[OpenBIOS] [Qemu-ppc] Changing CD-ROM path
Amadeusz Sławiński
amade at asmblr.net
Sat Jun 22 21:37:05 CEST 2013
On Sat, Jun 22, 2013 at 03:21:50PM -0400, Programmingkid wrote:
>
> On Jun 22, 2013, at 3:09 PM, Alexander Graf wrote:
>
> >
> > On 22.06.2013, at 21:04, Programmingkid wrote:
> >
> >>
> >> On Jun 22, 2013, at 2:05 PM, Alexander Graf wrote:
> >>
> >>>
> >>> On 22.06.2013, at 19:53, Programmingkid wrote:
> >>>
> >>>>
> >>>> On Jun 22, 2013, at 1:27 PM, Alexander Graf wrote:
> >>>>
> >>>>>
> >>>>> On 22.06.2013, at 18:50, Programmingkid wrote:
> >>>>>
> >>>>>> Mac OS 10.2 requires the boot CD-ROM to be located here: /pci/mac-io/ide at 1000/@0:9. It is currently located here: /pci at 80000000/pci-ata at 4/ata-2 at 500/cdrom at 0. How would I go about changing the CD-ROM to this location? I'm looking for a specific file or files to make this change.
> >>>>>
> >>>>> This is an OF path, which is up to OpenBIOS to construct.
> >>>>>
> >>>>> What makes you think that Mac OS searches at that exact location?
> >>>>>
> >>>>>
> >>>>> Alex
> >>>>>
> >>>>
> >>>> XNU (Mac OS X's kernel) prints this line to the screen:
> >>>> From path: “ide1/@0:9,\mach_kernel”, Waiting on <dict ID=”0”><key>IOPathMatch</key><string ID=”1”>IODeviceTree:/pci/mac-io/ide at 1000/@0:9</string></dict>
> >>>>
> >>>> The key IOPathMatch means the location of the cdrom has to be at a certain location. In this case it is /pci/mac-io/ide at 1000/@0:9.
> >>>
> >>> Yes, but I don't see where Mac OS X has this hardcoded. It gets passed in somehow.
> >>
> >> I think a kernel extension does it. I don't know which one.
> >
> > Well, I've tried to grep through the full file system of the 10.2 ISO and don't find anything that would indicate the path above. It has to come from somewhere ...
> >
> >>
> >>>
> >>> What machine type is this? g3beige?
> >>
> >> g3beige.
> >>
> >>> On there, I don't see an ide1 alias anywhere:
> >>>
> >>> 0 > dev /aliases ok
> >>> 0 > ls
> >>> ok
> >>> 0 > .properties
> >>> name "aliases"
> >>> screen "/pci at 80000000/mac-io at 3/escc/ch-b"
> >>> mac-io "/pci at 80000000/mac-io at 3"
> >>> via-cuda "/pci at 80000000/mac-io at 3/via-cuda"
> >>> adb-keyboard "/pci at 80000000/mac-io at 3/via-cuda/adb/keyboard"
> >>> adb-mouse "/pci at 80000000/mac-io at 3/via-cuda/adb/mouse"
> >>> rtc "/pci at 80000000/mac-io at 3/via-cuda/rtc"
> >>> nvram "/pci at 80000000/mac-io at 3/nvram"
> >>> ttya "/pci at 80000000/mac-io at 3/escc/ch-a"
> >>> scca "/pci at 80000000/mac-io at 3/escc/ch-a"
> >>> ttyb "/pci at 80000000/mac-io at 3/escc/ch-b"
> >>> sccb "/pci at 80000000/mac-io at 3/escc/ch-b"
> >>> ide0 "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
> >>> cd "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
> >>> cdrom "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
> >>> keyboard "/pci at 80000000/mac-io at 3/via-cuda at 16000/adb/keyboard at 8"
> >>> ok
> >>>
> >>> Somehow Mac OS resolves "ide1" into "/pci/mac-io/ide at 1000". That's the part where the logic fails.
> >>
> >> Do you think adding ide1 to the /aliases node will fix things? I guessing ide1 should equal ide0. The problem I see with this plan is the pci-ata node. A real Beige G3 doesn't have one in that path.
> >
> > I think it's worth a try. It looks almost as if ide0 is a misnomer and it really should be ide1 there. Not sure.
> Ok. I will try it.
>
> >
> > How do you enable verbose boot in bootx?
> >
>
> Hold down the command key and v while starting up.
Paths also depend on how you pass boot device:
For example with
-drive file=/path/to/cdrom.iso,media=cdrom,index=0,if=ide
I get
ide0 "/pci at 80000000/mac-io at 3/ata-1/cdrom"
cd "/pci at 80000000/mac-io at 3/ata-1/cdrom"
cdrom "/pci at 80000000/mac-io at 3/ata-1/cdrom"
ide1 "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
(also now that I look at it should this ide1 even be here?)
and with -cdrom /path/to/cdrom.iso
ide0 "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
cdrom "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
cd "/pci at 80000000/pci-ata at 4/ata-2/cdrom"
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