[oe] [PATCH 1/6] Add support for the Technologic Systems TS7500 ARM SBCs

[R.T. McGee]

Its true, the FA526 is not a ARM920T but it's a bit different from other
standard ARMv4 types.

Comments about the FA526 and ARM920T similarity are based on work like this:
http://openocd.sourcearchive.com/lines/0.3.1/fa526_8c-source.html
This are not from the perspective of the instruction set, but it more or
less talking about hardware features.

In the upcoming versions of GCC there will be a mtune option for the FA526,
because it is different enough
from a old standard armv4 and there and some code optimizations for the
pipeline, cache  etc.
http://gcc.gnu.org/ml/gcc-patches/2010-11/msg02208/gcc-4.6-svn-20101116-faraday-cpu.patch

Just to recap for others, the TS-7500 has a Cavium CNS2132 (aka Star Semi
STR8132) SoC which contains a FA526 core.

Thanks,
RT


> From: Marcin Juszkiewicz <marcin <at> juszkiewicz.com.pl>
> Subject: Re: [oe] [PATCH 1/6] Add support for the Technologic Systems
> TS7500 ARM SBCs
> Date: 2011-03-30 14:43:36 GMT
>
> Dnia 2011-03-30, śro o godzinie 10:07 -0400, UDel V2G Team pisze:
> > +++ b/conf/machine/include/tune-fa526.inc
>
> > +# This core basically resembles a ARM920T but has NO thumb
> > interworking support
> > +# which makes it not fully EABI compliant
>
> This is not arm920t core. Vendor says "The cores are based on the ARMv4(tm)
> instruction set and AMBA(tm) 2.0 AHB bus architecture." There is no
> information on which core they based.
>
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