riscv/rocket-chip
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Merge branch 'master' into tilelink2.2

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Andrew Waterman 2016-09-07 11:47:50 -07:00 committed by GitHub
commit 23d0b31615
19 changed files with 466 additions and 320 deletions
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2
firrtl

@ -1 +1 @@
Subproject commit a2af16c1fb1f5166eab34188df9944012da3cbc3
Subproject commit 6a05468ed0ece1ace3019666b16f2ae83ef76ef9

2
riscv-tools

@ -1 +1 @@
Subproject commit 61d74b5837d270f116fc21e907ed78f582361688
Subproject commit 4d7e0824dbc1d57d0ff987a4499bd118b3dbe563

11
src/main/scala/coreplex/Configs.scala
View File

@ -79,6 +79,9 @@ class BaseCoreplexConfig extends Config (
case BuildTiles => {
val env = if(site(UseVM)) List("p","v") else List("p")
site(FPUKey) foreach { case cfg =>
if (site(XLen) == 32) {
TestGeneration.addSuites(env.map(rv32ufNoDiv))
} else {
TestGeneration.addSuite(rv32udBenchmarks)
TestGeneration.addSuites(env.map(rv64ufNoDiv))
TestGeneration.addSuites(env.map(rv64udNoDiv))
@ -87,6 +90,7 @@ class BaseCoreplexConfig extends Config (
TestGeneration.addSuites(env.map(rv64ud))
}
}
}
if (site(UseAtomics)) TestGeneration.addSuites(env.map(if (site(XLen) == 64) rv64ua else rv32ua))
if (site(UseCompressed)) TestGeneration.addSuites(env.map(if (site(XLen) == 64) rv64uc else rv32uc))
val (rvi, rvu) =
@ -329,10 +333,7 @@ class WithNL2Ways(n: Int) extends Config(
class WithRV32 extends Config(
(pname,site,here) => pname match {
case XLen => 32
case UseVM => false
case UseUser => false
case UseAtomics => false
case FPUKey => None
case FPUKey => Some(FPUConfig(divSqrt = false))
case RegressionTestNames => LinkedHashSet(
"rv32mi-p-ma_addr",
"rv32mi-p-csr",
@ -356,6 +357,8 @@ class WithSmallCores extends Config (
topDefinitions = { (pname,site,here) => pname match {
case MulDivKey => Some(MulDivConfig())
case FPUKey => None
case UseVM => false
case UseUser => false
case NTLBEntries => 4
case BtbKey => BtbParameters(nEntries = 0)
case NAcquireTransactors => 2

2
src/main/scala/coreplex/Testing.scala
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@ -144,6 +144,8 @@ object DefaultTestSuites {
val rv64uf = new AssemblyTestSuite("rv64uf", rv64ufNames)(_)
val rv64ufNoDiv = new AssemblyTestSuite("rv64uf", rv64ufNames - "fdiv")(_)
val rv32ufNoDiv = new AssemblyTestSuite("rv32uf", rv64ufNames - "fdiv")(_)
val rv64udNames = rv64ufNames + "structural"
val rv64ud = new AssemblyTestSuite("rv64ud", rv64udNames)(_)
val rv64udNoDiv = new AssemblyTestSuite("rv64ud", rv64udNames - "fdiv")(_)

12
src/main/scala/junctions/addrmap.scala
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@ -77,8 +77,6 @@ class AddrMap(
var cacheable = true
for (AddrMapEntry(name, r) <- entriesIn) {
if (r.start != 0) {
val align = BigInt(1) << log2Ceil(r.size)
require(r.start >= base, s"region $name base address 0x${r.start.toString(16)} overlaps previous base 0x${base.toString(16)}")
base = r.start
} else {
base = (base + r.size - 1) / r.size * r.size
@ -121,6 +119,16 @@ class AddrMap(
}.flatten.sortBy(_.region.start)
}
// checks to see whether any MemRange overlaps within this AddrMap
flatten.combinations(2) foreach {
case (Seq(AddrMapEntry(an, ar), AddrMapEntry(bn, br))) =>
val arEnd = ar.start + ar.size
val brEnd = br.start + br.size
val abOverlaps = ar.start < brEnd && br.start < arEnd
require(!abOverlaps,
"region $an@0x${ar.start.toString(16)} overlaps region $bn@0x${br.start.toString(16)}")
}
def toRange: MemRange = MemRange(start, size, attr)
def apply(name: String): MemRegion = mapping(name)
def contains(name: String): Boolean = mapping.contains(name)

2
src/main/scala/rocket/btb.scala
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@ -11,7 +11,7 @@ import uncore.util._
case object BtbKey extends Field[BtbParameters]
case class BtbParameters(
nEntries: Int = 62,
nEntries: Int = 40,
nRAS: Int = 2,
updatesOutOfOrder: Boolean = false)

8
src/main/scala/rocket/csr.scala
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@ -260,11 +260,13 @@ class CSRFile(implicit p: Parameters) extends CoreModule()(p)
val cpu_ren = io.rw.cmd =/= CSR.N && !system_insn
val cpu_wen = cpu_ren && io.rw.cmd =/= CSR.R
val isa_string = "IM" +
val isa_string = "I" +
(if (usingMulDiv) "M" else "") +
(if (usingAtomics) "A" else "") +
(if (usingFPU) "F" else "") +
(if (usingFPU && xLen > 32) "D" else "") +
(if (usingVM) "S" else "") +
(if (usingUser) "U" else "") +
(if (usingAtomics) "A" else "") +
(if (usingFPU) "FD" else "") +
(if (usingRoCC) "X" else "")
val isa = (BigInt(log2Ceil(xLen) - 4) << (xLen-2)) |
isa_string.map(x => 1 << (x - 'A')).reduce(_|_)

4
src/main/scala/rocket/dcache.scala
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@ -239,7 +239,7 @@ class DCache(implicit p: Parameters) extends L1HellaCacheModule()(p) {
metaWriteArb.io.in(0).valid := (s2_valid_hit && s2_update_meta) || (s2_victimize && !s2_victim_dirty)
metaWriteArb.io.in(0).bits.way_en := s2_victim_way
metaWriteArb.io.in(0).bits.idx := s2_req.addr(idxMSB, idxLSB)
metaWriteArb.io.in(0).bits.data.coh := Mux(s2_hit, s2_new_hit_state, ClientMetadata.onReset)
metaWriteArb.io.in(0).bits.data.coh := Mux(s2_valid_hit, s2_new_hit_state, ClientMetadata.onReset)
metaWriteArb.io.in(0).bits.data.tag := s2_req.addr(paddrBits-1, untagBits)
// acquire
@ -345,7 +345,7 @@ class DCache(implicit p: Parameters) extends L1HellaCacheModule()(p) {
val newCoh = Wire(init = probeNewCoh)
releaseWay := s2_probe_way
when (s2_victimize && s2_victim_dirty) {
assert(!s2_hit_state.isValid())
assert(!(s2_valid && s2_hit_state.isValid()))
release_state := s_voluntary_writeback
probe_bits.addr_block := Cat(s2_victim_tag, s2_req.addr(idxMSB, idxLSB))
}

