[OE-core] Setting a preferred provider via image?

[Mike Looijmans]

I've gotten into a jam now.

For an image to work nicely on a Zynq processor, it needs to load the FPGA 
with useful stuff, and it also needs to adapt the (SPL) bootloader to 
configure the clocks etcetera at boot.

The FPGA image recipe yields "ps7_init.[ch]" files which must be compiled into 
u-boot, and which are to be created usin Xilinx tools.

For now, I've invented a "virtual/xilinx-sdk" package that can be provided by 
the FPGA recipe, and u-boot-spl that DEPENDS on it. In the machine or local 
config, one can set PREFERRED_PROVIDER_virtual/xilinx-sdk="package" and thus 
pick the FPGA design that will be responsible for the bootloader.

My problem now is that the FPGA configuration is actually something that the 
"image" decides upon, and multiple configurations can be used for a single 
machine (great all programmable hardware) because the FPGA part can implement 
just about anything (and switch that at runtime too).

Is there a way to propagate a PREFERRED_PROVIDER via the image?

Or shoud I move in another direction and consider a slightly differently 
configured FPGA as a totally new MACHINE? Maybe use MACHINE_CLASS to join them?

I'm interested in your ideas, opinions, tricks, etc...


-- 
Mike Looijmans - TOPIC Automation


Met vriendelijke groet / kind regards,

Mike Looijmans

TOPIC Embedded Systems
Eindhovenseweg 32-C, NL-5683 KH Best
Postbus 440, NL-5680 AK Best
Telefoon: (+31) – (0)499 - 33.69.79
Telefax: (+31) - (0)499 - 33.69.70
E-mail: mike.looijmans at topic.nl
Website: www.topic.nl

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