Hi,
On the trendtac the /dev/mtd3 can be automatic overwritten during startup (minifs.img on SD card +left fn , left shift + right shift. this will give blank screen and copies minifs to /dev/mtd3) The old minifs.img works correctly for kernel 2.4.20. Manual steps for /dev/mtd3 recovery. [only 5MB size, even less when having bad blocks] When it is mounted as yaffs you get 100% use, and it corrupts jffs2 data.. If that happened. erase it with ./flash_eraseall /dev/mtd3 Afterwards you can mount -t jffs2 /dev/mtdblock3 /mnt/mtd3 This will give you the possibility to write your own files to /mnt/mtd3. There could be the problem that because of bad blocks there is not enough size to write minifs, then dd will not work. (I have only 1664 bytes available ;-( ) To get it working then I should reduce the minifs.img to < 1.6MB. For kernel 2.6.24.3 need some additional fixes. - need update minifs.img file to work on new kernel (add the correct /dev/ parts from our new kernel, change startup /etc/init.d/modules) - Update kernel startup key's to be changed to boot /dev/mtd3 as jffs2 when pressing F3. (instead of yaffs, this will corrupt jffs2) - Additional we could use the second nand /dev/mtd5 as recovery and boot it with F5. Grt Ruben. To: h...@goldelico.com; wolfg...@peerworld.at Date: Wed, 25 Aug 2010 15:49:48 +0000 From: wolfg...@peerworld.at CC: mipsbook-devel@linuxtogo.org Subject: Re: [Mipsbook-devel] Recovery image/procedure for the Letux 400 Hi Nikolaus , i tried the steps again, using my SD which cotains uImage and minifs.img. But still no F3 Recovery menu :-( do you think, using 'dd' to copy the minifs.img to /dev/mtd3 from my SD - debian (lenny) ? I mounted the /dev/mtdblock3 and checked the content. But ls -la shows only lost+found and "df -k" show 100% usage . But maybe this device is not readable using normal mount (who knows) Thank you ... Wolfgang -----Ursprüngliche Nachricht----- Von: "Dr. H. Nikolaus Schaller" <h...@goldelico.com> Gesendet 25.08.2010 16:44:04 An: "Wolfgang Peer" <wolfg...@peerworld.at> CC: mipsbook-devel@linuxtogo.org Betreff: Re: [Mipsbook-devel] Recovery image/procedure for the Letux 400 Am 25.08.2010 um 09:22 schrieb Wolfgang Peer: Hi Nikolaus, first of all, thank you for the great work trying to solve this issue . But sorry to ask you again for some support in recovering the letux400. Somehow it seems that i am not able to recover the minifs. One question is: how do i know that flashing the minifs.img was successfull? Unfortunately there appears to be no feedback. It could be on the RS232 console, but the Letux 400 does not even have the connector. It looks like flashing the kernel was successful -> i am getting now the V66 kernel picture when powering on . But sadly 'F3' still does not work. Did i miss something? Here are the steps i did : - copy the uImage to an VFAT SD card - power on the letux with fn-lsh-lctrl - after a view seconds i a get the new kernel picture on the screen (displays V66) - power off - copy minifs.img on the SD (prev. i removed the uImage file - so only minifs.img is on the SD) - press fn-lsh-rsh and power on - again after some seconds the kernel start picture appears -> i then pressed F3 but nothing happened - power off - pressed (hold) F3 and powered on -> kernel picture appears but even after waiting a while no recovery menu comes up :-S The procedure looks ok. One thing *may* be different from my approach - deleting the uImage. I can imagine that Fn+LSh+Rsh may also search for a kernel - who knows... Did i missed something? One note, the F3 could need approx. 30 seconds to show an effect. Thank you very much! ... Wolfgang -----Ursprüngliche Nachricht----- Von: "Dr. H. Nikolaus Schaller" <h...@goldelico.com> Gesendet 24.08.2010 18:25:28 An: "Pier" <p...@unirc.eu>, "Wolfgang Peer" <wolfg...@peerworld.at> CC: mipsbook-devel@linuxtogo.org Betreff: Re: [Mipsbook-devel] Recovery image/procedure for the Letux 400 Finally, I have got all the required files and procedures to restore the Letux 400 to the factory settings: * Kernel 2.4 v66 (showing the Enjoy! message) * Minifs 1.20 * normal recovery file All files and a short README are available here: http://download.goldelico.com/letux-400-jtag/ It worked on two machines for me - the third one appears to have a broken U-Boot and needs the JTAG treatment... Please let me know if it works for you. Nikolaus _______________________________________________ Mipsbook-devel mailing list Mipsbook-devel@linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/mipsbook-devel _______________________________________________ Mipsbook-devel mailing list Mipsbook-devel@linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/mipsbook-devel
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