404
src/main/scala/rocket/fpu.scala
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@ -42,8 +42,7 @@ object FPConstants
val FLAGS_SZ = 5
}
class FPUCtrlSigs extends Bundle
{
trait HasFPUCtrlSigs {
val cmd = Bits(width = FCMD_WIDTH)
val ldst = Bool()
val wen = Bool()
@ -63,78 +62,85 @@ class FPUCtrlSigs extends Bundle
val wflags = Bool()
}
class FPUDecoder extends Module
{
class FPUCtrlSigs extends Bundle with HasFPUCtrlSigs
class FPUDecoder(implicit p: Parameters) extends FPUModule()(p) {
val io = new Bundle {
val inst = Bits(INPUT, 32)
val sigs = new FPUCtrlSigs().asOutput
}
val decoder = DecodeLogic(io.inst,
List (FCMD_X, X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X),
val default = List(FCMD_X, X,X,X,X,X,X,X,X,X,X,X,X,X,X,X,X)
val f =
Array(FLW -> List(FCMD_X, Y,Y,N,N,N,X,X,Y,N,N,N,N,N,N,N,N),
FLD -> List(FCMD_X, Y,Y,N,N,N,X,X,N,N,N,N,N,N,N,N,N),
FSW -> List(FCMD_MV_XF, Y,N,N,Y,N,Y,X,Y,N,Y,N,N,N,N,N,N),
FSD -> List(FCMD_MV_XF, Y,N,N,Y,N,Y,X,N,N,Y,N,N,N,N,N,N),
FMV_S_X -> List(FCMD_MV_FX, N,Y,N,N,N,X,X,Y,Y,N,N,N,N,N,Y,N),
FMV_D_X -> List(FCMD_MV_FX, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,N),
FCVT_S_W -> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,Y,Y,N,N,N,N,N,Y,Y),
FCVT_S_WU-> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,Y,Y,N,N,N,N,N,Y,Y),
FCVT_S_L -> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,Y,Y,N,N,N,N,N,Y,Y),
FCVT_S_LU-> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,Y,Y,N,N,N,N,N,Y,Y),
FCVT_D_W -> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FCVT_D_WU-> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FCVT_D_L -> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FCVT_D_LU-> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FMV_X_S -> List(FCMD_MV_XF, N,N,Y,N,N,N,X,Y,N,Y,N,N,N,N,Y,N),
FMV_X_D -> List(FCMD_MV_XF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,N),
FCLASS_S -> List(FCMD_MV_XF, N,N,Y,N,N,N,X,Y,N,Y,N,N,N,N,Y,N),
FCLASS_D -> List(FCMD_MV_XF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,N),
FCVT_W_S -> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,Y,N,Y,N,N,N,N,Y,Y),
FCVT_WU_S-> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,Y,N,Y,N,N,N,N,Y,Y),
FCVT_L_S -> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,Y,N,Y,N,N,N,N,Y,Y),
FCVT_LU_S-> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,Y,N,Y,N,N,N,N,Y,Y),
FEQ_S -> List(FCMD_CMP, N,N,Y,Y,N,N,N,Y,N,Y,N,N,N,N,N,Y),
FLT_S -> List(FCMD_CMP, N,N,Y,Y,N,N,N,Y,N,Y,N,N,N,N,N,Y),
FLE_S -> List(FCMD_CMP, N,N,Y,Y,N,N,N,Y,N,Y,N,N,N,N,N,Y),
FSGNJ_S -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,N),
FSGNJN_S -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,N),
FSGNJX_S -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,N),
FMIN_S -> List(FCMD_MINMAX, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,Y),
FMAX_S -> List(FCMD_MINMAX, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,Y),
FADD_S -> List(FCMD_ADD, N,Y,Y,Y,N,N,Y,Y,N,N,N,Y,N,N,Y,Y),
FSUB_S -> List(FCMD_SUB, N,Y,Y,Y,N,N,Y,Y,N,N,N,Y,N,N,Y,Y),
FMUL_S -> List(FCMD_MUL, N,Y,Y,Y,N,N,N,Y,N,N,N,Y,N,N,Y,Y),
FMADD_S -> List(FCMD_MADD, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FMSUB_S -> List(FCMD_MSUB, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FNMADD_S -> List(FCMD_NMADD, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FNMSUB_S -> List(FCMD_NMSUB, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FDIV_S -> List(FCMD_DIV, N,Y,Y,Y,N,N,N,Y,N,N,N,N,Y,N,Y,Y),
FSQRT_S -> List(FCMD_SQRT, N,Y,Y,N,N,Y,X,Y,N,N,N,N,N,Y,Y,Y))
val d =
Array(FLD -> List(FCMD_X, Y,Y,N,N,N,X,X,N,N,N,N,N,N,N,N,N),
FSD -> List(FCMD_MV_XF, Y,N,N,Y,N,Y,X,N,N,Y,N,N,N,N,N,N),
FMV_D_X -> List(FCMD_MV_FX, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,N),
FCVT_D_W -> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FCVT_D_WU-> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FCVT_D_L -> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FCVT_D_LU-> List(FCMD_CVT_FI, N,Y,N,N,N,X,X,N,Y,N,N,N,N,N,Y,Y),
FMV_X_D -> List(FCMD_MV_XF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,N),
FCLASS_D -> List(FCMD_MV_XF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,N),
FCVT_W_D -> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,Y),
FCVT_WU_D-> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,Y),
FCVT_L_D -> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,Y),
FCVT_LU_D-> List(FCMD_CVT_IF, N,N,Y,N,N,N,X,N,N,Y,N,N,N,N,Y,Y),
FCVT_S_D -> List(FCMD_CVT_FF, N,Y,Y,N,N,N,X,Y,N,N,Y,N,N,N,Y,Y),
FCVT_D_S -> List(FCMD_CVT_FF, N,Y,Y,N,N,N,X,N,N,N,Y,N,N,N,Y,Y),
FEQ_S -> List(FCMD_CMP, N,N,Y,Y,N,N,N,Y,N,Y,N,N,N,N,N,Y),
FLT_S -> List(FCMD_CMP, N,N,Y,Y,N,N,N,Y,N,Y,N,N,N,N,N,Y),
FLE_S -> List(FCMD_CMP, N,N,Y,Y,N,N,N,Y,N,Y,N,N,N,N,N,Y),
FEQ_D -> List(FCMD_CMP, N,N,Y,Y,N,N,N,N,N,Y,N,N,N,N,N,Y),
FLT_D -> List(FCMD_CMP, N,N,Y,Y,N,N,N,N,N,Y,N,N,N,N,N,Y),
FLE_D -> List(FCMD_CMP, N,N,Y,Y,N,N,N,N,N,Y,N,N,N,N,N,Y),
FSGNJ_S -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,N),
FSGNJN_S -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,N),
FSGNJX_S -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,N),
FSGNJ_D -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,N,N,N,Y,N,N,N,N,N),
FSGNJN_D -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,N,N,N,Y,N,N,N,N,N),
FSGNJX_D -> List(FCMD_SGNJ, N,Y,Y,Y,N,N,N,N,N,N,Y,N,N,N,N,N),
FMIN_S -> List(FCMD_MINMAX, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,Y),
FMAX_S -> List(FCMD_MINMAX, N,Y,Y,Y,N,N,N,Y,N,N,Y,N,N,N,N,Y),
FMIN_D -> List(FCMD_MINMAX, N,Y,Y,Y,N,N,N,N,N,N,Y,N,N,N,N,Y),
FMAX_D -> List(FCMD_MINMAX, N,Y,Y,Y,N,N,N,N,N,N,Y,N,N,N,N,Y),
FADD_S -> List(FCMD_ADD, N,Y,Y,Y,N,N,Y,Y,N,N,N,Y,N,N,Y,Y),
FSUB_S -> List(FCMD_SUB, N,Y,Y,Y,N,N,Y,Y,N,N,N,Y,N,N,Y,Y),
FMUL_S -> List(FCMD_MUL, N,Y,Y,Y,N,N,N,Y,N,N,N,Y,N,N,Y,Y),
FADD_D -> List(FCMD_ADD, N,Y,Y,Y,N,N,Y,N,N,N,N,Y,N,N,Y,Y),
FSUB_D -> List(FCMD_SUB, N,Y,Y,Y,N,N,Y,N,N,N,N,Y,N,N,Y,Y),
FMUL_D -> List(FCMD_MUL, N,Y,Y,Y,N,N,N,N,N,N,N,Y,N,N,Y,Y),
FMADD_S -> List(FCMD_MADD, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FMSUB_S -> List(FCMD_MSUB, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FNMADD_S -> List(FCMD_NMADD, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FNMSUB_S -> List(FCMD_NMSUB, N,Y,Y,Y,Y,N,N,Y,N,N,N,Y,N,N,Y,Y),
