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SUM and SPP are write only zeros if SATP and S are not supported

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This commit is contained in:
David Harris 2025-04-11 16:21:05 -07:00
parent 080011dab6
commit 0528337a4a
1 changed files with 3 additions and 3 deletions
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6
src/privileged/csrsr.sv
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@ -164,7 +164,7 @@ module csrsr import cvw::*; #(parameter cvw_t P) (
STATUS_MPIE <= STATUS_MIE;
STATUS_MIE <= 1'b0;
STATUS_MPP <= PrivilegeModeW;
end else begin // supervisor mode
end else if (P.S_SUPPORTED) begin // supervisor mode
STATUS_SPIE <= STATUS_SIE;
STATUS_SIE <= 1'b0;
STATUS_SPP <= PrivilegeModeW[0];
@ -184,7 +184,7 @@ module csrsr import cvw::*; #(parameter cvw_t P) (
STATUS_TW_INT <= CSRWriteValM[21];
STATUS_TVM_INT <= CSRWriteValM[20];
STATUS_MXR_INT <= CSRWriteValM[19];
STATUS_SUM_INT <= CSRWriteValM[18];
STATUS_SUM_INT <= P.VIRTMEM_SUPPORTED & CSRWriteValM[18];
STATUS_MPRV_INT <= CSRWriteValM[17];
STATUS_FS_INT <= CSRWriteValM[14:13];
STATUS_MPP <= STATUS_MPP_NEXT;
@ -204,7 +204,7 @@ module csrsr import cvw::*; #(parameter cvw_t P) (
// coverage on
end else if (WriteSSTATUSM) begin // write a subset of the STATUS bits
STATUS_MXR_INT <= CSRWriteValM[19];
STATUS_SUM_INT <= CSRWriteValM[18];
STATUS_SUM_INT <= P.VIRTMEM_SUPPORTED & CSRWriteValM[18];
STATUS_FS_INT <= CSRWriteValM[14:13];
STATUS_SPP <= P.S_SUPPORTED & CSRWriteValM[8];
STATUS_SPIE <= P.S_SUPPORTED & CSRWriteValM[5];