Mtd_debug patch

Mtd_debug patch

[Stephen Beaver]

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The attached patch to the current version of mtd_debug (grabbed on5/28/2010)
adds two new capabilities:

usage: mtd_debug info   <device>
       mtd_debug read   <device> <offset> <len> <dest-filename>
       mtd_debug write  <device> <offset> <len> <source-filename>
       mtd_debug verify <device> <offset> <cmp-filename>
       mtd_debug erase  <device> <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
modifications to the existing file_from_flash() function.

Steve
-- 
Stephen Beaver | ANXeBusiness | Engineering |219  232-8371 | www.anx.com |
beavers@anx.com
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Re: Mtd_debug patch

[Artem Bityutskiy]

Hi Stephen,

On Fri, 2010-05-28 at 17:26 -0400, Stephen Beaver wrote:
> The attached patch to the current version of mtd_debug (grabbed
> on5/28/2010) adds two new capabilities:
> 
> usage: mtd_debug info   <device>
>        mtd_debug read   <device> <offset> <len> <dest-filename>
>        mtd_debug write  <device> <offset> <len> <source-filename>
>       mtd_debug verify <device> <offset> <cmp-filename>
>       mtd_debug erase  <device> <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

Looks like a useful feature, but I cannot apply your patch because it is
not applicable to the latest mtd-utils.git. Also, your patch has many
trailing white-spaces. Could you please re-send it in inlined form - it
will make it easier to review it and reply to you (it it difficult to
comment attached patches).

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)