FMADD_D -> List(FCMD_MADD, N,Y,Y,Y,Y,N,N,N,N,N,N,Y,N,N,Y,Y),
FMSUB_D -> List(FCMD_MSUB, N,Y,Y,Y,Y,N,N,N,N,N,N,Y,N,N,Y,Y),
FNMADD_D -> List(FCMD_NMADD, N,Y,Y,Y,Y,N,N,N,N,N,N,Y,N,N,Y,Y),
FNMSUB_D -> List(FCMD_NMSUB, N,Y,Y,Y,Y,N,N,N,N,N,N,Y,N,N,Y,Y),
FDIV_S -> List(FCMD_DIV, N,Y,Y,Y,N,N,N,Y,N,N,N,N,Y,N,Y,Y),
FSQRT_S -> List(FCMD_SQRT, N,Y,Y,N,N,Y,X,Y,N,N,N,N,N,Y,Y,Y),
FDIV_D -> List(FCMD_DIV, N,Y,Y,Y,N,N,N,N,N,N,N,N,Y,N,Y,Y),
FSQRT_D -> List(FCMD_SQRT, N,Y,Y,N,N,Y,X,N,N,N,N,N,N,Y,Y,Y)
))
FSQRT_D -> List(FCMD_SQRT, N,Y,Y,N,N,Y,X,N,N,N,N,N,N,Y,Y,Y))
val insns = fLen match {
case 32 => f
case 64 => f ++ d
}
val decoder = DecodeLogic(io.inst, default, insns)
val s = io.sigs
val sigs = Seq(s.cmd, s.ldst, s.wen, s.ren1, s.ren2, s.ren3, s.swap12,
s.swap23, s.single, s.fromint, s.toint, s.fastpipe, s.fma,
@ -149,13 +155,13 @@ class FPUIO(implicit p: Parameters) extends CoreBundle {
val fcsr_rm = Bits(INPUT, FPConstants.RM_SZ)
val fcsr_flags = Valid(Bits(width = FPConstants.FLAGS_SZ))
val store_data = Bits(OUTPUT, 64)
val store_data = Bits(OUTPUT, fLen)
val toint_data = Bits(OUTPUT, xLen)
val dmem_resp_val = Bool(INPUT)
val dmem_resp_type = Bits(INPUT, 3)
val dmem_resp_tag = UInt(INPUT, 5)
val dmem_resp_data = Bits(INPUT, 64)
val dmem_resp_data = Bits(INPUT, fLen)
val valid = Bool(INPUT)
val fcsr_rdy = Bool(OUTPUT)
@ -172,18 +178,19 @@ class FPUIO(implicit p: Parameters) extends CoreBundle {
val cp_resp = Decoupled(new FPResult())
}
class FPResult extends Bundle
{
val data = Bits(width = 65)
class FPResult(implicit p: Parameters) extends CoreBundle()(p) {
val data = Bits(width = fLen+1)
val exc = Bits(width = 5)
}
class FPInput extends FPUCtrlSigs {
class FPInput(implicit p: Parameters) extends CoreBundle()(p) with HasFPUCtrlSigs {
val rm = Bits(width = 3)
val typ = Bits(width = 2)
val in1 = Bits(width = 65)
val in2 = Bits(width = 65)
val in3 = Bits(width = 65)
val in1 = Bits(width = fLen+1)
val in2 = Bits(width = fLen+1)
val in3 = Bits(width = fLen+1)
override def cloneType = new FPInput().asInstanceOf[this.type]
}
object ClassifyRecFN {
@ -211,66 +218,101 @@ object ClassifyRecFN {
}
}
class FPToInt extends Module
{
object IsNaNRecFN {
def apply(expWidth: Int, sigWidth: Int, in: UInt) =
in(sigWidth + expWidth - 1, sigWidth + expWidth - 3).andR
}
object IsSNaNRecFN {
def apply(expWidth: Int, sigWidth: Int, in: UInt) =
IsNaNRecFN(expWidth, sigWidth, in) && !in(sigWidth - 2)
}
/** Format conversion without rounding or NaN handling */
object RecFNToRecFN_noncompliant {
def apply(in: UInt, inExpWidth: Int, inSigWidth: Int, outExpWidth: Int, outSigWidth: Int) = {
val sign = in(inSigWidth + inExpWidth)
val fractIn = in(inSigWidth - 2, 0)
val expIn = in(inSigWidth + inExpWidth - 1, inSigWidth - 1)
val fractOut = fractIn << outSigWidth >> inSigWidth
val expOut = {
val expCode = expIn(inExpWidth, inExpWidth - 2)
val commonCase = (expIn + (1 << outExpWidth)) - (1 << inExpWidth)
Mux(expCode === 0 || expCode >= 6, Cat(expCode, commonCase(outExpWidth - 3, 0)),
commonCase(outExpWidth, 0))
}
Cat(sign, expOut, fractOut)
}
}
trait HasFPUParameters {
val fLen: Int
val (sExpWidth, sSigWidth) = (8, 24)
val (dExpWidth, dSigWidth) = (11, 53)
val (maxExpWidth, maxSigWidth) = fLen match {
case 32 => (sExpWidth, sSigWidth)
case 64 => (dExpWidth, dSigWidth)
}
}
abstract class FPUModule(implicit p: Parameters) extends CoreModule()(p) with HasFPUParameters
class FPToInt(implicit p: Parameters) extends FPUModule()(p) {
class Output extends Bundle {
val lt = Bool()
val store = Bits(width = fLen)
val toint = Bits(width = xLen)
val exc = Bits(width = 5)
override def cloneType = new Output().asInstanceOf[this.type]
}
val io = new Bundle {
val in = Valid(new FPInput).flip
val as_double = new FPInput().asOutput
val out = Valid(new Bundle {
val lt = Bool()
val store = Bits(width = 64)
val toint = Bits(width = 64)
val exc = Bits(width = 5)
})
val out = Valid(new Output)
}
val in = Reg(new FPInput)
val valid = Reg(next=io.in.valid)
def upconvert(x: UInt) = {
val s2d = Module(new hardfloat.RecFNToRecFN(8, 24, 11, 53))
s2d.io.in := x
s2d.io.roundingMode := UInt(0)
s2d.io.out
}
val in1_upconvert = upconvert(io.in.bits.in1)
val in2_upconvert = upconvert(io.in.bits.in2)
def upconvert(x: UInt) = RecFNToRecFN_noncompliant(x, sExpWidth, sSigWidth, maxExpWidth, maxSigWidth)
when (io.in.valid) {
in := io.in.bits
when (io.in.bits.single && !io.in.bits.ldst && io.in.bits.cmd =/= FCMD_MV_XF) {
in.in1 := in1_upconvert
in.in2 := in2_upconvert
if (fLen > 32) when (io.in.bits.single && !io.in.bits.ldst && io.in.bits.cmd =/= FCMD_MV_XF) {
in.in1 := upconvert(io.in.bits.in1)
in.in2 := upconvert(io.in.bits.in2)
}
}
val unrec_s = hardfloat.fNFromRecFN(8, 24, in.in1)
val unrec_d = hardfloat.fNFromRecFN(11, 53, in.in1)
val unrec_out = Mux(in.single, Cat(Fill(32, unrec_s(31)), unrec_s), unrec_d)
val unrec_s = hardfloat.fNFromRecFN(sExpWidth, sSigWidth, in.in1).sextTo(xLen)
val unrec_mem = fLen match {
case 32 => unrec_s
case 64 =>
val unrec_d = hardfloat.fNFromRecFN(dExpWidth, dSigWidth, in.in1).sextTo(xLen)
Mux(in.single, unrec_s, unrec_d)
}
val unrec_int = xLen match {
case 32 => unrec_s
case fLen => unrec_mem
}
val classify_s = ClassifyRecFN(8, 24, in.in1)
val classify_d = ClassifyRecFN(11, 53, in.in1)
val classify_out = Mux(in.single, classify_s, classify_d)
val classify_s = ClassifyRecFN(sExpWidth, sSigWidth, in.in1)
val classify_out = fLen match {
case 32 => classify_s
case 64 =>
val classify_d = ClassifyRecFN(dExpWidth, dSigWidth, in.in1)
Mux(in.single, classify_s, classify_d)
}
val dcmp = Module(new hardfloat.CompareRecFN(11, 53))
val dcmp = Module(new hardfloat.CompareRecFN(maxExpWidth, maxSigWidth))
dcmp.io.a := in.in1
dcmp.io.b := in.in2
dcmp.io.signaling := Bool(true)
val dcmp_out = (~in.rm & Cat(dcmp.io.lt, dcmp.io.eq)).orR
val dcmp_exc = dcmp.io.exceptionFlags
val d2l = Module(new hardfloat.RecFNToIN(11, 53, 64))
val d2w = Module(new hardfloat.RecFNToIN(11, 53, 32))
d2l.io.in := in.in1
d2l.io.roundingMode := in.rm
d2l.io.signedOut := ~in.typ(0)
d2w.io.in := in.in1
d2w.io.roundingMode := in.rm
d2w.io.signedOut := ~in.typ(0)
io.out.bits.toint := Mux(in.rm(0), classify_out, unrec_out)
io.out.bits.store := unrec_out
io.out.bits.toint := Mux(in.rm(0), classify_out, unrec_int)
