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Make TinyRocketConfig work with multi-clock work

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This commit is contained in:
abejgonzalez
2020-12-28 09:55:10 -08:00
parent fbb8ad3e61
commit b1cedf2d61
2 changed files with 12 additions and 2 deletions
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10
generators/chipyard/src/main/scala/CustomBusTopologies.scala
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@@ -70,3 +70,13 @@ class WithMulticlockCoherentBusTopology extends Config((site, here, up) => {
l2 = site(BankedL2Key),
sbusToMbusXType = site(SbusToMbusXTypeKey)))
})
class WithMulticlockIncoherentBusTopology extends Config((site, here, up) => {
case TLNetworkTopologyLocated(InSubsystem) => List(
JustOneBusTopologyParams(sbus = site(SystemBusKey)),
HierarchicalMulticlockBusTopologyParams(
pbus = site(PeripheryBusKey),
fbus = site(FrontBusKey),
cbus = site(ControlBusKey),
xTypes = SubsystemCrossingParams()))
})

4
generators/chipyard/src/main/scala/config/RocketConfigs.scala
View File

@@ -15,7 +15,7 @@ class TinyRocketConfig extends Config(
new chipyard.config.WithTLSerialLocation(
freechips.rocketchip.subsystem.FBUS,
freechips.rocketchip.subsystem.PBUS) ++ // attach TL serial adapter to f/p busses
new freechips.rocketchip.subsystem.WithIncoherentBusTopology ++ // use incoherent bus topology
new chipyard.WithMulticlockIncoherentBusTopology ++ // use incoherent bus topology
new freechips.rocketchip.subsystem.WithNBanks(0) ++ // remove L2$
new freechips.rocketchip.subsystem.WithNoMemPort ++ // remove backing memory
new freechips.rocketchip.subsystem.With1TinyCore ++ // single tiny rocket-core
@@ -189,7 +189,7 @@ class MMIORocketConfig extends Config(
class MulticlockRocketConfig extends Config(
new freechips.rocketchip.subsystem.WithNBigCores(1) ++
// Frequency specifications
new chipyard.config.WithTileFrequency(1600.0) ++ // Matches the maximum frequency of U540
new chipyard.config.WithTileFrequency(1600.0) ++ // Matches the maximum frequency of U540
new chipyard.config.WithSystemBusFrequency(800.0) ++ // Ditto
new chipyard.config.WithMemoryBusFrequency(1000.0) ++ // 2x the U540 freq (appropriate for a 128b Mbus)
new chipyard.config.WithPeripheryBusFrequency(100) ++ // Retains the default pbus frequency