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 $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
  13
  14 ### Image scripts ###
  15 define Build/gen-cfg
  16         cat config.txt > $@.config
  17         echo -e "\ndevice_tree=$(DEVICE_DTS).dtb" >> $@.config
  18 endef
  19
  20 define Build/boot-img
  21         rm -f $@.boot
  22         mkfs.fat -C $@.boot $(FAT32_BLOCKS)
  23         mcopy -i $@.boot $(KDIR)/bootcode.bin ::
  24         mcopy -i $@.boot $(KDIR)/COPYING.linux ::
  25         mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
  26         mcopy -i $@.boot $(KDIR)/start.elf ::
  27         mcopy -i $@.boot $(KDIR)/start_cd.elf ::
  28         mcopy -i $@.boot $(KDIR)/fixup.dat ::
  29         mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
  30         mcopy -i $@.boot cmdline.txt ::
  31         mcopy -i $@.boot $@.config ::config.txt
  32         mcopy -i $@.boot $(word 1,$^) ::kernel.img
  33         mcopy -i $@.boot $(DTS_DIR)/$(DEVICE_DTS).dtb ::$(DEVICE_DTS).dtb
  34         mmd -i $@.boot ::/overlays
  35         mcopy -i $@.boot $(DTS_DIR)/overlays/*.dtb ::/overlays/
  36         mcopy -i $@.boot $(DTS_DIR)/overlays/README ::/overlays/
  37 endef
  38
  39 define Build/sdcard-img
  40         ./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
  41                 $(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
  42         $(if $(CONFIG_TARGET_IMAGES_GZIP),gzip -9n -c $@ > $(BIN_DIR)/$(notdir $@).gz)
  43 endef
  44
  45 ### Device macros ###
  46 define Device/Default
  47   FILESYSTEMS := ext4
  48   PROFILES = Default $$(DEVICE_PROFILE)
  49   KERNEL := kernel-bin
  50   IMAGES := sdcard.img
  51   IMAGE/sdcard.img := gen-cfg | boot-img | sdcard-img
  52   DEVICE_PROFILE :=
  53   DEVICE_DTS :=
  54 endef
  55 DEVICE_VARS += DEVICE_PROFILE DEVICE_DTS
  56
  57 # $(1) = profile
  58 # $(2) = image name
  59 # $(3) = dts
  60 define bcm270x
  61   define Device/$(2)
  62     DEVICE_PROFILE := $(1)
  63     DEVICE_DTS := $(3)
  64   endef
  65   TARGET_DEVICES += $(2)
  66 endef
  67
  68 ### BCM2708/BCM2835 ###
  69 ifeq ($(SUBTARGET),bcm2708)
  70   # Raspberry Pi Model B
  71   $(eval $(call bcm270x,RaspberryPi_B,rpi-b,bcm2708-rpi-b))
  72   # Raspberry Pi Model B+
  73   $(eval $(call bcm270x,RaspberryPi_BPlus,rpi-b-plus,bcm2708-rpi-b-plus))
  74   # Raspberry Pi Compute Module
  75   $(eval $(call bcm270x,RaspberryPi_CM,rpi-cm,bcm2708-rpi-cm))
  76 endif
  77
  78 ### BCM2709/BCM2836 ###
  79 ifeq ($(SUBTARGET),bcm2709)
  80   # Raspberry Pi 2 Model B
  81   $(eval $(call bcm270x,RaspberryPi_2,rpi-2-b,bcm2709-rpi-2-b))
  82 endif
  83
  84 $(eval $(call BuildImage))