Multiple projects/SOFs to one RBF

It depends on how the FPGAs are configured.

For example, the board in this photo:

http://www.ovro.caltech.edu/~dwh/carma_board/

Has four Stratix II FPGAs in a passive serial daisy chain (the schematics and controller documentation are on that page).

For passive serial programming I convert each FPGA .sof to .rbf and then concatenate them together into a single binary file.

Cheers,

Dave

I am using one Cyclone IV FPGA and utilize the remote update feature. The factory.sof goes into one address on the serial configuration device and the application.sof goes into a higher address on the serial configuration device.

When programming the FPGA with a .jic file, I can add the factory.sof and application.sof via SOF pages and set the addresses that way. When trying to convert to an .rbf, (1) I can't using a .jic and (2) I can't set address locations when adding the .sof files to the SOF page. Moreover, I can't add an SOF page, I am only allowed one.

Interesting link ...

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I am using one Cyclone IV FPGA and utilize the remote update feature. The factory.sof goes into one address on the serial configuration device and the application.sof goes into a higher address on the serial configuration device.

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I haven't tried using the Altera tools for that, so cannot help, sorry.

Note that the EPCS devices are just serial (SPI) Flash. If you want to control the device programming, you can write a programmer easily enough. That would allow you to independently update and verify multiple images in the flash.

That feature might exist in the nios2-flash-programmer tool:

http://www.altera.com/literature/ug/ug_nios2_flash_programmer.pdf

Cheers,

Dave