io.out.bits.store := unrec_mem
io.out.bits.exc := Bits(0)
when (in.cmd === FCMD_CMP) {
@ -278,9 +320,18 @@ class FPToInt extends Module
io.out.bits.exc := dcmp_exc
}
when (in.cmd === FCMD_CVT_IF) {
io.out.bits.toint := Mux(in.typ(1), d2l.io.out.asSInt, d2w.io.out.asSInt).asUInt
val dflags = Mux(in.typ(1), d2l.io.intExceptionFlags, d2w.io.intExceptionFlags)
io.out.bits.exc := Cat(dflags(2, 1).orR, UInt(0, 3), dflags(0))
val minXLen = 32
val n = log2Ceil(xLen/minXLen) + 1
for (i <- 0 until n) {
val conv = Module(new hardfloat.RecFNToIN(maxExpWidth, maxSigWidth, minXLen << i))
conv.io.in := in.in1
conv.io.roundingMode := in.rm
conv.io.signedOut := ~in.typ(0)
when (in.typ.extract(log2Ceil(n), 1) === i) {
io.out.bits.toint := conv.io.out.sextTo(xLen)
io.out.bits.exc := Cat(conv.io.intExceptionFlags(2, 1).orR, UInt(0, 3), conv.io.intExceptionFlags(0))
}
}
}
io.out.valid := valid
@ -288,8 +339,7 @@ class FPToInt extends Module
io.as_double := in
}
class IntToFP(val latency: Int) extends Module
{
class IntToFP(val latency: Int)(implicit p: Parameters) extends FPUModule()(p) {
val io = new Bundle {
val in = Valid(new FPInput).flip
val out = Valid(new FPResult)
@ -299,39 +349,50 @@ class IntToFP(val latency: Int) extends Module
val mux = Wire(new FPResult)
mux.exc := Bits(0)
mux.data := hardfloat.recFNFromFN(11, 53, in.bits.in1)
when (in.bits.single) {
mux.data := Cat(SInt(-1, 32), hardfloat.recFNFromFN(8, 24, in.bits.in1))
mux.data := hardfloat.recFNFromFN(sExpWidth, sSigWidth, in.bits.in1)
if (fLen > 32) when (!in.bits.single) {
mux.data := hardfloat.recFNFromFN(dExpWidth, dSigWidth, in.bits.in1)
}
val longValue =
Mux(in.bits.typ(1), in.bits.in1.asSInt,
Mux(in.bits.typ(0), in.bits.in1(31,0).zext, in.bits.in1(31,0).asSInt))
val l2s = Module(new hardfloat.INToRecFN(64, 8, 24))
l2s.io.signedIn := ~in.bits.typ(0)
l2s.io.in := longValue.asUInt
l2s.io.roundingMode := in.bits.rm
val l2d = Module(new hardfloat.INToRecFN(64, 11, 53))
l2d.io.signedIn := ~in.bits.typ(0)
l2d.io.in := longValue.asUInt
l2d.io.roundingMode := in.bits.rm
val intValue = {
val minXLen = 32
val n = log2Ceil(xLen/minXLen) + 1
val res = Wire(init = in.bits.in1.asSInt)
for (i <- 0 until n-1) {
val smallInt = in.bits.in1((minXLen << i) - 1, 0)
when (in.bits.typ.extract(log2Ceil(n), 1) === i) {
res := Mux(in.bits.typ(0), smallInt.zext, smallInt.asSInt)
}
}
res.asUInt
}
when (in.bits.cmd === FCMD_CVT_FI) {
when (in.bits.single) {
mux.data := Cat(SInt(-1, 32), l2s.io.out)
val l2s = Module(new hardfloat.INToRecFN(xLen, sExpWidth, sSigWidth))
l2s.io.signedIn := ~in.bits.typ(0)
l2s.io.in := intValue
l2s.io.roundingMode := in.bits.rm
mux.data := Cat(UInt((BigInt(1) << (fLen - 32)) - 1), l2s.io.out)
mux.exc := l2s.io.exceptionFlags
}.otherwise {
mux.data := l2d.io.out
fLen match {
case 32 =>
case 64 =>
val l2d = Module(new hardfloat.INToRecFN(xLen, dExpWidth, dSigWidth))
l2d.io.signedIn := ~in.bits.typ(0)
l2d.io.in := intValue
l2d.io.roundingMode := in.bits.rm
when (!in.bits.single) {
mux.data := Cat(UInt((BigInt(1) << (fLen - 64)) - 1), l2d.io.out)
mux.exc := l2d.io.exceptionFlags
}
}
}
io.out <> Pipe(in.valid, mux, latency-1)
}
class FPToFP(val latency: Int) extends Module
{
class FPToFP(val latency: Int)(implicit p: Parameters) extends FPUModule()(p) {
val io = new Bundle {
val in = Valid(new FPInput).flip
val out = Valid(new FPResult)
@ -340,50 +401,58 @@ class FPToFP(val latency: Int) extends Module
val in = Pipe(io.in)
// fp->fp units
val isSgnj = in.bits.cmd === FCMD_SGNJ
def fsgnjSign(in1: Bits, in2: Bits, pos: Int, en: Bool, rm: Bits) =
Mux(rm(1) || !en, in1(pos), rm(0)) ^ (en && in2(pos))
val sign_s = fsgnjSign(in.bits.in1, in.bits.in2, 32, in.bits.single && isSgnj, in.bits.rm)
val sign_d = fsgnjSign(in.bits.in1, in.bits.in2, 64, !in.bits.single && isSgnj, in.bits.rm)
val fsgnj = Cat(sign_d, in.bits.in1(63,33), sign_s, in.bits.in1(31,0))
val s2d = Module(new hardfloat.RecFNToRecFN(8, 24, 11, 53))
val d2s = Module(new hardfloat.RecFNToRecFN(11, 53, 8, 24))
s2d.io.in := in.bits.in1
s2d.io.roundingMode := in.bits.rm
d2s.io.in := in.bits.in1
d2s.io.roundingMode := in.bits.rm
val isnan1 = Mux(in.bits.single, in.bits.in1(31,29).andR, in.bits.in1(63,61).andR)
val isnan2 = Mux(in.bits.single, in.bits.in2(31,29).andR, in.bits.in2(63,61).andR)
val issnan1 = isnan1 && ~Mux(in.bits.single, in.bits.in1(22), in.bits.in1(51))
val issnan2 = isnan2 && ~Mux(in.bits.single, in.bits.in2(22), in.bits.in2(51))
val minmax_exc = Cat(issnan1 || issnan2, Bits(0,4))
val isMax = in.bits.rm(0)
val isLHS = isnan2 || isMax =/= io.lt && !isnan1
val signNum = Mux(in.bits.rm(1), in.bits.in1 ^ in.bits.in2, Mux(in.bits.rm(0), ~in.bits.in2, in.bits.in2))
val fsgnj_s = Cat(signNum(32), in.bits.in1(31, 0))
val fsgnj = fLen match {
case 32 => fsgnj_s
case 64 => Mux(in.bits.single, Cat(in.bits.in1 >> 33, fsgnj_s),
Cat(signNum(64), in.bits.in1(63, 0)))
}
val mux = Wire(new FPResult)
mux.exc := minmax_exc
mux.data := in.bits.in2
mux.exc := UInt(0)
mux.data := fsgnj
when (isSgnj) { mux.exc := UInt(0) }
when (isSgnj || isLHS) { mux.data := fsgnj }
when (in.bits.cmd === FCMD_MINMAX) {
def doMinMax(expWidth: Int, sigWidth: Int) = {
val isnan1 = IsNaNRecFN(expWidth, sigWidth, in.bits.in1)
val isnan2 = IsNaNRecFN(expWidth, sigWidth, in.bits.in2)
val issnan1 = IsSNaNRecFN(expWidth, sigWidth, in.bits.in1)
val issnan2 = IsSNaNRecFN(expWidth, sigWidth, in.bits.in2)
(isnan2 || in.bits.rm(0) =/= io.lt && !isnan1, issnan1 || issnan2)
}
val (isLHS, isInvalid) = fLen match {
case 32 => doMinMax(sExpWidth, sSigWidth)
case 64 => MuxT(in.bits.single, doMinMax(sExpWidth, sSigWidth), doMinMax(dExpWidth, dSigWidth))
}
mux.exc := isInvalid << 4
mux.data := in.bits.in1
when (!isLHS) { mux.data := in.bits.in2 }
}
fLen match {
case 32 =>
case 64 =>
when (in.bits.cmd === FCMD_CVT_FF) {
when (in.bits.single) {
mux.data := Cat(SInt(-1, 32), d2s.io.out)
val d2s = Module(new hardfloat.RecFNToRecFN(dExpWidth, dSigWidth, sExpWidth, sSigWidth))
d2s.io.in := in.bits.in1
d2s.io.roundingMode := in.bits.rm
mux.data := Cat(UInt((BigInt(1) << (fLen - 32)) - 1), d2s.io.out)
mux.exc := d2s.io.exceptionFlags
}.otherwise {
val s2d = Module(new hardfloat.RecFNToRecFN(sExpWidth, sSigWidth, dExpWidth, dSigWidth))
s2d.io.in := in.bits.in1
s2d.io.roundingMode := in.bits.rm
