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Ecc Error Unfixed On Chunk

Yes, my password is: Forgot your password? Re: [Yaffs] ecc error unfixed on chunkCatalàDanskDeutschΕλληνικάEnglishEspañolsuomiFrançaisGalegomagyarItaliano日本語NederlandsPolskiPortuguêsPortuguês BrasileiroThis message is part of the following thread:the complete thread tree sorted by [email protected] at 2005-10-28 20:40 Attachments:Message as email (text/plain)Author: Charles ManningDate: 2005-11-01 20:43 UTCTo: yaffsCC: yuri.golovachSubject: Re: [Yaffs] ecc error ie something along the lines of: sniff mtd if mtd page size == 512 then yaffs1 handling else yaffs2 handling That should be pretty straight forward to do and would save PATCH!!! (Was Sorry state of YAFFS2)Stoneboat Mailing List Archive adminisztrátora: JennyLurker (verzió: 2.3) Log in or Sign up Official Pyra and Pandora Site Home Forums > Other Consoles > GPH Consoles this content

In these ROM-like applications where the write/erase cycles is very low, the actual failure rate for a block is about 3 ppm after 10 years (i.e. 3 blocks out of every mkyaffs to erase the partition, copy a file to it and read it back. PATCH!!! (Was Sorry state of YAFFS2)Re: [Yaffs] PATCH!!! In addition, due to the number of > overhead blocks, our first small boot partition is dynamically sized to > make sure there is enough free space for a kernel. >

When I type dmesg, I see a lot of this: **>>ecc error unfixed on chunk 1089:0 **>>ecc error unfixed on chunk 1089:1 **>>Block 34 marked for retirement **>>ecc error unfixed on This appears to still be in place in the latest release... i boot my board using jffs2 filesystem as root filesystem > > # cat /proc/mtd > > dev: size erasesize name > > mtd0: 03c00000 00020000 "User11 FS" > > mtd1:

Allocator out !!!!!!!!!!!!!!!!! > > ......................................... > > then i try to exc command "df" > > /mnt # df > > Filesystem 1k-blocks Used Available Use% Mounted on > > Only one of them should do the checking. A NAND-flash specific file system. * yaffs_tagscompat.h: Tags compatability layer to use YAFFS1 formatted NAND. * * Copyright (C) 2002 Aleph One Ltd. * * Created by Charles Manning * Keeping -CE > asserted during the whole sector reads interferes with the NOR flash > drivers > so it causes contention on the static bus. > Can you give me any

If you can, then diff the old and new mtd to check what changes might be impacting on the problem. -- Charles This message was posted to the following mailing lists:YAFFSMailing now i plan to mount nand flash under jffs2 > > filesystem . Visit the Trac open source project athttp://trac.edgewall.com/ https://pyra-handheld.com/boards/threads/ecc-errors-in-dmesg.27776/ Download Now android_kernel_asus_tf300t /fs/yaffs2/yaffs_tagscompat.c Language C Lines 423 MD5 Hash 79df4156c522bdafba6e92f236adbe04 Estimated Cost $7,632 (why?) Repository https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t.git View Raw File Find Similar Files View File Tree 1 2 3 4 5

The problem is almost certainly due to a disagreement between yaffs and mtd over who is doing the ECC checking. If I configure YAFFS to use its own ECC calculations it seems to work fine, but if I try to use MTD ECC calculations ( #undef CONFIG_YAFFS_DOES_ECC ) a lot of On Saturday 29 October 2005 09:40, [email protected] wrote: > Good day dear All. > > I've installed latest yaffs and latest mtd from CVS and receive some (not > some, a Given that /dev/mtdblock/2 is in active use by the system, what's the expected MTTF for the onboard flash?

Did you get this with a fresh partition or only after you had loaded data? http://forums.roku.com/viewtopic.php?t=320 It does not look like you are. Only one of them should do the checking. YAFFS doesn't appear to be in the GPL kernel dist, and I don't really trust the defconfig, so I hesitate to base any assumptions on that source...

Derek Top RokuGreg Roku Engineering Posts: 110 Joined: Wed Sep 01, 2004 8:22 am Location: Arkansas Contact: Contact RokuGreg Website Re: bad blocks Quote #5 Tue Oct 19, 2004 1:44 Quality Add-Ons by WMTech © 2016 WebMachine Technologies, Inc. These errors I've received just at the mount procedure, or when I'm trying to do, for example, ls. Nick There are probably quite a few people with the requirement of one firmware supporting both 512 and 2k NAND board variants.

Derek Top dtaubert Topic Author Posts: 97 Joined: Wed Sep 15, 2004 3:06 pm Quote #4 Tue Oct 19, 2004 12:56 pm These errors are coming from YAFFS (output below Does the upgrade procedure use YAFFS to re-write the device, or does it somehow bypass YAFFS (and the normal bad block marking)? No, create an account now. However the message text does not match the latest.

A NAND-flash specific file system. * * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning * * This Greg Garner Director of Hardware Engineering Roku Top dtaubert Topic Author Posts: 97 Joined: Wed Sep 15, 2004 3:06 pm Quote #6 Tue Oct 19, 2004 2:16 pm Thanks for Fiddling with the CE might be the cause of your problems.

