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fff02093e6
This patch adds a image with squashfs as the root filesystem.
A rootfs_data partition will be generated on the first boot
and placed inside the rootfs partition (just after the squashfs
image).
advantages:
- it is possible to migrate from an existing -ext4
installation and back via sysupgrade.
- existing partition layout will not be lost.
- slightly smaller image size.
- support for attendedsysupgrade
disadvantages:
- needs f2fs + tools as well. This is because fs-tools decides on the
blocksize of the sdcard. So either f2fs or ext4 can get choosen as
the rootfs_data filesystem (depends on the size of the root partition).
- rootfs_data is placed into the rootfs partition. This makes
it difficult for tools that expect a /dev/mmc0pX device.
It also makes it difficult for data recovery tools since they
might not expect to find a embedded partition or will be
confused.
For people with existing build configurations: make sure to include mkf2fs
and f2fsck package into the image... Otherwise the new -squashfs image will
boot of a ram-overlay and won't keep the configurations after a reboot.
Cc: Álvaro Fernández Rojas <noltari@gmail.com>
Cc: Paul Spooren <spooren@informatik.uni-leipzig.de>
Cc: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Acked-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 707b6c815b)
85 lines
2.7 KiB
Makefile
85 lines
2.7 KiB
Makefile
#
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# Copyright (C) 2012-2015 OpenWrt.org
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# Copyright (C) 2016-2017 LEDE project
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/image.mk
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FAT32_BLOCK_SIZE=1024
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FAT32_BLOCKS=$(shell echo $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
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define Build/Compile
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$(CP) $(LINUX_DIR)/COPYING $(KDIR)/COPYING.linux
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endef
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### Image scripts ###
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define Build/kernel-img
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perl $(LINUX_DIR)/scripts/mkknlimg $@ $@.tmp
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mv $@.tmp $@
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endef
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define Build/boot-img
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rm -f $@.boot
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mkfs.fat -C $@.boot $(FAT32_BLOCKS)
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mcopy -i $@.boot $(KDIR)/COPYING.linux ::
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mcopy -i $@.boot $(KDIR)/bootcode.bin ::
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mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
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mcopy -i $@.boot $(KDIR)/start.elf ::
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mcopy -i $@.boot $(KDIR)/start_cd.elf ::
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mcopy -i $@.boot $(KDIR)/fixup.dat ::
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mcopy -i $@.boot $(KDIR)/fixup_cd.dat ::
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mcopy -i $@.boot cmdline.txt ::
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mcopy -i $@.boot config.txt ::
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mcopy -i $@.boot $(IMAGE_KERNEL) ::$(KERNEL_IMG)
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$(foreach dts,$(shell echo $(DEVICE_DTS)),mcopy -i $@.boot $(DTS_DIR)/$(dts).dtb ::;)
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mmd -i $@.boot ::/overlays
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mcopy -i $@.boot $(DTS_DIR)/overlays/*.dtbo ::/overlays/
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mcopy -i $@.boot $(DTS_DIR)/overlays/README ::/overlays/
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endef
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define Build/sdcard-img
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./gen_rpi_sdcard_img.sh $@ $@.boot $(IMAGE_ROOTFS) \
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$(CONFIG_BRCM2708_SD_BOOT_PARTSIZE) $(CONFIG_TARGET_ROOTFS_PARTSIZE)
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endef
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### Devices ###
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define Device/Default
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KERNEL := kernel-bin | kernel-img
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KERNEL_IMG := kernel.img
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IMAGES := sdcard.img.gz
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IMAGE/sdcard.img.gz := boot-img | sdcard-img | gzip | append-metadata
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endef
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define Device/rpi
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DEVICE_TITLE := Raspberry Pi B/B+/CM/Zero/ZeroW
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DEVICE_DTS := bcm2708-rpi-b bcm2708-rpi-b-plus bcm2708-rpi-cm bcm2708-rpi-0-w
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SUPPORTED_DEVICES := rpi-b rpi-b-plus rpi-cm rpi-zero rpi-zero-w raspberrypi,model-b raspberrypi,model-b-plus raspberrypi,compute-module-1 raspberrypi,model-b-rev2 raspberrypi,model-zero raspberrypi,model-zero-w
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endef
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ifeq ($(SUBTARGET),bcm2708)
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TARGET_DEVICES += rpi
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endif
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define Device/rpi-2
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DEVICE_TITLE := Raspberry Pi 2B/3B/3B+/3CM
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DEVICE_DTS := bcm2709-rpi-2-b bcm2710-rpi-3-b bcm2710-rpi-3-b-plus bcm2710-rpi-cm3
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SUPPORTED_DEVICES := rpi-2-b rpi-3-b rpi-3-b-plus rpi-cm raspberrypi,2-model-b raspberrypi,3-model-b raspberrypi,3-model-b-plus raspberrypi,compute-module-3
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endef
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ifeq ($(SUBTARGET),bcm2709)
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TARGET_DEVICES += rpi-2
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endif
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define Device/rpi-3
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KERNEL_IMG := kernel8.img
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DEVICE_TITLE := Raspberry Pi 3B/3B+
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DEVICE_DTS := broadcom/bcm2710-rpi-3-b broadcom/bcm2710-rpi-3-b-plus
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SUPPORTED_DEVICES := rpi-3-b rpi-3-b-plus raspberrypi,3-model-b raspberrypi,3-model-b-plus
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endef
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ifeq ($(SUBTARGET),bcm2710)
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TARGET_DEVICES += rpi-3
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endif
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$(eval $(call BuildImage))
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