerootfs
  KERNEL_INITRAMFS := kernel-bin | gzip | dtb | wndr4700-specialImage gzip
  IMAGE/factory.img := dtb | create-uImage-dtb | append-kernel | pad-to 2M | append-ubi | \
		       netgear-dni | check-size $$$$(IMAGE_SIZE)
  IMAGE/sysupgrade.tar := sysupgrade-nand
  NETGEAR_BOARD_ID := WNDR4700
  NETGEAR_HW_ID := 29763875+128+256
endef
TARGET_DEVICES += WNDR4700

endif

ifeq ($(SUBTARGET),sata)

### Image scripts for the WD My Book Live Series ###
define Build/boot-script
	$(STAGING_DIR_HOST)/bin/mkimage -A powerpc -T script -C none -n "$(PROFILE) Boot Script" \
		-d mbl_boot.scr \
		$@.scr
endef

define Build/boot-img
	$(RM) -rf $@.bootdir
	mkdir -p $@.bootdir/boot

	$(CP) $@.scr $@.bootdir/boot/boot.scr
	$(CP) $@.dtb $@.bootdir/boot/$(DEVICE_DTB)
	$(CP) $(word 1,$^) $@.bootdir/boot/uImage

	genext2fs --block-size $(BLOCKSIZE) --size-in-blocks $$((1024 * $(BOOT_SIZE))) --root $@.bootdir $@.boot

	# convert it to revision 1 - needed for u-boot ext2load
	$(STAGING_DIR_HOST)/bin/tune2fs -O filetype $@.boot
	$(STAGING_DIR_HOST)/bin/e2fsck -pDf $@.boot > /dev/null
endef

define Build/hdd-img
	./mbl_gen_hdd_img.sh $@ $@.boot $(word 2,$^)
	$(if $(CONFIG_TARGET_IMAGES_GZIP),gzip -9n -c $@ > $(BIN_DIR)/$(notdir $@).gz)
endef

define Build/uRamdisk
	$(STAGING_DIR_HOST)/bin/mkimage \
		-A powerpc -T ramdisk -C gzip \
		-n "$(DEVICE_NAME) rootfs" \
		-d $@ $@.new
	mv $@.new $@
endef

define Build/recovery-tar
	sh ./mbl_gen_recovery_tar.sh \
		--profile $(DEVICE_PROFILE) \
		--dtb $(word 1,$^).dtb \
		--dtbname $(DEVICE_DTB) \
		--kernel $(word 1,$^) \
		--rootfs $@ \
		$@
endef

define Device/MyBookLiveDefault
  IMAGE_SIZE := 48m
  BLOCKSIZE := 1024
  DTB_SIZE := 16384
  KERNEL := kernel-bin | dtb | gzip | uImage gzip
  BOOT_SIZE := 8
  IMAGES := rootfs.img recovery.tar kernel.dtb
  DEVICE_DTB := apollo3g.dtb
  FILESYSTEMS := ext4
  IMAGE/kernel.dtb := append-dtb
  IMAGE/rootfs.img := boot-script | dtb | boot-img | hdd-img
  IMAGE/recovery.tar := append-rootfs | gzip | uRamdisk | recovery-tar
endef

define Device/MyBookLiveSingle
$(Device/MyBookLiveDefault)
  DEVICE_TITLE := Western Digital My Book Live
  DEVICE_DTS := apollo3g
  DEVICE_PROFILE := apollo3g
endef

TARGET_DEVICES += MyBookLiveSingle

define Device/MyBookLiveDuo
$(Device/MyBookLiveDefault)
  DEVICE_TITLE := Western Digital My Book Live Duo
  DEVICE_PACKAGES := kmod-usb-dwc2 kmod-ledtrig-usbdev kmod-usb-storage kmod-fs-vfat wpad-mini
  DEVICE_DTS := apollo3g-duo
  DEVICE_PROFILE := ap2nc
endef

TARGET_DEVICES += MyBookLiveDuo

endif

$(eval $(call BuildImage))