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

Mark Cave-Ayland mark.cave-ayland at ilande.co.uk
Mon Jun 24 17:25:19 CEST 2013

On 22/06/13 22:47, Programmingkid wrote:

>> 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"
> Thank you sooo much for this information. With it was able to go further
> than before in the boot process! This day was definitely a step forward
> in making Mac OS X boot in QEMU. The Mac OS 10.2 cd stopped after the
> COLOR display text, but the darwin 8 cd was able to boot considerably
> further than before.
> Before I would only see up to this in on the screen:
> IOService:/GossamerPE/pci at 80000000/AppleGracklePCI/pci-ata at 4/CMD646Root/cdrom at 0

Hmmmm last time I tried I couldn't even get the IOService to match - 
maybe some of the recent IDE fixes in QEMU have got this to work?

> After using your command line suggestion, I see this in QEMU when
> booting Darwin 8 (core of Mac OS X):
> IOService:/GossamerPE/pci at 80000000/AppleGracklePCI/mac-io at 3/Heathrow/ata-1 at 20000/HeathrowATA/ATADeviceNub at 0/IOATAPIProtocolTransport/IOSCSIPeripheralDevieNub/IOSCSIPeripheralDeviceType05/IODVDServices/IODVDBlockStorageDriver/QEMU
> A lot more than before!

Excellent :)

> This is what I see on a real Beige G3:
> IOService:/GossamerPE/pci at 80000000/AppleGracklePCI/mac-io at 10/Heathrow/ide at 21000/HeathrowATA/ATADeviceNub at 0/ATAPIProtocolTransport/IOSCSIPeripheralDeviceNub/IOSCSIPeripheralDeviceType05/IODVDServices/IODVDBlockStorageDriver/HL-DT-ST
> DVD-RW GCA-4020B Media/IOCDPartitionScheme/Untitled
> 1 at 1/IOApplePartititionScheme/Mac_OS_X at 9
> So what's next is making the IOCDPartitionScheme show up.

Have you had a look at the Darwin source to see how this is actually 

> This path change definitely needs to be made to QEMU.

There seems to have been a lot to this thread over the weekend, however 
am I right in guessing that the primary change is switching the CDROM 
over from the CMD646 IDE bus to the MacIO IDE bus?

> If anyone wants to help but don't have Mac OS X, you can download the
> free Darwin 8 cd image here: darwinppc-801.cdr.gz
> <http://www.opensource.apple.com/static/iso/darwinppc-801.cdr.gz>.

Will this actually work? Last I remember from Alex was that the Mac 
device model generated by QEMU would only work with MacOS <= 10.3, and 
the release notes in the same directory indicate that 801 is equivalent 
to the kernel for MacOS 10.4. It's for this reason that I've been using 
darwinppc-602.cdr.gz for all my tests here.

Also Amadeusz, didn't you have some extra patches for -M mac99 Darwin 
boot that still need to be reviewed by Alex?



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