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[rtl] add "cached access" infrastructure #359

Merged
merged 2 commits into from
Jul 6, 2022
Merged

[rtl] add "cached access" infrastructure #359

merged 2 commits into from
Jul 6, 2022

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stnolting
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@stnolting stnolting commented Jul 5, 2022

This PR adds a minimal infrastructure to allow all internal devices to check if the current bus access is "cached". Right now, this feature is not used and does not impact area/critical path at all. I am planning to use this additional information to allow burst accesses for some peripherals:

  • work-in-progress: XIP (reducing overhead - faster access)
  • planned: Wishbone ("real" pipelined burst accesses)

@stnolting stnolting self-assigned this Jul 5, 2022
@stnolting stnolting added the HW hardware-related label Jul 5, 2022
@stnolting stnolting marked this pull request as ready for review July 5, 2022 13:25
@stnolting stnolting merged commit 4de429f into main Jul 6, 2022
@stnolting stnolting deleted the cached_accesses branch July 6, 2022 05:55
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