5.1RC1 installation report

FreeBSD-current_at_,

Just to let you know that I've successfully installed FreeBSD/i386  5.1RC1 on 
a Sony Vaio PCG-GRX316G laptop. 

Before the instaIlation starts, I encountered a problem : after probing 
firewire hardware (I have an empty slot on the laptop), the kernel hung (I 
can repeat this every time by booting the install CD without pressing '6') 
with the following output :

fwohci0: Phy 1394 only S100, 0 ports.
fwohci0: fwphy_rddata: loop=100, retry=101
fwohci0: Link S100, max_rec 2 bytes.
fwohci0: max_rec 2 -> 512
firewire0: : <IEEE1394(FireWire) bus> on fwohci0


Fatal trap 12: page fault while in kernel mode
fault virtual address  = 0x2c
fault code                = supervisor read, page not present
instruction pointer    = 0x8:0xc02e5a40
stack pointer           = 0x10:0xc0b2e8c4
frame pointer          = 0x10:0xc0b2e8c8
code segment         = base 0x0, limit 0xfffff, type 0x1b
                              = DPL 0, pres 1, def32 1, gran 1
processor eflags      = interrupt enabled, resume, IOPL = 0
current process       = 0 (swapper)
trap number            = 12
panic: page fault
Terminate ACPI

I solved this by setting hw.pci.allow_unsupported_io_range=1 with the loader. 
After that, the whole installation process went well. I've noticed that the 
output of dmesg now reads :
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.

Was there another workaround ? I tried disabling ACPI, setting 
hint.firewire.0.disabled=1 or hint.fwohci.0.disabled=1 and none of these 
worked. Then I read loader(8).

Hope this helps,
Thomas