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Date: Wed, 14 Mar 2007 16:23:39 -0700
From: "Mark A. Greer" <mgreer@mvista.com>
To: Scott Wood <scottwood@freescale.com>
Subject: Re: [PATCH 17/19] bootwrapper: compatibility layer for old U-Boots
	(a.k.a. cuImage, cuboot)
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On Wed, Mar 14, 2007 at 04:48:49PM -0500, Scott Wood wrote:
> Mark A. Greer wrote:
> >Are you sure that '_end' (which is the end of the zImage/cuImage)
> >is safe to use?  If the kernel is large enough (e.g., INITRAMFS)
> >it will overwrite your dtb when its decompressed and relocated to 0.
> >You need to grok the elfheader to figure out where the kernel will end
> >and take the max of that and _end.
> 
> Wouldn't it overwrite the bootwrapper itself before overwriting the heap?

Sure but that doesn't matter--the kernel is running so the bootwrapper's
life is over but the dtb's life isn't.

Mark