mux.data := s2d.io.out
mux.exc := s2d.io.exceptionFlags
}
}
}
io.out <> Pipe(in.valid, mux, latency-1)
}
class FPUFMAPipe(val latency: Int, expWidth: Int, sigWidth: Int) extends Module
{
class FPUFMAPipe(val latency: Int, expWidth: Int, sigWidth: Int)(implicit p: Parameters) extends FPUModule()(p) {
val io = new Bundle {
val in = Valid(new FPInput).flip
val out = Valid(new FPResult)
@ -412,13 +481,12 @@ class FPUFMAPipe(val latency: Int, expWidth: Int, sigWidth: Int) extends Module
fma.io.c := in.in3
val res = Wire(new FPResult)
res.data := Cat(SInt(-1, 32), fma.io.out)
res.data := Cat(UInt((BigInt(1) << (fLen - (expWidth + sigWidth))) - 1), fma.io.out)
res.exc := fma.io.exceptionFlags
io.out := Pipe(valid, res, latency-1)
}
class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
require(xLen == 64, "RV32 Rocket FP support missing")
class FPU(cfg: FPUConfig)(implicit p: Parameters) extends FPUModule()(p) {
val io = new FPUIO
val ex_reg_valid = Reg(next=io.valid, init=Bool(false))
@ -450,18 +518,20 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
val load_wb_single = RegEnable(!io.dmem_resp_type(0), io.dmem_resp_val)
val load_wb_data = RegEnable(io.dmem_resp_data, io.dmem_resp_val)
val load_wb_tag = RegEnable(io.dmem_resp_tag, io.dmem_resp_val)
val rec_s = hardfloat.recFNFromFN(8, 24, load_wb_data)
val rec_d = hardfloat.recFNFromFN(11, 53, load_wb_data)
val load_wb_data_recoded = Mux(load_wb_single, Cat(SInt(-1, 32), rec_s), rec_d)
val rec_s = hardfloat.recFNFromFN(sExpWidth, sSigWidth, load_wb_data)
val load_wb_data_recoded = fLen match {
case 32 => rec_s
case 64 =>
val rec_d = hardfloat.recFNFromFN(dExpWidth, dSigWidth, load_wb_data)
Mux(load_wb_single, Cat(UInt((BigInt(1) << (fLen - 32)) - 1), rec_s), rec_d)
}
// regfile
val regfile = Mem(32, Bits(width = 65))
val regfile = Mem(32, Bits(width = fLen+1))
when (load_wb) {
regfile(load_wb_tag) := load_wb_data_recoded
if (enableCommitLog) {
printf ("f%d p%d 0x%x\n", load_wb_tag, load_wb_tag + UInt(32),
Mux(load_wb_single, load_wb_data(31,0), load_wb_data))
}
if (enableCommitLog)
printf("f%d p%d 0x%x\n", load_wb_tag, load_wb_tag + 32, Mux(load_wb_single, load_wb_data(31,0), load_wb_data))
}
val ex_ra1::ex_ra2::ex_ra3::Nil = List.fill(3)(Reg(UInt()))
@ -494,14 +564,10 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
}
}
val sfma = Module(new FPUFMAPipe(cfg.sfmaLatency, 8, 24))
val sfma = Module(new FPUFMAPipe(cfg.sfmaLatency, sExpWidth, sSigWidth))
sfma.io.in.valid := req_valid && ex_ctrl.fma && ex_ctrl.single
sfma.io.in.bits := req
val dfma = Module(new FPUFMAPipe(cfg.dfmaLatency, 11, 53))
dfma.io.in.valid := req_valid && ex_ctrl.fma && !ex_ctrl.single
dfma.io.in.bits := req
val fpiu = Module(new FPToInt)
fpiu.io.in.valid := req_valid && (ex_ctrl.toint || ex_ctrl.div || ex_ctrl.sqrt || ex_ctrl.cmd === FCMD_MINMAX)
fpiu.io.in.bits := req
@ -512,7 +578,7 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
io.cp_resp.valid := Bool(true)
}
val ifpu = Module(new IntToFP(3))
val ifpu = Module(new IntToFP(2))
ifpu.io.in.valid := req_valid && ex_ctrl.fromint
ifpu.io.in.bits := req
ifpu.io.in.bits.in1 := Mux(ex_cp_valid, io.cp_req.bits.in1, io.fromint_data)
@ -524,9 +590,9 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
val divSqrt_wen = Reg(next=Bool(false))
val divSqrt_inReady = Wire(init=Bool(false))
val divSqrt_waddr = Reg(Bits())
val divSqrt_wdata = Wire(Bits())
val divSqrt_flags = Wire(Bits())
val divSqrt_waddr = Reg(UInt(width = 5))
val divSqrt_wdata = Wire(UInt(width = fLen+1))
val divSqrt_flags = Wire(UInt(width = 5))
val divSqrt_in_flight = Reg(init=Bool(false))
val divSqrt_killed = Reg(Bool())
@ -535,8 +601,13 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
val pipes = List(
Pipe(fpmu, fpmu.latency, (c: FPUCtrlSigs) => c.fastpipe, fpmu.io.out.bits),
Pipe(ifpu, ifpu.latency, (c: FPUCtrlSigs) => c.fromint, ifpu.io.out.bits),
Pipe(sfma, sfma.latency, (c: FPUCtrlSigs) => c.fma && c.single, sfma.io.out.bits),
Pipe(dfma, dfma.latency, (c: FPUCtrlSigs) => c.fma && !c.single, dfma.io.out.bits))
Pipe(sfma, sfma.latency, (c: FPUCtrlSigs) => c.fma && c.single, sfma.io.out.bits)) ++
(fLen > 32).option({
val dfma = Module(new FPUFMAPipe(cfg.dfmaLatency, dExpWidth, dSigWidth))
dfma.io.in.valid := req_valid && ex_ctrl.fma && !ex_ctrl.single
dfma.io.in.bits := req
Pipe(dfma, dfma.latency, (c: FPUCtrlSigs) => c.fma && !c.single, dfma.io.out.bits)
})
def latencyMask(c: FPUCtrlSigs, offset: Int) = {
require(pipes.forall(_.lat >= offset))
pipes.map(p => Mux(p.cond(c), UInt(1 << p.lat-offset), UInt(0))).reduce(_|_)
@ -582,10 +653,14 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
when ((!wbInfo(0).cp && wen(0)) || divSqrt_wen) {
regfile(waddr) := wdata
if (enableCommitLog) {
val wdata_unrec_s = hardfloat.fNFromRecFN(8, 24, wdata(64,0))
val wdata_unrec_d = hardfloat.fNFromRecFN(11, 53, wdata(64,0))
printf ("f%d p%d 0x%x\n", waddr, waddr+ UInt(32),
Mux(wbInfo(0).single, Cat(UInt(0,32), wdata_unrec_s), wdata_unrec_d))
val wdata_unrec_s = hardfloat.fNFromRecFN(sExpWidth, sSigWidth, wdata)
val unrec = fLen match {
case 32 => wdata_unrec_s
case 64 =>
val wdata_unrec_d = hardfloat.fNFromRecFN(dExpWidth, dSigWidth, wdata)
Mux(wbInfo(0).single, wdata_unrec_s, wdata_unrec_d)
}
printf("f%d p%d 0x%x\n", waddr, waddr + 32, unrec)
}
}
when (wbInfo(0).cp && wen(0)) {
@ -602,7 +677,7 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
Mux(divSqrt_wen, divSqrt_flags, UInt(0)) |
Mux(wen(0), wexc, UInt(0))
val units_busy = mem_reg_valid && (mem_ctrl.div || mem_ctrl.sqrt) && (!divSqrt_inReady || wen.orR) // || mem_reg_valid && mem_ctrl.fma && Reg(next=Mux(ex_ctrl.single, io.sfma.valid, io.dfma.valid))
val units_busy = mem_reg_valid && (mem_ctrl.div || mem_ctrl.sqrt) && (!divSqrt_inReady || wen.orR)
io.fcsr_rdy := !(ex_reg_valid && ex_ctrl.wflags || mem_reg_valid && mem_ctrl.wflags || wb_reg_valid && wb_ctrl.toint || wen.orR || divSqrt_in_flight)
io.nack_mem := units_busy || write_port_busy || divSqrt_in_flight
io.dec <> fp_decoder.io.sigs
@ -616,6 +691,7 @@ class FPU(cfg: FPUConfig)(implicit p: Parameters) extends CoreModule()(p) {
divSqrt_wdata := 0
divSqrt_flags := 0
if (cfg.divSqrt) {
require(fLen == 64)
val divSqrt_single = Reg(Bool())
val divSqrt_rm = Reg(Bits())
val divSqrt_flags_double = Reg(Bits())

