Fix MPP to only retain legal values
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@ -713,11 +713,20 @@ class CsrPlugin(val config: CsrPluginConfig) extends Plugin[VexRiscv] with Excep
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misaAccess(CSR.MISA, xlen-2 -> misa.base , 0 -> misa.extensions)
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//Machine CSR
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READ_WRITE(CSR.MSTATUS,11 -> mstatus.MPP, 7 -> mstatus.MPIE, 3 -> mstatus.MIE)
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READ_WRITE(CSR.MSTATUS, 7 -> mstatus.MPIE, 3 -> mstatus.MIE)
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READ_ONLY(CSR.MIP, 11 -> mip.MEIP, 7 -> mip.MTIP)
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READ_WRITE(CSR.MIP, 3 -> mip.MSIP)
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READ_WRITE(CSR.MIE, 11 -> mie.MEIE, 7 -> mie.MTIE, 3 -> mie.MSIE)
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r(CSR.MSTATUS, 11 -> mstatus.MPP)
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onWrite(CSR.MSTATUS){
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switch(writeData()(12 downto 11)){
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is(3){ mstatus.MPP := 3 }
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if(supervisorGen) is(1){ mstatus.MPP := 1 }
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if(userGen) is(0){ mstatus.MPP := 0 }
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}
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}
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mtvecAccess(CSR.MTVEC, 2 -> mtvec.base, 0 -> mtvec.mode)
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mepcAccess(CSR.MEPC, mepc)
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if(mscratchGen) READ_WRITE(CSR.MSCRATCH, mscratch)
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