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This seems very very wrong #2

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duaneellissd opened this issue Mar 27, 2023 · 1 comment

duaneellissd commented Mar 27, 2023

https://github.com/Mi-V-Soft-RISC-V/miv-rv32-bare-metal-examples/blob/main/driver-examples/miv-plic/miv-rv32-plic/src/platform/drivers/fpga_ip/miv_plic/miv_plic.h#L303

Specificlally this loop will write at offset +0 for a 32bit value.
Then when INC=1, it will write at offset +1 for a 32bit value

But this is no aligned so you get an alignement fault.
So how does this work? Confused..

Also - why is this code calculating an address
But other places have/use a structure that overlays the MIV_PLIC?

Author

duaneellissd commented Mar 27, 2023

Also - why does the loop use (N + 32) / 32 - should this not use (N+31)/32 instead?

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