From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta071a.interbusiness.it ([85.37.17.71]) by canuck.infradead.org with esmtp (Exim 4.52 #1 (Red Hat Linux)) id 1E2vfN-00011q-W3 for linux-mtd@lists.infradead.org; Wed, 10 Aug 2005 14:51:08 -0400 From: Gianluca To: Marc Singer Date: Wed, 10 Aug 2005 20:30:20 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200508102030.20288.gianlucarenzi@eptar.com> Cc: linux-arm-kernel@lists.arm.linux.org.uk Subject: JFFS2 and LPD7A404 List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hello Marc! I was wondering if (and naturally how) to use an unused partition on the internal flash of LogicPD LH7A404 board. As you surely know this board has a couple of IntelStrataflash 28F640 (2 chips x 16bit each) for a total of 16MBytes arranged in a 32bit format. Assuming I am using the standard physical mapped partition scheme (from command line as: mtdparts=phys_mapped_flash:512k@0(boot)ro,1536k@512k(kernel)ro,-(user) and the kernel is looking at them as: physmap flash device: 1000000 at 0 phys_mapped_flash: Found 1 x32 devices at 0x0 in 32-bit bank Intel/Sharp Extended Query Table at 0x0031 Using buffer write method cfi_cmdset_0001: Erase suspend on write enabled 3 cmdlinepart partitions found on MTD device phys_mapped_flash Creating 3 MTD partitions on "phys_mapped_flash": 0x00000000-0x00080000 : "boot" mtd: Giving out device 0 to boot 0x00080000-0x00200000 : "kernel" mtd: Giving out device 1 to kernel 0x00200000-0x00800000 : "user" mtd: Giving out device 2 to user and looking at /proc I can see: # cat /proc/mtd dev: size erasesize name mtd0: 00080000 00020000 "boot" mtd1: 00180000 00020000 "kernel" mtd2: 00600000 00020000 "user" # cat /proc/partitions major minor #blocks name 3 0 125440 hda 3 1 125333 hda1 31 0 512 mtdblock0 31 1 1536 mtdblock1 31 2 6144 mtdblock2 Why is it: phys_mapped_flash: Found 1 x32 devices at 0x0 in 32-bit bank Intel/Sharp Extended Query Table at 0x0031 and not: phys_mapped_flash: Found 2 x16 devices at 0x0 in 32-bit bank Intel/Sharp Extended Query Table at 0x0031 ??? Any clue? So, supposing everything is working fine, I just downloaded (compiled and cross-compiled latest mtd tools) and created a filesystem for my "user" partition. (BTW has you checked out that the size is only 6MiB?) On HOST machine: mkfs.jffs2 -e 262144 -r /myhome/personaldata -o mhpersonaldata.jffs2.img (about 1MiB) Then on target (ARM): flash_eraseall -j /dev/mtd2 After a while (it takes about 10 seconds to finish at 100% (BTW I saw the flash erasesize block is only 128KiB!!!)) I tried to write it into a fresh erased flash: cp mhpersonaldata.jffs2.img /dev/mtdblock2 Finally I tried to mount as local filesystem: mount -t jffs2 /dev/mtdblock2 /mhpersonaldata-folder/ ...and I received a lot of errors like below: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005a0024: 0xffff instead Further such events for this erase block will not be printed jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0000: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0004: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0008: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c000c: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0010: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0014: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0018: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c001c: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0020: 0xffff instead jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005c0024: 0xffff instead Further such events for this erase block will not be printed jffs2_scan_eraseblock(): Node at 0x005e0000 {0x1985, 0x00b0, 0x00b0000c) has invalid CRC 0x00b0b0b1 (calculated 0x9c857fd2) What is happened? Do I need a patch for using flash in this architecture? Or what am I wrong? Best regards, -- Gianluca Renzi Eptar s.r.l. Via Celletta 8/B 40026 Imola (BO) ITALY Tel.: +39-0542-609060 Fax.: +39-0542-609054