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2019-10-16ubi: Add "skipcheck" command to set/clear this bit in the UBI volume hdrStefan Roese
U-Boot now supports the "skip_check" flag to optionally skip the CRC check at open time. Currently its only possible to set this bit upon UBI volume creation. But it might be very useful to also set this bit on already installed systems (e.g. field upgrade) to make also use of the boot-time decrease on those systems. This patch now adds a new "ubi" command "ubi skipcheck" to set or clear this bit in the UBI volume header: => ubi skipcheck rootfs0 on Setting skip_check on volume rootfs0 BTW: This saves approx. 10 seconds Linux bootup time on a MT7688 based target with 128MiB of SPI NAND. Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Heiko Schocher <hs@denx.de> Cc: Quentin Schulz <quentin.schulz@bootlin.com> Cc: Boris Brezillon <boris.brezillon@collabora.com> Cc: Heiko Schocher <hs@denx.de> Cc: Andreas Dannenberg <dannenberg@ti.com>
2013-10-14Coding Style cleanup: replace leading SPACEs by TABsWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Drop changes for PEP 4 following python tools] Signed-off-by: Tom Rini <trini@ti.com>
2013-10-09cmd_ubi: add write.part command, to write a volume in multiple partsPaul Burton
This allows you to write data to an UBI volume when the amount of memory available to write that data from is less than the total size of the data. For example, you may split a root filesystem UBIFS image into parts, provide the total size of the image to the first write.part command and then use multiple write.part commands to write the subsequent parts of the volume. This results in a sequence of commands akin to: ext4load mmc 0:1 0x80000000 rootfs.ubifs.0 ubi write.part 0x80000000 root 0x08000000 0x18000000 ext4load mmc 0:1 0x80000000 rootfs.ubifs.1 ubi write.part 0x80000000 root 0x08000000 ext4load mmc 0:1 0x80000000 rootfs.ubifs.2 ubi write.part 0x80000000 root 0x08000000 This would write 384MiB of data to the UBI volume 'root' whilst only requiring 128MiB of said data to be held in memory at a time. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Stefan Roese <sr@denx.de>
2013-05-15doc/README.ubi: Add description of accessing ubi filesystemsPaul B. Henson
Signed-off-by: "Paul B. Henson" <henson@acm.org>
2010-10-19Add UBI READMEStefan Roese
This patch adds a small README to describe the usage of the U-Boot UBI commands. Signed-off-by: Stefan Roese <sr@denx.de>