[yocto] TARGET_FPU for mpc8315e-rdb listed as SPE??

[Kumar Gala]

On Nov 10, 2010, at 8:23 AM, Bruce Ashfield wrote:

> On 10-11-10 09:11 AM, Kumar Gala wrote:
>> 
>> On Nov 10, 2010, at 7:58 AM, Bruce Ashfield wrote:
>> 
>>> On 10-11-10 08:38 AM, Bruce Ashfield wrote:
>>>> On 10-11-10 01:46 AM, Kumar Gala wrote:
>>>>> Why does the meta/conf/machine/mpc8315e-rdb.conf list TARGET_FPU as
>>>>> SPE. This isn't correct for an MPC8313 SoC.
>>>> 
>>>> It isn't used at the moment, so we can safely
>>>> ignore this.
>>>> 
>>>> It was a hold over from when I initially created
>>>> the BSP, and I've since changed it locally, but
>>>> haven't sent the updated BSP yet.
>>> 
>>> To clarify on this point, the kernel configuration
>>> is NOT using SPE for this, and I was attempting to
>>> use the FPU setting to trigger some different gcc
>>> flags during development the base of that test was
>>> an e500 board, so the SPE setting leaked in, but is
>>> unused.
>>> 
>>> At the moment, it is actually using soft-float, and
>>> I had planned to submit a change to clarify that.
>>> 
>>> If there's another option, let me know and I'll
>>> rebase my patches and change it again.
>> 
>> We should NOT be using soft-float for mpc8315e (it has HW floating point on this chip).
> 
> Indeed. I fell back to a safe multilib. I'm willing
> to try again and see if the gcc bootstrap phases will
> build.
> 
> The kernel was fine, and is fine, it was userspace
> that caused problems for me .. and that's definitely not
> an area where my expertise lies :)
> 
> I needed something that worked, and had to excplicitly
> chose to ignore the FPU temporarily, but revisiting that
> now seems like a good idea.
> 
>> 
>> Any plans to get an e500 based system going before the rev1.0 release?
> 
> We've got tonnes of experience and BSPs to draw from
> here. The selection of some of these BSPs was (largely)
> based on cost and availability. If we can get our
> hands on a suitable e500 replacement .. the switch is
> trivial.

If we can get a toolchain and basic build I'm happy to help on the HW side and getting kernel, etc worked out.

I'd like to get a semi-generic setup going for an e500v2 based system.

- k