Merging multiple bitstreams into one

[rguerra-topic]

Hi, currently we have 3 bitstreams that we program individually into an SPI flash memory, each one starting on its own offset. We would like to see the possibility of merging the 3 bitstreams into one (with each one again with its same offset in the memory) so that we only have to program it once.

Thanks in advance.

[stephenm]

Are these partitial bitstreams? what do you mean merge into one? 

Or, are you taking about multi-boot? 

[rguerra-topic]

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@stephenmwrote:

Are these partitial bitstreams? what do you mean merge into one? 

Or, are you taking about multi-boot? 

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Yes indeed we are talking about multi-boot :) We want to merge them all into one so that we only need to program one file instead of 3 separate ones.

[stephenm]

There is a few documents on this:
http://www.wiki.xilinx.com/Zynq-7000+AP+SoC+Boot+-+Multiboot+Tech+Tip

[rguerra-topic]

Those documents talk about multibooting, which we already can do. To explain better what we want, this is our current setup the addresses are just for the example):

1. Program bitstream1 at address 0x1000

2. Program bitstream2 at address 0x2000

3. Program bitstream3 at address 0x3000

What we want is the following:

1. Merge bitstream1, bitstream2 and bitstream3 into a new bistreamMerged, respecting the addresses.

2. Program bitstreamMerged at address 0x1000

Theoretically the addresses where the bitstreams are in both implementations will end up in the same place.