[OpenBIOS] [RFC] Make BootX from Mac OS X 10.4 work

[Laurent Vivier]

>
>On 10.08.2009, at 00:51, Laurent Vivier wrote:
>
>> Le jeudi 30 juillet 2009 à 18:00 +0200, Alexander Graf a écrit :
>>> Using this patch stacked on Steven Noonan's I was able to make  
>>> BootX from
>>> Mac OS X 10.4 load XNU successfully in qemu-system-ppc.
>>
>> Hi,
>>
>> I'd like to play with that.
>>
>> Which patches to apply before ?
>
>I took those rebased on current git:
>
>http://github.com/tycho/openbios/tree/macosx-boot
>
>> How to boot ?
>
>The normal way. Just use -boot d. So far only the 10.4 CD did boot IIRC.
>
>Alex
>
>>
>> Regards,
>> Laurent
>>
>>> Unfortunately, most of this patch is nothing but a mere hack to  
>>> find out
>>> what we really need to get this working.
>>>
>>> Also I didn't manage to get anything but 10.4 running. Other  
>>> versions broke
>>> in the partition table interpretation.
>>>
>>> I would not feel good taking the patch as is, because it would be  
>>> better to
>>> implement the correct Forth magic to make the real callbacks work.  
>>> Here is
>>> what I found to be broken:
>>>
>>>  - unselect-dev is missing
>>>  - local variables don't work ({ ... })
>>>  - I ran into an endless loop, getting isi and dsi faults on the  
>>> same 2
>>>    addresses all the time
>>>
>>> Also, Qemu's only usable Desktop PPC target is a G3 Beige which is  
>>> only
>>> supported up to 10.2.8 IIRC. So even getting the bootloader running  
>>> for
>>> 10.4 didn't exactly buy me much.
>>>
>>> Don't apply the patch as is!
>>> It'd be great to see someone build on this!
>>> ---
>>> arch/ppc/qemu/ofmem.c |    4 ++--
>>> modules/client.c      |   40 ++++++++++++++++++++++++++++++++++++++++
>>> 2 files changed, 42 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/ppc/qemu/ofmem.c b/arch/ppc/qemu/ofmem.c
>>> index a1a8fb1..32642e2 100644
>>> --- a/arch/ppc/qemu/ofmem.c
>>> +++ b/arch/ppc/qemu/ofmem.c
>>> @@ -716,8 +716,8 @@ hash_page_32( ulong ea, ulong phys, int mode )
>>>
>>> 	/* out of slots, just evict one */
>>> 	if( !found ) {
>>> -		i = next_grab_slot + 1;
>>> -		next_grab_slot = (next_grab_slot + 1) % 8;
>>> +		i = next_grab_slot + 3;
>>> +		next_grab_slot = (next_grab_slot + 3) % 8;
>>> 	}
>>> 	i--;
>>> 	upte[i*2] = cmp;
>>> diff --git a/modules/client.c b/modules/client.c
>>> index a2e8405..a8c89ff 100644
>>> --- a/modules/client.c
>>> +++ b/modules/client.c
>>> @@ -49,6 +49,46 @@ handle_calls( prom_args_t *pb )
>>>                pb->nargs, pb->nret);
>>> #endif
>>>
>>> +#if 1
>>> +	if (!strcmp(pb->service, "interpret"))
>>> +	{
>>> +		char *ns;
>>> +
>>> +		ns = strstr((char*)pb->args[0], "{ ; dpth }");
>>> +		if (ns) return 0;
>>> +
>>> +		ns = strstr((char*)pb->args[0], "dev /chosen ");
>>> +		if (ns) memcpy(ns, " \" /chosen\"", 11);
>>> +	}
>>> +	else if (!strcmp(pb->service, "call-method"))
>>> +	{
>>> +		if (!strncmp((char*)pb->args[0], "slw_init_keymap", 15)) {
>>> +
>>> +			char *a = (char*)malloc(20);
>>> +			memset(a, 0x00, 20);
>>> +			pb->args[4] = (uint32_t)a;
>>> +			pb->args[3] = 0;
>>> +
>>> +			return 0;
>>> +		}
>>> +		if (!strncmp((char*)pb->args[0], "slw_emit",  
>>> strlen("slw_emit"))) {
>>> +		        PUSH( (char)pb->args[2] );
>>> +		        fword("emit");
>>> +
>>> +			return 0;
>>> +		}
>>> +		if (!strncmp((char*)pb->args[0], "slw_cr", strlen("slw_cr"))) {
>>> +		        PUSH( '\n' );
>>> +		        fword("emit");
>>> +			return 0;
>>> +		}
>>> +		if (!strncmp((char*)pb->args[0], "slw_update_keymap",  
>>> strlen("slw_update_keymap"))) return 0;
>>> +		if (!strncmp((char*)pb->args[0], "slw_set_output_level",  
>>> strlen("slw_set_output_level"))) return 0;
>>> +		if (!strncmp((char*)pb->args[0], "slw_spin_init",  
>>> strlen("slw_spin_init"))) return 0;
>>> +		if (!strncmp((char*)pb->args[0], "slw_spin",  
>>> strlen("slw_spin"))) return 0;
>>> +	}
>>> +#endif
>>> +
>>> 	for( i=pb->nargs-1; i>=0; i-- )
>>> 		PUSH( pb->args[i] );
>>>
>>> -- 
>>> 1.6.0.2
>>>
>>>
>> -- 
>> --------------------- laurent at vivier.eu ----------------------
>> "Tout ce qui est impossible reste à accomplir"    Jules Verne
>> "Things are only impossible until they're not" Jean-Luc Picard
>>
>>
>> -- 
>> OpenBIOS                 http://openbios.org/
>> Mailinglist:  http://lists.openbios.org/mailman/listinfo
>> Free your System - May the Forth be with you
>
>
>-- 
>OpenBIOS                 http://openbios.org/
>Mailinglist:  http://lists.openbios.org/mailman/listinfo
>Free your System - May the Forth be with you



-- 
--------------------- Laurent at vivier.eu  ---------------------
"Tout ce qui est impossible reste à accomplir"    Jules Verne
"Things are only impossible until they're not" Jean-Luc Picard