riscv/rocket-chip
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expose FMA ports outside of FPU (for the VU)

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This commit is contained in:
Andrew Waterman
2012-02-23 17:39:34 -08:00
parent 6ceaa0e80a
commit 5332bab6f1
2 changed files with 67 additions and 67 deletions
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20
rocket/src/main/scala/cpu.scala
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@ -97,18 +97,16 @@ class rocketProc(resetSignal: Bool = null) extends Component(resetSignal)
dpath.io.dmem.resp_data := arb.io.cpu.resp_data;
dpath.io.dmem.resp_data_subword := io.dmem.resp_data_subword;
var fpu: rocketFPU = null
if (HAVE_FPU)
{
val fpu = new rocketFPU(4,6)
fpu = new rocketFPU(4,6)
dpath.io.fpu <> fpu.io.dpath
ctrl.io.fpu <> fpu.io.ctrl
}
else
ctrl.io.fpu.dec.valid := Bool(false)
ctrl.io.ext_mem.req_val := Bool(false)
dpath.io.ext_mem.req_val := Bool(false)
if (HAVE_VEC)
{
dpath.io.vec_ctrl <> ctrl.io.vec_dpath
@ -161,5 +159,19 @@ class rocketProc(resetSignal: Bool = null) extends Component(resetSignal)
vu.io.dmem_resp.bits.data := dpath.io.ext_mem.resp_data
vu.io.dmem_resp.bits.tag := dpath.io.ext_mem.resp_tag
vu.io.dmem_resp.bits.typ := dpath.io.ext_mem.resp_type
fpu.io.sfma.valid := Bool(false)
fpu.io.dfma.valid := Bool(false)
}
else
{
ctrl.io.ext_mem.req_val := Bool(false)
dpath.io.ext_mem.req_val := Bool(false)
if (HAVE_FPU)
{
fpu.io.sfma.valid := Bool(false)
fpu.io.dfma.valid := Bool(false)
}
}
}