76
src/main/scala/rocket/idecode.scala
View File

@ -215,73 +215,83 @@ class A64Decode(implicit val p: Parameters) extends DecodeConstants
class FDecode(implicit val p: Parameters) extends DecodeConstants
{
val table: Array[(BitPat, List[BitPat])] = Array(
FCVT_S_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N),
FSGNJ_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJ_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJX_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJX_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJN_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJN_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMIN_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMIN_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMAX_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMAX_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FADD_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FADD_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSUB_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSUB_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMUL_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMUL_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMADD_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMADD_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMSUB_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMSUB_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMADD_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMADD_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMSUB_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMSUB_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FCLASS_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCLASS_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FMV_X_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_W_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_W_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_WU_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_WU_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FEQ_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FEQ_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLT_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLT_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLE_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLE_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FMV_S_X-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_W-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_W-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_WU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_WU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FLW-> List(Y,Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_W, N,N,N,Y,N,N,CSR.N,N,N,N),
FLD-> List(Y,Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,Y,N,N,CSR.N,N,N,N),
FSW-> List(Y,Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_W, N,Y,N,N,N,N,CSR.N,N,N,N),
FSD-> List(Y,Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_D, N,Y,N,N,N,N,CSR.N,N,N,N))
FDIV_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSQRT_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N))
}
class DDecode(implicit val p: Parameters) extends DecodeConstants
{
val table: Array[(BitPat, List[BitPat])] = Array(
FCVT_S_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,Y,N,N,CSR.N,N,N,N),
FSGNJ_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJX_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSGNJN_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMIN_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMAX_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FADD_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSUB_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMUL_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FMADD_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FMSUB_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMADD_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FNMSUB_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,Y,Y,N,N,CSR.N,N,N,N),
FCLASS_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_W_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_WU_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FEQ_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLT_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FLE_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,N,N,Y,CSR.N,N,N,N),
FCVT_D_W-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_WU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FLD-> List(Y,Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_I, DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,Y,N,N,CSR.N,N,N,N),
FSD-> List(Y,Y,N,N,N,N,N,Y,A2_IMM, A1_RS1, IMM_S, DW_XPR,FN_ADD, Y,M_XWR, MT_D, N,Y,N,N,N,N,CSR.N,N,N,N),
FDIV_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSQRT_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N))
}
class F64Decode(implicit val p: Parameters) extends DecodeConstants
{
val table: Array[(BitPat, List[BitPat])] = Array(
FMV_X_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_L_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_L_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_LU_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_S_L-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_LU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N))
}
class D64Decode(implicit val p: Parameters) extends DecodeConstants
{
val table: Array[(BitPat, List[BitPat])] = Array(
FMV_X_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_L_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FCVT_LU_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,N,N,N,N,Y,CSR.N,N,N,N),
FMV_D_X-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_L-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_L-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_S_LU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FCVT_D_LU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N),
FDIV_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FDIV_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSQRT_S-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N),
FSQRT_D-> List(Y,Y,N,N,N,N,N,N,A2_X, A1_X, IMM_X, DW_X, FN_X, N,M_X, MT_X, Y,Y,N,Y,N,N,CSR.N,N,N,N))
FCVT_D_LU-> List(Y,Y,N,N,N,N,N,Y,A2_X, A1_RS1, IMM_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,Y,N,N,CSR.N,N,N,N))
}
class RoCCDecode(implicit val p: Parameters) extends DecodeConstants

2
src/main/scala/rocket/rocket.scala
View File

@ -35,6 +35,7 @@ case object DataScratchpadSize extends Field[Int]
trait HasCoreParameters extends HasAddrMapParameters {
implicit val p: Parameters
val xLen = p(XLen)
val fLen = xLen // TODO relax this
val usingVM = p(UseVM)
val usingUser = p(UseUser) || usingVM
@ -151,6 +152,7 @@ class Rocket(implicit p: Parameters) extends CoreModule()(p) {
(if (usingMulDiv) new MDecode +: (xLen > 32).option(new M64Decode).toSeq else Nil) ++:
(if (usingAtomics) new ADecode +: (xLen > 32).option(new A64Decode).toSeq else Nil) ++:
(if (usingFPU) new FDecode +: (xLen > 32).option(new F64Decode).toSeq else Nil) ++:
(if (usingFPU && xLen > 32) Seq(new DDecode, new D64Decode) else Nil) ++:
(usingRoCC.option(new RoCCDecode)) ++:
((xLen > 32).option(new I64Decode)) ++:
(usingVM.option(new SDecode)) ++:

10
src/main/scala/rocket/util.scala
View File

@ -30,10 +30,18 @@ object Util {
def toInt: Int = if (x) 1 else 0
// this one's snagged from scalaz
def option[T](z: T): Option[T] = if (x) Some(z) else None
def option[T](z: => T): Option[T] = if (x) Some(z) else None
}
}
object MuxT {
def apply[T <: Data, U <: Data](cond: Bool, con: (T, U), alt: (T, U)): (T, U) =
(Mux(cond, con._1, alt._1), Mux(cond, con._2, alt._2))
def apply[T <: Data, U <: Data, W <: Data](cond: Bool, con: (T, U, W), alt: (T, U, W)): (T, U, W) =
(Mux(cond, con._1, alt._1), Mux(cond, con._2, alt._2), Mux(cond, con._3, alt._3))
}
import Util._
object Str

