Date: Wed, 22 Jun 2005 18:02:39 +0900 From: Hajimu UMEMOTO <ume@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: BTX halted during install Message-ID: <yge1x6usr0w.wl%ume@mahoroba.org> In-Reply-To: <200506211443.11882.jhb@FreeBSD.org> References: <ygepsuyrmms.wl%ume@mahoroba.org> <200506211443.11882.jhb@FreeBSD.org>
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Hi,
>>>>> On Tue, 21 Jun 2005 14:43:10 -0400
>>>>> John Baldwin <jhb@FreeBSD.org> said:
jhb> Hmm, well. First off, try disabling DMA for the hard drive and CD-ROM in the
jhb> BIOS. Secondly, you can hack on btx to add a while (1) loop ('foo: jmp foo')
jhb> and move it around to get it to stop looping after the first fault so you can
jhb> capture the details. I can help you with that if you aren't familiar with
jhb> x86 assembly. Once that is done, I can look at the fault details to try to
jhb> figure out what your BIOS is doing that is making the machine unhappy.
Unfortunately, it seems there is no such setting in BIOS menu to
disabling DMA.
I did patch to stop looping and got the message:
http://www.imasy.or.jp/~ume/FreeBSD/CF-R4/cf-r4-btx-halted.jpg
I heared from takawata-san that EIP=0x107 indicates runaway.
I could install FreeBSD by PXE boot from
6.0-CURRENT-SNAP004-i386-disc1.iso. It's fine to boot FreeBSD which
is installed on HDD.
It seems BTX-halted occurs when loading loader or kernel via legacy
USB. I heared from Panasonic folks that they improved their legacy
USB code for their latest series including CF-R4. It seems there is
some issue in their improvement, and our BTX hits the weak point of
their improvement. However, DOS, Windows and NetBSD are still
bootable on CF-R4...
Sincerely,
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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