Re: [Qemu-devel] [PATCH 0/3] ppc: complete the new HV mode

[Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>]

On 07/06/16 08:04, Cédric Le Goater wrote:

>>>> 2. I have an old ibook G4 from which I dd'ed the disk. openbios 
>>>>    complains for some invalid state. is that supported ?
>>
>> Yes, OpenBIOS should boot most things these days (MorphOS is the only
>> execption I know of where the bootloader won't execute correctly as it
>> assumes real mode). The above message means that OpenBIOS couldn't find
>> a bootloader, or it could but was unable to execute it, e.g. due to
>> incompatible architecture - which OS is your image running? 
> 
> I am pretty sure it is a Mac OS X v10.5. I still have the hardware but it
> is running Linux now : 
> 
> # cat /proc/cpuinfo 
> processor	: 0
> cpu		: 7447A, altivec supported
> clock		: 1333.333000MHz
> revision	: 1.5 (pvr 8003 0105)
> bogomips	: 36.86
> 
> total bogomips	: 36.86
> timebase	: 18432000
> platform	: PowerMac
> model		: PowerBook6,7
> machine		: PowerBook6,7
> motherboard	: PowerBook6,7 MacRISC3 Power Macintosh 
> detected as	: 287 (iBook G4)
> pmac flags	: 0000001a
> L2 cache	: 512K unified
> pmac-generation	: NewWorld
> Memory		: 1024 MB
> 
> # lsprop  /proc/device-tree/rom@ff800000/boot-rom@fff00000/
> reg              fff00000 00100000
> info             fff00000 00003f00 000493f0 20050705
> 		 815fda85 fff08000 00078001 000493f0
> 		 20050705 23765c6c fff80000 00080002
> 		 000493f0 20050705 b3364dca fff03f00
> 		 00000083 000493f0 20050705 c2b72d61
> 		 fff03f80 00000084 e24a68ca 15a82001
> 		 ffffffff fff04000 00004005 6e767261
> 		 6d000000 00000000 00000000 00000000
> 		 [140 bytes total]
> name             "boot-rom"
> security-modes   6e6f6e65 2c206675 6c6c2c20 636f6d6d
> 		 616e642c 206e6f2d 70617373 776f7264
> image            00080000 (524288)
> model            "Apple PowerBook6,7 4.9.3f0 BootROM built on 07/05/05 at 11:14:11"
> write-characteristic
> 		 "flash"
> hwi-flags        402a1220 (1076498976)
> BootROM-version  "$0004.93f0"
> BootROM-build-date
> 		 "07/05/05 at 11:14:11"
> linux,phandle    ff89cb08
> has-config-block
> 
> 
>> Have you tried both mac99 and g3beige machines?
> 
> yes.

(I'm wondering if we should start a new thread here either just on
qemu-ppc or over on the OpenBIOS list)

OpenBIOS will read hfs/hfsplus filesystems fine - I wonder if maybe it
can't locate a suitable partition in the Apple Partition Map?

If you boot to the Forth prompt with -prom-env 'auto-boot?=false' can
you try the following to see if you can list the disk contents:

dir hd:,\

If that doesn't work it means that the partition auto-detection is
failing, so try manually forcing the partition number until you find one
that works e.g.

dir hd:0,\
dir hd:1,\
etc.

up until around partition 10? Once you find one that works it should be
possible to boot that partition directly e.g.

boot hd:1


ATB,

Mark.