target/linux/apm821xx/image/Makefile

   1 # SPDX-License-Identifier: GPL-2.0-only
   2
   3 include $(TOPDIR)/rules.mk
   4 include $(INCLUDE_DIR)/image.mk
   5
   6 define Build/boot-img
   7         $(RM) -rf $@.bootdir
   8         mkdir -p $@.bootdir/boot
   9
  10         $(CP) $@.scr $@.bootdir/boot/boot.scr
  11         $(CP) $(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb $@.bootdir/boot/$(DEVICE_DTB)
  12         $(CP) $(IMAGE_KERNEL) $@.bootdir/boot/uImage
  13
  14         genext2fs --block-size $(BLOCKSIZE:%k=%Ki) \
  15                 --size-in-blocks $$((1024 * $(CONFIG_TARGET_KERNEL_PARTSIZE))) \
  16                 --root $@.bootdir $@.boot
  17
  18         # convert it to revision 1 - needed for u-boot ext2load
  19         $(STAGING_DIR_HOST)/bin/tune2fs -O filetype $@.boot
  20         $(STAGING_DIR_HOST)/bin/e2fsck -pDf $@.boot > /dev/null
  21 endef
  22
  23 define Build/boot-script
  24         $(STAGING_DIR_HOST)/bin/mkimage -A powerpc -T script -C none -n "$(PROFILE) Boot Script" \
  25                 -d mbl_boot.scr \
  26                 $@.scr
  27 endef
  28
  29 define Build/export-dtb
  30         cp $(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb $@
  31 endef
  32
  33 define Build/MuImage-initramfs
  34         rm -rf $@.fakerd $@.new
  35
  36         dd if=/dev/zero of=$@.fakerd bs=32 count=1 conv=sync
  37
  38         # Netgear used an old uboot that doesn't have FIT support.
  39         # So we are stuck with either a full ext2/4 fs in a initrd.
  40         # ... or we try to make the "multi" image approach to work
  41         # for us.
  42         #
  43         # Sadly, the "multi" image has to consists of three
  44         # "fixed" parts in the following "fixed" order:
  45         # 1. The kernel which is in $@
  46         # 2. The (fake) initrd which is in $@.fakerd
  47         # 3. The device tree binary which is in $@.dtb
  48         #
  49         # Now, given that we use the function for the kernel which
  50         # already has a initramfs image inside, we still have to
  51         # add a "fake" initrd (which a mkimage header) in the second
  52         # part of the legacy multi image. Since we need to put the
  53         # device tree stuff into part 3.
  54
  55         -$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T multi -C $(1) \
  56                 -a $(KERNEL_LOADADDR) -e $(KERNEL_ENTRY) -n '$(BOARD_NAME) initramfs' \
  57                 -d $@:$@.fakerd:$(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb $@.new
  58         mv $@.new $@
  59         rm -rf $@.fakerd
  60 endef
  61
  62 define Build/prepend-dtb
  63         cat "$(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb" "$@" > "$@.new"
  64         mv "$@.new" "$@"
  65 endef
  66
  67 define Image/cpiogz
  68         ( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz )
  69 endef
  70
  71 define Device/Default
  72   PROFILES := Default
  73   KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
  74   DEVICE_DTS :=
  75   KERNEL_ENTRY := 0x00000000
  76   KERNEL_LOADADDR := 0x00000000
  77   DEVICE_DTS_DIR := ../dts
  78   DEVICE_DTS = $(subst _,-,$(1))
  79 endef
  80
  81 include $(SUBTARGET).mk
  82
  83 $(eval $(call BuildImage))