subsystem: add an optional node to use for assigning hartids #2447
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This is useful when the hartid of a core cannot be known statically.
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ingallsj
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May 2, 2020
hcook
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May 4, 2020
| @@ -80,14 +82,29 @@ class RocketSubsystem(implicit p: Parameters) extends BaseSubsystem | |||
| // add Mask ROM devices | |||
| val maskROMs = p(PeripheryMaskROMKey).map { MaskROM.attach(_, cbus) } | |||
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| val hartPrefixNode = if (p(HartPrefixKey)) { | |||
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If possible, I would put this in the trait HasTiles or HasRocketTiles, both of which actually currently get reused across multiple BaseSubsystem subclasses, unlike RocketSubsystem which is only used here and in soc-testsocket-sifive
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I would do that, but then this PR would break those other subclasses. Since the hartReg() part of this is needed to unblock the pipeline, I think I will do that refactor as a follow-up PR.
For whatever reason, this step is hanging.
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This is useful when the hartid of a core cannot be known statically.
Type of change: feature request
Impact: API addition (no impact on existing code)
Development Phase: implementation