[Qemu-devel] Re: OBP under qemu-system-sparc64

[Artyom Tarasenko <atar4qemu@googlemail.com>]

2010/4/14 Blue Swirl <blauwirbel@gmail.com>:
> On 4/14/10, Artyom Tarasenko <atar4qemu@googlemail.com> wrote:
>> 2010/4/14 Artyom Tarasenko <atar4qemu@googlemail.com>:
>>
>> > 2010/4/3 Blue Swirl <blauwirbel@gmail.com>:
>>  >> could be interesting to see what OBP
>>  >> from a real machine would think of the QEMU machine.
>>  >
>>  > it doesn't live long enough to think something (must be something trivial):
>>  >
>>  > $ sparc64-softmmu/qemu-system-sparc64 -bios u1_v3.11.1.bin -nographic
>>  > -cpu 'TI UltraSparc I' -d in_asm,int,cpu
>>  > --------------
>>  > IN:
>>  > 0x000001fff0000020:  ldxa  [ %g0 ] (69), %g2
>>  > 0x000001fff0000024:  stxa  %g0, [ %g0 ] (69)
>>  > 0x000001fff0000028:  b,a   0x1fff0001d88
>>  >
>>  > --------------
>>  > IN:
>>  > 0x000001fff0001d88:  rdpr  %cwp, %g1
>>  > 0x000001fff0001d8c:  wrpr  0, %cwp
>>  > 0x000001fff0001d90:  wrpr  %g1, 0, %cwp
>>  > 0x000001fff0001d94:  call  0x1fff0000210
>>  > 0x000001fff0001d98:  add  %g0, %g0, %o0
>>  >
>>  > --------------
>>  > IN:
>>  > 0x000001fff0000210:  mov  0x1ff, %o1    ! 0x1ff
>>  > 0x000001fff0000214:  sllx  %o1, 0x20, %o1
>>  > 0x000001fff0000218:  sethi  %hi(0xf1300000), %o2
>>  > 0x000001fff000021c:  or  %o2, %o1, %o2
>>  > 0x000001fff0000220:  stba  %o0, [ %o2 ] (21)
>>
>>
>> and on the real machine there seems to be some device connected to this address:
>>  ok 1fff1300000 bypass-asi spacel@ .
>>  Data Access Error
>>  ok cpu-afsr@ .
>>  104000000
>>  ok 1fff1300000 bypass-asi spacel@ .
>>  Data Access Error
>>  ok cpu-afar@ . cpu-afsr@ .
>>  1fff1300000 104000000
>>  But, with single bytes it works:
>>  ok 1fff1300000 bypass-asi spacec@ .
>>  64
>>  ok 1fff1300001 bypass-asi spacec@ .
>>  64
>>  ok 1fff1300002 bypass-asi spacec@ .
>>  64
>>  ok 1fff1300003 bypass-asi spacec@ .
>>  64
>>
>>  If I put pseudodevices there it still doesn't get too far:
>>  #### skip unassigned mem access to 000001fff1300000
>>  #### skip unassigned mem access to 000001fff1300004
>>  #### skip unassigned mem access to 000001fff1300005
>>  #### skip unassigned mem access to 000001fff1300006
>>  #### skip unassigned mem access to 000001fff1300007
>
> It's this device:
>            model:  'SUNW,sc-up'
>            reg:  0000000f.01300000.00000008
>            name:  'sc'

thought about it, but it says xx08, and OBP tries xx00+

>>  #### skip unassigned mem access to 000001fff1900000
>
>            address:  fffb6000
>            reg:  0000000f.01900000.00000001
>            name:  'auxio'
>
>>  #### skip unassigned mem access to 000001fff1100004
>
>            device_type:  'serial'
>            reg:  0000000f.01100000.00000004
>            name:  'zs'
>
>>  #### skip unassigned mem access to 000001fff1100004
>>  #### skip unassigned mem access to 000001fff1100000
>>  #### skip unassigned mem access to 000001fff1300007
>>  #### skip unassigned mem access to 000001fff1200001
>
>            reg:  0000000f.01200000.00002000
>            model:  'mk48t59'
>            name:  'eeprom'
>
> Zilog serial (escc) and m48t59 are already implemented.

Yes, but I thought they are also already wired.
I'll create one more hwdef entry then.

On the other hand I see
.console_serial_base = 0
. Do we want to keep this setting? How does it work under OpenBIOS?

-- 
Regards,
Artyom Tarasenko

solaris/sparc under qemu blog: http://tyom.blogspot.com/