target/linux/apm821xx/image/Makefile

   1 #
   2 # This is free software, licensed under the GNU General Public License v2.
   3 # See /LICENSE for more information.
   4 #
   5 include $(TOPDIR)/rules.mk
   6 include $(INCLUDE_DIR)/image.mk
   7
   8 DEVICE_VARS += DTB_SIZE
   9
  10 define Build/boot-img
  11         $(RM) -rf $@.bootdir
  12         mkdir -p $@.bootdir/boot
  13
  14         $(CP) $@.scr $@.bootdir/boot/boot.scr
  15         $(CP) $(IMAGE_KERNEL).dtb $@.bootdir/boot/$(DEVICE_DTB)
  16         $(CP) $(IMAGE_KERNEL) $@.bootdir/boot/uImage
  17
  18         genext2fs --block-size $(BLOCKSIZE:%k=%Ki) \
  19                 --size-in-blocks $$((1024 * $(CONFIG_TARGET_KERNEL_PARTSIZE))) \
  20                 --root $@.bootdir $@.boot
  21
  22         # convert it to revision 1 - needed for u-boot ext2load
  23         $(STAGING_DIR_HOST)/bin/tune2fs -O filetype $@.boot
  24         $(STAGING_DIR_HOST)/bin/e2fsck -pDf $@.boot > /dev/null
  25 endef
  26
  27 define Build/boot-script
  28         $(STAGING_DIR_HOST)/bin/mkimage -A powerpc -T script -C none -n "$(PROFILE) Boot Script" \
  29                 -d mbl_boot.scr \
  30                 $@.scr
  31 endef
  32
  33 define Build/copy-file
  34         cat "$(1)" > "$@"
  35 endef
  36
  37 define Build/dtb
  38         $(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb,,--space $(DTB_SIZE))
  39 endef
  40
  41 define Build/export-dtb
  42         cp $(IMAGE_KERNEL).dtb $@
  43 endef
  44
  45 define Build/MuImage-initramfs
  46         rm -rf $@.fakerd $@.new
  47
  48         dd if=/dev/zero of=$@.fakerd bs=32 count=1 conv=sync
  49
  50         # Netgear used an old uboot that doesn't have FIT support.
  51         # So we are stuck with either a full ext2/4 fs in a initrd.
  52         # ... or we try to make the "multi" image approach to work
  53         # for us.
  54         #
  55         # Sadly, the "multi" image has to consists of three
  56         # "fixed" parts in the following "fixed" order:
  57         # 1. The kernel which is in $@
  58         # 2. The (fake) initrd which is in $@.fakerd
  59         # 3. The device tree binary which is in $@.dtb
  60         #
  61         # Now, given that we use the function for the kernel which
  62         # already has a initramfs image inside, we still have to
  63         # add a "fake" initrd (which a mkimage header) in the second
  64         # part of the legacy multi image. Since we need to put the
  65         # device tree stuff into part 3.
  66
  67         -$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T multi \
  68                 -C $(1) -a $(KERNEL_LOADADDR) -e $(KERNEL_ENTRY) \
  69                 -n '$(BOARD_NAME) initramfs' -d $@:$@.fakerd:$@.dtb $@.new
  70         mv $@.new $@
  71         rm -rf $@.fakerd
  72 endef
  73
  74 define Build/prepend-dtb
  75         cat "$@.dtb.uimage" "$@" > "$@.new"
  76         mv "$@.new" "$@"
  77 endef
  78
  79 define Image/cpiogz
  80         ( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz )
  81 endef
  82
  83 define Device/Default
  84   PROFILES := Default
  85   KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
  86   DEVICE_DTS :=
  87   KERNEL_ENTRY := 0x00000000
  88   KERNEL_LOADADDR := 0x00000000
  89   DEVICE_DTS_DIR := ../dts
  90   DEVICE_DTS = $(subst _,-,$(1))
  91 endef
  92
  93 include $(SUBTARGET).mk
  94
  95 $(eval $(call BuildImage))