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VexRiscv
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fpu now lift wfi

This commit is contained in:
Dolu1990 2021-03-24 16:21:37 +01:00
parent 925edd160e
commit 21c91c6b70
1 changed files with 4 additions and 0 deletions
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4
src/main/scala/vexriscv/plugin/FpuPlugin.scala
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@ -306,6 +306,10 @@ class FpuPlugin(externalFpu : Boolean = false,
insert(FPU_COMMIT_SYNC) := List(FpuOpcode.LOAD, FpuOpcode.FMV_W_X, FpuOpcode.I2F).map(_ === input(FPU_OPCODE)).orR insert(FPU_COMMIT_SYNC) := List(FpuOpcode.LOAD, FpuOpcode.FMV_W_X, FpuOpcode.I2F).map(_ === input(FPU_OPCODE)).orR
insert(FPU_COMMIT_LOAD) := input(FPU_OPCODE) === FpuOpcode.LOAD insert(FPU_COMMIT_LOAD) := input(FPU_OPCODE) === FpuOpcode.LOAD
if(serviceExist(classOf[IWake])) when(forked){
service(classOf[IWake]).askWake() //Ensure that no WFI followed by a FPU stall the FPU interface for other CPU
}
} }
writeBack plug new Area{ //WARNING IF STAGE CHANGE, update the regression rsp capture filter for the golden model (top->VexRiscv->lastStageIsFiring) writeBack plug new Area{ //WARNING IF STAGE CHANGE, update the regression rsp capture filter for the golden model (top->VexRiscv->lastStageIsFiring)