FreeBSD 5.x installation hangs on Toshiba Tecra A2

[M. Warner Losh]

In message: <79e6b51a7fb7d0233cb0c9e886d92ddf at FreeBSD.org>
            John Baldwin <jhb at FreeBSD.org> writes:
: 
: On May 18, 2005, at 2:56 AM, Munehiro Matsuda wrote:
: 
: > Hello Jamil,
: >
: > How about setting 'hw.pci.enable_io_modes=0' at loader prompt or
: > set it in loader.conf? Toshiba laptops seems to need this.
: >
: > Hope this helps,
: >   Haro
: > =---------------------------------------------------------------------- 
: > --------
: >            _ _    Munehiro (haro) Matsuda
: >  -|- /_\  |_|_|   Internet Solution Dept., KGT Inc.
: >  /|\ |_|  |_|_|   2-8-8 Shinjuku Shinjuku-ku Tokyo 160-0022, Japan
: >                   Tel: +81-3-3225-0767  Fax: +81-3-3225-0740
: >                   Email: haro at kgt.co.jp
: >
: > From: "Jamil Ahmed" <jamil.ahmed at hotmail.co.uk>
: > Date: Wed, 18 May 2005 07:42:41 +0100
: > ::Hello,
: > ::
: > ::I am having trouble installing FreeBSD 5.x on my laptop (the  
: > processor is
: > ::Intel Centrino 1.7GHz). I have tried 5.3 and now 5.4, the load stops  
: > at the
: > ::same place for both. FreeBSD 4.10 installs fine. I have tried the  
: > normal
: > ::boot and also boot with ACPI disabled without luck. The following is  
: > the
: > ::tail end of the output when booting with verbose output
: > ::
: > ::pcib0: slot 2 INTA routed to irq 10 via \_SB_.LNKA
: > ::found-> vendor=0x8086, dev=0x3582, revid=0x02
: > ::        bus=0, slot=2, func=0
: > ::        class=03-00-00, hdrtype=0x00, mfdev=1
: > ::        cmdreg=0x0007, statreg=0x0090, cachelnsz=0 (dwords)
: > ::        lattimer=0x00 (0 ns), mingnt-0x00 (0 ns), maxlat=0x00 (0 ns)
: > ::        intpin=a, irq=10
: > ::        powerspec 1 supports D0 D1 D3 current D0
: > ::        map[10]: type 3, range 32, base 00000000, size 27, memory  
: > disabled
: > ::
: > ::
: > ::the install just stalls at this point.
: 
: So, the problem is that we turn on the memory BARs by default.  Note  
: that the BAR has a base address of 0, so I wonder if it starts  
: "answering" to mem access to low memory.  Note it has a range of 27  
: bits, or 128 MB.  We could probably just move the check for a base of 0  
: up above the pci_enable_io_modes code to do that.  Warner, what do you  
: think?

Sounds reasonable to me on its surface.  Wanna shoot me a patch?

Warner