From: Wolfgang Denk <wd@denx.de>
To: bhavin <bhavinp@einfochips.com>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: Problems with PM826 card
Date: Thu, 04 Sep 2003 14:40:06 +0200 [thread overview]
Message-ID: <20030904124011.4A3ADC59E4@atlas.denx.de> (raw)
In-Reply-To: Your message of "Thu, 04 Sep 2003 10:25:47 +0530." <3F56C5D3.9080202@einfochips.com>
Dear Bhavin,
in message <3F56C5D3.9080202@einfochips.com> you wrote:
>
> I am using a PM826 card with our own developed carrier extension
> board. I have build the ppcboot image. I am booting the image from flash
Please upgrade. PPCBoot is pretty old, and a lot of modifications
have been added lately. Please use a recent version of U-Boot instead
(0.4.7).
> and through serial communication SCC and I have configured the correct
> serial channel number from our card's schematics. Now, the ppcboot works
> but, when I try to write something in flash through ppcboot (either
> 'loadb' command or 'nm' command) the flash contents are not getting
Neither the "loadb" nor "nm" commands can operate directly on flash
memory. please download to RAM (or modify the RAM contents) and use
the "cp" command to write to flash.
> changed. All other functionality of ppcboot works like erase, read, etc.
> but all the functionality related to 'write to flash' is not working.
I think all these things are working fine, you are just using them
wrong.
> Can any one please suggest me what could be the possible reason??
Read the documentation; see
http://www.denx.de/twiki/bin/view/DULG/Manual
> Also, I have one separate program which, I downloaded from somewhere
> which does some read/write operation to the PM826 card's flash. Through
> that program the writing is working perfect.
It's working perfectly in PPCBoot and U-Boot, too. Just remember that
the command to write to flash is "cp" (and it's variants
"cp.{l|w|b}").
> Has it something to do with ppcboot configuration or the addressing mode?
No, it is a user error.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
Software suppliers are trying to make their software packages more
``user-friendly''. . . . Their best approach, so far, has been to
take all the old brochures, and stamp the words, ``user-friendly'' on
the cover. - Bill Gates
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2003-09-04 12:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-04 4:55 Problems with PM826 card bhavin
2003-09-04 12:40 ` Wolfgang Denk [this message]
2003-09-04 14:10 ` bhavin
2003-09-04 14:17 ` Wolfgang Denk
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