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From: Wolfgang Denk <wd@denx.de>
To: batsayan.das@tcs.com
Cc: u-boot-users@lists.sourceforge.net, linuxppc-embedded@ozlabs.org
Subject: Re: [U-Boot-Users] Help required to bring up kernel from U-Boot
Date: Fri, 16 Dec 2005 11:11:01 +0100	[thread overview]
Message-ID: <20051216101101.7B82B353416@atlas.denx.de> (raw)
In-Reply-To: Your message of "Fri, 16 Dec 2005 10:19:53 +0530." <OFB8CF31AB.E132BC0B-ON652570D9.001789DD-652570D9.001A8A99@tcs.com>

In message <OFB8CF31AB.E132BC0B-ON652570D9.001789DD-652570D9.001A8A99@tcs.com> you wrote:
>
> I copied uImage to location 0x04000000 and  the Load Address=0x00000000 
> and Entry point=0x00000000.  The bootm 0x04000000 gives the o/p 
> "Transferring Control to Linux" and then nothing comes. Where is the 
> wrong?

This is a FAQ. Please see http://www.denx.de/wiki/DULG/Faq

> 1. What are the minimum information Linux needs from U-Boot to come up 
> properly?  In the Linux source tree we have put some printk statement and 
> found that base address of SDRAM, size, etc are passed correctly to Linux 
> by U-Boot. 

Be careful with printk() at inappropieate places (i.e. too early).

But tell me - how where you  able  to  see  anthing  with  printk  if
"nothing comes" as you write above ???

> 2. Is the info passed from U-Boot is sufficient enough to make the kernel 
> up?

Yes, of course. It works on thousands of systems.

> 3. If not, where should I concentrate in Linux tree?

On your changes.

And please keep this off the U-Boot list. It is off topic here.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
CONSUMER NOTICE:  Because  of  the  "Uncertainty  Principle,"  It  Is
Impossible  for  the  Consumer  to  Find  Out  at  the Same Time Both
Precisely Where This Product Is and How Fast It Is Moving.

  reply	other threads:[~2005-12-16 10:11 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-16  4:49 Help required to bring up kernel from U-Boot batsayan.das
2005-12-16 10:11 ` Wolfgang Denk [this message]
2005-12-16 10:49   ` [U-Boot-Users] " batsayan.das

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