[OpenBIOS] [PATCH] ppc: force target CPU

Laurent Vivier laurent at vivier.eu
Mon Jan 25 15:31:37 CET 2016

Le 22/01/2016 16:26, Mark Cave-Ayland a écrit :
> On 22/01/16 15:05, Andreas Färber wrote:
>> Am 22.01.2016 um 14:59 schrieb Mark Cave-Ayland:
>>> On 20/01/16 08:33, Laurent Vivier wrote:
>>>> Le 19/01/2016 21:33, Mark Cave-Ayland a écrit :
>>>>> Great! If we go with Segher's suggestion for 64-bit then we end up with
>>>>> this:
>>>>> 32-bit: -mcpu=604
>>>>> 64-bit: -mcpu=970 -mno-altivec
>>>> I think you can use "-mcpu=power4" here, this is the old default value
>>>> for gcc.
>>> It seems they are effectively the same, so I don't have any strong
>>> preference either way.
>> I prefer Mark's explicit variant, ideally with some explanatory comment.
> Thanks Andreas! Laurent, can you resubmit accordingly with a brief
> comment for each summarising why these flags have been chosen?

I can, but I'm not able to build openbios for target ppc64 on ppc64 host.

Is this normal ?

$ ./config/scripts/switch-arch ppc64
Configuring OpenBIOS on ppc64 for ppc64
Initializing build tree /home/laurent/Projects/openbios/obj-ppc64...ok.
Creating target config.mak...ok.
Creating target rules.mak...ok.
Creating config files...ok.
[laurent at pmacg5-1 openbios]$ make
Building OpenBIOS for ppc64
 HOSTCC host/kernel/dict.o
 HOSTCC host/kernel/bootstrap.o
 HOSTCC host/kernel/forth.o
 HOSTCC host/kernel/stack.o
 HOSTCC forthstrap
  GEN   bootstrap.dict
panic: segmentation violation at 0x87a1062c
dict=0x3fff87a10010 here=0x3fff87a10638(dict+0x628) pc=0x0(dict+0x785efff0)
dstackcnt=0 rstackcnt=0 instruction=deadbeef
dstack: 0x0
rstack: 0x0
Writing dictionary core file
rules.mak:69: recipe for target 'bootstrap.dict' failed
make[1]: *** [bootstrap.dict] Error 1
make[1]: Leaving directory '/home/laurent/Projects/openbios/obj-ppc64'
Makefile:19: recipe for target 'build' failed
make: *** [build] Error 1


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