linux-kernel - About kernel decompressors (fwd)

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Message-ID: <20100201121454.GA20387@atrey.karlin.mff.cuni.cz>
Date:	Mon, 1 Feb 2010 13:14:56 +0100
From:	Pavel Machek <pavel@....cz>
To:	rpurdie@...ys.net, lenz@...wisc.edu,
	kernel list <linux-kernel@...r.kernel.org>, arminlitzel@....de,
	Cyril Hrubis <metan@....cz>, thommycheck@...il.com,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	dbaryshkov@...il.com, omegamoon@...il.com, eric.y.miao@...il.com,
	utx@...guin.cz, zaurus-devel@...ts.linuxtogo.org
Subject: About kernel decompressors (fwd)

Hi!

I guess Andrea wanted me  to forward this....

----- Forwarded message from Andrea Adami <andrea.adami@...il.com> -----
Date: Mon, 1 Feb 2010 13:08:44 +0100
From: Andrea Adami <andrea.adami@...il.com>
To: pavel@....cz
Subject: About kernel decompressors

Pavel,

I'd like to add a couple of observations in the "Uncompressing broken
with commit e7db7b4270" thread.
Unfortunately I wasn't subscribed and I can't properly reply to the thread...

This is for kernels 2.6.33-rc5 and -rc6 on Sharp corgi (Zaurus
SL-C860, pxa255, 64M RAM)

1) after that commit neither gzip, nor lzo can decompress from NAND
2) I tested the LZMA patch and this also won't help the boot from nand
3) kernel size is uninfluent: I tested 930KiB-lzma kernels and 1240KiB
gzip-kernels.
4) I tried to set stack size to 8192, still no boot

5) all the 3 above kernels boot just fine from kexec (I launch them
with linux-kexecboot-2.6.26)

>>From nand, the boot stops immediately after
**** JUMP to LINUX! ****


Cheers

Andrea

----- End forwarded message -----

-- 
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