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97 lines
2.6 KiB
Makefile
97 lines
2.6 KiB
Makefile
#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/image.mk
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DEVICE_VARS += DTB_SIZE
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define Build/boot-img
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$(RM) -rf $@.bootdir
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mkdir -p $@.bootdir/boot
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$(CP) $@.scr $@.bootdir/boot/boot.scr
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$(CP) $(IMAGE_KERNEL).dtb $@.bootdir/boot/$(DEVICE_DTB)
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$(CP) $(IMAGE_KERNEL) $@.bootdir/boot/uImage
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genext2fs --block-size $(BLOCKSIZE:%k=%Ki) \
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--size-in-blocks $$((1024 * $(CONFIG_TARGET_KERNEL_PARTSIZE))) \
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--root $@.bootdir $@.boot
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# convert it to revision 1 - needed for u-boot ext2load
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$(STAGING_DIR_HOST)/bin/tune2fs -O filetype $@.boot
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$(STAGING_DIR_HOST)/bin/e2fsck -pDf $@.boot > /dev/null
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endef
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define Build/boot-script
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$(STAGING_DIR_HOST)/bin/mkimage -A powerpc -T script -C none -n "$(PROFILE) Boot Script" \
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-d mbl_boot.scr \
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$@.scr
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endef
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define Build/copy-file
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cat "$(1)" > "$@"
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endef
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define Build/dtb
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$(call Image/BuildDTB,../dts/$(DEVICE_DTS).dts,$@.dtb,,--space $(DTB_SIZE))
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endef
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define Build/export-dtb
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cp $(IMAGE_KERNEL).dtb $@
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endef
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define Build/MuImage-initramfs
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rm -rf $@.fakerd $@.new
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dd if=/dev/zero of=$@.fakerd bs=32 count=1 conv=sync
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# Netgear used an old uboot that doesn't have FIT support.
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# So we are stuck with either a full ext2/4 fs in a initrd.
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# ... or we try to make the "multi" image approach to work
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# for us.
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#
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# Sadly, the "multi" image has to consists of three
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# "fixed" parts in the following "fixed" order:
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# 1. The kernel which is in $@
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# 2. The (fake) initrd which is in $@.fakerd
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# 3. The device tree binary which is in $@.dtb
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#
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# Now, given that we use the function for the kernel which
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# already has a initramfs image inside, we still have to
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# add a "fake" initrd (which a mkimage header) in the second
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# part of the legacy multi image. Since we need to put the
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# device tree stuff into part 3.
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-$(STAGING_DIR_HOST)/bin/mkimage -A $(LINUX_KARCH) -O linux -T multi \
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-C $(1) -a $(KERNEL_LOADADDR) -e $(KERNEL_ENTRY) \
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-n '$(BOARD_NAME) initramfs' -d $@:$@.fakerd:$@.dtb $@.new
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mv $@.new $@
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rm -rf $@.fakerd
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endef
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define Build/prepend-dtb
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cat "$@.dtb.uimage" "$@" > "$@.new"
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mv "$@.new" "$@"
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endef
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define Image/cpiogz
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( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9n >$(KDIR_TMP)/$(IMG_PREFIX)-rootfs.cpio.gz )
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endef
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define Device/Default
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PROFILES := Default
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KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
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DEVICE_DTS :=
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KERNEL_ENTRY := 0x00000000
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KERNEL_LOADADDR := 0x00000000
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DEVICE_DTS_DIR := ../dts
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DEVICE_DTS = $(subst _,-,$(1))
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SUPPORTED_DEVICES = $(subst _,$(comma),$(1))
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endef
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include $(SUBTARGET).mk
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$(eval $(call BuildImage))
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