Pali, Am 02.06.2017 um 17:43 schrieb Pali Rohár: > This patch series extends block2mtd and ubi drivers to better handle > read-only devices and allow to load UBI image from local file which was > created for nand device. > > Tested for Nokia N900 with Maemo 5 rootfs ubifs image > (rootfs_RX-51_2009SE_21.2011.38-1_PR_MR0) which has erase size 128k, > write size 2k and nand subpage shift 2.
What is the use case behind this series? Did you see my nandsim rework some time ago? http://lists.infradead.org/pipermail/linux-mtd/2016-September/069422.html If you need a way to load files/nanddumps as NAND devices, this should be a good starting point. This reminds me that I need to revive that series. :-) > $ losetup -r /dev/loop0 rootfs_RX-51_2009SE_21.2011.38-1_PR_MR0.ubifs > $ echo -n /dev/loop0,131072,2048,2 > > /sys/module/block2mtd/parameters/block2mtd > $ ubiattach -p /dev/mtd0 > $ mount /dev/ubi0_0 /mnt/ubi -t ubifs > ... > $ umount /dev/ubi0_0 > $ ubidetach -p /dev/mtd0 > $ echo -n del=/dev/loop0 > /sys/module/block2mtd/parameters/block2mtd > $ losetup -d /dev/loop0 The module-parameter interface is odd. IMHO we should not extend it. Thanks, //richard
