From: Gary Thomas <gary@mlbassoc.com>
To: Alex <baggerml@gmail.com>
Cc: openembedded-devel@lists.openembedded.org
Subject: Re: kernel booting and params
Date: Wed, 27 Jan 2010 06:33:58 -0700 [thread overview]
Message-ID: <4B6040C6.2020501@mlbassoc.com> (raw)
In-Reply-To: <4B603B5F.8080009@gmail.com>
On 01/27/2010 06:10 AM, Alex wrote:
> Gary Thomas wrote:
>> On 01/27/2010 06:03 AM, Alex wrote:
>>> Hello everyone!
>>>
>>> Trying to find information about kernel booting gave me nothing so I decided to write here.
>>>
>>> The question is: how does linux kernel know where to get its parameters' string? To be more precise, what actions in general should a linux bootloader do to tell the kernel its
>>> params and boot it?
>>>
>>> ...
>>
>> This process is different for every architecture (x86, arm, powerpc, ...)
>>
>> What platform(s) are you trying to understand?
>
> It is an arm cpu. The platform is dm6446.
n.b. replies should be on the mailing list so that all benefit.
The information for ARM is passed in memory at a fixed block with
pointers and tags describing the various data. The Linux source
file '.../arch/arm/include/asm/setup.h' describes how this works.
Look at U-Boot to see how it handles this linkage.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
next prev parent reply other threads:[~2010-01-27 13:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-27 13:03 kernel booting and params Alex
2010-01-27 13:06 ` Gary Thomas
[not found] ` <4B603B5F.8080009@gmail.com>
2010-01-27 13:33 ` Gary Thomas [this message]
2010-01-27 13:46 ` Alex
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