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
Hello
No, in the Tci6638k2k a Cortex-A15 core cannot access the general purpose registers (r0 -r15) or CP15 registers of another Cortex-A15 core. the communication will have to happen via an external memory-mapped location (or alternatively, using software-generated interrupts).
-Duberly
Wouldn't this be possible, if making connections to the device's own debug interface using GPIO pins ?
I know it might not be the most interesting way to do it, but if an external debugger can do it, I believe it should be possible to make a workaround-hack.
Interesting Idea, I might try this in the RasPi2 actually. But I wonder if we can convince somebody to implement this in real world devices.
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