23
src/main/scala/rocketchip/Configs.scala
View File

@ -35,7 +35,7 @@ class BasePlatformConfig extends Config (
new AddrMap(entries)
}
lazy val externalAddrMap = new AddrMap(
site(ExtIOAddrMapEntries),
site(ExtraDevices).addrMapEntries ++ site(ExtMMIOPorts),
start = BigInt("50000000", 16),
collapse = true)
lazy val globalAddrMap = {
@ -73,10 +73,17 @@ class BasePlatformConfig extends Config (
res append s" size 0x${addrMap("mem").size.toString(16)};\n"
res append " };\n"
res append "};\n"
res append "core {\n"
}
res append "core {\n"
for (i <- 0 until site(NTiles)) { // TODO heterogeneous tiles
val isa = s"rv${site(XLen)}i${site(MulDivKey).map(x=>"m").mkString}${if (site(UseAtomics)) "a" else ""}${if (site(FPUKey).nonEmpty) "fd" else ""}"
val isa = {
val m = if (site(MulDivKey).nonEmpty) "m" else ""
val a = if (site(UseAtomics)) "a" else ""
val f = if (site(FPUKey).nonEmpty) "f" else ""
val d = if (site(FPUKey).nonEmpty && site(XLen) > 32) "d" else ""
val s = if (site(UseVM)) "s" else ""
s"rv${site(XLen)}i$m$a$f$d$s"
}
res append s" $i {\n"
res append " 0 {\n"
res append s" isa $isa;\n"
@ -95,7 +102,7 @@ class BasePlatformConfig extends Config (
res append s" claim 0x${(plicAddr + plicInfo.claimAddr(i, 'S')).toString(16)};\n"
res append s" };\n"
}
res append s" };\n"
res append " };\n"
res append " };\n"
res append " };\n"
}
@ -131,12 +138,10 @@ class BasePlatformConfig extends Config (
case ExtraDevices => new EmptyDeviceBlock
case ExtraTopPorts => (p: Parameters) => new Bundle
case ExtMMIOPorts => Nil
case ExtIOAddrMapEntries =>
site(ExtraDevices).addrMapEntries ++ site(ExtMMIOPorts)
case NExtMMIOAXIChannels => 0
case NExtMMIOAHBChannels => 0
case NExtMMIOTLChannels => 0
case ExportMMIOPort => site(ExtIOAddrMapEntries).size > 0
case ExportMMIOPort => !externalAddrMap.isEmpty
case AsyncBusChannels => false
case NExtBusAXIChannels => 0
case NExternalClients => (if (site(NExtBusAXIChannels) > 0) 1 else 0) +
@ -214,7 +219,7 @@ class WithScratchpads extends Config(new WithNMemoryChannels(0) ++ new WithDataS
class DefaultFPGASmallConfig extends Config(new WithSmallCores ++ new DefaultFPGAConfig)
class DefaultSmallConfig extends Config(new WithSmallCores ++ new BaseConfig)
class DefaultRV32Config extends Config(new WithRV32 ++ new DefaultSmallConfig)
class DefaultRV32Config extends Config(new WithRV32 ++ new DefaultConfig)
class DualBankConfig extends Config(
new WithNBanksPerMemChannel(2) ++ new BaseConfig)
@ -262,7 +267,7 @@ class DualCoreConfig extends Config(
class TinyConfig extends Config(
new WithScratchpads ++
new WithRV32 ++ new WithSmallCores ++
new WithSmallCores ++ new WithRV32 ++
new WithStatelessBridge ++ new BaseConfig)
class WithTestRAM extends Config(

1
src/main/scala/rocketchip/RocketChip.scala
View File

@ -41,7 +41,6 @@ case object AsyncMemChannels extends Field[Boolean]
case object AsyncMMIOChannels extends Field[Boolean]
/** External address map settings */
case object ExtMMIOPorts extends Field[Seq[AddrMapEntry]]
case object ExtIOAddrMapEntries extends Field[Seq[AddrMapEntry]]
/** Function for building Coreplex */
case object BuildCoreplex extends Field[Parameters => Coreplex]
/** Function for connecting coreplex extra ports to top-level extra ports */

4
src/main/scala/uncore/devices/Plic.scala
View File

@ -51,7 +51,7 @@ case class PLICConfig(nHartsIn: Int, supervisor: Boolean, nDevices: Int, nPriori
def claimOffset = 4
def priorityBytes = 4
require(nDevices > 0 && nDevices <= maxDevices)
require(nDevices <= maxDevices)
require(nHarts > 0 && nHarts <= maxHarts)
require(nPriorities >= 0 && nPriorities <= nDevices)
}
@ -117,7 +117,7 @@ class PLIC(val cfg: PLICConfig)(implicit val p: Parameters) extends Module
val rdata = Wire(init = UInt(0, tlDataBits))
val masked_wdata = (acq.bits.data & acq.bits.full_wmask()) | (rdata & ~acq.bits.full_wmask())
when (addr >= cfg.hartBase) {
if (cfg.nDevices > 0) when (addr >= cfg.hartBase) {
val word =
if (tlDataBytes > cfg.claimOffset) UInt(0)
else addr(log2Up(cfg.claimOffset),log2Up(tlDataBytes))

3
vsim/Makefile
View File

@ -11,7 +11,8 @@ default: all
base_dir = $(abspath ..)
generated_dir = $(abspath ./generated-src)
mem_gen = $(base_dir)/vsim/vlsi_mem_gen
VLSI_MEM_GEN ?= $(base_dir)/vsim/vlsi_mem_gen
mem_gen = $(VLSI_MEM_GEN)
sim_dir = .
output_dir = $(sim_dir)/output

1
vsim/Makefrag
View File

@ -10,6 +10,7 @@ bb_vsrcs = $(base_dir)/vsrc/DebugTransportModuleJtag.v \
sim_vsrcs = \
$(generated_dir)/$(MODEL).$(CONFIG).v \
$(generated_dir)/$(MODEL).$(CONFIG).behav_srams.v \
$(generated_dir)/consts.$(CONFIG).vh \
$(base_dir)/vsrc/$(TB).v \
$(base_dir)/vsrc/SimDTM.v \

10
vsim/Makefrag-verilog
View File

@ -9,9 +9,15 @@ $(generated_dir)/%.$(CONFIG).fir $(generated_dir)/%.$(CONFIG).d $(generated_dir)
mkdir -p $(dir $@)
cd $(base_dir) && $(SBT) "run $(generated_dir) $(PROJECT) $(notdir $*) $(CFG_PROJECT) $(CONFIG)"
$(generated_dir)/%.v: $(generated_dir)/%.fir $(FIRRTL_JAR)
$(generated_dir)/%.v $(generated_dir)/%.conf : $(generated_dir)/%.fir $(FIRRTL_JAR)
mkdir -p $(dir $@)
$(FIRRTL) -i $< -o $@ -X verilog
$(FIRRTL) -i $< -o $@ -X verilog --replSeqMem -c:$(MODEL):-o:$(generated_dir)/$(MODEL).$(CONFIG).conf
$(generated_dir)/$(MODEL).$(CONFIG).behav_srams.v : $(generated_dir)/$(MODEL).$(CONFIG).conf $(mem_gen)
cd $(generated_dir) && \
rm -f $@ && \
$(mem_gen) $(generated_dir)/$(MODEL).$(CONFIG).conf >> $@.tmp && \
mv $@.tmp $@
$(generated_dir)/consts.$(CONFIG).vh: $(generated_dir)/$(MODEL).$(CONFIG).prm
echo "\`ifndef CONST_VH" > $@

