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nkraemer
Participant
Participant
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Registered: ‎03-05-2019

Multiboot From a Single Bitfile/Implementation Run

I'm working with a 7series FPGA and Vivado 2019.2, and I would like to get multiboot setup. Using xapp1247 as a guide, I'm able to generate a golden bitfile and an update bitfile and things work normally. However for my use case, I don't want to generate a separate golden bitfile and update bitfile; I want these two bitfiles to be built from the same implementation run, but one should have the "BITSTREAM.CONFIG.NEXT_CONFIG_ADDR <address>" property set and the other should not.

Can this be accomplished within Vivado? If not, would a script to modify one bitfile work?

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wduffy
Xilinx Employee
Xilinx Employee
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Registered: ‎01-21-2013

Hi @nkraemer,

I'm a little confused about the usecase. Do you actually want identical designs for both the Update and Golden image?

You will need to have separate bitstreams. However, you will not have to run through the whole flow again. There is a way to just update the settings and regenerate the next bitfile with new settings, be sure to change the name though of the bitfile though. 

To not have to go through the synthesis and implementation again, any changes to constraints would need to be done via the set_property commands in the TCL console or use the Bitstream Settings GUI, in order for them to take affect. Simply changing the XDC is not enough.  

I hope this helps.

Thanks,
Wendy
Xilinx Technical Support
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