openwrtv3/target/linux/arc770/image/Makefile
Alexey Brodkin 30d75720fa arc770: Introduce images for SD-cards
Historically on ARC we started from initramfs-based images because:
 a) It was much easier to debug especially when toolchain and other
    components were changing quite dynamically
 b) It was our usual approach for embedded Linux

But now with ARC port of Lede/OpenWRT getting more stable and mature
we're ready for more real-life scenarios with FS permanently stored
on SD-card. This essentially benefits from ability to setup devices
that survive reboots with all settings and extra packages kept in place.

Still we keep an ability to build images with initramfs.
This allows us to use storage-less simulators for testing still.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: John Crispin <john@phrozen.org>
Cc: Jo-Philipp Wich <jo@mein.io>
2016-08-28 13:51:42 +02:00

86 lines
2.6 KiB
Makefile

#
# Copyright (C) 2016 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
# On ARC initramfs is put before entry point and so entry point moves
# in memory from build to built. Thus we need to extract EP from vmlinux
# every time before generation of uImage.
define Build/calculate-ep
$(eval KERNEL_ENTRY=$(shell $(KERNEL_CROSS)readelf -h $(1) | grep "Entry point address" | grep -o 0x.*))
endef
define Build/build-dtb
$(call Image/BuildDTB,$(DTS_DIR)/$(DEVICE_DTS).dts,$(DTS_DIR)/$(DEVICE_DTS).dtb)
endef
define Build/patch-dtb
$(STAGING_DIR_HOST)/bin/patch-dtb $@ $(DTS_DIR)/$(DEVICE_DTS).dtb
endef
ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),)
# Root FS built-in
define Device/vmlinux
KERNEL_SUFFIX := .elf
KERNEL := kernel-bin | build-dtb | patch-dtb
KERNEL_INITRAMFS_NAME = vmlinux-initramfs.elf
endef
define Device/nsim
$(call Device/vmlinux)
DEVICE_PROFILE := nsim
DEVICE_DTS := nsim_700
endef
TARGET_DEVICES += nsim
endif
# Root FS on SD-card
KERNEL_LOADADDR := 0x80000000
DEVICE_DTS_LIST:= axs101
FAT32_BLOCK_SIZE=1024
FAT32_BLOCKS=$(shell echo $$(($(CONFIG_AXS10X_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
define Image/Build/SDCard
rm -f $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img
mkdosfs $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img -C $(FAT32_BLOCKS)
mkimage -C none -A arc -T script -d uEnv.txt $(BIN_DIR)/uEnv.scr
mcopy -i $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img $(BIN_DIR)/uEnv.scr ::boot.scr
mcopy -i $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img $(DTS_DIR)/*.dtb ::
mcopy -i $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img $(BIN_DIR)/$(IMG_PREFIX)-uImage ::uImage
./gen_axs10x_sdcard_img.sh \
$(BIN_DIR)/$(IMG_PREFIX)-$(PROFILE)-sdcard-vfat-$(1).img \
$(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img \
$(KDIR)/root.$(1) \
$(CONFIG_AXS10X_SD_BOOT_PARTSIZE) \
$(CONFIG_TARGET_ROOTFS_PARTSIZE)
ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
gzip -f9n $(BIN_DIR)/$(IMG_PREFIX)-$(PROFILE)-sdcard-vfat-$(1).img
endif
endef
define Image/BuildKernel
# Build unified uImage
$(call Build/calculate-ep, $(KDIR)/vmlinux.elf)
$(call Image/BuildKernel/MkuImage, \
none, $(KERNEL_LOADADDR), $(KERNEL_ENTRY), \
$(KDIR)/vmlinux, \
$(BIN_DIR)/$(IMG_PREFIX)-uImage \
)
# Build .dtb for all boards we may run on
$(foreach DEVICE_DTS,$(shell echo $(DEVICE_DTS_LIST)), $(call Build/build-dtb))
endef
define Image/Build
$(call Image/Build/$(1),$(1))
$(call Image/Build/SDCard,$(1))
dd if=$(KDIR)/root.$(1) of=$(BIN_DIR)/$(IMG_PREFIX)-root.$(1) bs=128k conv=sync
endef
$(eval $(call BuildImage))