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rocket-chip/src/main/scala/subsystem/Configs.scala
2018-02-21 14:52:59 -08:00

302 lines
10 KiB
Scala

// See LICENSE.SiFive for license details.
// See LICENSE.Berkeley for license details.
package freechips.rocketchip.subsystem
import Chisel._
import freechips.rocketchip.config._
import freechips.rocketchip.devices.debug._
import freechips.rocketchip.devices.tilelink._
import freechips.rocketchip.diplomacy._
import freechips.rocketchip.rocket._
import freechips.rocketchip.tile._
import freechips.rocketchip.tilelink._
import freechips.rocketchip.util._
class BaseSubsystemConfig extends Config ((site, here, up) => {
// Tile parameters
case PgLevels => if (site(XLen) == 64) 3 /* Sv39 */ else 2 /* Sv32 */
case XLen => 64 // Applies to all cores
case MaxHartIdBits => log2Up(site(RocketTilesKey).size)
case BuildCore => (p: Parameters) => new Rocket()(p)
// Interconnect parameters
case SystemBusKey => SystemBusParams(beatBytes = site(XLen)/8, blockBytes = site(CacheBlockBytes))
case PeripheryBusKey => PeripheryBusParams(beatBytes = site(XLen)/8, blockBytes = site(CacheBlockBytes))
case MemoryBusKey => MemoryBusParams(beatBytes = site(XLen)/8, blockBytes = site(CacheBlockBytes))
case FrontBusKey => FrontBusParams(beatBytes = site(XLen)/8, blockBytes = site(CacheBlockBytes))
// Additional device Parameters
case ErrorParams => ErrorParams(Seq(AddressSet(0x3000, 0xfff)), maxAtomic=site(XLen)/8, maxTransfer=4096)
case BootROMParams => BootROMParams(contentFileName = "./bootrom/bootrom.img")
case DebugModuleParams => DefaultDebugModuleParams(site(XLen))
})
/* Composable partial function Configs to set individual parameters */
class WithNBigCores(n: Int) extends Config((site, here, up) => {
case RocketTilesKey => {
val big = RocketTileParams(
core = RocketCoreParams(mulDiv = Some(MulDivParams(
mulUnroll = 8,
mulEarlyOut = true,
divEarlyOut = true))),
dcache = Some(DCacheParams(
rowBits = site(SystemBusKey).beatBits,
nMSHRs = 0,
blockBytes = site(CacheBlockBytes))),
icache = Some(ICacheParams(
rowBits = site(SystemBusKey).beatBits,
blockBytes = site(CacheBlockBytes))))
List.tabulate(n)(i => big.copy(hartId = i))
}
})
class WithNSmallCores(n: Int) extends Config((site, here, up) => {
case RocketTilesKey => {
val small = RocketTileParams(
core = RocketCoreParams(useVM = false, fpu = None),
btb = None,
dcache = Some(DCacheParams(
rowBits = site(SystemBusKey).beatBits,
nSets = 64,
nWays = 1,
nTLBEntries = 4,
nMSHRs = 0,
blockBytes = site(CacheBlockBytes))),
icache = Some(ICacheParams(
rowBits = site(SystemBusKey).beatBits,
nSets = 64,
nWays = 1,
nTLBEntries = 4,
blockBytes = site(CacheBlockBytes))))
List.tabulate(n)(i => small.copy(hartId = i))
}
})
class With1TinyCore extends Config((site, here, up) => {
case XLen => 32
case RocketTilesKey => List(RocketTileParams(
core = RocketCoreParams(
useVM = false,
fpu = None,
mulDiv = Some(MulDivParams(mulUnroll = 8))),
btb = None,
dcache = Some(DCacheParams(
rowBits = site(SystemBusKey).beatBits,
nSets = 256, // 16Kb scratchpad
nWays = 1,
nTLBEntries = 4,
nMSHRs = 0,
blockBytes = site(CacheBlockBytes),
scratch = Some(0x80000000L))),
icache = Some(ICacheParams(
rowBits = site(SystemBusKey).beatBits,
nSets = 64,
nWays = 1,
nTLBEntries = 4,
blockBytes = site(CacheBlockBytes)))))
case RocketCrossingKey => List(RocketCrossingParams(
crossingType = SynchronousCrossing(),
master = TileMasterPortParams(cork = Some(true))
))
})
class WithNBanksPerMemChannel(n: Int) extends Config((site, here, up) => {
case BankedL2Key => up(BankedL2Key, site).copy(nBanksPerChannel = n)
})
class WithNTrackersPerBank(n: Int) extends Config((site, here, up) => {
case BroadcastKey => up(BroadcastKey, site).copy(nTrackers = n)
})
// This is the number of icache sets for all Rocket tiles
class WithL1ICacheSets(sets: Int) extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(icache = r.icache.map(_.copy(nSets = sets))) }
})
// This is the number of icache sets for all Rocket tiles
class WithL1DCacheSets(sets: Int) extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(dcache = r.dcache.map(_.copy(nSets = sets))) }
})
class WithL1ICacheWays(ways: Int) extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(icache = r.icache.map(_.copy(nWays = ways)))
}
})
class WithL1DCacheWays(ways: Int) extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(dcache = r.dcache.map(_.copy(nWays = ways)))
}
})
class WithCacheBlockBytes(linesize: Int) extends Config((site, here, up) => {
case CacheBlockBytes => linesize
})
class WithBufferlessBroadcastHub extends Config((site, here, up) => {
case BroadcastKey => up(BroadcastKey, site).copy(bufferless = true)
})
/**
* WARNING!!! IGNORE AT YOUR OWN PERIL!!!
