knath wrote:
> Has anyone used with winarm/GCC tools and/or OpenOCD for debuuging for
> Cirrus EP93xx processor.

The gcc supports this processors. There is even an extra cpu-type
-mcpu=ep9312 (see gcc manual). I don't know much about the Cirrus
controllers but there is a "multilib"-option to enable a special set of
libs for this family. IRC there is something about a unusual combination
of ARM-core and floating-point-handling and special instructions with
them. In WinARM-20060606 this multilib-option is NOT enabled. I have
once made a Toolchain with this option enabled which you might be used
for a test:
http://www.siwawi.arubi.uni-kl.de/avr_projects/arm_projects/WinARM-20060321__.zip
. If there is public demand I can include the multilib-option when
building for the next package. I'd like to avoid this since this will
increase the package size by serveral MBytes. I can also create a
special binaries-collection with for you. If you are interested send an
e-mail to mthomas (at) rhrk (dot) uni-kl (dot) de. If you plan to build
your own binaries see the file t-arm-elf in the gcc-sources.

Martin Thomas

Dominic Rath wrote:
> Hi,
>
> Martin Thomas wrote:
>> knath wrote:
>>> Has anyone used with winarm/GCC tools and/or OpenOCD for debuuging for
>>> Cirrus EP93xx processor.
>>
> Yes, I've successfully used the OpenOCD with a CS-EP9301 board from
> Olimex. Access to the MaverickCrunch register is not supported.
>
>> The gcc supports this processors. There is even an extra cpu-type
>> -mcpu=ep9312 (see gcc manual). I don't know much about the Cirrus
>> controllers but there is a "multilib"-option to enable a special set of
>> libs for this family. IRC there is something about a unusual combination
>> of ARM-core and floating-point-handling and special instructions with
>> them.
>
> The EP93xx controllers (except for the EP9301) contain a floating point
> coprocessor called MaverickCrunch. It isn't compatible to the ARM VFP
> and has its own (coprocessor)-opcodes. The cpu-type 'ep9312' has to be
> selected if a workaround for a bug in the Maverick unit found on these
> chips should be enabled. You'll have to consult the erratasheet of your
> particular uC and revision to see if you're affected.
>

Thanks to you both gentlemen for your replies and suggestions. My next
step is to get the board.

--Kanak

Hi,
I'm just beginning to work with the CS - E9301 from Olimex, but that's
making me crazy because I don't know where to begin, and I have a big
problem because I don't know nothing about Linux or GNU tools.

I'm gonna receive the board in some days, but I have too many
doubts...I have read some pdf about ARM and GCC, and I have installed
cygwin in my PC, but I need get some to begin, for example:

* How this board is programmed? I mean, what I need to program it?
* this has be programmed in Asssembler, or in C++?

There are more doubts but I think I have to solve this first.

I would really thank if anyone could help me.

Thanks.

Ing. Dairo Ortiz.
Bogotá, Colombia.