Andrew Lunn wrote:
> On Thu, Nov 06, 2008 at 09:23:28PM +0300, Evgeniy Dushistov wrote:
>> Hi,
>>
>> I want to see working ecos on at91sam9263ek board.
>> As far as I know, there is no freely available source code of ecos port on
>> this hardware, am I right? (I know about ecoscentric, but it is not
>> freely available).
>>
>> May be anybody is working on such kind of port?
>>
>> Right now I'm reading docs about cdl language, and stuck on which
>> variant to choose: create directory at91sam9 in
>> packages/hal/arm/arm9 and write hal package from scratch
>> or use packages/hal/arm/at91 stuff, at91sam9263ek is very similar
>> to at91sam7s,
I don't think it's that similar. At least, it seems similar at a
high-level, but differs in most of the details once you get into it. The
register layouts differ in many places between the SAM9 variants even. I
think you'd end up with huge amounts of ifdefs.
I recommend the former approach. If there is anything that can sensibly be
shared, perhaps it could be broken out into a separate package.
>> but
>> packages/hal/arm/at91/var/current/cdl/hal_arm_at91.cdl
>> contain things like "implements CYGINT_HAL_ARM_ARCH_ARM7",
>> may be someone, who has more experience than I (i.e. > 0) with ecos
>> configuration framework, could suggest which solution to choose?
>
> You could change this. Do something like
>
> cdl_option CYGHWR_HAL_ARM_AT91_ARM7 {
> display "ARM7 core"
> no_define
> calculated { is_substring("R40807 R40008 M42800A M55800A JTST
> AT91SAM7S", CYGHWR_HAL_ARM_AT91) }
> implements CYGINT_HAL_ARM_ARCH_ARM7
> }
>
> cdl_option CYGHWR_HAL_ARM_AT91_ARM9 {
> display "ARM9 core"
> no_define
> calculated { is_substring("AT91SAM9", CYGHWR_HAL_ARM_AT91) }
> implements CYGINT_HAL_ARM_ARCH_ARM9
> }
No need for that. If it's SAM9 then CYGPKG_HAL_ARM_ARM9 will have been
brought into the configuration courtesy of the ecos.db target template.
Jifl
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