From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outbound.mse14.exchange.ms ([216.52.164.186]) by bombadil.infradead.org with esmtp (Exim 4.69 #1 (Red Hat Linux)) id 1OI74q-0003K4-N4 for linux-mtd@lists.infradead.org; Fri, 28 May 2010 21:26:54 +0000 Date: Fri, 28 May 2010 17:26:43 -0400 Subject: Mtd_debug patch From: Stephen Beaver To: Message-ID: Mime-version: 1.0 Content-type: multipart/mixed; boundary="B_3357912405_73358387" List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3357912405_73358387 Content-type: multipart/alternative; boundary="B_3357912405_73392762" --B_3357912405_73392762 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit The attached patch to the current version of mtd_debug (grabbed on5/28/2010) adds two new capabilities: usage: mtd_debug info mtd_debug read mtd_debug write mtd_debug verify mtd_debug erase mtd_debug blank mtd_debug blank ... checks that an area of flash memory if blank (all 0xFFs) ie it verifies that an erase succeeded. mtd_debug verify ... checks that the contents of the flash memory match the specified file. Ie it verifies that a write succeeded. These functions allow things like: #!/bin/sh mtd_debug erase /dev/mtd1 0 0x200000 mtd_debug write /dev/mtd1 0 0x150000 uImage if ( mtd_debug verifiy /dev/mtd1 0 uImage ) ; then reboot else # Better try again, or we will die fi Both have been tested on NOR and NAND flash, and are just simple modifications to the existing file_from_flash() function. Steve -- Stephen Beaver | ANXeBusiness | Engineering |219 232-8371 | www.anx.com | beavers@anx.com Think Green...do you really need to print this email? Reduce, reuse, recycle! --B_3357912405_73392762 Content-type: text/html; charset="US-ASCII" Content-transfer-encoding: quoted-printable Mtd_debug patch The attached patch to the current version of mtd_debug (grabbed on5/28/201= 0) adds two new capabilities:

usage: mtd_debug info   <device><= BR>        mtd_debug read   <de= vice> <offset> <len> <dest-filename>
       mtd_debug write  <device&= gt; <offset> <len> <source-filename>
      mtd_debug verify= <device> <offset> <cmp-filename>
       mtd_debug erase  <devic= e> <offset> <len>
      mtd_debug blank =  <device> <offset> <len>

mtd_debug blank ... checks that an area of flash memory if blank (all 0xFFs= ) ie it verifies that an erase succeeded.
mtd_debug verify ... checks that the contents of the flash memory match the= specified file. Ie it verifies that a write succeeded.

These functions allow things like:

#!/bin/sh

mtd_debug erase /dev/mtd1 0 0x200000
mtd_debug write /dev/mtd1 0 0x150000 uImage
if ( mtd_debug verifiy /dev/mtd1 0 uImage ) ; then
   reboot
else
   # Better try again, or we will die
fi



Both have been tested on NOR and NAND flash, and are just simple modificati= ons to the existing file_from_flash() function.

Steve
--
Stephen Beaver | ANXeBusiness | = Engineering |219  232-8371 | www.anx.com | beavers@anx.com
Think Green...do you r= eally need to print this email?  Reduce, reuse, recycle!
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