Re: booting problems with the cdrom

[Hiten Pandya <hmp@xxxxxxxxxxxxx>]

scalopus wrote:
> Hi all,
>   i am trying to install dfbsd in a IBM Netfinity 5000 server:
> http://www-1.ibm.com/support/docview.wss?uid=psg1MIGR-49JP55, 
> but I have several problems with the cdrom.
>
> 1) First i tryed the 1.2 release, this iso:
> 2CSNAP-20050731-1130-Release-1.2.iso.bz2
>   The cd even doesn't boot, i can't see the Boot Menu (the
> dragonfly acsi), it freezes in the "BTX Loader". 
>
> 2) Later i tryed the development iso:
> 2CSNAP-20050724-2330-Devel.iso.bz2
>   This cd boots, i can see the Boot menu, but when booting
> the kernel it crashes when accessing to the ata, suppose the
> atapi, the acd0 cdrom, with the following error:
>
> acd0: MODE_SENSE_BIG command timeout - resetting
> ata0: WARNING: atapi resetting donecount 28 for retry
> ata0: resetting devices .. done

Alright.  This issue has been described before somewhere on the FreeBSD 
mailing lists but it was fixed in one of the ATA round ups if I am not 
mistaken.

Does this machine support more than one processor ? I.e. SMP.

Could you please boot the machine with '-v' flag so it provides verbose 
information about your hardware.

>   It repeats about 5-7 times, and after it kernel crashes:
>
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x20029
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc01a0c51
> stack pointer = 0x10:0xc0715ca8
> frame pointer = 0x10:0xc715ccc
> code segment = base 0x0, limit 0xffff, type 0x1b
> 	     = DPL 0, pres 1, def32 1, gran 1
> processor eflags = interrupt enabled, resume, IOPL = 0
> current process = 0 (swapper)
> current thread = pri 108 (CRIT)
>
> kernel: type 12 trap, code=0
> Stopped at acd_describe+0x7c0: movzbl 0x5(%eax),%eax
> db>
>
>   Maybe it is DMA issue, the CD-Rom in the bios is in
> PIO Mode 3, and i can't change it.
>   I can install fbsd (but i dont see after installation
> the cdrom), windows 2000 server and nbsd loads the
> installation. So the cdrom works fine.

It can't be a DMA issue since it is not enabled for ATAPI, aka CD-ROM type 
devices by default.  You could try turning off the ATA system's DMA by 
typing the command 'set hw.ata.dma=0' at the loader stage.

There are quite a few APIC related issues on Netfinity servers that 
require manual rewiring from the BIOS but lets hope that is not the case 
for yours. :-)

Regards,

				-Hiten
				hmp@xxxxxxxxxxxxx