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

[Alexander Graf]

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] );