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How to set secondary core's registers from primary arm?

Hi all,

Im working on Keystone II Tci6638k2k(4arm+8dsp) custom design board with u-boot. I understand that how u-boot working.

U-boot gives entry point to other cores. Other cores take program counters with this way. But i want to give core registers too. Is it possible? Can primary arm access secondary arm's registers?

Best Regards.

Srt