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Date:      Thu, 24 May 2012 08:30:16 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        Damjan Marion <dmarion@FreeBSD.org>
Cc:        Aleksandr Rybalko <ray@dlink.ua>, arm@FreeBSD.org, Adrian Chadd <adrian@FreeBSD.org>, freebsd-current FreeBSD <freebsd-current@FreeBSD.org>
Subject:   Re: Customizing ubldr build...
Message-ID:  <0DE094C8-38CC-4527-98D6-C7E645EA324A@bsdimp.com>
In-Reply-To: <8E4F983B-75F7-45DB-A92E-E66C721896E5@FreeBSD.org>
References:  <E84EA543-11A9-4EA6-9313-6908F485C569@freebsd.org> <CAJ-VmomyYPzqEJ86a6tfKSDeYrBqD21UDjefqyFNZC4yJ-pLWA@mail.gmail.com> <EBC5FF24-B1F5-43CD-AB1C-3BB659E8F5C6@freebsd.org> <B9008F20-E417-48BC-AAAC-8111A39B0A8B@FreeBSD.org> <20120524112546.bdef0c3c.ray@dlink.ua> <8E4F983B-75F7-45DB-A92E-E66C721896E5@FreeBSD.org>

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On May 24, 2012, at 3:40 AM, Damjan Marion wrote:

>=20
> On May 24, 2012, at 10:25 AM, Aleksandr Rybalko wrote:
>=20
>> On Thu, 24 May 2012 10:16:42 +0200
>> Damjan Marion <dmarion@FreeBSD.org> wrote:
>>=20
>>>>=20
>>>> On May 24, 2012, at 6:35 AM, Tim Kientzle wrote:
>>>>=20
>>>>> I think the PandaBoard ES is fully supported by U-Boot,
>>>>> so it should be possible to use ubldr as part of the boot
>>>>> chain for that just like I've been doing with BeagleBone.
>>>>=20
>>>> What are the benefits of using ubldr compared to what we are doing
>>>> today(load; go)?
>>=20
>> Preload modules for example. (if it accessible of course)
>=20
> I was looking into this few months ago but I didn't found a value in =
doing
> this in embedded world where we already have custom kernel for each =
SoC/board.
>=20
> Maybe we will have GENERIC arm kernel one day, but there is long =
road....

I'm working on that, at least for all Atmel kernels.  We'll have at =
least three kernels though: armv4 little endian, armv4 big endian and =
armv6 little endian.  Even for atmel, some of the id registers are such =
we may need multiple kernels.

Warner




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