From: Sascha Hauer <s.hauer@pengutronix.de>
To: Jose Luis Zabalza <jlz.3008@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: Novice questions
Date: Fri, 2 Jul 2010 09:16:08 +0200 [thread overview]
Message-ID: <20100702071608.GE5929@pengutronix.de> (raw)
In-Reply-To: <AANLkTil-pLayTps_sfU1fURx3MrgFTvnaABgP5QSfn9h@mail.gmail.com>
Hello Jose,
On Fri, Jul 02, 2010 at 05:03:27AM +0200, Jose Luis Zabalza wrote:
> Hello all
>
> I'm trying write some code into barebox and I have seen things that
> caught my attention.
>
> 1.- Modules on barebox. lsmod, insmod commands, EXPORT_SYMBOL() macro.
> What is the purpouse of these ? Modules have no means less memory
> footprint ;-??
We have modules support because we can ;)
I haven't used it in production yet, but there are usecases for it. I'm
currently porting UBI to barebox and it turns out to be quite huge
(~40k). You normally do not need UBI support for normal booting, but you
need it for updating UBI images. So you could make a module from it and
load it on demand.
> 2.- usb command is on drivers/usb/usb.c file. What is the reason why
> it is not on commands dir?
Some commands are in other directory because they are close to a
particular framework. We could move it to commands though.
> 3.- What is the purpouse of usb command. Discover devices but after I
> can't read because I have not drivers associates to them. Actually, is
> there any way to read them?
You probably tried an USB memory stick. These are not yet supported.
Barebox currently only supports USB network adapters.
> 4.- Does anyone use the usb for anything other than firmwarize the
> device with DFU?
Yes, for networking on boards which do not have a NIC, like the Beagle
Board.
Sascha
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prev parent reply other threads:[~2010-07-02 7:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-02 3:03 Jose Luis Zabalza
2010-07-02 7:11 ` Robert Schwebel
2010-07-02 7:16 ` Sascha Hauer [this message]
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