[maemo-developers] Failing to connect with flasher
From: Frantisek Dufka dufkaf at seznam.czDate: Wed Apr 11 10:17:28 EEST 2007
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pancake wrote: > BTW If you are able to boot Maemo but you're not able to connect to NOLO > you should probably think on reflashing nolo from the device (using > mtdtools). Did you try? Maybe this is not a good idea. I'm not sure bootloader (mtd0) partition is safe to write with mtdutils. So far in every n770 kernel log I've seen on the net is something like this [93032.218597] omap-hw-nand: OMAP NAND Controller rev. 1.1 [93032.218780] NAND device: Manufacturer ID: 0xec, Chip ID: 0xa1 (Samsung NAND 128MiB 1,8V 8-bit) [93032.218994] omap-hw-nand: using PSC values 2, 2, 3 [93032.219116] Scanning device for bad blocks [93032.219238] Bad eraseblock 0 at 0x00000000 [93032.253875] 5 cmdlinepart partitions found on MTD device omap-nand [93032.253997] Creating 5 MTD partitions on "omap-nand": [93032.254119] 0x00000000-0x00020000 : "bootloader" What makes me nervous is the "Bad eraseblock 0 at 0x00000000" line. This may mean there is really a bad block but most likely it means the oob data has different format than with normal block so writing it with mtdutils would in theory repair/destroy the oob data. Also in reality it means this block cannot be written from linux kernel at all since it cannot write to bad blocks -> mtd utils will not write to first block. This may be good and may be not. Also when I tried nanddump on /dev/mtd0 I got file with all FF and no errors. Maybe first bad block confuses it (-b does not help) maybe there is other problem (dd if=/dev/mtdblock0 works fine however). This means I wouldn't trust nandwrite for writing correct data too. Frantisek
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