127
vsim/vlsi_mem_gen
View File

@ -12,7 +12,7 @@ def parse_line(line):
width = 0
depth = 0
ports = ''
mask_gran = 1
mask_gran = 0
tokens = line.split()
i = 0
for i in range(0,len(tokens),2):
@ -21,20 +21,20 @@ def parse_line(line):
name = tokens[i+1]
elif s == 'width':
width = int(tokens[i+1])
mask_gran = width # default setting
elif s == 'depth':
depth = int(tokens[i+1])
elif s == 'ports':
ports = tokens[i+1].split(',')
elif s == 'mask_gran':
# currently used only for fpga, but here for .conf format compatability
mask_gran = int(tokens[i+1])
else:
sys.exit('%s: unknown argument %s' % (sys.argv[0], a))
return (name, width, depth, ports)
return (name, width, depth, mask_gran, width/mask_gran, ports)
def gen_mem(name, width, depth, ports):
def gen_mem(name, width, depth, mask_gran, mask_seg, ports):
addr_width = max(math.ceil(math.log(depth)/math.log(2)),1)
port_spec = ['input CLK', 'input RST', 'input init']
port_spec = []
readports = []
writeports = []
latchports = []
@ -50,28 +50,34 @@ def gen_mem(name, width, depth, ports):
maskedports[pid] = pid
if ptype == 'read':
port_spec.append('input [%d:0] R%dA' % (addr_width-1, pid))
port_spec.append('input R%dE' % pid)
port_spec.append('output [%d:0] R%dO' % (width-1, pid))
prefix = 'R%d_' % len(readports)
port_spec.append('input %sclk' % prefix)
port_spec.append('input [%d:0] %saddr' % (addr_width-1, prefix))
port_spec.append('input %sen' % prefix)
port_spec.append('output [%d:0] %sdata' % (width-1, prefix))
readports.append(pid)
elif ptype == 'write':
port_spec.append('input [%d:0] W%dA' % (addr_width-1, pid))
port_spec.append('input W%dE' % pid)
port_spec.append('input [%d:0] W%dI' % (width-1, pid))
prefix = 'W%d_' % len(writeports)
port_spec.append('input %sclk' % prefix)
port_spec.append('input [%d:0] %saddr' % (addr_width-1, prefix))
port_spec.append('input %sen' % prefix)
port_spec.append('input [%d:0] %sdata' % (width-1, prefix))
if pid in maskedports:
port_spec.append('input [%d:0] W%dM' % (width-1, pid))
port_spec.append('input [%d:0] %smask' % (mask_seg-1, prefix))
if not use_latches or pid in maskedports:
writeports.append(pid)
else:
latchports.append(pid)
elif ptype == 'rw':
port_spec.append('input [%d:0] RW%dA' % (addr_width-1, pid))
port_spec.append('input RW%dE' % pid)
port_spec.append('input RW%dW' % pid)
prefix = 'RW%d_' % len(rwports)
port_spec.append('input %sclk' % prefix)
port_spec.append('input [%d:0] %saddr' % (addr_width-1, prefix))
port_spec.append('input %sen' % prefix)
port_spec.append('input %swmode' % prefix)
if pid in maskedports:
port_spec.append('input [%d:0] RW%dM' % (width-1, pid))
port_spec.append('input [%d:0] RW%dI' % (width-1, pid))
port_spec.append('output [%d:0] RW%dO' % (width-1, pid))
port_spec.append('input [%d:0] %swmask' % (mask_seg-1, prefix))
port_spec.append('input [%d:0] %swdata' % (width-1, prefix))
port_spec.append('output [%d:0] %srdata' % (width-1, prefix))
rwports.append(pid)
else:
sys.exit('%s: unknown port type %s' % (sys.argv[0], ptype))
@ -82,66 +88,83 @@ def gen_mem(name, width, depth, ports):
masked = len(maskedports)>0
tup = (depth, width, nr, nw, nrw, masked)
for pid in readports:
decl.append('reg [%d:0] reg_R%dA;' % (addr_width-1, pid))
sequential.append('if (R%dE) reg_R%dA <= R%dA;' % (pid, pid, pid))
combinational.append('assign R%dO = ram[reg_R%dA];' % (pid, pid))
for idx in range(nr):
prefix = 'R%d_' % idx
decl.append('reg [%d:0] reg_%saddr;' % (addr_width-1, prefix))
sequential.append('always @(posedge %sclk)' % prefix)
sequential.append(' if (%sen) reg_%saddr <= %saddr;' % (prefix, prefix, prefix))
combinational.append('assign %sdata = ram[reg_%saddr];' % (prefix, prefix))
for pid in rwports:
decl.append('reg [%d:0] reg_RW%dA;' % (addr_width-1, pid))
sequential.append('if (RW%dE && !RW%dW) reg_RW%dA <= RW%dA;' % (pid, pid, pid, pid))
combinational.append('assign RW%dO = ram[reg_RW%dA];' % (pid, pid))
for idx in range(nrw):
prefix = 'RW%d_' % idx
decl.append('reg [%d:0] reg_%saddr;' % (addr_width-1, prefix))
sequential.append('always @(posedge %sclk)' % prefix)
sequential.append(' if (%sen && !%swmode) reg_%saddr <= %saddr;' % (prefix, prefix, prefix, prefix))
combinational.append('assign %srdata = ram[reg_%saddr];' % (prefix, prefix))
for pid in latchports:
decl.append('reg [%d:0] latch_W%dA;' % (addr_width-1, pid))
decl.append('reg [%d:0] latch_W%dI;' % (width-1, pid))
decl.append('reg latch_W%dE;' % (pid))
for idx in range(len(latchports)):
prefix = 'W%d_' % idx
decl.append('reg [%d:0] latch_%saddr;' % (addr_width-1, prefix))
decl.append('reg [%d:0] latch_%sdata;' % (width-1, prefix))
decl.append('reg latch_%sen;' % (prefix))
combinational.append('always @(*) begin')
combinational.append(' if (!CLK && W%dE) latch_W%dA <= W%dA;' % (pid, pid, pid))
combinational.append(' if (!CLK && W%dE) latch_W%dI <= W%dI;' % (pid, pid, pid))
combinational.append(' if (!CLK) latch_W%dE <= W%dE;' % (pid, pid))
combinational.append(' if (!%sclk && %sen) latch_%saddr <= %saddr;' % (prefix, prefix, prefix, prefix))
combinational.append(' if (!%sclk && %sen) latch_%sdata <= %sdata;' % (prefix, prefix, prefix, prefix))
combinational.append(' if (!%sclk) latch_%sen <= %sen;' % (prefix, prefix, prefix))
combinational.append('end')
combinational.append('always @(*)')
combinational.append(' if (CLK && latch_W%dE)' % (pid))
combinational.append(' ram[latch_W%dA] <= latch_W%dI;' % (pid, pid))
combinational.append(' if (%sclk && latch_%sen)' % (prefix, prefix))
combinational.append(' ram[latch_%saddr] <= latch_%sdata;' % (prefix, prefix))
decl.append('reg [%d:0] ram [%d:0];' % (width-1, depth-1))
decl.append('`ifndef SYNTHESIS')
decl.append('`ifdef RANDOMIZE')
decl.append(' integer initvar;')
decl.append(' initial begin')
decl.append(' #0.002;')
decl.append(' #0.002 begin end')
decl.append(' for (initvar = 0; initvar < %d; initvar = initvar+1)' % depth)
decl.append(' ram[initvar] = {%d {$random}};' % ((width-1)/32+1))
for pid in readports:
decl.append(' reg_R%dA = {%d {$random}};' % (pid, ((addr_width-1)/32+1)))
for pid in rwports:
decl.append(' reg_RW%dA = {%d {$random}};' % (pid, ((addr_width-1)/32+1)))
for idx in range(nr):
prefix = 'R%d_' % idx
decl.append(' reg_%saddr = {%d {$random}};' % (prefix, ((addr_width-1)/32+1)))
for idx in range(nrw):
prefix = 'RW%d_' % idx
decl.append(' reg_%saddr = {%d {$random}};' % (prefix, ((addr_width-1)/32+1)))
decl.append(' end')
decl.append('`endif')
decl.append("integer i;")
sequential.append("for (i = 0; i < %d; i=i+1) begin" % width)
for pid in writeports:
mask = (' && W%dM[i]' % pid) if pid in maskedports else ''
sequential.append(" if (W%dE%s) ram[W%dA][i] <= W%dI[i];" % (pid, mask, pid, pid))
for pid in rwports:
mask = (' && RW%dM[i]' % pid) if pid in maskedports else ''
sequential.append(" if (RW%dE && RW%dW%s) ram[RW%dA][i] <= RW%dI[i];" % (pid, pid, mask, pid, pid))
for idx in range(nw):
prefix = 'W%d_' % idx
pid = writeports[idx]
sequential.append('always @(posedge %sclk)' % prefix)
sequential.append(" if (%sen) begin" % prefix)
for i in range(mask_seg):
mask = ('if (%smask[%d]) ' % (prefix, i)) if pid in maskedports else ''
ram_range = '%d:%d' % ((i+1)*mask_gran-1, i*mask_gran)
sequential.append(" %sram[%saddr][%s] <= %sdata[%s];" % (mask, prefix, ram_range, prefix, ram_range))
sequential.append(" end")
for idx in range(nrw):
pid = rwports[idx]
prefix = 'RW%d_' % idx
sequential.append('always @(posedge %sclk)' % prefix)
sequential.append(" if (%sen && %swmode) begin" % (prefix, prefix))
for i in range(mask_seg):
mask = ('if (%swmask[%d]) ' % (prefix, i)) if pid in maskedports else ''
ram_range = '%d:%d' % ((i+1)*mask_gran-1, i*mask_gran)
sequential.append(" %sram[%saddr][%s] <= %swdata[%s];" % (mask, prefix, ram_range, prefix, ram_range))
sequential.append(" end")
body = "\
%s\n\
always @(posedge CLK) begin\n\
%s\n\
end\n\
%s\n" % ('\n '.join(decl), '\n '.join(sequential), '\n '.join(combinational))
s = "module %s(\n\
s = "\nmodule %s(\n\
%s\n\
);\n\
\n\
%s\
\n\
endmodule\n" % (name, ',\n '.join(port_spec), body)
endmodule" % (name, ',\n '.join(port_spec), body)
return s
def main():