[OpenBIOS] [PATCH] ppc: force target CPU

Programmingkid programmingkidx at gmail.com
Mon Jan 25 15:48:16 CET 2016


On Jan 25, 2016, at 9:31 AM, Laurent Vivier wrote:

> 
> 
> 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 ?

It definitely shouldn't be.

> 
> $ ./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
> Building...
> error:
> 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

What operating system are you using to build OpenBIOS on? 
Is your operating system 32 bit or 64 bit?
What version of GCC are you using? 


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