Re: [ts-7000] Re: New TS-7800 500MHZ ARM9 SBC

[Ronald Gomes <>]

Hi,

The Linux 2.6.12 kernel we are using for the first release has the preemptible-kernel and the ARM EABI options.
We have to meet some deadlines here in the design of the TS-7800 - we only have about one/two more months of development.Therefore we are likely going to stick with the 2.6.12 kernel initially. Although, we may consider newer versions in the future - the fact that support for the MV88F5182 might be added to the mainstream kernel tree would help a lot towards this.

Ronald.


charliem_1216 <> escreveu:

Hi --

--- In .com, Ronald Gomes <automatisarg@...>
wrote:
>
> Hello,
>
> The SOC used is the Marvel MV88F5182.
> I guess Orion was a beta name - Marvell now uses Feroceon.
> Its a Marvell improved version of the ARM926EJ spec.
> The kernel used in the first release will be version 2.6.12,
patched by Marvell and us to support the hardware.
>
> Ronald.
>

Really nice looking board guys ...

But I hope you consider releasing a later kernel; 2.6.12 is over two
years old already. Most of the cool arm stuff is much more recent:
HRT, tickless kernel, preempt, EABI (the biggie, appeared in 2.6.18
or .19 I believe), etc. EABI is really needed to get the best FP
out of the ARMs with linux. To put it in perspective, this massive
hardware change brings 3X performance, but (for FP users) EABI &
softfloat bring 12X performance increase with no HW change.

There's a group of people porting current linux kernels to the
Buffalo LinkStation NAS boxes & clones (also Marvell Orion-1,
88F4182(?), with AVR, looks very close to the TS-7800). They
haven't gotten any help from Marvell though ... but most stuff is
working I think. [Even Buffalo shipped a 2.6.16 kernel, and that
was last September ...]

Good news though is that Tzachi Perelstein from Marvell has released
patches for basic support of the MV88F5281 (Orion-2) in current
upstream kernels, and support for the MV88F5182 (Orion-NAS) is next
in the pipeline.

I see that the 88F5281 has a VFP unit; does the 88F5182 have one
too? I guess not if the chip targets NAS rather than media
processing. And who named these chips anyway? .... Dyslexics will
be lost :)

Hope this doesn't sound too negative; it's great to see you moving
to 2.6. And you asked for comments .... :)

Regards, ........ Charlie

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