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Anyclues what > > could be wrong .. > > Any help will be highly appreciated. > > > > > > regards > > > > please help me out It's not a problem for me at the moment, but I suspect it will be in the near future. Squidge, Jun 13, 2006 #2 stragulus Still Fresh Joined: May 19, 2006 Messages: 3 Squidge posted on Jun 13 2006 said: ↑ Yes, that's normal. Nick There are probably quite a few people with the requirement of one firmware supporting both 512 and 2k NAND board variants.

Is there any way to scrub them before they become uncorrectable double bit errors? Style DragonBox Pyra Contact Us Help Newsletter Subscribe Home Top RSS Terms and Rules Forum software by XenForo™ ©2010-2016 XenForo Ltd. For systems > with mixed nand builds (we have 32MB boards using 512b to 384MB using 3 > 1GBit 2k) a single kernel is often desireable for production. PATCH!!! (Was Sorry state of YAFFS2)[Yaffs] yaffs1/2 autodetect ideaStoneboat Mailing List Archive administrated by JennyLurker (version 2.3) [Yaffs] ecc error unfixed on chunkCatalàDanskDeutschΕλληνικάEnglishEspañolsuomiFrançaisGalegomagyarItaliano日本語NederlandsPolskiPortuguêsPortuguês BrasileiroEz az üzenet a következő szál része:a teljes

Pyra Wiki The Pandora The Pandora Quick Links Firmware Images GIT Repository App Repository PandoraWiki Forums Forums Quick Links Search Forums Recent Posts Contact Us / Support Contact Us / Support Retire? */ unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; ecc--; b[ecc / 8] ^= (1 << (ecc & 7)); /* Now recvalc the ecc */ yaffs_CalcTagsECC(tags); return 1; /* recovered error Thank you.Ezt az üzenetet a következő levelezőlistákra küldték el:YAFFSLevelezőlista információk | Közeli üzenetekRe: [Yaffs] PATCH!!! After > > make, I got the error messages > > at the end: > > > > all of transport is passed > > > > 1.

OK the first thing is to ensure you are using the latest yaffs source. NAND has errors when bought new from the factory, you just don't know where there are until you try and write to them, and others appear over time. Check out the latest downloadable searchcode server release published under fair source. Retire? */ unsigned char *b = ((union yaffs_tags_union *)tags)->as_bytes; ecc--; b[ecc / 8] ^= (1 << (ecc & 7)); /* Now recvalc the ecc */ yaffs_calc_tags_ecc(tags); return 1; /* recovered error

I select yafss and mtd support from muneconfig. In our > version of bootldr (see > http://husaberg.toby-churchill.com/balloon/releases/development/bootldr/boo >tldr36) 2k/512 byte pages size for the root mtd device is detected and > rootfs=yaffs/yaffs2 is selected. Then, make sure yo select the correct options to choose whether yaffs or mtd will do the ECC. The ecc is capable of detecting multi-bit errors but can only correct single-bit errors. > > for a lot of chunks.

n_bytes_msb) << 10); ext_tags->serial_number = tags.serial_number; } } return YAFFS_OK; } else { return YAFFS_FAIL; } } int yaffs_tags_compat_mark_bad(struct yaffs_dev *dev, int flash_block) { struct yaffs_spare spare; memset(&spare, 0xff, sizeof(struct yaffs_spare)); In our > version of bootldr (see > http://husaberg.toby-churchill.com/balloon/releases/development/bootldr/boo >tldr36) 2k/512 byte pages size for the root mtd device is detected and > rootfs=yaffs/yaffs2 is selected. Dismiss Notice Cookies Pyra Preorder Ecc Errors In Dmesg Discussion in 'I need help' started by stragulus, Jun 13, 2006. Top dtaubert Topic Author Posts: 97 Joined: Wed Sep 15, 2004 3:06 pm Quote #3 Tue Oct 19, 2004 12:30 pm Is the onboard flash NAND or NOR based?

A NAND-flash specific file system.3 *4 * Copyright (C) 2002-2007 Aleph One Ltd.5 *   for Toby Churchill Ltd and Brightstar Engineering6 *7 * Created by Charles Manning 8 *9 * This program is free software; you can redistribute Since there will be a non-zero data retention failure rate, you should limit the amount of code to 1 block to achieve a low ppm probability of failure." Based on this OSDir.com linux.file-systems.yaffs Subject: Re: ecc error unfixed on chunk Date Index Thread: Next Thread Index Hi Yuri You don't give much detail to work with, but I'll try. I wrote my own driver to interface the nand flash in MTD.

GBiz is too! Latest News Stories: Docker 1.0Heartbleed Redux: Another Gaping Wound in Web Encryption UncoveredThe Next Circle of Hell: Unpatchable SystemsGit 2.0.0 ReleasedThe Linux Foundation Announces Core Infrastructure nz [Download message RAW] On Friday 19 January 2007 16:03, howhowwork wrote: > Hi > Thank you for your help ! > I did the test using nandflash as root filesystem The messages are saying that a chunk was read, and ecc errors were found. gen !