[ECOS] Re: Building eCos hello world

[Gary Thomas]

Grant Edwards wrote:
> In gmane.os.ecos.general, you wrote:
>> On 7/28/06, Grant Edwards <grante@visi.com> wrote:
>>> In gmane.os.ecos.general, you wrote:
>>>
>>>> Okay, I finally figured it out.  I wasn't aware of what
>>>> virtual vectors are used for.  I guess ecos applications makes
>>>> use of services provided by redboot.
>>> They can, if you configure them that way.
>> May I be further enlightened by your wisdom by telling me where this
>> configuration is, the default of which is to use services provided by
>> RedBoot.
> 
> Actually, I wasn't aware that was the default.  None of my apps
> use RedBoot services, and I don't remember ever having to
> change anything, but I may have just picked the right defaults
> when I created the HAL for my target platform.
> 
> Browsing through the ecos.ecc file, here are few likely
> settings:
> 
> turn off CYGSEM_HAL_VIRTUAL_VECTOR_INHERIT_CONSOLE
> turn on  CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_COMMS
> turn on  CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE 
> turn on  CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_DEFAULT

Probably the easiest (on those platforms that *do* have RedBoot)
is to make sure that CYGSEM_HAL_USE_ROM_MONITOR is disabled.

For PowerPC targets, I use the attached .ecm script.

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