Re: command bootu to start kernel

From: Belisko Marek <marek.belisko@gmail.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: command bootu to start kernel
Date: Wed, 27 Oct 2010 16:03:31 +0200	[thread overview]
Message-ID: <AANLkTinRKJCJK-3sgA5M0q6RjnKA-42vLf5wVYOCcGeE@mail.gmail.com> (raw)
In-Reply-To: <20101027135438.GL6017@pengutronix.de>

On Wed, Oct 27, 2010 at 3:54 PM, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> On Wed, Oct 27, 2010 at 03:33:15PM +0200, Juergen Beisert wrote:
>> Belisko Marek wrote:
>> > I have mini2440 board with barebox running from RAM.
>> > I try to start uImage kernel for that platform but I'm little bit
>> > confused how to do it.
>> >
>> > I do tftp uImage and the bootu uImage but it always hangs :
>> >
>> > commandline: console=ttySAC0,115200
>> > arch_number: 1999
>> >
>> > I track down that theKernel pointer point to 0xffffffff (memmap return
>> > (void*)-1) which is obviously wrong.
>> > If I understand correctly bootu function take first parameter and try to
>> > open a file and memmap. If file isn't opened successfully then convert
>> > string address which is then taken for
>> > theKernel pointer.
>> >
>> > Is this correct procedure or do I something wrong?
>>
>> Try to start a zImage with "bootz". On my system 'bootm' and 'bootu' do not
>> work.
>
> bootz is for starting zImages. At least this command has a convenient
> name :)
> bootz should work on your system aswell. If not, please complain loudly.
Well it's not working.
tftp zImage
bootz zImage laed to:

ERROR: out of memory and device restart :(.

> bootu is a bit tricky though. To start a raw linux image it has to be
> copied to the exact address is is expected to run, for most boards this
> is start of sdram + 0x8000, but this may differ on some boards (it's
> basically PHYS_OFFSET + TEXT_OFFSET in the kernel)
T
>
> Sascha
>
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thanks,

marek

-- 
as simple and primitive as possible
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Marek Belisko - OPEN-NANDRA
Freelance Developer

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