On 12/22/2010 03:16 AM, Lluís Batlle i Rossell wrote: > On Tue, Dec 21, 2010 at 01:27:37AM +0000, Wolfgang Spraul wrote: >> Werner, >> >>> What surprises me is that the Debian-style bricking appears to kill >>> u-boot itself, which means that one then has to fiddle with the USB >> >> I vaguely remember there was a bug somewhere that would let usbboot >> 'wrap around' the 4096 nand pages sometimes, and then overwrite or >> erase nand page 0 containing u-boot. >> I think that bug is fixed now, but with a lot of stuff pointing here >> or there, and old versions, people may still occasionally run into >> it. > Still not, I think. Xiang Fu waited for me to test it, but I still have not > found how to back up an ubifs. > The fix made a lot of sense to me, but xiang fu did not commit it still. > Hi
the 'nerase' bug is. it always try to erase good block. for example. - we want erase 8 blocks at 0.(which is bootloader partition) - there is one bad block at [3]. - then 'nerase' will erase 0 1 2 4 5 6 7 8 9 <-- (which 9 is not what we want) this commit[1] fix that. BTW: in the hardware side if we pass not correct address cpu. seems it will start from the '0', I have test those command: nerase 4095 2 0 0 : erase block [4095] and [0] nerase 4095 3 0 0 : erase block [4095], [0], [1] so if we have bad block in [16 ~ 4095] and we use "nerase 16 4080 0 0 " it's will erase the bootloader, which make nanonote not boot. I have upload a new version of xburst-tools to[2], xburst-tools_201012-1_amd64.deb please test it. if all goes ok. we will upload a source tar ball. and upload a new version to Debian. thanks Lluis for report that. ------- for backup an ubifs one idea is 1. boot from sd card 2. mount rootfs to /tmp/root 3. mkfs.ubifs base on the /tmp/root. (don't know how much time it need in nanonote :) [1] http://projects.qi-hardware.com/index.php/p/xburst-tools/source/commit/0e92eb8/ [2] http://projects.qi-hardware.com/index.php/p/xburst-tools/downloads/61/ > Regards, > Lluís. > > _______________________________________________ > Qi Hardware Discussion List > Mail to list (members only): [email protected] > Subscribe or Unsubscribe: > http://lists.en.qi-hardware.com/mailman/listinfo/discussion -- Best Regards Xiangfu -- Qi RSS feed, http://en.qi-hardware.com/feed/rss20.xml -- _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
