target/linux/brcm2708/image/Makefile

   1 #
   2 # Copyright (C) 2012-2015 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7 include $(TOPDIR)/rules.mk
   8 include $(INCLUDE_DIR)/image.mk
   9 include $(INCLUDE_DIR)/host.mk
  10
  11 FAT32_BLOCK_SIZE=1024
  12 FAT32_BLOCKS=$(shell echo $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
  13
  14 ### Image scripts ###
  15 define Build/build-dtb
  16         $(LINUX_DIR)/scripts/dtc/dtc -O dtb -o $@.dtb $(DTS_DIR)/$(DEVICE_DTS).dts
  17 endef
  18
  19 define Build/gen-cfg
  20         cat config.txt > $@.config
  21         echo -e "\ndevice_tree=$(DEVICE_DTS).dtb" >> $@.config
  22 endef
  23
  24 define Build/boot-img
  25         rm -f $@.boot
  26         mkfs.fat -C $@.boot $(FAT32_BLOCKS)
  27         mcopy -i $@.boot $(KDIR)/bootcode.bin ::
  28         mcopy -i $@.boot $(KDIR)/COPYING.linux ::
  29         mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
  30         mcopy -i $@.boot $(KDIR)/start.elf ::
  31         mcopy -i $@.boot $(KDIR)/start_cd.elf ::
  32         mcopy -i $@.boot $(KDIR)/fixup.dat ::
  33         mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
  34         mcopy -i $@.boot cmdline.txt ::
  35         mcopy -i $@.boot $@.config ::config.txt
  36         mcopy -i $@.boot $(word 1,$^) ::kernel.img
  37         mcopy -i $@.boot $@.dtb ::$(DEVICE_DTS).dtb
  38 endef
  39
  40 define Build/sdcard-img
  41         ./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
  42                 $(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
  43   ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
  44         gzip -k -f9 $(BIN_DIR)/$(IMG_PREFIX)-sdcard-vfat-$(1).img
  45   endif
  46 endef
  47
  48 ### Device macros ###
  49 define Device/Default
  50   FILESYSTEMS := ext4
  51   PROFILES = Default $$(DEVICE_PROFILE)
  52   KERNEL := kernel-bin
  53   IMAGES := sdcard.bin
  54   IMAGE/sdcard.bin := build-dtb | gen-cfg | boot-img | sdcard-img
  55   DEVICE_PROFILE :=
  56   DEVICE_NAME :=
  57   DEVICE_DTS :=
  58 endef
  59 DEVICE_VARS += DEVICE_PROFILE DEVICE_NAME DEVICE_DTS
  60
  61 # $(1) = profile
  62 # $(2) = image name
  63 # $(3) = dts
  64 define add_bcm2708
  65   define Device/$(2)
  66     DEVICE_PROFILE := $(1)
  67     DEVICE_NAME := $(2)
  68     DEVICE_DTS := $(3)
  69   endef
  70   TARGET_DEVICES += $(2)
  71 endef
  72
  73 # Raspberry Pi Model B
  74 $(eval $(call add_bcm2708,RaspberryPi,rpi-b,bcm2708-rpi-b))
  75 # Raspberry Pi Model B+
  76 $(eval $(call add_bcm2708,RaspberryPi,rpi-b-plus,bcm2708-rpi-b-plus))
  77 # Raspberry Pi 2 Model B
  78 $(eval $(call add_bcm2708,RaspberryPi2,rpi-2-b,bcm2709-rpi-2-b))
  79
  80 $(eval $(call BuildImage))