[Nouveau] How to dump vbioses of Pascal cards?

[Wuzongyong (Cordius Wu, Euler Dept)]

Is there any method to dump vbioses of NVIDIA Pascal  cards(not use nvflash), such as P100/P4?
I used nvagetbios, but it just report a error "Card has second bios", what does this mean?

Thanks,
Zongyong Wu

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