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Date:      Mon, 23 Dec 2002 14:05:59 -0800
From:      Marcel Moolenaar <marcel@xcllnt.net>
To:        wu barry <wu_qingbo1969@hotmail.com>
Cc:        freebsd-ia64@FreeBSD.ORG
Subject:   Re: about freebsd port to intel tiger 4 ia64 machine
Message-ID:  <20021223220559.GA885@dhcp01.pn.xcllnt.net>
In-Reply-To: <F169ur6nzO9OMHffNPL0000187f@hotmail.com>
References:  <F169ur6nzO9OMHffNPL0000187f@hotmail.com>

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On Mon, Dec 23, 2002 at 10:04:05PM +0800, wu barry wrote:
> 
> You mean just usb keyboard and usb mouse influence RC2 to install.
> But the freebsd 5.0 kernel for ia64 is ok, and did not to modify
> anything. Just usb problems. Am I right?

I'm not quite sure what you mean, but USB causes the kernel to hang
on both the BigSur prototype and Tiger machines. I think this is
specific to the UHCI host controller. For this reason 5.0-RC1 and
5.0-RC2 don't have USB support in the kernel. 5.0-RELEASE is due
in Januray (RC=Release Candidates), so we have a couple of weeks to
try to find the cause and fix it in time for 5.0-RELEASE. Unless we
can track it down we probably want to disable support for at least
the UHCI controller. That way one can at least boot and install
with a serial console. A kernel that hangs during boot is useless
in all cases.

> Then what difference about
> hp zx1 and intel e8870 chipset in ia64 for freebsd.

At this time the only difference is that the zx1 does not have ISA
emulation. From a chipset point of view, FreeBSD does not take full
advantage of the abilities of the chipset yet.

> Or this problem
> is solved by efi? Am I right?

EFI doesn't really play a role. It's mostly ACPI, SAL and PAL that
have well-defined behaviour and create the necessary abstraction.

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel@xcllnt.net

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