maemo.org - Talk - View Single Post - Editing n900's rootfs.jffs2

pali	2013-02-25 , 13:40
Posts: 2,153 \| Thanked: 8,462 times \| Joined on May 2010	#13

So correct way how to mount N900 rootfs on computer using nandsim is:
(this will use ubiformat instead mtdblock and dd as in #3rd post)

1. Load nandsim module (which emulate nand mtd device) with same layout as has N900:

Code:

$ modprobe nandsim first_id_byte=0x20 second_id_byte=0xaa third_id_byte=0x00 fourth_id_byte=0x15 parts=1,3,2,16,16,2010

2. Load ubi and ubifs modules:

Code:

$ modprobe ubi
$ modprobe ubifs

3. Flash rootfs ubi image to emulated nand mtd device:

Code:

$ ubiformat /dev/mtd5 -s 512 -O 512 -f <rootfs_image>

4. Attach mtd device to ubi:

Code:

$ ubiattach /dev/ubi_ctrl -p /dev/mtd5

5. Mount rootfs volume (ubifs image) from ubi to /mnt/n900:

Code:

$ mkdir -p /mnt/n900
$ mount ubi:rootfs /mnt/n900 -t ubifs

And then rootfs image should be mounted to /mnt/n900

Umounting & cleaning:

Code:

$ umount /mnt/n900
$ ubidetach /dev/ubi_ctrl -d 0
$ rmmod ubifs
$ rmmod ubi
$ rmmod nandsim

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