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 $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
  13
  14 ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
  15   define Image/gzip
  16     gzip -9n -c $(1) > $(1).gz
  17     mv $(1).gz $(BIN_DIR)
  18   endef
  19 else
  20   define Image/gzip
  21   endef
  22 endif
  23
  24 ### Image scripts ###
  25 define Build/build-dtb
  26         $(LINUX_DIR)/scripts/dtc/dtc -O dtb -o $@.dtb $(DTS_DIR)/$(DEVICE_DTS).dts
  27 endef
  28
  29 define Build/gen-cfg
  30         cat config.txt > $@.config
  31         echo -e "\ndevice_tree=$(DEVICE_DTS).dtb" >> $@.config
  32 endef
  33
  34 define Build/boot-img
  35         rm -f $@.boot
  36         mkfs.fat -C $@.boot $(FAT32_BLOCKS)
  37         mcopy -i $@.boot $(KDIR)/bootcode.bin ::
  38         mcopy -i $@.boot $(KDIR)/COPYING.linux ::
  39         mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
  40         mcopy -i $@.boot $(KDIR)/start.elf ::
  41         mcopy -i $@.boot $(KDIR)/start_cd.elf ::
  42         mcopy -i $@.boot $(KDIR)/fixup.dat ::
  43         mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
  44         mcopy -i $@.boot cmdline.txt ::
  45         mcopy -i $@.boot $@.config ::config.txt
  46         mcopy -i $@.boot $(word 1,$^) ::kernel.img
  47         mcopy -i $@.boot $@.dtb ::$(DEVICE_DTS).dtb
  48 endef
  49
  50 define Build/sdcard-img
  51         ./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
  52                 $(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
  53         $(call Image/gzip,$@)
  54 endef
  55
  56 ### Device macros ###
  57 define Device/Default
  58   FILESYSTEMS := ext4
  59   PROFILES = Default $$(DEVICE_PROFILE)
  60   KERNEL := kernel-bin
  61   IMAGES := sdcard.bin
  62   IMAGE/sdcard.bin := build-dtb | gen-cfg | boot-img | sdcard-img
  63   DEVICE_PROFILE :=
  64   DEVICE_DTS :=
  65 endef
  66 DEVICE_VARS += DEVICE_PROFILE DEVICE_DTS
  67
  68 # $(1) = profile
  69 # $(2) = image name
  70 # $(3) = dts
  71 define add_bcm2708
  72   define Device/$(2)
  73     DEVICE_PROFILE := $(1)
  74     DEVICE_DTS := $(3)
  75   endef
  76   TARGET_DEVICES += $(2)
  77 endef
  78
  79 ### BCM2708/BCM2835 ###
  80 ifeq ($(SUBTARGET),bcm2708)
  81   # Raspberry Pi Model B
  82   $(eval $(call add_bcm2708,RaspberryPi_B,rpi-b,bcm2708-rpi-b))
  83   # Raspberry Pi Model B+
  84   $(eval $(call add_bcm2708,RaspberryPi_BPlus,rpi-b-plus,bcm2708-rpi-b-plus))
  85   # Raspberry Pi Compute Module
  86   $(eval $(call add_bcm2708,RaspberryPi_CM,rpi-cm,bcm2708-rpi-cm))
  87 endif
  88
  89 ### BCM2709/BCM2836 ###
  90 ifeq ($(SUBTARGET),bcm2709)
  91   # Raspberry Pi 2 Model B
  92   $(eval $(call add_bcm2708,RaspberryPi_2,rpi-2-b,bcm2709-rpi-2-b))
  93 endif
  94
  95 $(eval $(call BuildImage))