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Subject: Re: Opening DEBUG in compressed/head.S,then kernel crashed
From: Domenico Andreoli <cavokz@gmail.com>
Date: Mon, 14 Jan 2013 19:14:35 +0100
To: zhaoyilong <registcn@gmail.com>, linux-kernel@vger.kernel.org
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zhaoyilong <registcn@gmail.com> wrote:

>    When I open the macro DEBUG in the front of  file 
>arch/arm/boot/decompressed/head.S,the kernel runs and stops
>at"Uncompressing 
>Linux... done, booting the kernel."

so the decompressor is able to write to the right console (and uncompress the kernel) but the kernel isn't.

with a bit of luck you could get something appending earlyprintk to the kernel command line.

cheers,
Dome