Re:Arm Announces Cortex-R82: First 64-Bit Real Time Processor
by sitkack on Tuesday September 08, 2020 @08:57AM
(#24407909)
What level of interposition can one do with these hard cpu cores? Are the cache eviction policies pluggable? Is "user code" in the path between the cpu and main memory?
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Re:Arm Announces Cortex-R82: First 64-Bit Real Time Processor
by ChuckMcM on Tuesday September 08, 2020 @06:28PM
(#24414320)
On the Ultrascale Zynq's you can build RAM that is attached to the fabric and available to the processor across the AMBA bus. It isn't something I personally have played with a whole bunch so I can't give you a better answer then to look at the Zynq data sheets.
I do know you can make user hardware "appear" as memory to the main CPU.
Re:Arm Announces Cortex-R82: First 64-Bit Real Time Processor
by sitkack on Tuesday September 08, 2020 @10:20PM
(#24416154)
Neat. I am stoked to play with the new PolarFire RISC-V Icicle board.
https://www.microsemi.com/existing-parts/parts/152514
https://www.crowdsupply.com/microchip/polarfire-soc-icicle-k...