[OpenBIOS] [Qemu-ppc] Changing CD-ROM path

[Programmingkid]

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.