Date: Thu, 12 Jan 2012 00:03:43 +0200 From: Aleksandr Rybalko <ray@ddteam.net> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-embedded@freebsd.org Subject: Re: Stripping down embedded kernel -- MII PHY & ATA sub-drivers Message-ID: <20120112000343.83ba5630.ray@ddteam.net> In-Reply-To: <CAJ-Vmon=JYfMsqO73DU%2BpXrvJX=syyOCseLKxzDKy5oZBjC5dw@mail.gmail.com> References: <615267607.20120112004555@serebryakov.spb.ru> <CAJ-Vmon=JYfMsqO73DU%2BpXrvJX=syyOCseLKxzDKy5oZBjC5dw@mail.gmail.com>
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On Wed, 11 Jan 2012 13:13:09 -0800
Adrian Chadd <adrian@freebsd.org> wrote:
> Hi,
>
> 2012/1/11 Lev Serebryakov <lev@freebsd.org>:
> > Hello, Freebsd-embedded.
> >
> > Is it possible to build kernel with only needed MII and ATA (legacy
> > ATA) drivers? For example, my Sokeris net5501 has only one MII PHY
> > (for vrX, Generic IEEE 802.3u media interface) and only one ATA
> > controller (AMD CS5536 UDMA100 controller). So it doesn't need all
> > these sub-drivers, and it looks like a lot of objects (several
> > megabytes).
>
> It _should_ only be including the phy's you require, right? (eg, if
> you only include drivers as modules, and "miibus", it shouldn't link
> in any files.)
>
> In terms of ATA controller though - that's a good question. I haven't
> yet looked at breaking out the ATA controller code into chipset stuff.
> Maybe that's a good mini project for you :)
Hi embeddeders! :)
All that good info located in sys/conf/files
PHY's defined as:
phydrrv.c miibus | phydrv
so if you need only one phy, enable
device mii # instead of miibus
device phydrv
same for ata/ahci (I don't remember exact, just look into that file)
also some interesting info for such case may by located in
sys/conf/files.${target_arch}
>
>
> Adrian
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WBW
--
Aleksandr Rybalko <ray@ddteam.net>
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