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Altera_Forum
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13 years ago

NIOS II and Cyclone III Remote Update

Have spent several days now searching and reading and think I am nearly there... but not quite. I am using the NIOS II core with SOPC builder. I use Quartus II for the FPGA image. This is a projec...
Altera_Forum's avatar
Altera_Forum
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13 years ago

Do you have one or two firmware (sof) images in the EPCS? Do you have one or two software images in the EPCS?

When you reconfigure using the remote update core, you need to tell the core where the firmware image is located that you want to use next instead of the one at the beginning of the EPCS.

If you have 3 or more firmware images that you need to go between, you will need to have provisions in the firmware image at 0 to decide which one to use. Assume you have 3 firmware images at addresses 0, X and Y. The firmware at 0 boots, decides to reconfigure to X. When the firmware at X is loaded, if it attempts to reconfigure it will always load the firmware at 0.