Re: powerpc 476, Little-endian, pte fault

[Santosh Kumar]

I have attached the patch with only the relevant changes.

The patch is not based on uLIBC patch.

Glibc doesnt support little endian for PPC, but after minor changes to
makefile i got it working. With the compiler i am using i could get
2.6.31 on ppc440 working. I am using the same compiler as 476 & 440
instruction is almost the same.

Thanks
Santosh Kumar .A

Vision without Action is a daydream... Action without Vision is a nightmare...



On 31 October 2011 16:53, Benjamin Herrenschmidt
<benh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, 2011-10-31 at 20:49 +1100, Michael Neuling wrote:
>> > I have built a cross compiler for ppc440 in little endian mode and
>> > using it to build the kernel.
>> >
>> > Yes i am running Linux in Little-Endian. This is the first user space
>> > process. I wrote the below program and running it as init from
>> > /sbin/init. I have also set the permissions with chmod +s.
>> >
>> > main()
>> > {
>> >
>> > while(1){
>> > printf("hello world");
>> > sleep(1);
>> >  }
>> > }
>>
>> Does libc even support little endian on PPC?
>
> Ian did a port a while back for uClibc, is that at least partially based
> on it ?
>
>> > I have attached the patch.
>>
>> This is a pretty huge patch:
>>
>>  115 files changed, 44479 insertions(+), 7398 deletions(-)
>>
>> It seems to include a new platform as well as a bunch of unrelated junk.
>>
>> I suggest you need to break this down into something more digestible.
>> Like remove all the junk in the patch.  Then add the support for the new
>> platform (invader? platform).  Then start looking at little endian.
>> Unless you do this, it's unlikely anyone here is going to be able to
>> help.
>>
>> When you get to the little endian work, you might want to take a look at
>> this patch series from Ian Munsie:
>>
>> http://lists.ozlabs.org/pipermail/linuxppc-dev/2010-October/086165.html
>
> Right, the new patch should be if possible based on Ian's series or at
> least a cleaned / rebased variant of it. Then split in bits so we can
> review it properly.
>
> Cheers,
> Ben.
>
>> Mikey
>> _______________________________________________
>> Linuxppc-dev mailing list
>> Linuxppc-dev@xxxxxxxxxxxxxxxx
>> https://lists.ozlabs.org/listinfo/linuxppc-dev
>
>
>

Attachment: linux_ppc_476.patch
Description: Binary data