From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Stuart Yoder <stuart.yoder@conformative.com>
Cc: 'linuxppc-dev list' <linuxppc-dev@ozlabs.org>
Subject: RE: PowerPC + SMP
Date: Wed, 27 Apr 2005 08:27:29 +1000 [thread overview]
Message-ID: <1114554449.7183.69.camel@gaston> (raw)
In-Reply-To: <054301c54a6f$d1cf82b0$2f010a0a@foundation.com>
On Tue, 2005-04-26 at 09:54 -0500, Stuart Yoder wrote:
> Thanks Ben.
>
> That raises a question though-- how can I know what assumptions the
> kernel makes about the state of the CPU/system when it begins execution?
> Is this clearly documented anywhere?
>
> I am using U-boot on my SMP system and U-boot is not SMP aware. Do you
> know of other open source bootloaders for Linux that would set up the
> CPUs as the kernel expects.
No, it's up to you to configure the CPU properly. I'm surprised that
uBoot doesn't set it up properly though, but then, when you bringup a
board, you rarely use a bootloader like that "as-is" :)
In general, the kernel except the CPU to be in working condition, which
I consider meanings having necessary HID bits set for proper coherency
etc... on an SMP system :)
Ben.
next prev parent reply other threads:[~2005-04-26 22:28 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-25 21:11 PowerPC + SMP Stuart Yoder
2005-04-26 3:36 ` Benjamin Herrenschmidt
2005-04-26 14:54 ` Stuart Yoder
2005-04-26 17:35 ` Wolfgang Denk
2005-04-26 19:07 ` Stuart Yoder
2005-04-26 22:27 ` Benjamin Herrenschmidt [this message]
2005-04-26 23:04 ` Paul Mackerras
-- strict thread matches above, loose matches on Subject: below --
2005-04-27 4:37 Frank
2005-04-25 21:10 Stuart Yoder
2005-04-25 21:39 ` Kumar Gala
2005-04-26 19:16 ` Stuart Yoder
2005-04-26 19:23 ` Kumar Gala
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