*
* There is a very restrictive set of conditions under which the stateless
* bridge will function properly. There can only be a single tile. This tile
* MUST use the blocking data cache (L1D_MSHRS == 0) and MUST NOT have an
* uncached channel capable of writes (i.e. a RoCC accelerator).
*
* This is because the stateless bridge CANNOT generate probes, so if your
* system depends on coherence between channels in any way,
* DO NOT use this configuration.
*/
class WithIncoherentTiles extends Config((site, here, up) => {
case RocketCrossingKey => up(RocketCrossingKey, site) map { r =>
r.copy(master = r.master.copy(cork = Some(true)))
}
case BankedL2Key => up(BankedL2Key, site).copy(coherenceManager = { subsystem =>
val ww = LazyModule(new TLWidthWidget(subsystem.sbus.beatBytes)(subsystem.p))
(ww.node, ww.node, () => None)
})
})
class WithRV32 extends Config((site, here, up) => {
case XLen => 32
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(core = r.core.copy(
fpu = r.core.fpu.map(_.copy(fLen = 32)),
mulDiv = Some(MulDivParams(mulUnroll = 8))))
}
})
class WithNonblockingL1(nMSHRs: Int) extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(dcache = r.dcache.map(_.copy(nMSHRs = nMSHRs)))
}
})
class WithNBreakpoints(hwbp: Int) extends Config ((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(core = r.core.copy(nBreakpoints = hwbp))
}
})
class WithRoccExample extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(rocc =
Seq(
RoCCParams(
opcodes = OpcodeSet.custom0,
generator = (p: Parameters) => {
val accumulator = LazyModule(new AccumulatorExample()(p))
accumulator}),
RoCCParams(
opcodes = OpcodeSet.custom1,
generator = (p: Parameters) => {
val translator = LazyModule(new TranslatorExample()(p))
translator},
nPTWPorts = 1),
RoCCParams(
opcodes = OpcodeSet.custom2,
generator = (p: Parameters) => {
val counter = LazyModule(new CharacterCountExample()(p))
counter
})
))
}
})
class WithDefaultBtb extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(btb = Some(BTBParams()))
}
})
class WithFastMulDiv extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(core = r.core.copy(mulDiv = Some(
MulDivParams(mulUnroll = 8, mulEarlyOut = (site(XLen) > 32), divEarlyOut = true)
)))}
})
class WithoutMulDiv extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(core = r.core.copy(mulDiv = None))
}
})
class WithoutFPU extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(core = r.core.copy(fpu = None))
}
})
class WithFPUWithoutDivSqrt extends Config((site, here, up) => {
case RocketTilesKey => up(RocketTilesKey, site) map { r =>
r.copy(core = r.core.copy(fpu = r.core.fpu.map(_.copy(divSqrt = false))))
}
})
class WithBootROMFile(bootROMFile: String) extends Config((site, here, up) => {
case BootROMParams => up(BootROMParams, site).copy(contentFileName = bootROMFile)
})
class WithSynchronousRocketTiles extends Config((site, here, up) => {
case RocketCrossingKey => up(RocketCrossingKey, site) map { r =>
r.copy(crossingType = SynchronousCrossing())
}
})
class WithAsynchronousRocketTiles(depth: Int, sync: Int) extends Config((site, here, up) => {
case RocketCrossingKey => up(RocketCrossingKey, site) map { r =>
r.copy(crossingType = AsynchronousCrossing(depth, sync))
}
})
class WithRationalRocketTiles extends Config((site, here, up) => {
case RocketCrossingKey => up(RocketCrossingKey, site) map { r =>
r.copy(crossingType = RationalCrossing())
}
})
class WithEdgeDataBits(dataBits: Int) extends Config((site, here, up) => {
case MemoryBusKey => up(MemoryBusKey, site).copy(beatBytes = dataBits/8)
case ExtIn => up(ExtIn, site).copy(beatBytes = dataBits/8)
})
class WithJtagDTM extends Config ((site, here, up) => {
case IncludeJtagDTM => true
})
class WithNBitPeripheryBus(nBits: Int) extends Config ((site, here, up) => {
case PeripheryBusKey => up(PeripheryBusKey, site).copy(beatBytes = nBits/8)
})
class WithoutTLMonitors extends Config ((site, here, up) => {
case MonitorsEnabled => false
})
class WithNExtTopInterrupts(nExtInts: Int) extends Config((site, here, up) => {
case NExtTopInterrupts => nExtInts
})
class WithNMemoryChannels(n: Int) extends Config((site, here, up) => {
case BankedL2Key => up(BankedL2Key, site).copy(nMemoryChannels = n)
})
class WithExtMemSize(n: Long) extends Config((site, here, up) => {
case ExtMem => up(ExtMem, site).copy(size = n)
})
class WithDTS(model: String, compat: Seq[String]) extends Config((site, here, up) => {
case DTSModel => model
case DTSCompat => compat
})
class WithTimebase(hertz: BigInt) extends Config((site, here, up) => {
case DTSTimebase => hertz
})