From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bear <jilingshu@gmail.com>
Date: Mon, 06 Jun 2011 09:34:52 +0800
Subject: [U-Boot] How to boot a newer version of u-boot from a older one?
In-Reply-To: <20110605193727.DB7E317367FA@gemini.denx.de>
References: <4DEB280E.3030405@Gmail.com>
	<20110605071357.9BF74184CAD6@gemini.denx.de>
	<4DEB3B83.8010608@Gmail.com>
	<20110605193727.DB7E317367FA@gemini.denx.de>
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To: u-boot@lists.denx.de

hi,
Thanks for your help. I have read that FAQ and understood your meaning. :)


On 6/6/2011 3:37 AM, Wolfgang Denk wrote:
> Dear Bear,
>
> please keep the mailing list on Cc:.
>
> In message<4DEB3B83.8010608@Gmail.com>  you wrote:
>>
>> I sent that email via Thunderbird as Plain Text. Maybe it caused by my
>> UTF-8 encoding? I am very sorry about that.
>
> I don't know.
>
>>> For I have no USBTAP, there are no way for me to flush either NOR Flash
>>> or NAND Flash, so I am afraid if I install my u-boot to NOR Flash and
>>> that u-boot cannot run correctly, my board would be unavailable. So I
>>> wanna boot the latest version of u-boot from the original one. I tried
>>> these:
>>> =>  tftp 0x01000000 u-boot.bin
>>> =>  go 0x01000000
>>>
>>> But my board reset automatically. Could you tell me how to do with this?
>
> This doesn't work.  See the explanation in the FAQ:
> http://www.denx.de/wiki/view/DULG/CanUBootBeConfiguredSuchThatItCanBeStartedInRAM
>
> Best regards,
>
> Wolfgang Denk
>