Re: [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] );