[U-Boot-Users] u-boot and NIOS dk 1s10 board

[Patrice Kadionik <kadionik@enseirb.fr>]

Hi Stephan and Scott;
I agree with you: with NIOS  all hardware and software are configurable...
u-boot should at least support the stander32 design. in fact this design 
is complete because it uses all the hardware ressource of the altera's 
board...I think u-boot must be based on this design. But we should make 
easily configurable the base address of all peripherals according to a 
specific user design.
I think it's the main reason that there's no uClinux port for NIOS 
because hardware is too configurable and to stuck to a particular 
configration...
Cheers and merci.
Pat.

Stephan Linz wrote:

>Hi Patric and Scott,
>
>Am Montag, 17. November 2003 19:40 schrieb Scott McNutt:
>  
>
>>Patrice,
>>
>>    
>>
>>>It works now...in fact, my reference design for STRATIX
>>>configuration was not similar to the IO mapping used by u-boot
>>>for NIOS... It works with the Altera's "standard 32"  reference
>>>design (with the .SREC in the CDKNIOS project and after
>>>u-boot recompilation too).
>>>      
>>>
>>Great news!
>>    
>>
>
>Congratulations!
>
>  
>
>>>My student will work on the u-boot APEX port...just an adaptation
>>>I think...I may be a good idea that the stratix 1S10 board appears
>>>as its own board and not as a cyclone board in the u-boot distro...
>>>      
>>>
>>I enthusiastically agree :-) It is not simply a good idea, but IMHO
>>*essential* that each Nios board have it's own u-boot configuration.
>>Since *everything* is configurable with Nios, it's very easy to create
>>a monster by having multiple board configs masquerading as one.
>>    
>>
>
>Yes, of course. We have to make different configuration files -- one for each 
>board. But, do we really need different board directories with almost the 
>same code in it?
>
>Ex.: My current Stratix patch is based on the Cyclone board, because both 
>boards are equal in context of u-boot basics need. Only the second serial i/f 
>differs (not needed til now). So there will be more identicalness than 
>differences for both boards.
>
>But note: this does not apply to the APEX board. The APEX board has different 
>Flash, less SRAM, only SODIMM SDRAM, no second seriel i/f (in standard32 
>case), no CF, less LEDs, and ... to many differences and it's right, for APEX 
>we should make a new board directory with it code inside.
>
>What's your opinion?
>
>FYIO: I plan to make an hardware overview for all known NIOS devkits by 
>Altera (APEX 20k200, Cyclone 1C20, Stratix 1S20 and 1S40).
>
>
>br,
>Stephan
> 
>  
>
>>U-Boot for Nios development kits should always support the
>>default "out-of-the-box" Nios configuration (for the altera boards,
>>this is typically the "standard 32" config). This is not intended to
>>limit creativity, but to avoid confusion and save time. Basically,
>>if new users get u-boot running quickly and easily, maintainers
>>and contributors will spend less time answering questions. And
>>this is a good thing for both the user and contributors :-)
>>
>>In general, support for custom configurations should be:
>>
>>1. disabled by default,
>>2. enabled IAW README (i.e. CONFIG_xxx CFG_xxx),
>>3. supported by an appropriate README file in u-boot/doc.
>>
>>Congratulations & Best Regards,
>>--Scott
>>N3ADP
>>
>>
>>
>>
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>>    
>>
>
>  
>


-- 
Patrice Kadionik. F6KQH / F4CUQ
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