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# SPDX-License-Identifier: GPL-2.0-only
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
DEVICE_VARS += DTB_SIZE
define Build/boot-img
$(RM) -rf $@.bootdir
mkdir -p $@.bootdir/boot
$(CP) $@.scr $@.bootdir/boot/boot.scr
$(CP) $(IMAGE_KERNEL).dtb $@.bootdir/boot/$(DEVICE_DTB)
$(CP) $(IMAGE_KERNEL) $@.bootdir/boot/uImage
genext2fs --block-size $(BLOCKSIZE:%k=%Ki) \
--size-in-blocks $$((1024 * $(CONFIG_TARGET_KERNEL_PARTSIZE))) \
--root $@.bootdir $@.boot
# convert it to revision 1 - needed for u-boot ext2load
$(STAGING_DIR_HOST)/bin/tune2fs -O filetype $@.boot
$(STAGING_DIR_HOST)/bin/e2fsck -pDf $@.boot > /dev/null
endef
define Build/boot-script
$(STAGING_DIR_HOST)/bin/mkimage -A powerpc -T script -C none -n "$(PROFILE) Boot Script" \
-d mbl_boot.scr \
$@.scr
endef
define Build/dtb
$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb,,--space $(DTB_SIZE))
endef
define Build/export-dtb
cp $(IMAGE_KERNEL).dtb $@
endef
define Build/MuImage-initramfs
rm -rf $@.fakerd $@.new
dd if=/dev/zero of=$@.fakerd bs=32 count=1 conv=sync
# Netgear used an old uboot that doesn't have FIT support.
# So we are stuck with either a full ext2/4 fs in a initrd.
# ... or we try to make the "multi" image approach to work
# for us.
#
# Sadly, the "multi" image has to consists of three
# "fixed" parts in the following "fixed" order:
# 1. The kernel which is in $@
# 2. The (fake) initrd which is in $@.fakerd
# 3. The device tree binary which is in $@.dtb
#
# Now, given that we use the function for the kernel which
# already has a initramfs image inside, we still have to
# add a "fake" initrd (which a mkimage header) in the second
# part of the legacy multi image. Since we need to put the
# device tree stuff into part 3.
-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T multi \
-C $(1) -a $(KERNEL_LOADADDR) -e $(KERNEL_ENTRY) \
-n '$(BOARD_NAME) initramfs' -d $@:$@.fakerd:$@.dtb $@.new
mv $@.new $@
rm -rf $@.fakerd
endef
define Build/prepend-dtb
cat "$@.dtb.uimage" "$@" > "$@.new"
mv "$@.new" "$@"
endef
define Image/cpiogz
( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz )
endef
define Device/Default
PROFILES := Default
KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
DEVICE_DTS :=
KERNEL_ENTRY := 0x00000000
KERNEL_LOADADDR := 0x00000000
DEVICE_DTS_DIR := ../dts
DEVICE_DTS = $(subst _,-,$(1))
endef
include $(SUBTARGET).mk
$(eval $(call BuildImage))
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