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#
# Copyright (C) 2012-2015 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
include $(INCLUDE_DIR)/host.mk
FAT32_BLOCK_SIZE=1024
FAT32_BLOCKS=$(shell echo $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
define Image/gzip
gzip -9n -c $(1) > $(1).gz
mv $(1).gz $(BIN_DIR)
endef
else
define Image/gzip
endef
endif
### Image scripts ###
define Build/build-dtb
$(LINUX_DIR)/scripts/dtc/dtc -O dtb -o $@.dtb $(DTS_DIR)/$(DEVICE_DTS).dts
endef
define Build/gen-cfg
cat config.txt > $@.config
echo -e "\ndevice_tree=$(DEVICE_DTS).dtb" >> $@.config
endef
define Build/boot-img
rm -f $@.boot
mkfs.fat -C $@.boot $(FAT32_BLOCKS)
mcopy -i $@.boot $(KDIR)/bootcode.bin ::
mcopy -i $@.boot $(KDIR)/COPYING.linux ::
mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
mcopy -i $@.boot $(KDIR)/start.elf ::
mcopy -i $@.boot $(KDIR)/start_cd.elf ::
mcopy -i $@.boot $(KDIR)/fixup.dat ::
mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
mcopy -i $@.boot cmdline.txt ::
mcopy -i $@.boot $@.config ::config.txt
mcopy -i $@.boot $(word 1,$^) ::kernel.img
mcopy -i $@.boot $@.dtb ::$(DEVICE_DTS).dtb
endef
define Build/sdcard-img
./gen_rpi_sdcard_img.sh $@ $@.boot $(word 2,$^) \
$(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
$(call Image/gzip,$@)
endef
### Device macros ###
define Device/Default
FILESYSTEMS := ext4
PROFILES = Default $$(DEVICE_PROFILE)
KERNEL := kernel-bin
IMAGES := sdcard.bin
IMAGE/sdcard.bin := build-dtb | gen-cfg | boot-img | sdcard-img
DEVICE_PROFILE :=
DEVICE_DTS :=
endef
DEVICE_VARS += DEVICE_PROFILE DEVICE_DTS
# $(1) = profile
# $(2) = image name
# $(3) = dts
define add_bcm2708
define Device/$(2)
DEVICE_PROFILE := $(1)
DEVICE_DTS := $(3)
endef
TARGET_DEVICES += $(2)
endef
### BCM2708/BCM2835 ###
ifeq ($(SUBTARGET),bcm2708)
# Raspberry Pi Model B
$(eval $(call add_bcm2708,RaspberryPi_B,rpi-b,bcm2708-rpi-b))
# Raspberry Pi Model B+
$(eval $(call add_bcm2708,RaspberryPi_BPlus,rpi-b-plus,bcm2708-rpi-b-plus))
# Raspberry Pi Compute Module
$(eval $(call add_bcm2708,RaspberryPi_CM,rpi-cm,bcm2708-rpi-cm))
endif
### BCM2709/BCM2836 ###
ifeq ($(SUBTARGET),bcm2709)
# Raspberry Pi 2 Model B
$(eval $(call add_bcm2708,RaspberryPi_2,rpi-2-b,bcm2709-rpi-2-b))
endif
$(eval $(call BuildImage))
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