Re: Booting original G3 iMac?

[Jarle Greipsland <jarle%uninett.no@localhost>]

Michael <macallan%netbsd.org@localhost> writes:
> Jarle Greipsland <jarle%uninett.no@localhost> wrote:
> > did anyone find a solution to this problem?  I recently tried to
> > resurrect an old G3 iMac Bondi Blue and dropped in a -current
> > GENERIC kernel, and it exhibited the exact behavior described
> > above, i.e. the last thing printed on the display was a message
> > about "scsibus0: waiting 2 seconds for devices to settle".  And
> > then nothing more.  Any suggestions as to what I should try?
> 
> I think I said this before, but do you have fwohci in your kernel?
> It's known to hang indefinitely on some Apple hardware ( like G3
> PowerBooks, which is why it doesn't attach there ) although it
> used to work on at least 1st generation iMacs and does work
> on G4 hardware. The symptoms would be exactly what you
> describe - the driver hangs while scanning for firewire devices,
> which happens just after that message.
I have tried:
o Booted a -current kernel and entered userconf.  Disabled
  fwohci*, and continued.  It got stuck at the scsibus0:...
  message again.
o Built a custom -current kernel without any traces of fwohci and
  tried to boot it.  Again, it got stuck at the same place.
o Booted the same custom -current kernel, but this time with a
  pre-prepared root-on-NFS setup.  Entered userconf, and disabled
  wdc*.  Now the system booted all the way to multi-user.

In my (fairly un-informed) opinion, there is a problem with the
wdc/atabus/wd-drivers on the old G3 iMacs.  Possibly something to
to with the interrupts, as the system seems to get stuck shortly
after the biomask/netmask/ttymasks are printed.  (why are they
all identical, btw?)

A dmesg of the root-on-NFS setup below.

Any suggestions as to what I should try next?

                                        -jarle

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NetBSD 6.99.7 (BONDI) #9: Fri Jun  8 11:51:24 CEST 2012
        
jarle%singsaker.uninett.no@localhost:/home/macpcc/obj/sys/arch/macppc/compile/BONDI
total memory = 98304 KB
avail memory = 89036 KB
timecounter: Timecounters tick every 10.000 msec
userconf: configure system autoconfiguration:
uc> disable wdc*
[  1] wdc* disabled
uc> exit
Continuing...
found heathrow PIC at 80800000
bootpath: /pci/mac-io/ethernet:/netbsd
mainbus0 (root)
cpu0 at mainbus0: 750 (Revision 2.2), ID 0 (primary)
cpu0: HID0 0x8050c0a4<EMCP,NAP,DPM,ICE,DCE,SGE,BTIC,BHT>, powersave: 1
cpu0: 233.33 MHz, no-parity 512KB WB L2 cache (PB SRAM) at 2:1 ratio
grackle0 at mainbus0
pci0 at grackle0 bus 0
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 0 function 0
pchb0: Motorola MPC106 "Grackle" Host Bridge (rev. 0x40)
pchb0: L2 cache: 256K, uniprocessor/none mode
obio0 at pci0 dev 16 function 0: addr 0x80800000
mesh0 at obio0 offset 0x10000 irq 12: 50MHz, SCSI ID 7
scsibus0 at mesh0: 8 targets, 8 luns per target
mesh0: couldn't establish power handler
zsc0 at obio0 irq 15,16
zstty0 at zsc0 channel 0
zstty1 at zsc0 channel 1
davbus at obio0 offset 0x14000 not configured
fdc at obio0 offset 0x15000 not configured
cuda0 at obio0 offset 0x16000 irq 18
nadb0 at cuda0: Apple Desktop Bus
iic at cuda0 not configured
ide at obio0 offset 0x20000 not configured
ide at obio0 offset 0x21000 not configured
bm0 at obio0 offset 0x11000 irq 42,33: address 00:05:02:e3:6f:f9
lxtphy0 at bm0 phy 0: LXT970 10/100 media interface, rev. 1
lxtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
nvram0 at obio0 offset 0x60000
machfb0 at pci0 dev 18 function 0: ATI Technologies 3D Rage IIC (rev. 0x3a)
machfb0: aperture size 01000000
machfb0: 16 MB aperture at 0x81000000, 4 KB registers at 0x80881000
machfb0: 128 KB ROM at 0x00000000
max_dotclock according to supported modes: 78750
CLOCK_CNTL: 001f0a00
using clock 0
ref_div: 31
mclk_fb_div: 181
machfb0: 6144 KB SGRAM 83.598 MHz, maximum RAMDAC clock 230 MHz
machfb0: initial resolution 1024x768 at 8 bpp
wsdisplay0 at machfb0 kbdmux 1: console (default, vt100 emulation)
wsmux1: connecting to wsdisplay0
direct rendering for machfb0 unsupported
ohci0 at pci0 dev 20 function 0: Opti 82C861 (rev. 0x10)
ohci0: interrupting at irq 28
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
biomask 1f000000 netmask 1f000000 ttymask 1f000000
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
timecounter: Timecounter "mftb" frequency 16666666 Hz quality 100
scsibus0: waiting 2 seconds for devices to settle...
uhub0 at usb0: Opti OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1 at uhub0 port 1: NEC hub, class 9/0, rev 1.00/1.00, addr 2
uhub1: 4 ports with 4 removable, self powered
uhidev0 at uhub1 port 1 configuration 1 interface 0
uhidev0: Alps Electric M2452, rev 1.00/1.01, addr 3, iclass 3/1
ukbd0 at uhidev0
wskbd0 at ukbd0: console keyboard, using wsdisplay0
uhidev1 at uhub1 port 2 configuration 1 interface 0
uhidev1: Logitech M4848, rev 1.00/5.00, addr 4, iclass 3/1
ums0 at uhidev1: 1 button
wsmouse0 at ums0 mux 0
swwdog0: software watchdog initialized
boot device: bm0
root on bm0
nfs_boot: trying DHCP/BOOTP
nfs_boot: DHCP next-server: 192.168.17.4
nfs_boot: my_name=bondi
nfs_boot: my_domain=local
nfs_boot: my_addr=192.168.17.17
nfs_boot: my_mask=255.255.255.0
nfs_boot: gateway=192.168.17.1
root on 192.168.17.4:/export/bondi
root file system type: nfs