Hi All, how to unpack a yaffs2 image file created with mkyaffs2image-128M. I tried unyaffs from http://code.google.com/p/unyaffs/downloads/list but it does not work. The image file is a valid file and is working ... regards --fatbrain
Maybe it's possible to mount it? I'm not sure though, I think you've got to look into it yourself.. I know for sure it's possible to mount an ext2 image file, since I did that yesterday. Good luck!
Hello, Still not clear how to unpack a yaffs2 image file created with mkyaffs2image-128M not only mkyaffs2image-128M but also mkyaffs2image-mlc2 too... I have MLC2 NAND Samsung K9GAG08U0F I have study a lot of manuals such as following http://tjworld.net/wiki/Linux/Kernel/SimulateNandMtdDevice#SimulateNANDM... but result still negative. I was not able to mount correctly images from FriendlyARM FTP Please somebody can explain me what is wrong here? #!/bin/sh git clone git://www.aleph1.co.uk/yaffs2 cd /yaffs2 ln -s yportenv_multi.h yportenv.h # ln: creating symbolic link `yportenv.h': File exists #above line not work because #yportenv.h already present in work folder #ignore this.... make #make -C /lib/modules/2.6.32-27-generic/build M=/yaffs2 modules #make[1]: Entering directory `/usr/src/linux-headers-2.6.32-27-generic' # CC [M] /yaffs2/yaffs_mtdif_multi.o # CC [M] /yaffs2/yaffs_packedtags1.o # CC [M] /yaffs2/yaffs_ecc.o # CC [M] /yaffs2/yaffs_vfs_multi.o # CC [M] /yaffs2/yaffs_guts.o # CC [M] /yaffs2/yaffs_packedtags2.o # CC [M] /yaffs2/yaffs_tagscompat.o # CC [M] /yaffs2/yaffs_tagsmarshall.o # CC [M] /yaffs2/yaffs_checkptrw.o # CC [M] /yaffs2/yaffs_nand.o # CC [M] /yaffs2/yaffs_nameval.o # CC [M] /yaffs2/yaffs_allocator.o # CC [M] /yaffs2/yaffs_bitmap.o # CC [M] /yaffs2/yaffs_attribs.o # CC [M] /yaffs2/yaffs_yaffs1.o # CC [M] /yaffs2/yaffs_yaffs2.o # CC [M] /yaffs2/yaffs_verify.o # CC [M] /yaffs2/yaffs_summary.o # LD [M] /yaffs2/yaffs2multi.o # Building modules, stage 2. # MODPOST 1 modules # CC /yaffs2/yaffs2multi.mod.o # LD [M] /yaffs2/yaffs2multi.ko #make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-27-generic' make mi #make -C /lib/modules/2.6.32-27-generic/build M=/yaffs2 modules_install #make[1]: Entering directory `/usr/src/linux-headers-2.6.32-27-generic' # INSTALL /yaffs2/yaffs2multi.ko # DEPMOD 2.6.32-27-generic #make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-27-generic' modinfo yaffs2multi #ERROR: modinfo: could not find module yaffs2multi #above line does not work #I need use modinfo /yaffs2/yaffs2multi.ko (not the same as was in manual) modinfo /yaffs2/yaffs2multi.ko #filename: /yaffs2/yaffs2multi.ko #license: GPL #author: Charles Manning, Aleph One Ltd., 2002-2011 #description: YAFFS2 - a NAND specific flash file system #srcversion: ABF238376DBCD4A5DAA00FB #depends: mtd #vermagic: 2.6.32-27-generic SMP mod_unload modversions 586 #parm: yaffs_trace_mask:uint #parm: yaffs_wr_attempts:uint #parm: yaffs_auto_checkpoint:uint #parm: yaffs_gc_control:uint #parm: yaffs_bg_enable:uint modprobe nandsim first_id_byte=0x20 second_id_byte=0x71 cache_file=/tmp/nandsim.bin modprobe yaffs2multi #FATAL: Module yaffs2multi not found. #above line not work modprobe /yaffs2/yaffs2multi.ko FATAL: Module /yaffs2/yaffs2multi.ko not found. ls /yaffs2/yaffs2multi.ko #/yaffs2/yaffs2multi.ko # we can see that module on place # Does modprone seek module by something other path? (maybe) # May be instalation was incomplete... #I was able to load module only with insmod /yaffs2/yaffs2multi.ko #At this point all modules are loaded. Continue #let's try mount with loop system mkdir -p mnt/tmp mount -t yaffs2 -o loop /tmp/rootfs_android-mlc2.img /mnt/tmp #Mount process sucessfully completed.... #but in /mnt/tmp I saw only lost+found folder and nothing more. df #Filesystem 1K-blocks Used Available Use% Mounted on #... #/dev/loop0 262144 96 262048 1% /mnt/tmp mount #... #/dev/loop0 on /mnt/tmp type yaffs2 (rw) # but /mnt/tmp at some reason read only... #this line definitely not normal work.... #Continue our researches umount /mnt/tmp cat /proc/mtd #dev: size erasesize name #mtd0: 10000000 00004000 "NAND simulator partition 0" dd if=/tmp/rootfs_android-mlc2.img of=/dev/mtdblock0 #390015+1 records in #390015+1 records out #199687872 bytes (200 MB) copied, 19,3608 s, 10,3 MB/s mount -t yaffs2 /dev/mtdblock0 /mnt/tmp ls -l /mnt/tmp #total 1 #drwx------ 1 root root 512 2013-04-14 03:31 lost+found #we got the same result... mount #dev/mtdblock0 on /mnt/tmp type yaffs2 (rw) #but /mnt/tmp read only So the question is still actual!!! How we can operate with rootfs-XXX.img files? What is geometry parameters which are used in mktools mkext3image mkubimage-mlc1 mkubimage-mlc2 mkubimage-slc mkyaffs2image mkyaffs2image-128M mkyaffs2image-mlc2 how to adjust mtd to achieve compatibility of created wit this utilities images... May be this was already described in some FAQ or Manual??? Need support.
you need a program called unyaffs2, there are a few versions around: https://code.google.com/p/yaffs2utils/