target/linux/rockchip/image/Makefile

   1 # SPDX-License-Identifier: GPL-2.0-only
   2
   3 include $(TOPDIR)/rules.mk
   4 include $(INCLUDE_DIR)/image.mk
   5
   6 DEVICE_VARS += UBOOT_DEVICE_NAME
   7
   8 define Build/Compile
   9         $(CP) $(LINUX_DIR)/COPYING $(KDIR)/COPYING.linux
  10 endef
  11
  12 ### Image scripts ###
  13 define Build/boot-common
  14         # This creates a new folder copies the dtb (as rockchip.dtb)
  15         # and the kernel image (as kernel.img)
  16         rm -fR $@.boot
  17         mkdir -p $@.boot
  18
  19         $(CP) $(IMAGE_KERNEL) $@.boot/kernel.img
  20 endef
  21
  22 define Build/boot-script
  23         # Make an U-boot image and copy it to the boot partition
  24         mkimage -A arm -O linux -T script -C none -a 0 -e 0 -d $(if $(1),$(1),mmc).bootscript $@.boot/boot.scr
  25 endef
  26
  27 define Build/pine64-img
  28         # Creates the final SD/eMMC images,
  29         # combining boot partition, root partition as well as the u-boot bootloader
  30
  31         # Generate a new partition table in $@ with 32 MiB of
  32         # alignment padding for the idbloader and u-boot to fit:
  33         # http://opensource.rock-chips.com/wiki_Boot_option#Boot_flow
  34         #
  35         # U-Boot SPL expects the U-Boot ITB to be located at sector 0x4000 (8 MiB) on the MMC storage
  36         PADDING=1 $(SCRIPT_DIR)/gen_image_generic.sh \
  37                 $@ \
  38                 $(CONFIG_TARGET_KERNEL_PARTSIZE) $@.boot \
  39                 $(CONFIG_TARGET_ROOTFS_PARTSIZE) $(IMAGE_ROOTFS) \
  40                 32768
  41
  42         # Copy the idbloader and the u-boot image to the image at sector 0x40 and 0x4000
  43         dd if="$(STAGING_DIR_IMAGE)"/$(UBOOT_DEVICE_NAME)-idbloader.img of="$@" seek=64 conv=notrunc
  44         dd if="$(STAGING_DIR_IMAGE)"/$(UBOOT_DEVICE_NAME)-u-boot.itb of="$@" seek=16384 conv=notrunc
  45 endef
  46
  47 ### Devices ###
  48 define Device/Default
  49   PROFILES := Default
  50   KERNEL = kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb
  51   BOOT_SCRIPT :=
  52   IMAGES := sysupgrade.img.gz
  53   IMAGE/sysupgrade.img.gz = boot-common | boot-script $$(BOOT_SCRIPT) | pine64-img | gzip | append-metadata
  54   DEVICE_DTS = rockchip/$$(SOC)-$(lastword $(subst _, ,$(1)))
  55   UBOOT_DEVICE_NAME = $(lastword $(subst _, ,$(1)))-$$(SOC)
  56 endef
  57
  58 include $(SUBTARGET).mk
  59
  60 $(eval $(call BuildImage))