[Qemu-devel] Re: [OpenBIOS] QEMU OpenBIOS booting?

[Alexander Graf]

On 20.04.2009, at 05:50, Steven Noonan wrote:

> On Sun, Apr 19, 2009 at 8:27 PM, Steven Noonan  
> <address@hidden> wrote:
> > So I decided a better idea was to keep the OpenBIOS ROM where it is
> > and then instead use the location 0x06800000 for the memory
> > allocations so that the 0x4000 block doesn't get smashed. It was far
> > more feasible than moving where the ROM is stored, and I don't think
> > anything cares about the contents of 0x06800000 to 06FFFFFF anyway.
> >
> > Also, the reason I was getting "invalid opcode" was because Open
> > Hack'Ware's XCOFF loader didn't take into account some other unknown
> > variable which PearPC accounted for. I added the necessary code to
> > make that work.
> >
> > So now instead of an invalid opcode, we get this (which I don't know
> > how to debug. it looks like a Forth exception):
> >
> > Alcarin:qemu steven$ make -C ppc-softmmu &&
> > ppc-softmmu/qemu-system-ppc -L pc-bios -cdrom
> > ~/Development/MacOSX-10.4.iso -boot d -M mac99 -nographic
> > make: Nothing to be done for `all'.
> >
> > > > =============================================================
> > > > OpenBIOS 1.0 [Apr 20 2009 03:23]
> > > > Configuration device id QEMU version 1 machine id 1
> > > > CPUs: 1
> > > > Memory: 128M
> > > > UUID: 00000000-0000-0000-0000-000000000000
> > > > CPU type PowerPC,G4
> > Welcome to OpenBIOS v1.0 built on Apr 20 2009 03:23
> >
> > > > YABOOT - yaboot_startup: Entering boot, no path
> > > > CHRP - try_chrp_script: Trying cd:0,ppc\bootinfo.txt
> > > > MAC-PARTS: macparts_probe 4552 ?= 4552
> > > > MAC-PARTS: macparts_open 0
> > > > MAC-PARTS: macparts_get_info 0 2832209920
> > > > MAC-PARTS: macparts_block_size = 200
> > > > ELF - try_chrp_script: Can't open cd:0,ppc\bootinfo.txt
> > > > CHRP - try_chrp_script: Trying cd:0,System\Library\CoreServices 
> > > > \BootX
> > > > MAC-PARTS: macparts_probe 4552 ?= 4552
> > > > MAC-PARTS: macparts_open 0
> > > > MAC-PARTS: macparts_get_info 0 2832209920
> > > > MAC-PARTS: macparts_block_size = 200
> > > > CHRP - try_chrp_script: got bootscript
> > > > load-base
> > > > begin
> > > >  dup 6 " &lt;/CHRP" $= if
> > > >   6 + dup 6 " -BOOT&gt;" $= if
> > > >    8 + true
> > > >   else
> > > >    false
> > > >   then
> > > >  else
> > > >   1+ false
> > > >  then
> > > > until
> > > > ( xcoff-base )
> > > > load-size over load-base - -
> > > > ( xcoff-base xcoff-size )
> > > > load-base swap move
> > > > init-program go
> >
> > > > ELF - encode_bootpath: bootpath cd:0,<NULL>\ bootargs <NULL>
> > $=:>> XCOFF - load_xcoff: Loading 'System\Library\CoreServices\BootX'
> > > > XCOFF - load_xcoff: XCOFF file with 3 sections entry:05616ecc
> > > > XCOFF - load_xcoff: Read next header (5c)
> > > > XCOFF - load_xcoff: Load '.text' section from 5c d4 to 5600000  
> > > > (28000)
> > > > XCOFF - load_xcoff: Found entry point offset in '.text': 94112
> > > > XCOFF - load_xcoff: Read next header (84)
> > > > XCOFF - load_xcoff: Load '.data' section from 84 280d4 to 5628000  
> > > > (2000)
> > > > XCOFF - load_xcoff: Read next header (ac)
> > > > XCOFF - load_xcoff: Erase '.bss' section at 562a000 size: 3a000
> > > > XCOFF - load_xcoff: Found actual entry point: 05600adc
> > > > ELF - transfer_control_to_elf: Starting ELF boot loader
> > unselect-dev:interpret: exception -13 caught
> > EXIT
> > 0 > Killed
> >
> > Any ideas?
>
> Also, my most recent changes are committed and pushed for public  
> viewing:
> http://github.com/tycho/openbios/commits/macosx-boot

Wow - I just returned from vacation and that's what I found in my  
inbox! What a nice surprise. This fits along really well with my  
efforts to get KVM running on POWER ;-).

So - have you made any progress since then?

Alex