From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from majordomo by infradead.org with local (Exim 3.03 #1) id 13Bluf-0001oG-00 for mtd-list@infradead.org; Mon, 10 Jul 2000 23:20:29 +0100 Received: from web5304.mail.yahoo.com ([216.115.106.113]) by infradead.org with smtp (Exim 3.03 #1) id 13Blud-0001ng-00 for mtd@infradead.org; Mon, 10 Jul 2000 23:20:27 +0100 Message-ID: <20000710221950.8117.qmail@web5304.mail.yahoo.com> Date: Mon, 10 Jul 2000 18:19:50 -0400 (EDT) From: Juan Gonzo Subject: mtd devices & jffs To: MTD Mailing List MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-mtd@infradead.org List-ID: Compiled the MTD code into a Linux 2.2.14 kernel and loaded it onto our system (ARM processor and Intel Strataflash). The system boots up. Here is the MTD related messages: ======================================= NORA: Found a coupled pair of CFI devices at location 0 in 16 bit mode Primary Vendor Command Set: 0001 (Intel/Sharp Extended) Primary Algorithm Table at 0031 Alternative Vendor Command Set: 0000 (None) No Alternate Algorithm Table Vcc Minimum: 2.7 V Vcc Maximum: 3.6 V No Vpp line Typical byte/word write timeout: 128 µs Maximum byte/word write timeout: 2048 µs Typical full buffer write timeout: 128 µs Maximum full buffer write timeout: 2048 µs Typical block erase timeout: 1024 µs Maximum block erase timeout: 16384 µs Chip erase not supported Device size: 0x1000000 bytes (16 Mb) Flash Device Interface description: 0x0002 - supports x8 and x16 via BYTE# with asynchronous interface Max. bytes in buffer write: 0x20 Number of Erase Block Regions: 1 Erase Region #0: BlockSize 0x20000 bytes, 128 blocks Intel/Sharp Extended Query Table at 0x0031 number of CFI chips: 1 ======================================= Everything looks ok. I can't get the MAKEDEV script to run on our system, so I try to do a couple manually. I enter 'mknod /dev/mtd0 c 90 0' and then 'mknod /dev/mtdblock0 b 31 0'. Both work and the devices are present in the /dev dir. However when I try to mount JFFS using 'mount -t jfss /dev/mtdblock0 /mnt', I get the following: ======================================= [root@Linux /dev]$mount -t jffs /dev/mtdblock0 /mnt JFFS: Trying to mount device 1f:00. jffs_scan_flash(): start pos = 0x0, end = 0x16777216 jffs_scan_flash(): 0xff at pos 0x0. jffs_scan_flash(): 0xff ended at pos 0x1097152. jffs_scan_flash(): 0x00 at pos 0x1097152. jffs_scan_flash(): 0x00 ended at pos 0x1098176. *************** Dirty flash memory or bad inode: hexdump(pos = 0x1098176, len = 128): 1098176: 0018 0000 0018 0000 3d00 0000 ac05 0000 ........=....... 1098192: 8f16 0000 0100 0000 0000 0000 0000 0000 ................ 1098208: 0020 0000 0020 0000 0018 0000 8618 5d39 ..............]9 1098224: ea18 5d39 0100 1400 53ef 0100 0100 0000 ..]9....S....... 1098240: 8518 5d39 004e ed00 0000 0000 0100 0000 ..]9.N.......... 1098256: 0000 0000 0b00 0000 8000 0000 0000 0000 ................ 1098272: 0200 0000 0100 0000 d285 611c 3947 4857 ..........a.9GHW 1098288: a6c2 3cee 5e93 efb7 0000 0000 0000 0000 ..<.^........... Didn't read all bytes in flash_read_u32() Didn't read all bytes in flash_read_u32() Didn't read [etc, this line goes on for many many screens] ======================================= Do I need to 'mknod' all the devices that MAKEDEV does? To me, this seems like a problem beyond that. Any suggestions as to what is going on? Is it my flash? Thanks, -- kelly _______________________________________________________ Do You Yahoo!? Get your free @yahoo.ca address at http://mail.yahoo.ca To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org