From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from majordomo by infradead.org with local (Exim 3.16 #2) id 1434Ep-0005fu-00 for mtd-list@infradead.org; Mon, 04 Dec 2000 22:37:35 +0000 Received: from [203.46.70.199] (helo=singularity.tronunltd.com) by infradead.org with esmtp (Exim 3.16 #2) id 1434EU-0005fj-00 for mtd@infradead.org; Mon, 04 Dec 2000 22:37:28 +0000 Date: Tue, 5 Dec 2000 08:36:59 +1000 Message-Id: <200012042236.IAA16219@singularity.tronunltd.com> To: mtd@infradead.org Subject: Problems with r/w on mtdblock0 From: "Ian" Cc: Reply-To: "Ian" Sender: owner-mtd@infradead.org List-ID: Have I done something wrong to get this error? bash# dd if=/dev/zero of=/dev/mtdblock0 bs=512 count=1 end_request: I/O error, dev 1f:00 (mtdblock), sector 0 dd: /dev/mtdblock0: Input/output error 1+0 records in 0+0 records out bash# /bin/dd if=/dev/mtdblock0 of=/dev/null bs=512 count=1 end_request: I/O error, dev 1f:00 (mtdblock), sector 0 /bin/dd: /dev/mtdblock0: Input/output error 0+0 records in 0+0 records out I have no problems reading and writing to nftla on my DoC Millennium ... just not the block device. NB: I'm trying to use the block device, because dd'ing to the first and second 512bytes of the character device, while appearing successful, does not "stick". A hexdump immediately after a dd shows no sign of the dd data. Note, too, that dd'ing to a non existent DoC yields a different error; bash# /bin/dd if=/dev/mtdblock1 of=/dev/null bs=512 count=1 /bin/dd: /dev/mtdblock1: No such device brw-r--r-- 1 root root 31, 0 Dec 4 20:14 /dev/mtdblock0 brw-r--r-- 1 root root 31, 1 Dec 4 20:14 /dev/mtdblock1 Erm; bash# cat /proc/mtd mtd0: 00800000 "DiskOnChip Millennium" is that supposed to be the memory location for the DoC ? Boot process (My DoC drivers are compiled internally to the kernel, *not* as modules) Initializing MTD Layer M-Systems DiskOnChip driver. (C) 1999 Machine Vision Holdings, Inc. DiskOnChip Millennium found at address 0xDC000 Flash chip found: Manufacture ID: 98, Chip ID: E6 (Toshiba TC58V64AFT/DC) 1 flash chips found. Total DiskOnChip size: 8 Mbytes -- http://HumanHeuristic.com/ "Bringing people together in a world full of computers" To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org