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 $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
  13
  14 ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
  15   define Image/gzip
  16     gzip -9n -c $(1) > $(1).gz
  17     mv $(1).gz $(BIN_DIR)
  18   endef
  19 else
  20   define Image/gzip
  21   endef
  22 endif
  23
  24 define Image/Prepare
  25         rm -rf $(KDIR)/overlays
  26         mkdir -p $(KDIR)/overlays
  27         $(CP) $(DTS_DIR)/overlays/*.dtb $(KDIR)/overlays/
  28 endef
  29
  30 ### Image scripts ###
  31 define Build/gen-cfg
  32         cat config.txt > $@.config
  33         echo -e "\ndevice_tree=$(DEVICE_DTS).dtb" >> $@.config
  34 endef
  35
  36 define Build/boot-img
  37         rm -f $@.boot
  38         mkfs.fat -C $@.boot $(FAT32_BLOCKS)
  39         mcopy -i $@.boot $(KDIR)/bootcode.bin ::
  40         mcopy -i $@.boot $(KDIR)/COPYING.linux ::
  41         mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
  42         mcopy -i $@.boot $(KDIR)/start.elf ::
  43         mcopy -i $@.boot $(KDIR)/start_cd.elf ::
  44         mcopy -i $@.boot $(KDIR)/fixup.dat ::
  45         mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
  46         mcopy -i $@.boot cmdline.txt ::
  47         mcopy -i $@.boot $@.config ::config.txt
  48         mcopy -i $@.boot $(word 1,$^) ::kernel.img
  49         mcopy -i $@.boot $(DTS_DIR)/$(DEVICE_DTS).dtb ::$(DEVICE_DTS).dtb
  50         mcopy -s -i $@.boot $(KDIR)/overlays ::
  51 endef
  52
  53 define Build/sdcard-img
  54         ./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
  55                 $(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
  56         $(call Image/gzip,$@)
  57 endef
  58
  59 ### Device macros ###
  60 define Device/Default
  61   FILESYSTEMS := ext4
  62   PROFILES = Default $$(DEVICE_PROFILE)
  63   KERNEL := kernel-bin
  64   IMAGES := sdcard.bin
  65   IMAGE/sdcard.bin := gen-cfg | boot-img | sdcard-img
  66   DEVICE_PROFILE :=
  67   DEVICE_DTS :=
  68 endef
  69 DEVICE_VARS += DEVICE_PROFILE DEVICE_DTS
  70
  71 # $(1) = profile
  72 # $(2) = image name
  73 # $(3) = dts
  74 define add_bcm2708
  75   define Device/$(2)
  76     DEVICE_PROFILE := $(1)
  77     DEVICE_DTS := $(3)
  78   endef
  79   TARGET_DEVICES += $(2)
  80 endef
  81
  82 ### BCM2708/BCM2835 ###
  83 ifeq ($(SUBTARGET),bcm2708)
  84   # Raspberry Pi Model B
  85   $(eval $(call add_bcm2708,RaspberryPi_B,rpi-b,bcm2708-rpi-b))
  86   # Raspberry Pi Model B+
  87   $(eval $(call add_bcm2708,RaspberryPi_BPlus,rpi-b-plus,bcm2708-rpi-b-plus))
  88   # Raspberry Pi Compute Module
  89   $(eval $(call add_bcm2708,RaspberryPi_CM,rpi-cm,bcm2708-rpi-cm))
  90 endif
  91
  92 ### BCM2709/BCM2836 ###
  93 ifeq ($(SUBTARGET),bcm2709)
  94   # Raspberry Pi 2 Model B
  95   $(eval $(call add_bcm2708,RaspberryPi_2,rpi-2-b,bcm2709-rpi-2-b))
  96 endif
  97
  98 $(eval $(call BuildImage))