Commit f2bf06fd authored by Julien Boibessot's avatar Julien Boibessot Committed by Peter Korsgaard
Browse files

ubifs: Add UBI image generation support. 

UBI images are generated from UBIFS one (with ubinize tool) and are used by
bootloaders (eg U-Boot) to write UBIFS images directly on bare NAND FLASH
(see http://www.linux-mtd.infradead.org/faq/ubi.html

).

[Peter: tweak help text]
Signed-off-by: default avatarJulien Boibessot <julien.boibessot@armadeus.com>
Signed-off-by: default avatarNicolas Colombain <nicolas.colombain@armadeus.com>
Acked-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent 8497c46a

fs/ubifs/Config.in

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@@ -77,3 +77,24 @@ config BR2_TARGET_ROOTFS_UBIFS_LZMA 


endchoice



config BR2_TARGET_ROOTFS_UBI

	depends on BR2_TARGET_ROOTFS_UBIFS

	bool "Embed into an UBI image"

	help

	  Build an ubi image from the ubifs one (with ubinize).



config BR2_TARGET_ROOTFS_UBI_PEBSIZE

	hex "UBI physical erase block size"

	depends on BR2_TARGET_ROOTFS_UBI

	default 0x20000

	help

	  Tells ubinize the physical eraseblock size of the flash chip

	  the ubi image is created for.



config BR2_TARGET_ROOTFS_UBI_SUBSIZE

	int "UBI sub-page size"

	depends on BR2_TARGET_ROOTFS_UBI

	default 512

	help

	  Tells ubinize that the flash supports sub-pages and the sub-page

	  size. Use 0 if subpages are not supported on flash chip.

fs/ubifs/ubi.mk

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#############################################################

#

# Embed the ubifs image into an ubi one

#

#############################################################



UBI_UBINIZE_OPTS := -m $(BR2_TARGET_ROOTFS_UBIFS_MINIOSIZE)

UBI_UBINIZE_OPTS += -p $(BR2_TARGET_ROOTFS_UBI_PEBSIZE)

ifneq ($(BR2_TARGET_ROOTFS_UBI_SUBSIZE),0)

UBI_UBINIZE_OPTS += -s $(BR2_TARGET_ROOTFS_UBI_SUBSIZE)

endif



ROOTFS_UBI_DEPENDENCIES = rootfs-ubifs



define ROOTFS_UBI_CMD

	cp fs/ubifs/ubinize.cfg . ;\

	echo "image=$$@fs" \

		>> ./ubinize.cfg ;\

	$(HOST_DIR)/usr/sbin/ubinize -o $$@ $(UBI_UBINIZE_OPTS) ubinize.cfg ;\

	rm ubinize.cfg

endef



$(eval $(call ROOTFS_TARGET,ubi))

fs/ubifs/ubinize.cfg

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[ubifs]

mode=ubi

vol_id=0

vol_type=dynamic

vol_name=rootfs

vol_alignment=1

vol_flags=autoresize