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Adventurer
Adventurer
368 Views
Registered: ‎02-05-2019

Ultrascale MPSoC: How to program the BBRAM from Linux

Hi,

Is there a way in which I could program the BBRAM from a Linux environment?  I looked through the PM API IDs, but did not see anything listed there that seems related to BBRAM programming.

Thanks!

Regards,
Yu Fei

 

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Xilinx Employee
Xilinx Employee
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Registered: ‎04-15-2011

@yufei.leung 

I am afraid that programming the BBRAM in Linux is not suuported right now. We saw few requests for this usage by now.

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Adventurer
Adventurer
329 Views
Registered: ‎02-05-2019

Hello,

OK, thanks for that information.  If I were to attempt to add this feature, how would you recommend doing so?

Would it make sense to modify the Arm Trusted Firmware, and add the BBRAM programming function in there?

Or would it make more sense to modify the PMUFW's BSP so that it also includes the BBRAM code?  BTW, I raised a related question in this forum thread, asking why the PMUFW's BSP has removed the BBRAM handling code:
    https://forums.xilinx.com/t5/Embedded-Boot-and-Configuration/Ultrascale-Why-does-PMUFW-s-BSP-remove-BBRAM-functions/m-p/987559#M3003

Your advice would be greatly appreciated.  Thanks!

Regards,
Yu Fei

 

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