[ECOS] ethernet driver for eCos

[ECOS] ethernet driver for eCos

[Dileep Kumar]

Hi All,
Could you please tell me what are the things to taken into account
while writting a code for ethernet driver,
the underlying processor is MPC8555 and the board is  WiMAX.
Is the code is different for different board and different processor.?

Thanks
Dileep Kumar T

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[ECOS] Re: ethernet driver for eCos

[Grant Edwards]

On 2008-01-28, Dileep Kumar <dileepkumart@gmail.com> wrote:

> Could you please tell me what are the things to taken into account
> while writting a code for ethernet driver,

1) The API of the Ethernet controller HW.

2) The API of the network stack.

> the underlying processor is MPC8555 and the board is WiMAX. Is
> the code is different for different board

Sometimes.

> and different processor?

Not if it's done right.

-- 
Grant Edwards                   grante             Yow! I am a traffic light,
                                  at               and Alan Ginzberg kidnapped
                               visi.com            my laundry in 1927!


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Re: [ECOS] ethernet driver for eCos

[Gary Thomas]

Dileep Kumar wrote:
> Hi All,
> Could you please tell me what are the things to taken into account
> while writting a code for ethernet driver,
> the underlying processor is MPC8555 and the board is  WiMAX.
> Is the code is different for different board and different processor.?
>   
First of all, the 8555 uses FreeScale's TSEC (Triple Speed Ethernet 
Controller) which is
completely different from any of the network drivers in the public CVS.  
Writing such
a driver is not special for the architecture, per se, but rather so for 
the device itself.

You'll also need a PowerPC HAL for the 85xx series of CPU chips.  This 
is also not
in the public CVS and is radically different from any that are (you 
asked privately
about starting from the 8260 code - the 82xx and 85xx are pretty far 
apart and you'll
end up writing most everything over anyway)

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


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Re: [ECOS] ethernet driver for eCos

[Gary Thomas]

Please keep your replies on the mailing list so that all benefit.

Dileep Kumar wrote:
> Hi ,
> Could you please tell me which processor I should take as baseline
> in order to port eCos on MPC8555.

Sorry, but there is no appropriate HAL in the public tree.

> On 1/28/08, Gary Thomas <gary@mlbassoc.com> wrote:
>> Dileep Kumar wrote:
>>> Hi All,
>>> Could you please tell me what are the things to taken into account
>>> while writting a code for ethernet driver,
>>> the underlying processor is MPC8555 and the board is  WiMAX.
>>> Is the code is different for different board and different processor.?
>>>
>> First of all, the 8555 uses FreeScale's TSEC (Triple Speed Ethernet
>> Controller) which is
>> completely different from any of the network drivers in the public CVS.
>> Writing such
>> a driver is not special for the architecture, per se, but rather so for
>> the device itself.
>>
>> You'll also need a PowerPC HAL for the 85xx series of CPU chips.  This
>> is also not
>> in the public CVS and is radically different from any that are (you
>> asked privately
>> about starting from the 8260 code - the 82xx and 85xx are pretty far
>> apart and you'll
>> end up writing most everything over anyway)

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

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